./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --validate ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 7724a2de Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReachWitnessValidation.xml -i ../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --traceabstraction.compute.hoare.annotation.of.negated.interpolant.automaton,.abstraction.and.cfg false --witnessparser.only.consider.loop.invariants false --cacsl2boogietranslator.check.unreachability.of.reach_error.function false --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.fs.goblint-validation-7724a2d-m [2024-06-28 03:39:19,892 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:39:19,970 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:39:19,975 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:39:19,976 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:39:20,005 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:39:20,007 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:39:20,007 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:39:20,008 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:39:20,012 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:39:20,012 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:39:20,013 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:39:20,013 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:39:20,014 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:39:20,015 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:39:20,015 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:39:20,015 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:39:20,016 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:39:20,016 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:39:20,016 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:39:20,017 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:39:20,017 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:39:20,017 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:39:20,018 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:39:20,018 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:39:20,018 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:39:20,018 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:39:20,019 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:39:20,019 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:39:20,020 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:39:20,021 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:39:20,021 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:39:20,021 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:39:20,021 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:39:20,022 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:39:20,022 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:39:20,022 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:39:20,022 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:39:20,022 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:39:20,023 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:39:20,023 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:39:20,023 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:39:20,023 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:39:20,024 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:39:20,294 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:39:20,321 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:39:20,324 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:39:20,325 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:39:20,326 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:39:20,327 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-28 03:39:20,489 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:39:20,489 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:39:20,490 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 03:39:21,659 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:39:21,938 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:39:21,939 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 03:39:21,954 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3111dcf07/62819ba1f7514ed785bb2ac65925ea11/FLAG013a5e092 [2024-06-28 03:39:21,967 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3111dcf07/62819ba1f7514ed785bb2ac65925ea11 [2024-06-28 03:39:21,968 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:39:21,969 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:39:21,970 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:39:21,973 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:39:21,977 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:39:21,978 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:39:20" (1/2) ... [2024-06-28 03:39:21,979 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ec40139 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:39:21, skipping insertion in model container [2024-06-28 03:39:21,979 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:39:20" (1/2) ... [2024-06-28 03:39:21,980 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6a15983f and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:39:21, skipping insertion in model container [2024-06-28 03:39:21,980 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:39:21" (2/2) ... [2024-06-28 03:39:21,981 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ec40139 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:21, skipping insertion in model container [2024-06-28 03:39:21,981 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:39:21" (2/2) ... [2024-06-28 03:39:21,981 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:39:22,060 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:39:22,062 INFO L97 edCorrectnessWitness]: Location invariant before [L805-L805] (((((((((((((((! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && (z == 0 || z == 1)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 03:39:22,062 INFO L97 edCorrectnessWitness]: Location invariant before [L806-L806] (((((((((((((((! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 2)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (z == 0 || z == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (((((((((((((((0 <= __unbuffered_cnt && y$flush_delayed == (_Bool)0) && y$r_buff0_thd0 == (_Bool)0) && y$r_buff0_thd1 == (_Bool)0) && y$r_buff1_thd0 == (_Bool)0) && y$r_buff1_thd1 == (_Bool)0) && y$read_delayed == (_Bool)0) && y$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1)) && (x == 0 || x == 1)) && (y$w_buff0 == 0 || y$w_buff0 == 2)) && (y$w_buff1 == 0 || y$w_buff1 == 2)) && (z == 0 || z == 1)) && ((y == 0 || y == 1) || y == 2)) && ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2)))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 2))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || ((y == 0 || y == 1) || y == 2))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || ((y$mem_tmp == 0 || y$mem_tmp == 1) || y$mem_tmp == 2))) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 03:39:22,062 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:39:22,063 INFO L106 edCorrectnessWitness]: ghost_update [L803-L803] multithreaded = 1; [2024-06-28 03:39:22,118 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:39:22,525 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:39:22,537 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:39:22,661 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:39:22,710 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:39:22,711 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:22 WrapperNode [2024-06-28 03:39:22,711 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:39:22,712 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:39:22,712 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:39:22,712 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:39:22,720 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:22" (1/1) ... [2024-06-28 03:39:22,753 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:22" (1/1) ... [2024-06-28 03:39:22,795 INFO L138 Inliner]: procedures = 174, calls = 38, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 139 [2024-06-28 03:39:22,796 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:39:22,796 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:39:22,796 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:39:22,796 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:39:22,809 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:22" (1/1) ... [2024-06-28 03:39:22,810 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:22" (1/1) ... [2024-06-28 03:39:22,827 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:22" (1/1) ... [2024-06-28 03:39:22,848 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-06-28 03:39:22,854 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:22" (1/1) ... [2024-06-28 03:39:22,854 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:22" (1/1) ... [2024-06-28 03:39:22,864 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:22" (1/1) ... [2024-06-28 03:39:22,875 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:22" (1/1) ... [2024-06-28 03:39:22,878 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:22" (1/1) ... [2024-06-28 03:39:22,885 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:22" (1/1) ... [2024-06-28 03:39:22,889 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:39:22,892 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:39:22,892 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:39:22,892 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:39:22,893 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:22" (1/1) ... [2024-06-28 03:39:22,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:39:22,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:39:22,958 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-06-28 03:39:23,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-06-28 03:39:23,068 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:39:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:39:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:39:23,069 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:39:23,070 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:39:23,070 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:39:23,070 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:39:23,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:39:23,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:39:23,071 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:39:23,073 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-28 03:39:23,226 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:39:23,228 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:39:23,542 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:39:23,542 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:39:23,750 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:39:23,751 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:39:23,753 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:39:23 BoogieIcfgContainer [2024-06-28 03:39:23,753 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:39:23,756 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:39:23,757 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:39:23,759 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:39:23,759 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:39:20" (1/4) ... [2024-06-28 03:39:23,761 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ac56d2 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:39:23, skipping insertion in model container [2024-06-28 03:39:23,761 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:39:21" (2/4) ... [2024-06-28 03:39:23,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ac56d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:39:23, skipping insertion in model container [2024-06-28 03:39:23,766 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:39:22" (3/4) ... [2024-06-28 03:39:23,766 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76ac56d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:39:23, skipping insertion in model container [2024-06-28 03:39:23,767 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:39:23" (4/4) ... [2024-06-28 03:39:23,768 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi001_power.opt_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 03:39:23,785 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:39:23,785 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 03:39:23,785 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:39:23,824 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:39:23,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 03:39:23,900 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2024-06-28 03:39:23,900 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:39:23,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 29 events. 0/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 41 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:39:23,902 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 31 transitions, 70 flow [2024-06-28 03:39:23,908 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 52 flow [2024-06-28 03:39:23,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:39:23,925 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@176f1201, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:39:23,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 03:39:23,929 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:39:23,929 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:39:23,929 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:39:23,930 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:23,930 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:39:23,931 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:23,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:23,936 INFO L85 PathProgramCache]: Analyzing trace with hash 330507394, now seen corresponding path program 1 times [2024-06-28 03:39:23,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:23,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797280067] [2024-06-28 03:39:23,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:23,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:24,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:25,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:25,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:25,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797280067] [2024-06-28 03:39:25,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797280067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:25,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:25,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:39:25,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711516529] [2024-06-28 03:39:25,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:25,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:39:25,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:25,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:39:25,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:39:25,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 31 [2024-06-28 03:39:25,341 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 52 flow. Second operand has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:25,341 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:25,341 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 31 [2024-06-28 03:39:25,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:25,483 INFO L124 PetriNetUnfolderBase]: 162/320 cut-off events. [2024-06-28 03:39:25,484 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 03:39:25,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 631 conditions, 320 events. 162/320 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1209 event pairs, 97 based on Foata normal form. 1/310 useless extension candidates. Maximal degree in co-relation 620. Up to 288 conditions per place. [2024-06-28 03:39:25,490 INFO L140 encePairwiseOnDemand]: 26/31 looper letters, 21 selfloop transitions, 3 changer transitions 0/29 dead transitions. [2024-06-28 03:39:25,490 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 29 transitions, 115 flow [2024-06-28 03:39:25,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:39:25,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:39:25,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-06-28 03:39:25,501 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5698924731182796 [2024-06-28 03:39:25,503 INFO L175 Difference]: Start difference. First operand has 30 places, 23 transitions, 52 flow. Second operand 3 states and 53 transitions. [2024-06-28 03:39:25,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 29 transitions, 115 flow [2024-06-28 03:39:25,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 03:39:25,508 INFO L231 Difference]: Finished difference. Result has 31 places, 25 transitions, 71 flow [2024-06-28 03:39:25,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=71, PETRI_PLACES=31, PETRI_TRANSITIONS=25} [2024-06-28 03:39:25,513 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2024-06-28 03:39:25,513 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 25 transitions, 71 flow [2024-06-28 03:39:25,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.333333333333334) internal successors, (31), 3 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:25,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:25,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:25,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:39:25,514 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:25,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:25,515 INFO L85 PathProgramCache]: Analyzing trace with hash -209632469, now seen corresponding path program 1 times [2024-06-28 03:39:25,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:25,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583831987] [2024-06-28 03:39:25,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:25,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:26,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:26,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:26,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583831987] [2024-06-28 03:39:26,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583831987] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:26,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:26,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:39:26,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289684784] [2024-06-28 03:39:26,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:26,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:39:26,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:26,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:39:26,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:39:26,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 03:39:26,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 25 transitions, 71 flow. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:26,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:26,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 03:39:26,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:26,537 INFO L124 PetriNetUnfolderBase]: 186/348 cut-off events. [2024-06-28 03:39:26,537 INFO L125 PetriNetUnfolderBase]: For 66/66 co-relation queries the response was YES. [2024-06-28 03:39:26,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 790 conditions, 348 events. 186/348 cut-off events. For 66/66 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1262 event pairs, 94 based on Foata normal form. 2/344 useless extension candidates. Maximal degree in co-relation 778. Up to 319 conditions per place. [2024-06-28 03:39:26,540 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 26 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2024-06-28 03:39:26,540 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 159 flow [2024-06-28 03:39:26,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:39:26,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:39:26,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-06-28 03:39:26,542 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5241935483870968 [2024-06-28 03:39:26,542 INFO L175 Difference]: Start difference. First operand has 31 places, 25 transitions, 71 flow. Second operand 4 states and 65 transitions. [2024-06-28 03:39:26,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 159 flow [2024-06-28 03:39:26,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 35 transitions, 156 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:39:26,544 INFO L231 Difference]: Finished difference. Result has 34 places, 27 transitions, 95 flow [2024-06-28 03:39:26,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=95, PETRI_PLACES=34, PETRI_TRANSITIONS=27} [2024-06-28 03:39:26,545 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 4 predicate places. [2024-06-28 03:39:26,545 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 27 transitions, 95 flow [2024-06-28 03:39:26,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:26,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:26,546 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:26,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:39:26,546 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:26,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:26,547 INFO L85 PathProgramCache]: Analyzing trace with hash 2091328885, now seen corresponding path program 1 times [2024-06-28 03:39:26,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:26,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392140797] [2024-06-28 03:39:26,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:26,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:26,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:27,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:27,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:27,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392140797] [2024-06-28 03:39:27,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392140797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:27,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:27,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:39:27,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198895391] [2024-06-28 03:39:27,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:27,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:39:27,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:27,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:39:27,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:39:27,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 03:39:27,612 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 27 transitions, 95 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:27,612 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:27,612 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 03:39:27,613 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:27,751 INFO L124 PetriNetUnfolderBase]: 180/340 cut-off events. [2024-06-28 03:39:27,751 INFO L125 PetriNetUnfolderBase]: For 193/193 co-relation queries the response was YES. [2024-06-28 03:39:27,754 INFO L83 FinitePrefix]: Finished finitePrefix Result has 850 conditions, 340 events. 180/340 cut-off events. For 193/193 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1230 event pairs, 52 based on Foata normal form. 4/340 useless extension candidates. Maximal degree in co-relation 836. Up to 291 conditions per place. [2024-06-28 03:39:27,755 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 7 changer transitions 0/42 dead transitions. [2024-06-28 03:39:27,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 42 transitions, 211 flow [2024-06-28 03:39:27,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:39:27,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:39:27,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 80 transitions. [2024-06-28 03:39:27,761 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5161290322580645 [2024-06-28 03:39:27,761 INFO L175 Difference]: Start difference. First operand has 34 places, 27 transitions, 95 flow. Second operand 5 states and 80 transitions. [2024-06-28 03:39:27,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 42 transitions, 211 flow [2024-06-28 03:39:27,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 42 transitions, 202 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 03:39:27,765 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 119 flow [2024-06-28 03:39:27,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2024-06-28 03:39:27,767 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 7 predicate places. [2024-06-28 03:39:27,767 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 119 flow [2024-06-28 03:39:27,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:27,768 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:27,768 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:27,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:39:27,768 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:27,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:27,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1135293634, now seen corresponding path program 1 times [2024-06-28 03:39:27,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:27,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365390529] [2024-06-28 03:39:27,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:27,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:27,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:29,455 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:29,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:29,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365390529] [2024-06-28 03:39:29,456 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365390529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:29,456 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:29,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:39:29,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1877525994] [2024-06-28 03:39:29,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:29,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:39:29,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:29,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:39:29,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:39:29,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 31 [2024-06-28 03:39:29,535 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 119 flow. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:29,535 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:29,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 31 [2024-06-28 03:39:29,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:29,718 INFO L124 PetriNetUnfolderBase]: 176/330 cut-off events. [2024-06-28 03:39:29,718 INFO L125 PetriNetUnfolderBase]: For 311/311 co-relation queries the response was YES. [2024-06-28 03:39:29,719 INFO L83 FinitePrefix]: Finished finitePrefix Result has 900 conditions, 330 events. 176/330 cut-off events. For 311/311 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1159 event pairs, 30 based on Foata normal form. 4/328 useless extension candidates. Maximal degree in co-relation 885. Up to 265 conditions per place. [2024-06-28 03:39:29,721 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-28 03:39:29,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 43 transitions, 225 flow [2024-06-28 03:39:29,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:39:29,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:39:29,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-28 03:39:29,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.478494623655914 [2024-06-28 03:39:29,723 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 119 flow. Second operand 6 states and 89 transitions. [2024-06-28 03:39:29,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 43 transitions, 225 flow [2024-06-28 03:39:29,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 43 transitions, 210 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:29,725 INFO L231 Difference]: Finished difference. Result has 39 places, 28 transitions, 116 flow [2024-06-28 03:39:29,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=116, PETRI_PLACES=39, PETRI_TRANSITIONS=28} [2024-06-28 03:39:29,726 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 9 predicate places. [2024-06-28 03:39:29,726 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 28 transitions, 116 flow [2024-06-28 03:39:29,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:29,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:29,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:29,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:39:29,727 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:29,728 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:29,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1523058016, now seen corresponding path program 1 times [2024-06-28 03:39:29,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:29,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516571103] [2024-06-28 03:39:29,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:29,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:29,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:30,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:30,432 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:30,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516571103] [2024-06-28 03:39:30,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516571103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:30,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:30,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:39:30,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007258210] [2024-06-28 03:39:30,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:30,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:39:30,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:30,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:39:30,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:39:30,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 31 [2024-06-28 03:39:30,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 28 transitions, 116 flow. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:30,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:30,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 31 [2024-06-28 03:39:30,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:30,614 INFO L124 PetriNetUnfolderBase]: 147/294 cut-off events. [2024-06-28 03:39:30,614 INFO L125 PetriNetUnfolderBase]: For 377/377 co-relation queries the response was YES. [2024-06-28 03:39:30,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 821 conditions, 294 events. 147/294 cut-off events. For 377/377 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1061 event pairs, 53 based on Foata normal form. 1/289 useless extension candidates. Maximal degree in co-relation 804. Up to 259 conditions per place. [2024-06-28 03:39:30,618 INFO L140 encePairwiseOnDemand]: 25/31 looper letters, 25 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-28 03:39:30,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 35 transitions, 196 flow [2024-06-28 03:39:30,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:39:30,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:39:30,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 63 transitions. [2024-06-28 03:39:30,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-28 03:39:30,620 INFO L175 Difference]: Start difference. First operand has 39 places, 28 transitions, 116 flow. Second operand 5 states and 63 transitions. [2024-06-28 03:39:30,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 35 transitions, 196 flow [2024-06-28 03:39:30,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 35 transitions, 176 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:30,622 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 123 flow [2024-06-28 03:39:30,623 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=123, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2024-06-28 03:39:30,623 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 10 predicate places. [2024-06-28 03:39:30,624 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 123 flow [2024-06-28 03:39:30,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 6 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:30,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:30,624 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:30,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:39:30,625 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:30,625 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:30,625 INFO L85 PathProgramCache]: Analyzing trace with hash 29843198, now seen corresponding path program 1 times [2024-06-28 03:39:30,625 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:30,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391750563] [2024-06-28 03:39:30,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:30,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:31,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:31,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:31,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1391750563] [2024-06-28 03:39:31,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1391750563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:31,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:31,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:39:31,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705965172] [2024-06-28 03:39:31,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:31,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:39:31,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:31,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:39:31,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:39:31,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:31,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 30 transitions, 123 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:31,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:31,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:31,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:31,447 INFO L124 PetriNetUnfolderBase]: 172/329 cut-off events. [2024-06-28 03:39:31,448 INFO L125 PetriNetUnfolderBase]: For 581/581 co-relation queries the response was YES. [2024-06-28 03:39:31,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 329 events. 172/329 cut-off events. For 581/581 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1181 event pairs, 64 based on Foata normal form. 1/330 useless extension candidates. Maximal degree in co-relation 953. Up to 298 conditions per place. [2024-06-28 03:39:31,450 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 8 changer transitions 0/38 dead transitions. [2024-06-28 03:39:31,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 38 transitions, 215 flow [2024-06-28 03:39:31,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:39:31,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:39:31,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 68 transitions. [2024-06-28 03:39:31,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 03:39:31,452 INFO L175 Difference]: Start difference. First operand has 40 places, 30 transitions, 123 flow. Second operand 6 states and 68 transitions. [2024-06-28 03:39:31,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 38 transitions, 215 flow [2024-06-28 03:39:31,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 38 transitions, 204 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:31,454 INFO L231 Difference]: Finished difference. Result has 43 places, 32 transitions, 145 flow [2024-06-28 03:39:31,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=112, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=145, PETRI_PLACES=43, PETRI_TRANSITIONS=32} [2024-06-28 03:39:31,455 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 13 predicate places. [2024-06-28 03:39:31,455 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 32 transitions, 145 flow [2024-06-28 03:39:31,455 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:31,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:31,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:31,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:39:31,456 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:31,457 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:31,457 INFO L85 PathProgramCache]: Analyzing trace with hash 697773711, now seen corresponding path program 1 times [2024-06-28 03:39:31,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:31,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2009241834] [2024-06-28 03:39:31,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:31,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:31,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:32,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:32,073 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:32,073 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2009241834] [2024-06-28 03:39:32,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2009241834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:32,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:32,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:39:32,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631083397] [2024-06-28 03:39:32,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:32,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:39:32,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:32,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:39:32,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:39:32,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:32,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 32 transitions, 145 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:32,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:32,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:32,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:32,370 INFO L124 PetriNetUnfolderBase]: 188/348 cut-off events. [2024-06-28 03:39:32,370 INFO L125 PetriNetUnfolderBase]: For 952/952 co-relation queries the response was YES. [2024-06-28 03:39:32,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1131 conditions, 348 events. 188/348 cut-off events. For 952/952 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1221 event pairs, 71 based on Foata normal form. 1/349 useless extension candidates. Maximal degree in co-relation 1111. Up to 311 conditions per place. [2024-06-28 03:39:32,373 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 31 selfloop transitions, 8 changer transitions 0/43 dead transitions. [2024-06-28 03:39:32,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 43 transitions, 253 flow [2024-06-28 03:39:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:39:32,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:39:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 71 transitions. [2024-06-28 03:39:32,375 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3817204301075269 [2024-06-28 03:39:32,375 INFO L175 Difference]: Start difference. First operand has 43 places, 32 transitions, 145 flow. Second operand 6 states and 71 transitions. [2024-06-28 03:39:32,375 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 43 transitions, 253 flow [2024-06-28 03:39:32,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 43 transitions, 236 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:32,378 INFO L231 Difference]: Finished difference. Result has 45 places, 34 transitions, 161 flow [2024-06-28 03:39:32,378 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=161, PETRI_PLACES=45, PETRI_TRANSITIONS=34} [2024-06-28 03:39:32,378 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 15 predicate places. [2024-06-28 03:39:32,379 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 34 transitions, 161 flow [2024-06-28 03:39:32,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:32,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:32,379 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:32,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:39:32,379 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:32,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:32,380 INFO L85 PathProgramCache]: Analyzing trace with hash 703487631, now seen corresponding path program 2 times [2024-06-28 03:39:32,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:32,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468674281] [2024-06-28 03:39:32,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:32,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:33,073 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:33,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:33,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468674281] [2024-06-28 03:39:33,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468674281] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:33,074 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:33,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:39:33,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616652452] [2024-06-28 03:39:33,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:33,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:39:33,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:33,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:39:33,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:39:33,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:33,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 34 transitions, 161 flow. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:33,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:33,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:33,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:33,289 INFO L124 PetriNetUnfolderBase]: 186/346 cut-off events. [2024-06-28 03:39:33,290 INFO L125 PetriNetUnfolderBase]: For 1247/1249 co-relation queries the response was YES. [2024-06-28 03:39:33,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1195 conditions, 346 events. 186/346 cut-off events. For 1247/1249 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1223 event pairs, 75 based on Foata normal form. 3/349 useless extension candidates. Maximal degree in co-relation 1174. Up to 302 conditions per place. [2024-06-28 03:39:33,292 INFO L140 encePairwiseOnDemand]: 24/31 looper letters, 27 selfloop transitions, 11 changer transitions 0/42 dead transitions. [2024-06-28 03:39:33,293 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 42 transitions, 263 flow [2024-06-28 03:39:33,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:39:33,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:39:33,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-28 03:39:33,295 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 03:39:33,296 INFO L175 Difference]: Start difference. First operand has 45 places, 34 transitions, 161 flow. Second operand 6 states and 70 transitions. [2024-06-28 03:39:33,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 42 transitions, 263 flow [2024-06-28 03:39:33,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 42 transitions, 246 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:33,299 INFO L231 Difference]: Finished difference. Result has 47 places, 36 transitions, 187 flow [2024-06-28 03:39:33,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=187, PETRI_PLACES=47, PETRI_TRANSITIONS=36} [2024-06-28 03:39:33,305 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 17 predicate places. [2024-06-28 03:39:33,305 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 36 transitions, 187 flow [2024-06-28 03:39:33,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:33,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:33,305 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:33,305 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:39:33,306 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:33,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:33,306 INFO L85 PathProgramCache]: Analyzing trace with hash 703495567, now seen corresponding path program 1 times [2024-06-28 03:39:33,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:33,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496270907] [2024-06-28 03:39:33,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:33,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:33,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:34,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:34,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:34,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496270907] [2024-06-28 03:39:34,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [496270907] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:34,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:34,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:34,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920423518] [2024-06-28 03:39:34,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:34,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:34,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:34,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:34,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:34,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:34,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 36 transitions, 187 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:34,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:34,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:34,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:34,317 INFO L124 PetriNetUnfolderBase]: 171/323 cut-off events. [2024-06-28 03:39:34,317 INFO L125 PetriNetUnfolderBase]: For 1225/1225 co-relation queries the response was YES. [2024-06-28 03:39:34,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1156 conditions, 323 events. 171/323 cut-off events. For 1225/1225 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1142 event pairs, 62 based on Foata normal form. 1/324 useless extension candidates. Maximal degree in co-relation 1134. Up to 294 conditions per place. [2024-06-28 03:39:34,320 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 32 selfloop transitions, 10 changer transitions 0/45 dead transitions. [2024-06-28 03:39:34,320 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 45 transitions, 297 flow [2024-06-28 03:39:34,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:34,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:34,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-06-28 03:39:34,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:39:34,322 INFO L175 Difference]: Start difference. First operand has 47 places, 36 transitions, 187 flow. Second operand 7 states and 77 transitions. [2024-06-28 03:39:34,325 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 45 transitions, 297 flow [2024-06-28 03:39:34,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 45 transitions, 270 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:34,328 INFO L231 Difference]: Finished difference. Result has 50 places, 38 transitions, 199 flow [2024-06-28 03:39:34,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=199, PETRI_PLACES=50, PETRI_TRANSITIONS=38} [2024-06-28 03:39:34,331 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 20 predicate places. [2024-06-28 03:39:34,331 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 38 transitions, 199 flow [2024-06-28 03:39:34,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:34,331 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:34,331 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:34,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:39:34,332 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:34,332 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:34,332 INFO L85 PathProgramCache]: Analyzing trace with hash 10610739, now seen corresponding path program 1 times [2024-06-28 03:39:34,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:34,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852757171] [2024-06-28 03:39:34,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:34,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:34,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:34,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:34,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:34,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852757171] [2024-06-28 03:39:34,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852757171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:34,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:34,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:34,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263062545] [2024-06-28 03:39:34,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:34,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:34,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:34,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:34,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:35,029 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:35,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 38 transitions, 199 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:35,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:35,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:35,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:35,268 INFO L124 PetriNetUnfolderBase]: 188/349 cut-off events. [2024-06-28 03:39:35,269 INFO L125 PetriNetUnfolderBase]: For 1837/1837 co-relation queries the response was YES. [2024-06-28 03:39:35,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1329 conditions, 349 events. 188/349 cut-off events. For 1837/1837 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1226 event pairs, 49 based on Foata normal form. 2/351 useless extension candidates. Maximal degree in co-relation 1306. Up to 291 conditions per place. [2024-06-28 03:39:35,271 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 40 selfloop transitions, 12 changer transitions 0/56 dead transitions. [2024-06-28 03:39:35,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 56 transitions, 355 flow [2024-06-28 03:39:35,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:35,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:35,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-28 03:39:35,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-28 03:39:35,273 INFO L175 Difference]: Start difference. First operand has 50 places, 38 transitions, 199 flow. Second operand 7 states and 85 transitions. [2024-06-28 03:39:35,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 56 transitions, 355 flow [2024-06-28 03:39:35,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 56 transitions, 332 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:35,275 INFO L231 Difference]: Finished difference. Result has 53 places, 42 transitions, 232 flow [2024-06-28 03:39:35,276 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=232, PETRI_PLACES=53, PETRI_TRANSITIONS=42} [2024-06-28 03:39:35,276 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 23 predicate places. [2024-06-28 03:39:35,276 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 42 transitions, 232 flow [2024-06-28 03:39:35,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:35,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:35,277 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:35,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:39:35,277 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:35,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:35,278 INFO L85 PathProgramCache]: Analyzing trace with hash 156149999, now seen corresponding path program 1 times [2024-06-28 03:39:35,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:35,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408158212] [2024-06-28 03:39:35,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:35,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:35,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:35,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:35,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:35,965 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408158212] [2024-06-28 03:39:35,965 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408158212] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:35,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:35,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:35,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402036171] [2024-06-28 03:39:35,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:35,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:35,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:35,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:35,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:36,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:36,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 42 transitions, 232 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:36,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:36,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:36,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:36,248 INFO L124 PetriNetUnfolderBase]: 205/368 cut-off events. [2024-06-28 03:39:36,248 INFO L125 PetriNetUnfolderBase]: For 2148/2148 co-relation queries the response was YES. [2024-06-28 03:39:36,249 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1511 conditions, 368 events. 205/368 cut-off events. For 2148/2148 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1251 event pairs, 50 based on Foata normal form. 1/369 useless extension candidates. Maximal degree in co-relation 1486. Up to 345 conditions per place. [2024-06-28 03:39:36,251 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 42 selfloop transitions, 10 changer transitions 0/54 dead transitions. [2024-06-28 03:39:36,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 54 transitions, 372 flow [2024-06-28 03:39:36,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:36,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:36,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-28 03:39:36,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34101382488479265 [2024-06-28 03:39:36,254 INFO L175 Difference]: Start difference. First operand has 53 places, 42 transitions, 232 flow. Second operand 7 states and 74 transitions. [2024-06-28 03:39:36,254 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 54 transitions, 372 flow [2024-06-28 03:39:36,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 54 transitions, 352 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:36,258 INFO L231 Difference]: Finished difference. Result has 57 places, 44 transitions, 253 flow [2024-06-28 03:39:36,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=253, PETRI_PLACES=57, PETRI_TRANSITIONS=44} [2024-06-28 03:39:36,259 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 27 predicate places. [2024-06-28 03:39:36,260 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 44 transitions, 253 flow [2024-06-28 03:39:36,260 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:36,260 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:36,260 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:36,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:39:36,261 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:36,261 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:36,261 INFO L85 PathProgramCache]: Analyzing trace with hash 156149813, now seen corresponding path program 2 times [2024-06-28 03:39:36,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:36,262 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741320488] [2024-06-28 03:39:36,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:36,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:36,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:36,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:36,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:36,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741320488] [2024-06-28 03:39:36,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741320488] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:36,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:36,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:36,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956746976] [2024-06-28 03:39:36,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:36,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:36,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:36,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:36,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:37,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:37,018 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 44 transitions, 253 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:37,018 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:37,018 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:37,018 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:37,204 INFO L124 PetriNetUnfolderBase]: 204/374 cut-off events. [2024-06-28 03:39:37,205 INFO L125 PetriNetUnfolderBase]: For 2784/2784 co-relation queries the response was YES. [2024-06-28 03:39:37,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1615 conditions, 374 events. 204/374 cut-off events. For 2784/2784 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1309 event pairs, 48 based on Foata normal form. 2/376 useless extension candidates. Maximal degree in co-relation 1589. Up to 301 conditions per place. [2024-06-28 03:39:37,208 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 40 selfloop transitions, 16 changer transitions 0/61 dead transitions. [2024-06-28 03:39:37,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 61 transitions, 453 flow [2024-06-28 03:39:37,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:37,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:37,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-06-28 03:39:37,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39631336405529954 [2024-06-28 03:39:37,210 INFO L175 Difference]: Start difference. First operand has 57 places, 44 transitions, 253 flow. Second operand 7 states and 86 transitions. [2024-06-28 03:39:37,210 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 61 transitions, 453 flow [2024-06-28 03:39:37,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 61 transitions, 428 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:37,214 INFO L231 Difference]: Finished difference. Result has 59 places, 48 transitions, 301 flow [2024-06-28 03:39:37,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=301, PETRI_PLACES=59, PETRI_TRANSITIONS=48} [2024-06-28 03:39:37,216 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 29 predicate places. [2024-06-28 03:39:37,216 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 48 transitions, 301 flow [2024-06-28 03:39:37,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:37,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:37,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:37,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:39:37,219 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:37,219 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:37,219 INFO L85 PathProgramCache]: Analyzing trace with hash 333281519, now seen corresponding path program 2 times [2024-06-28 03:39:37,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:37,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145067283] [2024-06-28 03:39:37,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:37,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:37,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:37,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:37,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:37,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145067283] [2024-06-28 03:39:37,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145067283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:37,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:37,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:37,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146951262] [2024-06-28 03:39:37,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:37,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:37,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:37,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:37,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:37,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:37,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 48 transitions, 301 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:37,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:37,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:37,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:38,164 INFO L124 PetriNetUnfolderBase]: 219/392 cut-off events. [2024-06-28 03:39:38,165 INFO L125 PetriNetUnfolderBase]: For 3308/3312 co-relation queries the response was YES. [2024-06-28 03:39:38,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1777 conditions, 392 events. 219/392 cut-off events. For 3308/3312 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1361 event pairs, 55 based on Foata normal form. 5/397 useless extension candidates. Maximal degree in co-relation 1750. Up to 352 conditions per place. [2024-06-28 03:39:38,168 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 41 selfloop transitions, 17 changer transitions 0/60 dead transitions. [2024-06-28 03:39:38,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 491 flow [2024-06-28 03:39:38,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:38,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:38,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 76 transitions. [2024-06-28 03:39:38,170 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35023041474654376 [2024-06-28 03:39:38,170 INFO L175 Difference]: Start difference. First operand has 59 places, 48 transitions, 301 flow. Second operand 7 states and 76 transitions. [2024-06-28 03:39:38,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 491 flow [2024-06-28 03:39:38,173 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 469 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:38,175 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 354 flow [2024-06-28 03:39:38,175 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=279, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=354, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-06-28 03:39:38,177 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 33 predicate places. [2024-06-28 03:39:38,177 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 354 flow [2024-06-28 03:39:38,178 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:38,178 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:38,178 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:38,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:39:38,178 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:38,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:38,178 INFO L85 PathProgramCache]: Analyzing trace with hash -1385657019, now seen corresponding path program 3 times [2024-06-28 03:39:38,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:38,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597823830] [2024-06-28 03:39:38,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:38,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:38,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:38,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:38,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:38,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597823830] [2024-06-28 03:39:38,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597823830] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:38,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:38,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:38,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632047545] [2024-06-28 03:39:38,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:38,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:38,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:38,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:38,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:39,013 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:39,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 354 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:39,014 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:39,014 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:39,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:39,169 INFO L124 PetriNetUnfolderBase]: 202/374 cut-off events. [2024-06-28 03:39:39,169 INFO L125 PetriNetUnfolderBase]: For 3804/3806 co-relation queries the response was YES. [2024-06-28 03:39:39,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1752 conditions, 374 events. 202/374 cut-off events. For 3804/3806 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1339 event pairs, 58 based on Foata normal form. 2/376 useless extension candidates. Maximal degree in co-relation 1723. Up to 285 conditions per place. [2024-06-28 03:39:39,172 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 37 selfloop transitions, 20 changer transitions 0/64 dead transitions. [2024-06-28 03:39:39,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 64 transitions, 540 flow [2024-06-28 03:39:39,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:39,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:39,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-28 03:39:39,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-28 03:39:39,174 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 354 flow. Second operand 7 states and 85 transitions. [2024-06-28 03:39:39,174 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 64 transitions, 540 flow [2024-06-28 03:39:39,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 64 transitions, 514 flow, removed 6 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:39,179 INFO L231 Difference]: Finished difference. Result has 67 places, 54 transitions, 397 flow [2024-06-28 03:39:39,179 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=328, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=397, PETRI_PLACES=67, PETRI_TRANSITIONS=54} [2024-06-28 03:39:39,179 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 37 predicate places. [2024-06-28 03:39:39,179 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 54 transitions, 397 flow [2024-06-28 03:39:39,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:39,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:39,180 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:39,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:39:39,180 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:39,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:39,181 INFO L85 PathProgramCache]: Analyzing trace with hash 333518669, now seen corresponding path program 3 times [2024-06-28 03:39:39,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:39,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495086741] [2024-06-28 03:39:39,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:39,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:39,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:39,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:39,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:39,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495086741] [2024-06-28 03:39:39,944 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1495086741] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:39,944 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:39,944 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:39:39,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170149915] [2024-06-28 03:39:39,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:39,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:39:39,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:39,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:39:39,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:39:39,987 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:39,987 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 54 transitions, 397 flow. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:39,987 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:39,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:39,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:40,121 INFO L124 PetriNetUnfolderBase]: 213/383 cut-off events. [2024-06-28 03:39:40,122 INFO L125 PetriNetUnfolderBase]: For 4102/4106 co-relation queries the response was YES. [2024-06-28 03:39:40,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1877 conditions, 383 events. 213/383 cut-off events. For 4102/4106 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1348 event pairs, 54 based on Foata normal form. 5/388 useless extension candidates. Maximal degree in co-relation 1846. Up to 344 conditions per place. [2024-06-28 03:39:40,125 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 41 selfloop transitions, 18 changer transitions 0/61 dead transitions. [2024-06-28 03:39:40,125 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 61 transitions, 531 flow [2024-06-28 03:39:40,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:40,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:40,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-28 03:39:40,126 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34101382488479265 [2024-06-28 03:39:40,127 INFO L175 Difference]: Start difference. First operand has 67 places, 54 transitions, 397 flow. Second operand 7 states and 74 transitions. [2024-06-28 03:39:40,127 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 61 transitions, 531 flow [2024-06-28 03:39:40,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 61 transitions, 468 flow, removed 13 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:40,132 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 375 flow [2024-06-28 03:39:40,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=375, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2024-06-28 03:39:40,133 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 39 predicate places. [2024-06-28 03:39:40,134 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 375 flow [2024-06-28 03:39:40,134 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 8 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:40,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:40,134 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:40,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:39:40,134 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:40,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:40,135 INFO L85 PathProgramCache]: Analyzing trace with hash -45321528, now seen corresponding path program 1 times [2024-06-28 03:39:40,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:40,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1733387307] [2024-06-28 03:39:40,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:40,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:40,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:41,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:41,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:41,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1733387307] [2024-06-28 03:39:41,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1733387307] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:41,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:41,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:41,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252322145] [2024-06-28 03:39:41,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:41,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:41,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:41,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:41,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:41,131 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:41,131 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 375 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:41,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:41,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:41,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:41,378 INFO L124 PetriNetUnfolderBase]: 229/422 cut-off events. [2024-06-28 03:39:41,379 INFO L125 PetriNetUnfolderBase]: For 4627/4627 co-relation queries the response was YES. [2024-06-28 03:39:41,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2034 conditions, 422 events. 229/422 cut-off events. For 4627/4627 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1581 event pairs, 47 based on Foata normal form. 1/423 useless extension candidates. Maximal degree in co-relation 2002. Up to 336 conditions per place. [2024-06-28 03:39:41,383 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 54 selfloop transitions, 21 changer transitions 0/82 dead transitions. [2024-06-28 03:39:41,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 82 transitions, 673 flow [2024-06-28 03:39:41,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:41,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:41,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-28 03:39:41,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3911290322580645 [2024-06-28 03:39:41,385 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 375 flow. Second operand 8 states and 97 transitions. [2024-06-28 03:39:41,386 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 82 transitions, 673 flow [2024-06-28 03:39:41,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 82 transitions, 628 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:41,392 INFO L231 Difference]: Finished difference. Result has 73 places, 67 transitions, 506 flow [2024-06-28 03:39:41,392 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=506, PETRI_PLACES=73, PETRI_TRANSITIONS=67} [2024-06-28 03:39:41,392 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 43 predicate places. [2024-06-28 03:39:41,393 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 67 transitions, 506 flow [2024-06-28 03:39:41,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:41,393 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:41,393 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:41,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:39:41,394 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:41,394 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:41,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1512606054, now seen corresponding path program 2 times [2024-06-28 03:39:41,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:41,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625315517] [2024-06-28 03:39:41,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:41,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:41,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:42,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:42,269 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:42,269 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1625315517] [2024-06-28 03:39:42,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1625315517] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:42,270 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:42,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:42,270 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1808684697] [2024-06-28 03:39:42,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:42,270 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:42,270 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:42,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:42,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:42,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:39:42,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 67 transitions, 506 flow. Second operand has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:42,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:42,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:39:42,345 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:42,645 INFO L124 PetriNetUnfolderBase]: 228/420 cut-off events. [2024-06-28 03:39:42,645 INFO L125 PetriNetUnfolderBase]: For 5135/5135 co-relation queries the response was YES. [2024-06-28 03:39:42,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2104 conditions, 420 events. 228/420 cut-off events. For 5135/5135 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1562 event pairs, 50 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 2069. Up to 321 conditions per place. [2024-06-28 03:39:42,649 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 48 selfloop transitions, 25 changer transitions 0/80 dead transitions. [2024-06-28 03:39:42,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 80 transitions, 692 flow [2024-06-28 03:39:42,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:39:42,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:39:42,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-06-28 03:39:42,651 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.391705069124424 [2024-06-28 03:39:42,652 INFO L175 Difference]: Start difference. First operand has 73 places, 67 transitions, 506 flow. Second operand 7 states and 85 transitions. [2024-06-28 03:39:42,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 80 transitions, 692 flow [2024-06-28 03:39:42,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 80 transitions, 658 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:42,659 INFO L231 Difference]: Finished difference. Result has 77 places, 67 transitions, 538 flow [2024-06-28 03:39:42,659 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=472, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=538, PETRI_PLACES=77, PETRI_TRANSITIONS=67} [2024-06-28 03:39:42,660 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2024-06-28 03:39:42,660 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 67 transitions, 538 flow [2024-06-28 03:39:42,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.333333333333333) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:42,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:42,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:42,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:39:42,661 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:42,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:42,661 INFO L85 PathProgramCache]: Analyzing trace with hash 541959275, now seen corresponding path program 1 times [2024-06-28 03:39:42,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:42,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086774073] [2024-06-28 03:39:42,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:42,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:42,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:43,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:43,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:43,411 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086774073] [2024-06-28 03:39:43,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086774073] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:43,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:43,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:43,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494860967] [2024-06-28 03:39:43,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:43,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:43,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:43,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:43,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:43,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:43,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 67 transitions, 538 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:43,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:43,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:43,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:43,766 INFO L124 PetriNetUnfolderBase]: 252/452 cut-off events. [2024-06-28 03:39:43,766 INFO L125 PetriNetUnfolderBase]: For 5924/5924 co-relation queries the response was YES. [2024-06-28 03:39:43,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2320 conditions, 452 events. 252/452 cut-off events. For 5924/5924 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1674 event pairs, 56 based on Foata normal form. 2/454 useless extension candidates. Maximal degree in co-relation 2284. Up to 381 conditions per place. [2024-06-28 03:39:43,770 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 62 selfloop transitions, 24 changer transitions 0/88 dead transitions. [2024-06-28 03:39:43,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 88 transitions, 833 flow [2024-06-28 03:39:43,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:43,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:43,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:39:43,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 03:39:43,772 INFO L175 Difference]: Start difference. First operand has 77 places, 67 transitions, 538 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:39:43,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 88 transitions, 833 flow [2024-06-28 03:39:43,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 88 transitions, 765 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:43,780 INFO L231 Difference]: Finished difference. Result has 85 places, 76 transitions, 652 flow [2024-06-28 03:39:43,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=480, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=652, PETRI_PLACES=85, PETRI_TRANSITIONS=76} [2024-06-28 03:39:43,781 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2024-06-28 03:39:43,781 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 76 transitions, 652 flow [2024-06-28 03:39:43,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:43,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:43,782 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:43,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:39:43,782 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:43,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:43,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1702775015, now seen corresponding path program 2 times [2024-06-28 03:39:43,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:43,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127320336] [2024-06-28 03:39:43,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:43,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:44,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:44,473 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:44,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127320336] [2024-06-28 03:39:44,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127320336] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:44,473 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:44,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:44,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712909686] [2024-06-28 03:39:44,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:44,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:44,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:44,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:44,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:44,540 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:44,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 76 transitions, 652 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:44,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:44,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:44,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:44,756 INFO L124 PetriNetUnfolderBase]: 258/462 cut-off events. [2024-06-28 03:39:44,756 INFO L125 PetriNetUnfolderBase]: For 6113/6113 co-relation queries the response was YES. [2024-06-28 03:39:44,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2458 conditions, 462 events. 258/462 cut-off events. For 6113/6113 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1720 event pairs, 56 based on Foata normal form. 2/464 useless extension candidates. Maximal degree in co-relation 2416. Up to 391 conditions per place. [2024-06-28 03:39:44,760 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 65 selfloop transitions, 28 changer transitions 0/95 dead transitions. [2024-06-28 03:39:44,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 95 transitions, 919 flow [2024-06-28 03:39:44,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:44,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:44,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:39:44,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 03:39:44,763 INFO L175 Difference]: Start difference. First operand has 85 places, 76 transitions, 652 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:39:44,763 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 95 transitions, 919 flow [2024-06-28 03:39:44,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 95 transitions, 881 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-06-28 03:39:44,776 INFO L231 Difference]: Finished difference. Result has 93 places, 80 transitions, 728 flow [2024-06-28 03:39:44,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=614, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=728, PETRI_PLACES=93, PETRI_TRANSITIONS=80} [2024-06-28 03:39:44,777 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 63 predicate places. [2024-06-28 03:39:44,778 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 80 transitions, 728 flow [2024-06-28 03:39:44,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:44,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:44,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:44,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:39:44,778 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:44,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:44,779 INFO L85 PathProgramCache]: Analyzing trace with hash 2098227331, now seen corresponding path program 3 times [2024-06-28 03:39:44,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:44,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053123409] [2024-06-28 03:39:44,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:44,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:44,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:45,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:45,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:45,457 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053123409] [2024-06-28 03:39:45,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053123409] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:45,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:45,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:45,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560140727] [2024-06-28 03:39:45,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:45,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:45,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:45,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:45,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:45,505 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:45,506 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 80 transitions, 728 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:45,506 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:45,506 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:45,506 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:45,786 INFO L124 PetriNetUnfolderBase]: 264/472 cut-off events. [2024-06-28 03:39:45,786 INFO L125 PetriNetUnfolderBase]: For 6963/6963 co-relation queries the response was YES. [2024-06-28 03:39:45,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2602 conditions, 472 events. 264/472 cut-off events. For 6963/6963 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1765 event pairs, 54 based on Foata normal form. 2/474 useless extension candidates. Maximal degree in co-relation 2557. Up to 401 conditions per place. [2024-06-28 03:39:45,791 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 70 selfloop transitions, 25 changer transitions 0/97 dead transitions. [2024-06-28 03:39:45,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 97 transitions, 994 flow [2024-06-28 03:39:45,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:45,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:45,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:39:45,793 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 03:39:45,793 INFO L175 Difference]: Start difference. First operand has 93 places, 80 transitions, 728 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:39:45,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 97 transitions, 994 flow [2024-06-28 03:39:45,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 97 transitions, 913 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:45,803 INFO L231 Difference]: Finished difference. Result has 97 places, 83 transitions, 747 flow [2024-06-28 03:39:45,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=649, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=747, PETRI_PLACES=97, PETRI_TRANSITIONS=83} [2024-06-28 03:39:45,803 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 67 predicate places. [2024-06-28 03:39:45,804 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 83 transitions, 747 flow [2024-06-28 03:39:45,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:45,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:45,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:45,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:39:45,804 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:45,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:45,805 INFO L85 PathProgramCache]: Analyzing trace with hash 2101946401, now seen corresponding path program 4 times [2024-06-28 03:39:45,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:45,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921690781] [2024-06-28 03:39:45,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:45,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:45,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:46,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:46,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921690781] [2024-06-28 03:39:46,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921690781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:46,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:46,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:46,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064412150] [2024-06-28 03:39:46,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:46,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:46,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:46,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:46,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:46,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:46,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 83 transitions, 747 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:46,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:46,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:46,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:46,823 INFO L124 PetriNetUnfolderBase]: 300/531 cut-off events. [2024-06-28 03:39:46,824 INFO L125 PetriNetUnfolderBase]: For 8559/8559 co-relation queries the response was YES. [2024-06-28 03:39:46,826 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2993 conditions, 531 events. 300/531 cut-off events. For 8559/8559 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2060 event pairs, 58 based on Foata normal form. 2/533 useless extension candidates. Maximal degree in co-relation 2947. Up to 405 conditions per place. [2024-06-28 03:39:46,830 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 73 selfloop transitions, 38 changer transitions 0/113 dead transitions. [2024-06-28 03:39:46,830 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 113 transitions, 1231 flow [2024-06-28 03:39:46,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:46,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:46,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 03:39:46,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-28 03:39:46,831 INFO L175 Difference]: Start difference. First operand has 97 places, 83 transitions, 747 flow. Second operand 9 states and 103 transitions. [2024-06-28 03:39:46,831 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 113 transitions, 1231 flow [2024-06-28 03:39:46,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 113 transitions, 1167 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:46,847 INFO L231 Difference]: Finished difference. Result has 103 places, 95 transitions, 930 flow [2024-06-28 03:39:46,847 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=930, PETRI_PLACES=103, PETRI_TRANSITIONS=95} [2024-06-28 03:39:46,848 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 73 predicate places. [2024-06-28 03:39:46,848 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 95 transitions, 930 flow [2024-06-28 03:39:46,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:46,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:46,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:46,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:39:46,849 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:46,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:46,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1546422848, now seen corresponding path program 1 times [2024-06-28 03:39:46,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:46,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490001265] [2024-06-28 03:39:46,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:46,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:47,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:47,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:47,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490001265] [2024-06-28 03:39:47,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490001265] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:47,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:47,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:47,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328557220] [2024-06-28 03:39:47,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:47,655 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:47,655 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:47,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:47,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:47,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:47,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 95 transitions, 930 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:47,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:47,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:47,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:47,930 INFO L124 PetriNetUnfolderBase]: 303/538 cut-off events. [2024-06-28 03:39:47,930 INFO L125 PetriNetUnfolderBase]: For 9475/9475 co-relation queries the response was YES. [2024-06-28 03:39:47,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3161 conditions, 538 events. 303/538 cut-off events. For 9475/9475 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2117 event pairs, 89 based on Foata normal form. 1/539 useless extension candidates. Maximal degree in co-relation 3112. Up to 505 conditions per place. [2024-06-28 03:39:47,937 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 91 selfloop transitions, 17 changer transitions 0/110 dead transitions. [2024-06-28 03:39:47,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 110 transitions, 1210 flow [2024-06-28 03:39:47,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:47,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:47,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-28 03:39:47,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32616487455197135 [2024-06-28 03:39:47,939 INFO L175 Difference]: Start difference. First operand has 103 places, 95 transitions, 930 flow. Second operand 9 states and 91 transitions. [2024-06-28 03:39:47,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 110 transitions, 1210 flow [2024-06-28 03:39:47,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 110 transitions, 1156 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:47,955 INFO L231 Difference]: Finished difference. Result has 110 places, 99 transitions, 968 flow [2024-06-28 03:39:47,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=878, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=968, PETRI_PLACES=110, PETRI_TRANSITIONS=99} [2024-06-28 03:39:47,955 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 80 predicate places. [2024-06-28 03:39:47,956 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 99 transitions, 968 flow [2024-06-28 03:39:47,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:47,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:47,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:47,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:39:47,957 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:47,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:47,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1971370275, now seen corresponding path program 5 times [2024-06-28 03:39:47,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:47,958 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58947091] [2024-06-28 03:39:47,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:47,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:48,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:48,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:48,710 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58947091] [2024-06-28 03:39:48,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58947091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:48,711 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:48,711 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:48,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920321671] [2024-06-28 03:39:48,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:48,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:48,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:48,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:48,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:48,759 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:48,759 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 99 transitions, 968 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:48,759 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:48,759 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:48,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:49,000 INFO L124 PetriNetUnfolderBase]: 299/530 cut-off events. [2024-06-28 03:39:49,000 INFO L125 PetriNetUnfolderBase]: For 9688/9688 co-relation queries the response was YES. [2024-06-28 03:39:49,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3153 conditions, 530 events. 299/530 cut-off events. For 9688/9688 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2052 event pairs, 53 based on Foata normal form. 2/532 useless extension candidates. Maximal degree in co-relation 3100. Up to 407 conditions per place. [2024-06-28 03:39:49,009 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 70 selfloop transitions, 43 changer transitions 0/115 dead transitions. [2024-06-28 03:39:49,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 115 transitions, 1287 flow [2024-06-28 03:39:49,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:49,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:49,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 03:39:49,011 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-28 03:39:49,011 INFO L175 Difference]: Start difference. First operand has 110 places, 99 transitions, 968 flow. Second operand 9 states and 101 transitions. [2024-06-28 03:39:49,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 115 transitions, 1287 flow [2024-06-28 03:39:49,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 115 transitions, 1228 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:49,035 INFO L231 Difference]: Finished difference. Result has 116 places, 100 transitions, 1027 flow [2024-06-28 03:39:49,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=909, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1027, PETRI_PLACES=116, PETRI_TRANSITIONS=100} [2024-06-28 03:39:49,036 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 86 predicate places. [2024-06-28 03:39:49,036 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 100 transitions, 1027 flow [2024-06-28 03:39:49,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:49,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:49,037 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:49,037 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:39:49,037 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:49,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:49,037 INFO L85 PathProgramCache]: Analyzing trace with hash -324311225, now seen corresponding path program 6 times [2024-06-28 03:39:49,038 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:49,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316987638] [2024-06-28 03:39:49,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:49,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:49,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:49,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:49,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:49,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316987638] [2024-06-28 03:39:49,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316987638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:49,851 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:49,851 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:49,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225367222] [2024-06-28 03:39:49,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:49,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:49,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:49,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:49,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:49,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:49,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 100 transitions, 1027 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:49,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:49,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:49,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:50,128 INFO L124 PetriNetUnfolderBase]: 320/564 cut-off events. [2024-06-28 03:39:50,129 INFO L125 PetriNetUnfolderBase]: For 11728/11728 co-relation queries the response was YES. [2024-06-28 03:39:50,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3549 conditions, 564 events. 320/564 cut-off events. For 11728/11728 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2211 event pairs, 59 based on Foata normal form. 2/566 useless extension candidates. Maximal degree in co-relation 3494. Up to 391 conditions per place. [2024-06-28 03:39:50,135 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 67 selfloop transitions, 51 changer transitions 0/120 dead transitions. [2024-06-28 03:39:50,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 120 transitions, 1491 flow [2024-06-28 03:39:50,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:50,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:50,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-28 03:39:50,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:39:50,137 INFO L175 Difference]: Start difference. First operand has 116 places, 100 transitions, 1027 flow. Second operand 8 states and 92 transitions. [2024-06-28 03:39:50,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 120 transitions, 1491 flow [2024-06-28 03:39:50,154 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 120 transitions, 1428 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:50,156 INFO L231 Difference]: Finished difference. Result has 118 places, 106 transitions, 1180 flow [2024-06-28 03:39:50,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=964, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=100, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1180, PETRI_PLACES=118, PETRI_TRANSITIONS=106} [2024-06-28 03:39:50,157 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 88 predicate places. [2024-06-28 03:39:50,157 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 106 transitions, 1180 flow [2024-06-28 03:39:50,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:50,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:50,158 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:50,158 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:39:50,158 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:50,159 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:50,159 INFO L85 PathProgramCache]: Analyzing trace with hash 545683925, now seen corresponding path program 7 times [2024-06-28 03:39:50,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:50,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455618250] [2024-06-28 03:39:50,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:50,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:50,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:50,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:50,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455618250] [2024-06-28 03:39:50,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455618250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:50,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:50,906 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:50,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90088639] [2024-06-28 03:39:50,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:50,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:50,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:50,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:50,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:50,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:50,989 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 106 transitions, 1180 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:50,989 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:50,989 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:50,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:51,225 INFO L124 PetriNetUnfolderBase]: 316/558 cut-off events. [2024-06-28 03:39:51,225 INFO L125 PetriNetUnfolderBase]: For 12466/12466 co-relation queries the response was YES. [2024-06-28 03:39:51,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3586 conditions, 558 events. 316/558 cut-off events. For 12466/12466 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2187 event pairs, 52 based on Foata normal form. 2/560 useless extension candidates. Maximal degree in co-relation 3531. Up to 388 conditions per place. [2024-06-28 03:39:51,230 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 60 selfloop transitions, 57 changer transitions 0/119 dead transitions. [2024-06-28 03:39:51,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 119 transitions, 1496 flow [2024-06-28 03:39:51,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:51,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:51,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-28 03:39:51,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 03:39:51,232 INFO L175 Difference]: Start difference. First operand has 118 places, 106 transitions, 1180 flow. Second operand 8 states and 90 transitions. [2024-06-28 03:39:51,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 119 transitions, 1496 flow [2024-06-28 03:39:51,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 119 transitions, 1415 flow, removed 29 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:51,253 INFO L231 Difference]: Finished difference. Result has 122 places, 106 transitions, 1223 flow [2024-06-28 03:39:51,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1101, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1223, PETRI_PLACES=122, PETRI_TRANSITIONS=106} [2024-06-28 03:39:51,253 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 92 predicate places. [2024-06-28 03:39:51,253 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 106 transitions, 1223 flow [2024-06-28 03:39:51,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:51,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:51,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:51,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:39:51,254 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:51,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:51,255 INFO L85 PathProgramCache]: Analyzing trace with hash 545684142, now seen corresponding path program 2 times [2024-06-28 03:39:51,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:51,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285703812] [2024-06-28 03:39:51,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:51,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:51,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:51,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:51,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:51,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285703812] [2024-06-28 03:39:51,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285703812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:51,961 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:51,961 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:51,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663760481] [2024-06-28 03:39:51,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:51,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:51,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:51,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:51,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:52,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:52,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 106 transitions, 1223 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:52,011 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:52,011 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:52,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:52,248 INFO L124 PetriNetUnfolderBase]: 319/565 cut-off events. [2024-06-28 03:39:52,248 INFO L125 PetriNetUnfolderBase]: For 11957/11957 co-relation queries the response was YES. [2024-06-28 03:39:52,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3652 conditions, 565 events. 319/565 cut-off events. For 11957/11957 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2240 event pairs, 91 based on Foata normal form. 1/566 useless extension candidates. Maximal degree in co-relation 3596. Up to 523 conditions per place. [2024-06-28 03:39:52,261 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 93 selfloop transitions, 22 changer transitions 0/117 dead transitions. [2024-06-28 03:39:52,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 117 transitions, 1493 flow [2024-06-28 03:39:52,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:52,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:52,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 82 transitions. [2024-06-28 03:39:52,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-28 03:39:52,263 INFO L175 Difference]: Start difference. First operand has 122 places, 106 transitions, 1223 flow. Second operand 8 states and 82 transitions. [2024-06-28 03:39:52,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 117 transitions, 1493 flow [2024-06-28 03:39:52,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 117 transitions, 1392 flow, removed 3 selfloop flow, removed 7 redundant places. [2024-06-28 03:39:52,285 INFO L231 Difference]: Finished difference. Result has 123 places, 108 transitions, 1196 flow [2024-06-28 03:39:52,285 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1122, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1196, PETRI_PLACES=123, PETRI_TRANSITIONS=108} [2024-06-28 03:39:52,286 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 93 predicate places. [2024-06-28 03:39:52,286 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 108 transitions, 1196 flow [2024-06-28 03:39:52,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:52,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:52,287 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:52,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:39:52,287 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:52,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:52,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1741793749, now seen corresponding path program 8 times [2024-06-28 03:39:52,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:52,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011194250] [2024-06-28 03:39:52,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:52,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:53,102 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:53,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:53,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011194250] [2024-06-28 03:39:53,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011194250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:53,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:53,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:53,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307144624] [2024-06-28 03:39:53,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:53,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:53,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:53,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:53,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:53,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:53,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 108 transitions, 1196 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:53,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:53,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:53,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:53,424 INFO L124 PetriNetUnfolderBase]: 335/589 cut-off events. [2024-06-28 03:39:53,425 INFO L125 PetriNetUnfolderBase]: For 12701/12701 co-relation queries the response was YES. [2024-06-28 03:39:53,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3819 conditions, 589 events. 335/589 cut-off events. For 12701/12701 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2356 event pairs, 71 based on Foata normal form. 2/591 useless extension candidates. Maximal degree in co-relation 3763. Up to 372 conditions per place. [2024-06-28 03:39:53,430 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 68 selfloop transitions, 58 changer transitions 0/128 dead transitions. [2024-06-28 03:39:53,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 128 transitions, 1726 flow [2024-06-28 03:39:53,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:53,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:53,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 95 transitions. [2024-06-28 03:39:53,432 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38306451612903225 [2024-06-28 03:39:53,432 INFO L175 Difference]: Start difference. First operand has 123 places, 108 transitions, 1196 flow. Second operand 8 states and 95 transitions. [2024-06-28 03:39:53,432 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 128 transitions, 1726 flow [2024-06-28 03:39:53,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 128 transitions, 1666 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:53,452 INFO L231 Difference]: Finished difference. Result has 125 places, 114 transitions, 1369 flow [2024-06-28 03:39:53,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1142, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1369, PETRI_PLACES=125, PETRI_TRANSITIONS=114} [2024-06-28 03:39:53,453 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-06-28 03:39:53,453 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 114 transitions, 1369 flow [2024-06-28 03:39:53,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:53,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:53,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:53,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:39:53,454 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:53,456 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:53,456 INFO L85 PathProgramCache]: Analyzing trace with hash 689574672, now seen corresponding path program 3 times [2024-06-28 03:39:53,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:53,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51041433] [2024-06-28 03:39:53,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:53,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:53,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:54,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:54,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:54,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51041433] [2024-06-28 03:39:54,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51041433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:54,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:54,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:54,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142535176] [2024-06-28 03:39:54,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:54,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:54,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:54,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:54,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:54,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:54,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 114 transitions, 1369 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:54,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:54,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:54,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:54,413 INFO L124 PetriNetUnfolderBase]: 338/596 cut-off events. [2024-06-28 03:39:54,413 INFO L125 PetriNetUnfolderBase]: For 13047/13047 co-relation queries the response was YES. [2024-06-28 03:39:54,416 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3939 conditions, 596 events. 338/596 cut-off events. For 13047/13047 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2399 event pairs, 97 based on Foata normal form. 1/597 useless extension candidates. Maximal degree in co-relation 3882. Up to 527 conditions per place. [2024-06-28 03:39:54,419 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 97 selfloop transitions, 29 changer transitions 0/128 dead transitions. [2024-06-28 03:39:54,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 128 transitions, 1729 flow [2024-06-28 03:39:54,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:54,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:54,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 03:39:54,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 03:39:54,420 INFO L175 Difference]: Start difference. First operand has 125 places, 114 transitions, 1369 flow. Second operand 8 states and 86 transitions. [2024-06-28 03:39:54,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 128 transitions, 1729 flow [2024-06-28 03:39:54,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 128 places, 128 transitions, 1593 flow, removed 23 selfloop flow, removed 4 redundant places. [2024-06-28 03:39:54,444 INFO L231 Difference]: Finished difference. Result has 130 places, 120 transitions, 1361 flow [2024-06-28 03:39:54,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1361, PETRI_PLACES=130, PETRI_TRANSITIONS=120} [2024-06-28 03:39:54,450 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 100 predicate places. [2024-06-28 03:39:54,450 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 120 transitions, 1361 flow [2024-06-28 03:39:54,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:54,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:54,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:54,451 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:39:54,451 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:54,451 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:54,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1741788169, now seen corresponding path program 9 times [2024-06-28 03:39:54,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:54,452 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376890244] [2024-06-28 03:39:54,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:54,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:54,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:55,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:55,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:55,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376890244] [2024-06-28 03:39:55,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376890244] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:55,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:55,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:55,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817080250] [2024-06-28 03:39:55,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:55,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:55,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:55,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:55,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:55,261 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:55,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 120 transitions, 1361 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:55,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:55,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:55,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:55,421 INFO L124 PetriNetUnfolderBase]: 334/588 cut-off events. [2024-06-28 03:39:55,422 INFO L125 PetriNetUnfolderBase]: For 12997/12997 co-relation queries the response was YES. [2024-06-28 03:39:55,425 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3813 conditions, 588 events. 334/588 cut-off events. For 12997/12997 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2349 event pairs, 71 based on Foata normal form. 2/590 useless extension candidates. Maximal degree in co-relation 3754. Up to 374 conditions per place. [2024-06-28 03:39:55,428 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 71 selfloop transitions, 59 changer transitions 0/132 dead transitions. [2024-06-28 03:39:55,428 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 132 transitions, 1749 flow [2024-06-28 03:39:55,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:55,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:55,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-28 03:39:55,429 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:39:55,429 INFO L175 Difference]: Start difference. First operand has 130 places, 120 transitions, 1361 flow. Second operand 8 states and 92 transitions. [2024-06-28 03:39:55,429 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 132 transitions, 1749 flow [2024-06-28 03:39:55,446 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 132 transitions, 1701 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-06-28 03:39:55,448 INFO L231 Difference]: Finished difference. Result has 135 places, 120 transitions, 1436 flow [2024-06-28 03:39:55,448 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1313, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1436, PETRI_PLACES=135, PETRI_TRANSITIONS=120} [2024-06-28 03:39:55,449 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 105 predicate places. [2024-06-28 03:39:55,449 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 120 transitions, 1436 flow [2024-06-28 03:39:55,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:55,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:55,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:55,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:39:55,450 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:55,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:55,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1749412526, now seen corresponding path program 4 times [2024-06-28 03:39:55,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:55,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617971843] [2024-06-28 03:39:55,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:55,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:55,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:56,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:56,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:56,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617971843] [2024-06-28 03:39:56,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617971843] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:56,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:56,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:56,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [30638625] [2024-06-28 03:39:56,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:56,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:56,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:56,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:56,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:56,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:56,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 120 transitions, 1436 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:56,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:56,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:56,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:56,400 INFO L124 PetriNetUnfolderBase]: 337/595 cut-off events. [2024-06-28 03:39:56,400 INFO L125 PetriNetUnfolderBase]: For 13955/13955 co-relation queries the response was YES. [2024-06-28 03:39:56,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3985 conditions, 595 events. 337/595 cut-off events. For 13955/13955 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2413 event pairs, 96 based on Foata normal form. 1/596 useless extension candidates. Maximal degree in co-relation 3924. Up to 525 conditions per place. [2024-06-28 03:39:56,406 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 92 selfloop transitions, 36 changer transitions 0/130 dead transitions. [2024-06-28 03:39:56,406 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 130 transitions, 1782 flow [2024-06-28 03:39:56,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:56,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:56,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-28 03:39:56,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 03:39:56,408 INFO L175 Difference]: Start difference. First operand has 135 places, 120 transitions, 1436 flow. Second operand 8 states and 84 transitions. [2024-06-28 03:39:56,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 130 transitions, 1782 flow [2024-06-28 03:39:56,432 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 130 transitions, 1666 flow, removed 2 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:56,434 INFO L231 Difference]: Finished difference. Result has 137 places, 122 transitions, 1419 flow [2024-06-28 03:39:56,434 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1419, PETRI_PLACES=137, PETRI_TRANSITIONS=122} [2024-06-28 03:39:56,435 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 107 predicate places. [2024-06-28 03:39:56,435 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 122 transitions, 1419 flow [2024-06-28 03:39:56,435 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:56,435 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:56,435 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:56,436 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:39:56,436 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:56,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:56,436 INFO L85 PathProgramCache]: Analyzing trace with hash 1749145399, now seen corresponding path program 10 times [2024-06-28 03:39:56,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:56,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995080058] [2024-06-28 03:39:56,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:56,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:56,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:57,197 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:57,197 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:57,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1995080058] [2024-06-28 03:39:57,197 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1995080058] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:57,197 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:57,197 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:57,197 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795510585] [2024-06-28 03:39:57,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:57,198 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:57,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:57,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:57,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:57,266 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:57,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 122 transitions, 1419 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:57,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:57,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:57,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:57,457 INFO L124 PetriNetUnfolderBase]: 333/587 cut-off events. [2024-06-28 03:39:57,457 INFO L125 PetriNetUnfolderBase]: For 14166/14166 co-relation queries the response was YES. [2024-06-28 03:39:57,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3860 conditions, 587 events. 333/587 cut-off events. For 14166/14166 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2362 event pairs, 60 based on Foata normal form. 2/589 useless extension candidates. Maximal degree in co-relation 3798. Up to 376 conditions per place. [2024-06-28 03:39:57,462 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 63 selfloop transitions, 68 changer transitions 0/133 dead transitions. [2024-06-28 03:39:57,463 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 133 transitions, 1763 flow [2024-06-28 03:39:57,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:57,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:57,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-28 03:39:57,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 03:39:57,464 INFO L175 Difference]: Start difference. First operand has 137 places, 122 transitions, 1419 flow. Second operand 8 states and 90 transitions. [2024-06-28 03:39:57,464 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 133 transitions, 1763 flow [2024-06-28 03:39:57,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 133 transitions, 1673 flow, removed 18 selfloop flow, removed 5 redundant places. [2024-06-28 03:39:57,491 INFO L231 Difference]: Finished difference. Result has 140 places, 122 transitions, 1470 flow [2024-06-28 03:39:57,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1329, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1470, PETRI_PLACES=140, PETRI_TRANSITIONS=122} [2024-06-28 03:39:57,492 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-28 03:39:57,492 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 122 transitions, 1470 flow [2024-06-28 03:39:57,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:57,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:57,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:57,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:39:57,493 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:57,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:57,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1749145616, now seen corresponding path program 5 times [2024-06-28 03:39:57,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:57,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794901141] [2024-06-28 03:39:57,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:57,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:58,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:58,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:58,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794901141] [2024-06-28 03:39:58,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794901141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:58,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:58,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:39:58,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674456218] [2024-06-28 03:39:58,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:58,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:39:58,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:58,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:39:58,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:39:58,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:58,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 122 transitions, 1470 flow. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:58,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:58,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:58,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:58,416 INFO L124 PetriNetUnfolderBase]: 331/586 cut-off events. [2024-06-28 03:39:58,416 INFO L125 PetriNetUnfolderBase]: For 14586/14586 co-relation queries the response was YES. [2024-06-28 03:39:58,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3926 conditions, 586 events. 331/586 cut-off events. For 14586/14586 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2379 event pairs, 95 based on Foata normal form. 1/587 useless extension candidates. Maximal degree in co-relation 3863. Up to 517 conditions per place. [2024-06-28 03:39:58,420 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 94 selfloop transitions, 33 changer transitions 0/129 dead transitions. [2024-06-28 03:39:58,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 129 transitions, 1740 flow [2024-06-28 03:39:58,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:39:58,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:39:58,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-28 03:39:58,421 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 03:39:58,421 INFO L175 Difference]: Start difference. First operand has 140 places, 122 transitions, 1470 flow. Second operand 8 states and 84 transitions. [2024-06-28 03:39:58,421 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 129 transitions, 1740 flow [2024-06-28 03:39:58,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 139 places, 129 transitions, 1576 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 03:39:58,441 INFO L231 Difference]: Finished difference. Result has 140 places, 122 transitions, 1377 flow [2024-06-28 03:39:58,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1306, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1377, PETRI_PLACES=140, PETRI_TRANSITIONS=122} [2024-06-28 03:39:58,441 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 110 predicate places. [2024-06-28 03:39:58,442 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 122 transitions, 1377 flow [2024-06-28 03:39:58,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 9 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:58,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:58,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:58,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:39:58,442 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:58,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:58,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1749422446, now seen corresponding path program 1 times [2024-06-28 03:39:58,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:58,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819486793] [2024-06-28 03:39:58,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:58,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:58,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:39:59,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:39:59,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:39:59,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819486793] [2024-06-28 03:39:59,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819486793] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:39:59,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:39:59,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:39:59,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295234426] [2024-06-28 03:39:59,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:39:59,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:39:59,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:39:59,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:39:59,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:39:59,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:39:59,679 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 122 transitions, 1377 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:59,679 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:39:59,679 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:39:59,679 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:39:59,854 INFO L124 PetriNetUnfolderBase]: 329/583 cut-off events. [2024-06-28 03:39:59,854 INFO L125 PetriNetUnfolderBase]: For 14771/14771 co-relation queries the response was YES. [2024-06-28 03:39:59,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3797 conditions, 583 events. 329/583 cut-off events. For 14771/14771 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2369 event pairs, 113 based on Foata normal form. 1/584 useless extension candidates. Maximal degree in co-relation 3733. Up to 555 conditions per place. [2024-06-28 03:39:59,858 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 115 selfloop transitions, 15 changer transitions 0/132 dead transitions. [2024-06-28 03:39:59,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 132 transitions, 1667 flow [2024-06-28 03:39:59,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:39:59,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:39:59,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-28 03:39:59,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-28 03:39:59,859 INFO L175 Difference]: Start difference. First operand has 140 places, 122 transitions, 1377 flow. Second operand 9 states and 87 transitions. [2024-06-28 03:39:59,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 148 places, 132 transitions, 1667 flow [2024-06-28 03:39:59,877 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 132 transitions, 1610 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-06-28 03:39:59,880 INFO L231 Difference]: Finished difference. Result has 143 places, 124 transitions, 1371 flow [2024-06-28 03:39:59,880 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1320, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1371, PETRI_PLACES=143, PETRI_TRANSITIONS=124} [2024-06-28 03:39:59,880 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 113 predicate places. [2024-06-28 03:39:59,880 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 124 transitions, 1371 flow [2024-06-28 03:39:59,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:39:59,881 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:39:59,881 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:39:59,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:39:59,881 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:39:59,881 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:39:59,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1387546912, now seen corresponding path program 1 times [2024-06-28 03:39:59,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:39:59,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789473626] [2024-06-28 03:39:59,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:39:59,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:39:59,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:00,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:00,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:00,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789473626] [2024-06-28 03:40:00,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789473626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:00,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:00,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:00,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [690868719] [2024-06-28 03:40:00,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:00,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:00,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:00,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:00,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:00,793 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:00,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 124 transitions, 1371 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:00,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:00,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:00,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:01,007 INFO L124 PetriNetUnfolderBase]: 319/583 cut-off events. [2024-06-28 03:40:01,007 INFO L125 PetriNetUnfolderBase]: For 16958/16960 co-relation queries the response was YES. [2024-06-28 03:40:01,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3826 conditions, 583 events. 319/583 cut-off events. For 16958/16960 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2506 event pairs, 55 based on Foata normal form. 2/583 useless extension candidates. Maximal degree in co-relation 3761. Up to 433 conditions per place. [2024-06-28 03:40:01,013 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 98 selfloop transitions, 24 changer transitions 0/142 dead transitions. [2024-06-28 03:40:01,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 142 transitions, 1673 flow [2024-06-28 03:40:01,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:01,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:01,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 03:40:01,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3655913978494624 [2024-06-28 03:40:01,015 INFO L175 Difference]: Start difference. First operand has 143 places, 124 transitions, 1371 flow. Second operand 9 states and 102 transitions. [2024-06-28 03:40:01,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 142 transitions, 1673 flow [2024-06-28 03:40:01,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 142 transitions, 1575 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:40:01,045 INFO L231 Difference]: Finished difference. Result has 142 places, 126 transitions, 1345 flow [2024-06-28 03:40:01,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1345, PETRI_PLACES=142, PETRI_TRANSITIONS=126} [2024-06-28 03:40:01,045 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2024-06-28 03:40:01,046 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 126 transitions, 1345 flow [2024-06-28 03:40:01,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:01,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:01,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:01,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:40:01,046 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:01,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:01,047 INFO L85 PathProgramCache]: Analyzing trace with hash 637342662, now seen corresponding path program 2 times [2024-06-28 03:40:01,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:01,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820322647] [2024-06-28 03:40:01,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:01,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:01,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:01,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:01,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:01,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820322647] [2024-06-28 03:40:01,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820322647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:01,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:01,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:01,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303252393] [2024-06-28 03:40:01,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:01,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:01,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:01,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:01,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:01,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:01,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 126 transitions, 1345 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:01,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:01,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:01,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:02,088 INFO L124 PetriNetUnfolderBase]: 326/600 cut-off events. [2024-06-28 03:40:02,088 INFO L125 PetriNetUnfolderBase]: For 17100/17100 co-relation queries the response was YES. [2024-06-28 03:40:02,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3865 conditions, 600 events. 326/600 cut-off events. For 17100/17100 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2606 event pairs, 83 based on Foata normal form. 2/602 useless extension candidates. Maximal degree in co-relation 3800. Up to 469 conditions per place. [2024-06-28 03:40:02,093 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 100 selfloop transitions, 24 changer transitions 0/144 dead transitions. [2024-06-28 03:40:02,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 144 transitions, 1657 flow [2024-06-28 03:40:02,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:02,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:02,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 03:40:02,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 03:40:02,094 INFO L175 Difference]: Start difference. First operand has 142 places, 126 transitions, 1345 flow. Second operand 9 states and 105 transitions. [2024-06-28 03:40:02,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 144 transitions, 1657 flow [2024-06-28 03:40:02,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 144 transitions, 1589 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:02,129 INFO L231 Difference]: Finished difference. Result has 145 places, 128 transitions, 1357 flow [2024-06-28 03:40:02,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1279, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1357, PETRI_PLACES=145, PETRI_TRANSITIONS=128} [2024-06-28 03:40:02,130 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 115 predicate places. [2024-06-28 03:40:02,130 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 128 transitions, 1357 flow [2024-06-28 03:40:02,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:02,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:02,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:02,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:40:02,131 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:02,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:02,131 INFO L85 PathProgramCache]: Analyzing trace with hash 639211032, now seen corresponding path program 3 times [2024-06-28 03:40:02,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:02,131 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623720042] [2024-06-28 03:40:02,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:02,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:02,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:03,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:03,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:03,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623720042] [2024-06-28 03:40:03,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623720042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:03,119 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:03,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:03,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355178097] [2024-06-28 03:40:03,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:03,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:03,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:03,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:03,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:03,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:03,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 128 transitions, 1357 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:03,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:03,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:03,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:03,444 INFO L124 PetriNetUnfolderBase]: 331/609 cut-off events. [2024-06-28 03:40:03,445 INFO L125 PetriNetUnfolderBase]: For 19670/19672 co-relation queries the response was YES. [2024-06-28 03:40:03,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3990 conditions, 609 events. 331/609 cut-off events. For 19670/19672 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2671 event pairs, 81 based on Foata normal form. 2/608 useless extension candidates. Maximal degree in co-relation 3924. Up to 482 conditions per place. [2024-06-28 03:40:03,450 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 97 selfloop transitions, 27 changer transitions 0/144 dead transitions. [2024-06-28 03:40:03,450 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 144 transitions, 1663 flow [2024-06-28 03:40:03,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:03,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:03,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 03:40:03,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 03:40:03,458 INFO L175 Difference]: Start difference. First operand has 145 places, 128 transitions, 1357 flow. Second operand 9 states and 105 transitions. [2024-06-28 03:40:03,458 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 144 transitions, 1663 flow [2024-06-28 03:40:03,484 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 144 transitions, 1593 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:03,488 INFO L231 Difference]: Finished difference. Result has 147 places, 129 transitions, 1366 flow [2024-06-28 03:40:03,488 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1287, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1366, PETRI_PLACES=147, PETRI_TRANSITIONS=129} [2024-06-28 03:40:03,489 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 117 predicate places. [2024-06-28 03:40:03,489 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 129 transitions, 1366 flow [2024-06-28 03:40:03,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:03,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:03,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:03,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:40:03,490 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:03,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:03,490 INFO L85 PathProgramCache]: Analyzing trace with hash -987576542, now seen corresponding path program 1 times [2024-06-28 03:40:03,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:03,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519699761] [2024-06-28 03:40:03,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:03,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:03,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:04,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:04,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:04,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519699761] [2024-06-28 03:40:04,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519699761] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:04,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:04,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:04,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979227553] [2024-06-28 03:40:04,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:04,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:04,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:04,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:04,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:04,292 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:04,293 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 129 transitions, 1366 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:04,293 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:04,293 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:04,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:04,523 INFO L124 PetriNetUnfolderBase]: 357/640 cut-off events. [2024-06-28 03:40:04,523 INFO L125 PetriNetUnfolderBase]: For 19374/19374 co-relation queries the response was YES. [2024-06-28 03:40:04,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4112 conditions, 640 events. 357/640 cut-off events. For 19374/19374 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 2745 event pairs, 65 based on Foata normal form. 2/642 useless extension candidates. Maximal degree in co-relation 4046. Up to 558 conditions per place. [2024-06-28 03:40:04,527 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 117 selfloop transitions, 28 changer transitions 0/147 dead transitions. [2024-06-28 03:40:04,528 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 147 transitions, 1726 flow [2024-06-28 03:40:04,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:04,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:04,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:40:04,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 03:40:04,531 INFO L175 Difference]: Start difference. First operand has 147 places, 129 transitions, 1366 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:40:04,531 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 147 transitions, 1726 flow [2024-06-28 03:40:04,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 147 transitions, 1661 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:04,569 INFO L231 Difference]: Finished difference. Result has 151 places, 131 transitions, 1390 flow [2024-06-28 03:40:04,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1301, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1390, PETRI_PLACES=151, PETRI_TRANSITIONS=131} [2024-06-28 03:40:04,570 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-06-28 03:40:04,570 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 131 transitions, 1390 flow [2024-06-28 03:40:04,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:04,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:04,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:04,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:40:04,570 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:04,571 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:04,571 INFO L85 PathProgramCache]: Analyzing trace with hash 638951686, now seen corresponding path program 1 times [2024-06-28 03:40:04,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:04,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005395615] [2024-06-28 03:40:04,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:04,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:04,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:05,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:05,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:05,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005395615] [2024-06-28 03:40:05,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005395615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:05,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:05,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:05,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605198715] [2024-06-28 03:40:05,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:05,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:05,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:05,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:05,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:05,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:05,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 131 transitions, 1390 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:05,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:05,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:05,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:05,854 INFO L124 PetriNetUnfolderBase]: 360/644 cut-off events. [2024-06-28 03:40:05,854 INFO L125 PetriNetUnfolderBase]: For 19896/19896 co-relation queries the response was YES. [2024-06-28 03:40:05,857 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4198 conditions, 644 events. 360/644 cut-off events. For 19896/19896 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2768 event pairs, 88 based on Foata normal form. 1/645 useless extension candidates. Maximal degree in co-relation 4131. Up to 565 conditions per place. [2024-06-28 03:40:05,859 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 116 selfloop transitions, 30 changer transitions 0/148 dead transitions. [2024-06-28 03:40:05,860 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 148 transitions, 1766 flow [2024-06-28 03:40:05,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:05,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:05,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:40:05,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 03:40:05,864 INFO L175 Difference]: Start difference. First operand has 151 places, 131 transitions, 1390 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:40:05,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 148 transitions, 1766 flow [2024-06-28 03:40:05,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 148 transitions, 1693 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:05,908 INFO L231 Difference]: Finished difference. Result has 152 places, 133 transitions, 1431 flow [2024-06-28 03:40:05,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1431, PETRI_PLACES=152, PETRI_TRANSITIONS=133} [2024-06-28 03:40:05,909 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 122 predicate places. [2024-06-28 03:40:05,909 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 133 transitions, 1431 flow [2024-06-28 03:40:05,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:05,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:05,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:05,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:40:05,910 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:05,910 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:05,910 INFO L85 PathProgramCache]: Analyzing trace with hash 787310720, now seen corresponding path program 2 times [2024-06-28 03:40:05,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:05,911 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124397888] [2024-06-28 03:40:05,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:05,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:05,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:06,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:06,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:06,632 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124397888] [2024-06-28 03:40:06,632 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124397888] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:06,632 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:06,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:06,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705968969] [2024-06-28 03:40:06,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:06,633 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:06,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:06,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:06,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:06,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:06,700 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 133 transitions, 1431 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:06,700 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:06,700 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:06,700 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:06,885 INFO L124 PetriNetUnfolderBase]: 366/654 cut-off events. [2024-06-28 03:40:06,885 INFO L125 PetriNetUnfolderBase]: For 21476/21476 co-relation queries the response was YES. [2024-06-28 03:40:06,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4282 conditions, 654 events. 366/654 cut-off events. For 21476/21476 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2823 event pairs, 68 based on Foata normal form. 2/656 useless extension candidates. Maximal degree in co-relation 4214. Up to 573 conditions per place. [2024-06-28 03:40:06,889 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 119 selfloop transitions, 31 changer transitions 0/152 dead transitions. [2024-06-28 03:40:06,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 152 transitions, 1807 flow [2024-06-28 03:40:06,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:06,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:06,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:40:06,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-28 03:40:06,891 INFO L175 Difference]: Start difference. First operand has 152 places, 133 transitions, 1431 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:40:06,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 152 transitions, 1807 flow [2024-06-28 03:40:06,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 152 transitions, 1733 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:06,934 INFO L231 Difference]: Finished difference. Result has 155 places, 135 transitions, 1456 flow [2024-06-28 03:40:06,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1357, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1456, PETRI_PLACES=155, PETRI_TRANSITIONS=135} [2024-06-28 03:40:06,935 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 125 predicate places. [2024-06-28 03:40:06,935 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 135 transitions, 1456 flow [2024-06-28 03:40:06,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:06,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:06,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:06,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:40:06,936 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:06,936 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:06,936 INFO L85 PathProgramCache]: Analyzing trace with hash -103263656, now seen corresponding path program 4 times [2024-06-28 03:40:06,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:06,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226240529] [2024-06-28 03:40:06,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:06,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:06,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:07,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:07,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:07,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226240529] [2024-06-28 03:40:07,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226240529] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:07,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:07,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:07,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116032561] [2024-06-28 03:40:07,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:07,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:07,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:07,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:07,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:07,885 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:07,885 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 135 transitions, 1456 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:07,886 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:07,886 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:07,886 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:08,151 INFO L124 PetriNetUnfolderBase]: 346/644 cut-off events. [2024-06-28 03:40:08,151 INFO L125 PetriNetUnfolderBase]: For 22972/22972 co-relation queries the response was YES. [2024-06-28 03:40:08,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4286 conditions, 644 events. 346/644 cut-off events. For 22972/22972 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2927 event pairs, 59 based on Foata normal form. 2/646 useless extension candidates. Maximal degree in co-relation 4217. Up to 511 conditions per place. [2024-06-28 03:40:08,155 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 108 selfloop transitions, 23 changer transitions 0/152 dead transitions. [2024-06-28 03:40:08,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 152 transitions, 1784 flow [2024-06-28 03:40:08,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:08,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:08,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 03:40:08,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-28 03:40:08,156 INFO L175 Difference]: Start difference. First operand has 155 places, 135 transitions, 1456 flow. Second operand 9 states and 106 transitions. [2024-06-28 03:40:08,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 152 transitions, 1784 flow [2024-06-28 03:40:08,185 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 152 transitions, 1701 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:08,188 INFO L231 Difference]: Finished difference. Result has 157 places, 137 transitions, 1455 flow [2024-06-28 03:40:08,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1373, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1455, PETRI_PLACES=157, PETRI_TRANSITIONS=137} [2024-06-28 03:40:08,188 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-06-28 03:40:08,189 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 137 transitions, 1455 flow [2024-06-28 03:40:08,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:08,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:08,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:08,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:40:08,189 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:08,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:08,190 INFO L85 PathProgramCache]: Analyzing trace with hash 620419134, now seen corresponding path program 2 times [2024-06-28 03:40:08,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:08,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597568477] [2024-06-28 03:40:08,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:08,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:08,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:09,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:09,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:09,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597568477] [2024-06-28 03:40:09,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597568477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:09,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:09,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:09,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331125721] [2024-06-28 03:40:09,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:09,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:09,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:09,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:09,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:09,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:09,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 137 transitions, 1455 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:09,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:09,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:09,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:09,347 INFO L124 PetriNetUnfolderBase]: 373/670 cut-off events. [2024-06-28 03:40:09,347 INFO L125 PetriNetUnfolderBase]: For 22775/22775 co-relation queries the response was YES. [2024-06-28 03:40:09,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4368 conditions, 670 events. 373/670 cut-off events. For 22775/22775 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 2943 event pairs, 63 based on Foata normal form. 1/671 useless extension candidates. Maximal degree in co-relation 4297. Up to 591 conditions per place. [2024-06-28 03:40:09,353 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 120 selfloop transitions, 29 changer transitions 0/151 dead transitions. [2024-06-28 03:40:09,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 151 transitions, 1793 flow [2024-06-28 03:40:09,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:09,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:09,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 03:40:09,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:40:09,354 INFO L175 Difference]: Start difference. First operand has 157 places, 137 transitions, 1455 flow. Second operand 9 states and 99 transitions. [2024-06-28 03:40:09,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 151 transitions, 1793 flow [2024-06-28 03:40:09,400 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 151 transitions, 1719 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:09,403 INFO L231 Difference]: Finished difference. Result has 160 places, 137 transitions, 1447 flow [2024-06-28 03:40:09,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1381, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1447, PETRI_PLACES=160, PETRI_TRANSITIONS=137} [2024-06-28 03:40:09,403 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-28 03:40:09,403 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 137 transitions, 1447 flow [2024-06-28 03:40:09,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:09,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:09,404 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:09,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:40:09,404 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:09,405 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:09,405 INFO L85 PathProgramCache]: Analyzing trace with hash 617737820, now seen corresponding path program 5 times [2024-06-28 03:40:09,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:09,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886788975] [2024-06-28 03:40:09,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:09,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:09,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:10,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:10,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:10,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886788975] [2024-06-28 03:40:10,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886788975] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:10,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:10,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:10,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156607085] [2024-06-28 03:40:10,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:10,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:10,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:10,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:10,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:10,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:10,303 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 137 transitions, 1447 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:10,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:10,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:10,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:10,573 INFO L124 PetriNetUnfolderBase]: 348/647 cut-off events. [2024-06-28 03:40:10,574 INFO L125 PetriNetUnfolderBase]: For 24866/24868 co-relation queries the response was YES. [2024-06-28 03:40:10,576 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4276 conditions, 647 events. 348/647 cut-off events. For 24866/24868 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 2974 event pairs, 59 based on Foata normal form. 2/647 useless extension candidates. Maximal degree in co-relation 4204. Up to 518 conditions per place. [2024-06-28 03:40:10,578 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 105 selfloop transitions, 26 changer transitions 0/152 dead transitions. [2024-06-28 03:40:10,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 152 transitions, 1769 flow [2024-06-28 03:40:10,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:10,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:10,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 03:40:10,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-28 03:40:10,579 INFO L175 Difference]: Start difference. First operand has 160 places, 137 transitions, 1447 flow. Second operand 9 states and 106 transitions. [2024-06-28 03:40:10,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 152 transitions, 1769 flow [2024-06-28 03:40:10,611 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 152 transitions, 1667 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:10,613 INFO L231 Difference]: Finished difference. Result has 160 places, 138 transitions, 1426 flow [2024-06-28 03:40:10,613 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1345, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1426, PETRI_PLACES=160, PETRI_TRANSITIONS=138} [2024-06-28 03:40:10,614 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-28 03:40:10,614 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 138 transitions, 1426 flow [2024-06-28 03:40:10,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:10,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:10,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:10,615 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:40:10,615 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:10,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:10,616 INFO L85 PathProgramCache]: Analyzing trace with hash 735825500, now seen corresponding path program 6 times [2024-06-28 03:40:10,616 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:10,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507347574] [2024-06-28 03:40:10,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:10,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:10,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:11,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:11,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:11,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507347574] [2024-06-28 03:40:11,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507347574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:11,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:11,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:11,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156587107] [2024-06-28 03:40:11,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:11,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:11,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:11,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:11,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:11,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:11,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 138 transitions, 1426 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:11,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:11,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:11,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:11,969 INFO L124 PetriNetUnfolderBase]: 352/658 cut-off events. [2024-06-28 03:40:11,969 INFO L125 PetriNetUnfolderBase]: For 26363/26363 co-relation queries the response was YES. [2024-06-28 03:40:11,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4355 conditions, 658 events. 352/658 cut-off events. For 26363/26363 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3019 event pairs, 61 based on Foata normal form. 2/660 useless extension candidates. Maximal degree in co-relation 4282. Up to 510 conditions per place. [2024-06-28 03:40:11,973 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 99 selfloop transitions, 33 changer transitions 0/153 dead transitions. [2024-06-28 03:40:11,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 153 transitions, 1752 flow [2024-06-28 03:40:11,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:11,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:11,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 03:40:11,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37992831541218636 [2024-06-28 03:40:11,975 INFO L175 Difference]: Start difference. First operand has 160 places, 138 transitions, 1426 flow. Second operand 9 states and 106 transitions. [2024-06-28 03:40:11,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 153 transitions, 1752 flow [2024-06-28 03:40:12,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 153 transitions, 1683 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:12,022 INFO L231 Difference]: Finished difference. Result has 162 places, 139 transitions, 1453 flow [2024-06-28 03:40:12,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1357, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1453, PETRI_PLACES=162, PETRI_TRANSITIONS=139} [2024-06-28 03:40:12,022 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 132 predicate places. [2024-06-28 03:40:12,023 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 139 transitions, 1453 flow [2024-06-28 03:40:12,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:12,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:12,023 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:12,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:40:12,023 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:12,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:12,024 INFO L85 PathProgramCache]: Analyzing trace with hash -983107892, now seen corresponding path program 3 times [2024-06-28 03:40:12,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:12,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912607068] [2024-06-28 03:40:12,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:12,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:12,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:12,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:12,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912607068] [2024-06-28 03:40:12,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912607068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:12,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:12,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:12,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965917128] [2024-06-28 03:40:12,761 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:12,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:12,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:12,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:12,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:12,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:12,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 139 transitions, 1453 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:12,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:12,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:12,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:13,046 INFO L124 PetriNetUnfolderBase]: 402/720 cut-off events. [2024-06-28 03:40:13,046 INFO L125 PetriNetUnfolderBase]: For 29614/29614 co-relation queries the response was YES. [2024-06-28 03:40:13,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4840 conditions, 720 events. 402/720 cut-off events. For 29614/29614 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3210 event pairs, 74 based on Foata normal form. 2/722 useless extension candidates. Maximal degree in co-relation 4766. Up to 549 conditions per place. [2024-06-28 03:40:13,051 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 114 selfloop transitions, 47 changer transitions 0/163 dead transitions. [2024-06-28 03:40:13,051 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 163 transitions, 2077 flow [2024-06-28 03:40:13,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:13,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:13,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 03:40:13,052 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 03:40:13,052 INFO L175 Difference]: Start difference. First operand has 162 places, 139 transitions, 1453 flow. Second operand 10 states and 114 transitions. [2024-06-28 03:40:13,052 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 171 places, 163 transitions, 2077 flow [2024-06-28 03:40:13,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 163 transitions, 1972 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:13,091 INFO L231 Difference]: Finished difference. Result has 164 places, 145 transitions, 1547 flow [2024-06-28 03:40:13,091 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1348, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1547, PETRI_PLACES=164, PETRI_TRANSITIONS=145} [2024-06-28 03:40:13,091 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 134 predicate places. [2024-06-28 03:40:13,091 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 145 transitions, 1547 flow [2024-06-28 03:40:13,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:13,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:13,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:13,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:40:13,092 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:13,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:13,093 INFO L85 PathProgramCache]: Analyzing trace with hash -982934912, now seen corresponding path program 4 times [2024-06-28 03:40:13,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:13,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433210352] [2024-06-28 03:40:13,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:13,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:13,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:13,900 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:13,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:13,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433210352] [2024-06-28 03:40:13,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433210352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:13,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:13,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:13,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772398142] [2024-06-28 03:40:13,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:13,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:13,901 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:13,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:13,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:13,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:13,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 145 transitions, 1547 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:13,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:13,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:13,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:14,245 INFO L124 PetriNetUnfolderBase]: 408/730 cut-off events. [2024-06-28 03:40:14,245 INFO L125 PetriNetUnfolderBase]: For 31043/31043 co-relation queries the response was YES. [2024-06-28 03:40:14,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4955 conditions, 730 events. 408/730 cut-off events. For 31043/31043 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3274 event pairs, 64 based on Foata normal form. 2/732 useless extension candidates. Maximal degree in co-relation 4880. Up to 555 conditions per place. [2024-06-28 03:40:14,250 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 110 selfloop transitions, 53 changer transitions 0/165 dead transitions. [2024-06-28 03:40:14,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 165 transitions, 2119 flow [2024-06-28 03:40:14,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:14,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:14,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 03:40:14,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 03:40:14,251 INFO L175 Difference]: Start difference. First operand has 164 places, 145 transitions, 1547 flow. Second operand 10 states and 113 transitions. [2024-06-28 03:40:14,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 165 transitions, 2119 flow [2024-06-28 03:40:14,295 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 165 transitions, 2058 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-28 03:40:14,297 INFO L231 Difference]: Finished difference. Result has 169 places, 147 transitions, 1633 flow [2024-06-28 03:40:14,298 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1488, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1633, PETRI_PLACES=169, PETRI_TRANSITIONS=147} [2024-06-28 03:40:14,298 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 139 predicate places. [2024-06-28 03:40:14,298 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 147 transitions, 1633 flow [2024-06-28 03:40:14,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:14,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:14,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:14,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:40:14,299 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:14,299 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:14,300 INFO L85 PathProgramCache]: Analyzing trace with hash -982928402, now seen corresponding path program 5 times [2024-06-28 03:40:14,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:14,300 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371786791] [2024-06-28 03:40:14,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:14,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:14,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:15,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:15,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:15,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371786791] [2024-06-28 03:40:15,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371786791] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:15,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:15,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:15,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372885131] [2024-06-28 03:40:15,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:15,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:15,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:15,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:15,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:15,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:15,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 147 transitions, 1633 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:15,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:15,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:15,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:15,304 INFO L124 PetriNetUnfolderBase]: 404/724 cut-off events. [2024-06-28 03:40:15,304 INFO L125 PetriNetUnfolderBase]: For 30862/30862 co-relation queries the response was YES. [2024-06-28 03:40:15,307 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4948 conditions, 724 events. 404/724 cut-off events. For 30862/30862 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3252 event pairs, 63 based on Foata normal form. 2/726 useless extension candidates. Maximal degree in co-relation 4871. Up to 552 conditions per place. [2024-06-28 03:40:15,308 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 104 selfloop transitions, 58 changer transitions 0/164 dead transitions. [2024-06-28 03:40:15,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 164 transitions, 2087 flow [2024-06-28 03:40:15,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:15,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:15,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 03:40:15,310 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 03:40:15,310 INFO L175 Difference]: Start difference. First operand has 169 places, 147 transitions, 1633 flow. Second operand 10 states and 111 transitions. [2024-06-28 03:40:15,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 164 transitions, 2087 flow [2024-06-28 03:40:15,358 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 164 transitions, 1950 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:15,360 INFO L231 Difference]: Finished difference. Result has 172 places, 147 transitions, 1617 flow [2024-06-28 03:40:15,360 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1496, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1617, PETRI_PLACES=172, PETRI_TRANSITIONS=147} [2024-06-28 03:40:15,360 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 142 predicate places. [2024-06-28 03:40:15,360 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 147 transitions, 1617 flow [2024-06-28 03:40:15,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:15,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:15,361 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:15,361 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:40:15,361 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:15,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:15,361 INFO L85 PathProgramCache]: Analyzing trace with hash -982928154, now seen corresponding path program 1 times [2024-06-28 03:40:15,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:15,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290364660] [2024-06-28 03:40:15,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:15,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:15,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:16,205 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:16,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:16,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290364660] [2024-06-28 03:40:16,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290364660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:16,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:16,206 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:16,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549573306] [2024-06-28 03:40:16,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:16,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:16,206 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:16,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:16,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:16,306 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:16,307 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 147 transitions, 1617 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:16,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:16,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:16,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:16,486 INFO L124 PetriNetUnfolderBase]: 407/729 cut-off events. [2024-06-28 03:40:16,486 INFO L125 PetriNetUnfolderBase]: For 30915/30915 co-relation queries the response was YES. [2024-06-28 03:40:16,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4984 conditions, 729 events. 407/729 cut-off events. For 30915/30915 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3280 event pairs, 110 based on Foata normal form. 1/730 useless extension candidates. Maximal degree in co-relation 4906. Up to 693 conditions per place. [2024-06-28 03:40:16,491 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 140 selfloop transitions, 19 changer transitions 0/161 dead transitions. [2024-06-28 03:40:16,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 161 transitions, 1985 flow [2024-06-28 03:40:16,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:16,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:16,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-28 03:40:16,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3193548387096774 [2024-06-28 03:40:16,492 INFO L175 Difference]: Start difference. First operand has 172 places, 147 transitions, 1617 flow. Second operand 10 states and 99 transitions. [2024-06-28 03:40:16,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 161 transitions, 1985 flow [2024-06-28 03:40:16,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 161 transitions, 1881 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:16,548 INFO L231 Difference]: Finished difference. Result has 174 places, 149 transitions, 1580 flow [2024-06-28 03:40:16,548 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1513, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1580, PETRI_PLACES=174, PETRI_TRANSITIONS=149} [2024-06-28 03:40:16,548 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-28 03:40:16,548 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 149 transitions, 1580 flow [2024-06-28 03:40:16,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:16,549 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:16,549 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:16,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:40:16,549 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:16,549 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:16,550 INFO L85 PathProgramCache]: Analyzing trace with hash -2064467366, now seen corresponding path program 7 times [2024-06-28 03:40:16,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:16,550 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287211145] [2024-06-28 03:40:16,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:16,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:16,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:17,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:17,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:17,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287211145] [2024-06-28 03:40:17,262 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287211145] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:17,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:17,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:17,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [698531614] [2024-06-28 03:40:17,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:17,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:17,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:17,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:17,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:17,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:17,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 149 transitions, 1580 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:17,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:17,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:17,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:17,679 INFO L124 PetriNetUnfolderBase]: 377/701 cut-off events. [2024-06-28 03:40:17,680 INFO L125 PetriNetUnfolderBase]: For 35236/35240 co-relation queries the response was YES. [2024-06-28 03:40:17,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4945 conditions, 701 events. 377/701 cut-off events. For 35236/35240 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3321 event pairs, 59 based on Foata normal form. 2/699 useless extension candidates. Maximal degree in co-relation 4866. Up to 512 conditions per place. [2024-06-28 03:40:17,685 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 114 selfloop transitions, 28 changer transitions 0/163 dead transitions. [2024-06-28 03:40:17,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 163 transitions, 1922 flow [2024-06-28 03:40:17,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:17,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:17,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-28 03:40:17,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:40:17,686 INFO L175 Difference]: Start difference. First operand has 174 places, 149 transitions, 1580 flow. Second operand 8 states and 92 transitions. [2024-06-28 03:40:17,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 163 transitions, 1922 flow [2024-06-28 03:40:17,738 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 163 transitions, 1871 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:17,740 INFO L231 Difference]: Finished difference. Result has 174 places, 150 transitions, 1623 flow [2024-06-28 03:40:17,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1529, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1623, PETRI_PLACES=174, PETRI_TRANSITIONS=150} [2024-06-28 03:40:17,740 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-28 03:40:17,740 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 150 transitions, 1623 flow [2024-06-28 03:40:17,740 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:17,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:17,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:17,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:40:17,741 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:17,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:17,741 INFO L85 PathProgramCache]: Analyzing trace with hash -381931536, now seen corresponding path program 3 times [2024-06-28 03:40:17,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:17,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640356880] [2024-06-28 03:40:17,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:17,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:17,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:18,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:18,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640356880] [2024-06-28 03:40:18,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640356880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:18,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:18,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:18,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750382417] [2024-06-28 03:40:18,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:18,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:18,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:18,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:18,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:18,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:18,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 150 transitions, 1623 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:18,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:18,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:18,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:18,816 INFO L124 PetriNetUnfolderBase]: 409/734 cut-off events. [2024-06-28 03:40:18,816 INFO L125 PetriNetUnfolderBase]: For 32853/32853 co-relation queries the response was YES. [2024-06-28 03:40:18,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5037 conditions, 734 events. 409/734 cut-off events. For 32853/32853 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3319 event pairs, 86 based on Foata normal form. 1/735 useless extension candidates. Maximal degree in co-relation 4957. Up to 615 conditions per place. [2024-06-28 03:40:18,821 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 117 selfloop transitions, 44 changer transitions 0/163 dead transitions. [2024-06-28 03:40:18,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 163 transitions, 1981 flow [2024-06-28 03:40:18,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:18,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:18,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 03:40:18,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:40:18,822 INFO L175 Difference]: Start difference. First operand has 174 places, 150 transitions, 1623 flow. Second operand 8 states and 88 transitions. [2024-06-28 03:40:18,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 163 transitions, 1981 flow [2024-06-28 03:40:18,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 163 transitions, 1895 flow, removed 19 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:18,877 INFO L231 Difference]: Finished difference. Result has 176 places, 150 transitions, 1645 flow [2024-06-28 03:40:18,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1537, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1645, PETRI_PLACES=176, PETRI_TRANSITIONS=150} [2024-06-28 03:40:18,878 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 146 predicate places. [2024-06-28 03:40:18,878 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 150 transitions, 1645 flow [2024-06-28 03:40:18,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:18,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:18,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:18,878 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:40:18,878 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:18,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:18,879 INFO L85 PathProgramCache]: Analyzing trace with hash 1496088834, now seen corresponding path program 8 times [2024-06-28 03:40:18,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:18,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996695340] [2024-06-28 03:40:18,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:18,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:18,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:19,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:19,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:19,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996695340] [2024-06-28 03:40:19,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996695340] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:19,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:19,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:19,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708909364] [2024-06-28 03:40:19,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:19,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:19,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:19,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:19,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:19,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:19,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 150 transitions, 1645 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:19,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:19,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:19,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:20,169 INFO L124 PetriNetUnfolderBase]: 379/704 cut-off events. [2024-06-28 03:40:20,170 INFO L125 PetriNetUnfolderBase]: For 32467/32470 co-relation queries the response was YES. [2024-06-28 03:40:20,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4911 conditions, 704 events. 379/704 cut-off events. For 32467/32470 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3307 event pairs, 77 based on Foata normal form. 2/699 useless extension candidates. Maximal degree in co-relation 4830. Up to 543 conditions per place. [2024-06-28 03:40:20,175 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 108 selfloop transitions, 35 changer transitions 0/164 dead transitions. [2024-06-28 03:40:20,175 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 164 transitions, 1987 flow [2024-06-28 03:40:20,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:20,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 03:40:20,176 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 03:40:20,176 INFO L175 Difference]: Start difference. First operand has 176 places, 150 transitions, 1645 flow. Second operand 8 states and 94 transitions. [2024-06-28 03:40:20,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 164 transitions, 1987 flow [2024-06-28 03:40:20,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 164 transitions, 1835 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:40:20,219 INFO L231 Difference]: Finished difference. Result has 174 places, 151 transitions, 1598 flow [2024-06-28 03:40:20,219 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1493, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1598, PETRI_PLACES=174, PETRI_TRANSITIONS=151} [2024-06-28 03:40:20,219 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 144 predicate places. [2024-06-28 03:40:20,219 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 151 transitions, 1598 flow [2024-06-28 03:40:20,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:20,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:20,219 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:20,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:40:20,220 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:20,220 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:20,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1970008549, now seen corresponding path program 1 times [2024-06-28 03:40:20,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:20,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281362540] [2024-06-28 03:40:20,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:20,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:20,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:21,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:21,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:21,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281362540] [2024-06-28 03:40:21,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281362540] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:21,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:21,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:21,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089625521] [2024-06-28 03:40:21,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:21,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:21,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:21,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:21,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:21,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:21,180 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 151 transitions, 1598 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:21,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:21,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:21,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:21,456 INFO L124 PetriNetUnfolderBase]: 416/747 cut-off events. [2024-06-28 03:40:21,456 INFO L125 PetriNetUnfolderBase]: For 28809/28809 co-relation queries the response was YES. [2024-06-28 03:40:21,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4998 conditions, 747 events. 416/747 cut-off events. For 28809/28809 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3388 event pairs, 68 based on Foata normal form. 1/748 useless extension candidates. Maximal degree in co-relation 4918. Up to 657 conditions per place. [2024-06-28 03:40:21,461 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 134 selfloop transitions, 33 changer transitions 0/169 dead transitions. [2024-06-28 03:40:21,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 169 transitions, 2014 flow [2024-06-28 03:40:21,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:21,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:21,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 03:40:21,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 03:40:21,462 INFO L175 Difference]: Start difference. First operand has 174 places, 151 transitions, 1598 flow. Second operand 10 states and 108 transitions. [2024-06-28 03:40:21,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 169 transitions, 2014 flow [2024-06-28 03:40:21,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 177 places, 169 transitions, 1929 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:21,514 INFO L231 Difference]: Finished difference. Result has 178 places, 153 transitions, 1627 flow [2024-06-28 03:40:21,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1513, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1627, PETRI_PLACES=178, PETRI_TRANSITIONS=153} [2024-06-28 03:40:21,514 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 148 predicate places. [2024-06-28 03:40:21,514 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 153 transitions, 1627 flow [2024-06-28 03:40:21,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:21,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:21,515 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:21,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:40:21,515 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:21,515 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:21,515 INFO L85 PathProgramCache]: Analyzing trace with hash -353730988, now seen corresponding path program 6 times [2024-06-28 03:40:21,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:21,515 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013797817] [2024-06-28 03:40:21,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:21,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:21,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:22,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:22,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:22,128 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013797817] [2024-06-28 03:40:22,128 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013797817] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:22,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:22,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:22,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133586608] [2024-06-28 03:40:22,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:22,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:22,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:22,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:22,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:22,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:22,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 153 transitions, 1627 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:22,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:22,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:22,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:22,464 INFO L124 PetriNetUnfolderBase]: 422/757 cut-off events. [2024-06-28 03:40:22,465 INFO L125 PetriNetUnfolderBase]: For 28202/28202 co-relation queries the response was YES. [2024-06-28 03:40:22,468 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5002 conditions, 757 events. 422/757 cut-off events. For 28202/28202 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3445 event pairs, 67 based on Foata normal form. 2/759 useless extension candidates. Maximal degree in co-relation 4921. Up to 632 conditions per place. [2024-06-28 03:40:22,469 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 126 selfloop transitions, 42 changer transitions 0/170 dead transitions. [2024-06-28 03:40:22,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 170 transitions, 2041 flow [2024-06-28 03:40:22,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:22,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:22,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:40:22,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 03:40:22,471 INFO L175 Difference]: Start difference. First operand has 178 places, 153 transitions, 1627 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:40:22,471 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 170 transitions, 2041 flow [2024-06-28 03:40:22,523 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 170 transitions, 1961 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:22,525 INFO L231 Difference]: Finished difference. Result has 179 places, 155 transitions, 1682 flow [2024-06-28 03:40:22,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1547, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1682, PETRI_PLACES=179, PETRI_TRANSITIONS=155} [2024-06-28 03:40:22,526 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 149 predicate places. [2024-06-28 03:40:22,526 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 155 transitions, 1682 flow [2024-06-28 03:40:22,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:22,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:22,526 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:22,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:40:22,526 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:22,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:22,527 INFO L85 PathProgramCache]: Analyzing trace with hash -263843980, now seen corresponding path program 9 times [2024-06-28 03:40:22,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:22,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520878063] [2024-06-28 03:40:22,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:22,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:22,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:23,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:23,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:23,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520878063] [2024-06-28 03:40:23,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520878063] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:23,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:23,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:23,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521453325] [2024-06-28 03:40:23,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:23,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:23,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:23,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:23,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:23,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:23,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 155 transitions, 1682 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:23,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:23,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:23,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:23,721 INFO L124 PetriNetUnfolderBase]: 383/721 cut-off events. [2024-06-28 03:40:23,721 INFO L125 PetriNetUnfolderBase]: For 30203/30205 co-relation queries the response was YES. [2024-06-28 03:40:23,724 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4971 conditions, 721 events. 383/721 cut-off events. For 30203/30205 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3464 event pairs, 56 based on Foata normal form. 2/721 useless extension candidates. Maximal degree in co-relation 4889. Up to 552 conditions per place. [2024-06-28 03:40:23,726 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 108 selfloop transitions, 39 changer transitions 0/168 dead transitions. [2024-06-28 03:40:23,726 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 168 transitions, 2028 flow [2024-06-28 03:40:23,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:23,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:23,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-28 03:40:23,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3790322580645161 [2024-06-28 03:40:23,731 INFO L175 Difference]: Start difference. First operand has 179 places, 155 transitions, 1682 flow. Second operand 8 states and 94 transitions. [2024-06-28 03:40:23,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 168 transitions, 2028 flow [2024-06-28 03:40:23,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 168 transitions, 1933 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:23,789 INFO L231 Difference]: Finished difference. Result has 180 places, 156 transitions, 1693 flow [2024-06-28 03:40:23,789 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1587, PETRI_DIFFERENCE_MINUEND_PLACES=172, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1693, PETRI_PLACES=180, PETRI_TRANSITIONS=156} [2024-06-28 03:40:23,789 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 150 predicate places. [2024-06-28 03:40:23,789 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 156 transitions, 1693 flow [2024-06-28 03:40:23,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:23,790 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:23,790 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:23,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:40:23,790 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:23,790 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:23,791 INFO L85 PathProgramCache]: Analyzing trace with hash 1611500284, now seen corresponding path program 7 times [2024-06-28 03:40:23,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:23,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140440283] [2024-06-28 03:40:23,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:23,791 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:23,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:24,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:24,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:24,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140440283] [2024-06-28 03:40:24,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140440283] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:24,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:24,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:24,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271234524] [2024-06-28 03:40:24,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:24,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:24,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:24,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:24,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:24,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:24,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 156 transitions, 1693 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:24,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:24,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:24,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:24,826 INFO L124 PetriNetUnfolderBase]: 447/799 cut-off events. [2024-06-28 03:40:24,826 INFO L125 PetriNetUnfolderBase]: For 34224/34224 co-relation queries the response was YES. [2024-06-28 03:40:24,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5546 conditions, 799 events. 447/799 cut-off events. For 34224/34224 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 3693 event pairs, 83 based on Foata normal form. 2/801 useless extension candidates. Maximal degree in co-relation 5463. Up to 658 conditions per place. [2024-06-28 03:40:24,833 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 134 selfloop transitions, 41 changer transitions 0/177 dead transitions. [2024-06-28 03:40:24,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 177 transitions, 2373 flow [2024-06-28 03:40:24,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:24,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:24,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 03:40:24,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 03:40:24,836 INFO L175 Difference]: Start difference. First operand has 180 places, 156 transitions, 1693 flow. Second operand 10 states and 113 transitions. [2024-06-28 03:40:24,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 177 transitions, 2373 flow [2024-06-28 03:40:24,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 177 transitions, 2275 flow, removed 12 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:24,900 INFO L231 Difference]: Finished difference. Result has 184 places, 162 transitions, 1810 flow [2024-06-28 03:40:24,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1599, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1810, PETRI_PLACES=184, PETRI_TRANSITIONS=162} [2024-06-28 03:40:24,901 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 154 predicate places. [2024-06-28 03:40:24,901 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 162 transitions, 1810 flow [2024-06-28 03:40:24,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:24,901 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:24,901 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:24,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:40:24,902 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:24,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:24,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1611679774, now seen corresponding path program 8 times [2024-06-28 03:40:24,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:24,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [895788818] [2024-06-28 03:40:24,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:24,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:24,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:25,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:25,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:25,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [895788818] [2024-06-28 03:40:25,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [895788818] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:25,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:25,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:25,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006537321] [2024-06-28 03:40:25,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:25,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:25,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:25,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:25,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:25,691 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:25,691 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 162 transitions, 1810 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:25,691 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:25,691 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:25,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:25,946 INFO L124 PetriNetUnfolderBase]: 453/809 cut-off events. [2024-06-28 03:40:25,947 INFO L125 PetriNetUnfolderBase]: For 34517/34517 co-relation queries the response was YES. [2024-06-28 03:40:25,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5623 conditions, 809 events. 453/809 cut-off events. For 34517/34517 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3750 event pairs, 78 based on Foata normal form. 2/811 useless extension candidates. Maximal degree in co-relation 5539. Up to 664 conditions per place. [2024-06-28 03:40:25,954 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 128 selfloop transitions, 48 changer transitions 0/178 dead transitions. [2024-06-28 03:40:25,954 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 178 transitions, 2330 flow [2024-06-28 03:40:25,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:25,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:25,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:40:25,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:40:25,955 INFO L175 Difference]: Start difference. First operand has 184 places, 162 transitions, 1810 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:40:25,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 178 transitions, 2330 flow [2024-06-28 03:40:26,021 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 178 transitions, 2221 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:26,023 INFO L231 Difference]: Finished difference. Result has 187 places, 164 transitions, 1846 flow [2024-06-28 03:40:26,023 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1707, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1846, PETRI_PLACES=187, PETRI_TRANSITIONS=164} [2024-06-28 03:40:26,023 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2024-06-28 03:40:26,023 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 164 transitions, 1846 flow [2024-06-28 03:40:26,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:26,024 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:26,024 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:26,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:40:26,024 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:26,024 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:26,024 INFO L85 PathProgramCache]: Analyzing trace with hash -263666040, now seen corresponding path program 9 times [2024-06-28 03:40:26,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:26,024 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212756983] [2024-06-28 03:40:26,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:26,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:26,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:26,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:26,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:26,700 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212756983] [2024-06-28 03:40:26,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212756983] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:26,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:26,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:26,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856826591] [2024-06-28 03:40:26,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:26,700 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:26,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:26,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:26,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:26,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:26,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 164 transitions, 1846 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:26,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:26,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:26,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:26,998 INFO L124 PetriNetUnfolderBase]: 449/803 cut-off events. [2024-06-28 03:40:26,998 INFO L125 PetriNetUnfolderBase]: For 33842/33842 co-relation queries the response was YES. [2024-06-28 03:40:27,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5522 conditions, 803 events. 449/803 cut-off events. For 33842/33842 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3723 event pairs, 60 based on Foata normal form. 2/805 useless extension candidates. Maximal degree in co-relation 5438. Up to 547 conditions per place. [2024-06-28 03:40:27,004 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 100 selfloop transitions, 77 changer transitions 0/179 dead transitions. [2024-06-28 03:40:27,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 179 transitions, 2328 flow [2024-06-28 03:40:27,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:27,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:27,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 03:40:27,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-28 03:40:27,013 INFO L175 Difference]: Start difference. First operand has 187 places, 164 transitions, 1846 flow. Second operand 9 states and 101 transitions. [2024-06-28 03:40:27,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 179 transitions, 2328 flow [2024-06-28 03:40:27,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 179 transitions, 2133 flow, removed 44 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:27,086 INFO L231 Difference]: Finished difference. Result has 187 places, 164 transitions, 1813 flow [2024-06-28 03:40:27,087 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1651, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1813, PETRI_PLACES=187, PETRI_TRANSITIONS=164} [2024-06-28 03:40:27,087 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 157 predicate places. [2024-06-28 03:40:27,087 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 164 transitions, 1813 flow [2024-06-28 03:40:27,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:27,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:27,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:27,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:40:27,087 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:27,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:27,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1611680022, now seen corresponding path program 2 times [2024-06-28 03:40:27,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:27,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922650491] [2024-06-28 03:40:27,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:27,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:27,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:27,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:27,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:27,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922650491] [2024-06-28 03:40:27,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922650491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:27,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:27,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:27,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864986219] [2024-06-28 03:40:27,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:27,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:27,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:27,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:27,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:27,860 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:27,860 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 164 transitions, 1813 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:27,860 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:27,860 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:27,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:28,085 INFO L124 PetriNetUnfolderBase]: 452/808 cut-off events. [2024-06-28 03:40:28,085 INFO L125 PetriNetUnfolderBase]: For 34355/34355 co-relation queries the response was YES. [2024-06-28 03:40:28,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5494 conditions, 808 events. 452/808 cut-off events. For 34355/34355 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3762 event pairs, 118 based on Foata normal form. 1/809 useless extension candidates. Maximal degree in co-relation 5413. Up to 760 conditions per place. [2024-06-28 03:40:28,091 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 148 selfloop transitions, 26 changer transitions 0/176 dead transitions. [2024-06-28 03:40:28,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 176 transitions, 2209 flow [2024-06-28 03:40:28,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:28,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:28,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-28 03:40:28,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 03:40:28,092 INFO L175 Difference]: Start difference. First operand has 187 places, 164 transitions, 1813 flow. Second operand 9 states and 90 transitions. [2024-06-28 03:40:28,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 176 transitions, 2209 flow [2024-06-28 03:40:28,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 176 transitions, 2096 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:28,151 INFO L231 Difference]: Finished difference. Result has 189 places, 166 transitions, 1788 flow [2024-06-28 03:40:28,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1700, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1788, PETRI_PLACES=189, PETRI_TRANSITIONS=166} [2024-06-28 03:40:28,152 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 159 predicate places. [2024-06-28 03:40:28,152 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 166 transitions, 1788 flow [2024-06-28 03:40:28,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:28,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:28,152 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:28,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:40:28,153 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:28,153 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:28,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1838967160, now seen corresponding path program 10 times [2024-06-28 03:40:28,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:28,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500933940] [2024-06-28 03:40:28,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:28,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:28,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:28,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:28,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:28,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500933940] [2024-06-28 03:40:28,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500933940] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:28,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:28,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:28,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287588419] [2024-06-28 03:40:28,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:28,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:28,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:28,874 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:28,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:28,958 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:28,958 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 166 transitions, 1788 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:28,958 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:28,958 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:28,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:29,172 INFO L124 PetriNetUnfolderBase]: 478/850 cut-off events. [2024-06-28 03:40:29,172 INFO L125 PetriNetUnfolderBase]: For 39490/39490 co-relation queries the response was YES. [2024-06-28 03:40:29,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5906 conditions, 850 events. 478/850 cut-off events. For 39490/39490 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 3992 event pairs, 92 based on Foata normal form. 2/852 useless extension candidates. Maximal degree in co-relation 5825. Up to 498 conditions per place. [2024-06-28 03:40:29,178 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 106 selfloop transitions, 83 changer transitions 0/191 dead transitions. [2024-06-28 03:40:29,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 191 transitions, 2740 flow [2024-06-28 03:40:29,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:29,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:29,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-06-28 03:40:29,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3906810035842294 [2024-06-28 03:40:29,179 INFO L175 Difference]: Start difference. First operand has 189 places, 166 transitions, 1788 flow. Second operand 9 states and 109 transitions. [2024-06-28 03:40:29,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 191 transitions, 2740 flow [2024-06-28 03:40:29,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 191 transitions, 2664 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:29,238 INFO L231 Difference]: Finished difference. Result has 191 places, 174 transitions, 2071 flow [2024-06-28 03:40:29,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1720, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2071, PETRI_PLACES=191, PETRI_TRANSITIONS=174} [2024-06-28 03:40:29,238 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 161 predicate places. [2024-06-28 03:40:29,238 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 174 transitions, 2071 flow [2024-06-28 03:40:29,238 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:29,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:29,239 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:29,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:40:29,239 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:29,239 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:29,239 INFO L85 PathProgramCache]: Analyzing trace with hash 29837796, now seen corresponding path program 3 times [2024-06-28 03:40:29,239 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:29,240 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688289345] [2024-06-28 03:40:29,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:29,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:29,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:29,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:29,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:29,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688289345] [2024-06-28 03:40:29,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688289345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:29,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:29,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:29,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128095864] [2024-06-28 03:40:29,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:29,970 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:29,970 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:29,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:29,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:30,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:30,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 174 transitions, 2071 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:30,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:30,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:30,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:30,200 INFO L124 PetriNetUnfolderBase]: 481/855 cut-off events. [2024-06-28 03:40:30,200 INFO L125 PetriNetUnfolderBase]: For 39514/39514 co-relation queries the response was YES. [2024-06-28 03:40:30,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6079 conditions, 855 events. 481/855 cut-off events. For 39514/39514 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4035 event pairs, 127 based on Foata normal form. 1/856 useless extension candidates. Maximal degree in co-relation 5997. Up to 766 conditions per place. [2024-06-28 03:40:30,207 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 149 selfloop transitions, 36 changer transitions 0/187 dead transitions. [2024-06-28 03:40:30,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 187 transitions, 2597 flow [2024-06-28 03:40:30,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:30,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:30,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:40:30,208 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 03:40:30,208 INFO L175 Difference]: Start difference. First operand has 191 places, 174 transitions, 2071 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:40:30,208 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 187 transitions, 2597 flow [2024-06-28 03:40:30,272 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 187 transitions, 2380 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-28 03:40:30,275 INFO L231 Difference]: Finished difference. Result has 195 places, 178 transitions, 1983 flow [2024-06-28 03:40:30,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1854, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1983, PETRI_PLACES=195, PETRI_TRANSITIONS=178} [2024-06-28 03:40:30,276 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 165 predicate places. [2024-06-28 03:40:30,276 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 178 transitions, 1983 flow [2024-06-28 03:40:30,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:30,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:30,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:30,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:40:30,277 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:30,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:30,277 INFO L85 PathProgramCache]: Analyzing trace with hash -176307962, now seen corresponding path program 11 times [2024-06-28 03:40:30,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:30,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295328985] [2024-06-28 03:40:30,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:30,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:31,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:31,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:31,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295328985] [2024-06-28 03:40:31,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295328985] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:31,000 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:31,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:31,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834400588] [2024-06-28 03:40:31,000 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:31,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:31,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:31,001 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:31,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:31,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:31,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 178 transitions, 1983 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:31,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:31,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:31,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:31,293 INFO L124 PetriNetUnfolderBase]: 477/849 cut-off events. [2024-06-28 03:40:31,293 INFO L125 PetriNetUnfolderBase]: For 38815/38815 co-relation queries the response was YES. [2024-06-28 03:40:31,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5759 conditions, 849 events. 477/849 cut-off events. For 38815/38815 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4010 event pairs, 91 based on Foata normal form. 2/851 useless extension candidates. Maximal degree in co-relation 5677. Up to 500 conditions per place. [2024-06-28 03:40:31,298 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 108 selfloop transitions, 84 changer transitions 0/194 dead transitions. [2024-06-28 03:40:31,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 194 transitions, 2681 flow [2024-06-28 03:40:31,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:31,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:31,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-28 03:40:31,299 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835125448028674 [2024-06-28 03:40:31,299 INFO L175 Difference]: Start difference. First operand has 195 places, 178 transitions, 1983 flow. Second operand 9 states and 107 transitions. [2024-06-28 03:40:31,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 194 transitions, 2681 flow [2024-06-28 03:40:31,362 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 194 transitions, 2602 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-06-28 03:40:31,364 INFO L231 Difference]: Finished difference. Result has 199 places, 178 transitions, 2077 flow [2024-06-28 03:40:31,365 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1904, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2077, PETRI_PLACES=199, PETRI_TRANSITIONS=178} [2024-06-28 03:40:31,365 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 169 predicate places. [2024-06-28 03:40:31,365 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 178 transitions, 2077 flow [2024-06-28 03:40:31,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:31,365 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:31,366 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:31,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:40:31,366 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:31,366 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:31,366 INFO L85 PathProgramCache]: Analyzing trace with hash -176487452, now seen corresponding path program 12 times [2024-06-28 03:40:31,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:31,367 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124825869] [2024-06-28 03:40:31,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:31,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:31,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:32,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:32,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:32,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124825869] [2024-06-28 03:40:32,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124825869] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:32,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:32,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:32,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331680970] [2024-06-28 03:40:32,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:32,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:32,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:32,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:32,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:32,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:32,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 178 transitions, 2077 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:32,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:32,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:32,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:32,367 INFO L124 PetriNetUnfolderBase]: 473/843 cut-off events. [2024-06-28 03:40:32,368 INFO L125 PetriNetUnfolderBase]: For 38611/38611 co-relation queries the response was YES. [2024-06-28 03:40:32,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5815 conditions, 843 events. 473/843 cut-off events. For 38611/38611 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3975 event pairs, 91 based on Foata normal form. 2/845 useless extension candidates. Maximal degree in co-relation 5731. Up to 497 conditions per place. [2024-06-28 03:40:32,373 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 104 selfloop transitions, 86 changer transitions 0/192 dead transitions. [2024-06-28 03:40:32,373 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 192 transitions, 2679 flow [2024-06-28 03:40:32,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:32,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:32,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-28 03:40:32,374 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727598566308244 [2024-06-28 03:40:32,374 INFO L175 Difference]: Start difference. First operand has 199 places, 178 transitions, 2077 flow. Second operand 9 states and 104 transitions. [2024-06-28 03:40:32,374 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 192 transitions, 2679 flow [2024-06-28 03:40:32,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 192 transitions, 2487 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:32,441 INFO L231 Difference]: Finished difference. Result has 201 places, 178 transitions, 2062 flow [2024-06-28 03:40:32,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1885, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2062, PETRI_PLACES=201, PETRI_TRANSITIONS=178} [2024-06-28 03:40:32,442 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-28 03:40:32,442 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 178 transitions, 2062 flow [2024-06-28 03:40:32,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:32,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:32,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:32,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:40:32,443 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:32,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:32,443 INFO L85 PathProgramCache]: Analyzing trace with hash -1839145100, now seen corresponding path program 10 times [2024-06-28 03:40:32,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:32,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422041847] [2024-06-28 03:40:32,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:32,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:32,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:33,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:33,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:33,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422041847] [2024-06-28 03:40:33,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422041847] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:33,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:33,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:33,305 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794042536] [2024-06-28 03:40:33,305 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:33,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:33,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:33,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:33,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:33,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 31 [2024-06-28 03:40:33,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 178 transitions, 2062 flow. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:33,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:33,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 31 [2024-06-28 03:40:33,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:33,609 INFO L124 PetriNetUnfolderBase]: 418/778 cut-off events. [2024-06-28 03:40:33,609 INFO L125 PetriNetUnfolderBase]: For 38568/38576 co-relation queries the response was YES. [2024-06-28 03:40:33,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5480 conditions, 778 events. 418/778 cut-off events. For 38568/38576 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 3821 event pairs, 63 based on Foata normal form. 2/771 useless extension candidates. Maximal degree in co-relation 5395. Up to 602 conditions per place. [2024-06-28 03:40:33,615 INFO L140 encePairwiseOnDemand]: 23/31 looper letters, 127 selfloop transitions, 40 changer transitions 0/188 dead transitions. [2024-06-28 03:40:33,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 188 transitions, 2422 flow [2024-06-28 03:40:33,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:40:33,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:40:33,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 93 transitions. [2024-06-28 03:40:33,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:40:33,616 INFO L175 Difference]: Start difference. First operand has 201 places, 178 transitions, 2062 flow. Second operand 8 states and 93 transitions. [2024-06-28 03:40:33,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 188 transitions, 2422 flow [2024-06-28 03:40:33,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 188 transitions, 2248 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:33,681 INFO L231 Difference]: Finished difference. Result has 201 places, 178 transitions, 1972 flow [2024-06-28 03:40:33,682 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1888, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1972, PETRI_PLACES=201, PETRI_TRANSITIONS=178} [2024-06-28 03:40:33,682 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 171 predicate places. [2024-06-28 03:40:33,682 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 178 transitions, 1972 flow [2024-06-28 03:40:33,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:33,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:33,682 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:33,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:40:33,683 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:33,683 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:33,683 INFO L85 PathProgramCache]: Analyzing trace with hash -1611066010, now seen corresponding path program 13 times [2024-06-28 03:40:33,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:33,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198368480] [2024-06-28 03:40:33,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:33,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:34,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:34,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:34,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198368480] [2024-06-28 03:40:34,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198368480] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:34,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:34,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:34,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707900123] [2024-06-28 03:40:34,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:34,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:34,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:34,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:34,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:34,459 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:34,459 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 178 transitions, 1972 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:34,459 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:34,459 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:34,459 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:34,642 INFO L124 PetriNetUnfolderBase]: 476/848 cut-off events. [2024-06-28 03:40:34,642 INFO L125 PetriNetUnfolderBase]: For 39197/39197 co-relation queries the response was YES. [2024-06-28 03:40:34,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5678 conditions, 848 events. 476/848 cut-off events. For 39197/39197 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 3999 event pairs, 70 based on Foata normal form. 2/850 useless extension candidates. Maximal degree in co-relation 5592. Up to 498 conditions per place. [2024-06-28 03:40:34,649 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 96 selfloop transitions, 96 changer transitions 0/194 dead transitions. [2024-06-28 03:40:34,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 194 transitions, 2624 flow [2024-06-28 03:40:34,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:34,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:34,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 03:40:34,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36917562724014336 [2024-06-28 03:40:34,650 INFO L175 Difference]: Start difference. First operand has 201 places, 178 transitions, 1972 flow. Second operand 9 states and 103 transitions. [2024-06-28 03:40:34,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 194 transitions, 2624 flow [2024-06-28 03:40:34,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 194 transitions, 2492 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:34,726 INFO L231 Difference]: Finished difference. Result has 203 places, 180 transitions, 2075 flow [2024-06-28 03:40:34,727 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1840, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2075, PETRI_PLACES=203, PETRI_TRANSITIONS=180} [2024-06-28 03:40:34,727 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-28 03:40:34,727 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 180 transitions, 2075 flow [2024-06-28 03:40:34,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:34,728 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:34,728 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:34,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:40:34,728 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:34,729 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:34,729 INFO L85 PathProgramCache]: Analyzing trace with hash 36093658, now seen corresponding path program 14 times [2024-06-28 03:40:34,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:34,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627723433] [2024-06-28 03:40:34,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:34,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:34,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:35,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:35,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627723433] [2024-06-28 03:40:35,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627723433] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:35,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:35,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:35,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053291180] [2024-06-28 03:40:35,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:35,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:35,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:35,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:35,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:35,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:35,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 180 transitions, 2075 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:35,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:35,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:35,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:35,793 INFO L124 PetriNetUnfolderBase]: 482/858 cut-off events. [2024-06-28 03:40:35,793 INFO L125 PetriNetUnfolderBase]: For 41081/41081 co-relation queries the response was YES. [2024-06-28 03:40:35,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5864 conditions, 858 events. 482/858 cut-off events. For 41081/41081 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4059 event pairs, 70 based on Foata normal form. 2/860 useless extension candidates. Maximal degree in co-relation 5777. Up to 504 conditions per place. [2024-06-28 03:40:35,799 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 98 selfloop transitions, 97 changer transitions 0/197 dead transitions. [2024-06-28 03:40:35,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 197 transitions, 2745 flow [2024-06-28 03:40:35,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:35,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 03:40:35,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3763440860215054 [2024-06-28 03:40:35,801 INFO L175 Difference]: Start difference. First operand has 203 places, 180 transitions, 2075 flow. Second operand 9 states and 105 transitions. [2024-06-28 03:40:35,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 197 transitions, 2745 flow [2024-06-28 03:40:35,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 197 transitions, 2472 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:35,884 INFO L231 Difference]: Finished difference. Result has 203 places, 182 transitions, 2043 flow [2024-06-28 03:40:35,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1808, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2043, PETRI_PLACES=203, PETRI_TRANSITIONS=182} [2024-06-28 03:40:35,885 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 173 predicate places. [2024-06-28 03:40:35,885 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 182 transitions, 2043 flow [2024-06-28 03:40:35,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:35,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:35,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:35,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:40:35,886 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:35,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:35,886 INFO L85 PathProgramCache]: Analyzing trace with hash -91764038, now seen corresponding path program 4 times [2024-06-28 03:40:35,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:35,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [710648675] [2024-06-28 03:40:35,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:35,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:36,610 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:36,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:36,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [710648675] [2024-06-28 03:40:36,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [710648675] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:36,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:36,611 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:36,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534544277] [2024-06-28 03:40:36,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:36,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:36,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:36,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:36,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:36,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:36,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 182 transitions, 2043 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:36,672 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:36,672 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:36,672 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:36,852 INFO L124 PetriNetUnfolderBase]: 485/863 cut-off events. [2024-06-28 03:40:36,852 INFO L125 PetriNetUnfolderBase]: For 41049/41049 co-relation queries the response was YES. [2024-06-28 03:40:36,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5817 conditions, 863 events. 485/863 cut-off events. For 41049/41049 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4097 event pairs, 124 based on Foata normal form. 1/864 useless extension candidates. Maximal degree in co-relation 5730. Up to 773 conditions per place. [2024-06-28 03:40:36,858 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 151 selfloop transitions, 40 changer transitions 0/193 dead transitions. [2024-06-28 03:40:36,858 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 193 transitions, 2573 flow [2024-06-28 03:40:36,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:36,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:36,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 03:40:36,859 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34050179211469533 [2024-06-28 03:40:36,859 INFO L175 Difference]: Start difference. First operand has 203 places, 182 transitions, 2043 flow. Second operand 9 states and 95 transitions. [2024-06-28 03:40:36,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 193 transitions, 2573 flow [2024-06-28 03:40:36,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 193 transitions, 2362 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:36,933 INFO L231 Difference]: Finished difference. Result has 206 places, 184 transitions, 1945 flow [2024-06-28 03:40:36,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1945, PETRI_PLACES=206, PETRI_TRANSITIONS=184} [2024-06-28 03:40:36,934 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 176 predicate places. [2024-06-28 03:40:36,934 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 184 transitions, 1945 flow [2024-06-28 03:40:36,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:36,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:36,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:36,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:40:36,935 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:36,935 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:36,935 INFO L85 PathProgramCache]: Analyzing trace with hash -1602785042, now seen corresponding path program 5 times [2024-06-28 03:40:36,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:36,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6952089] [2024-06-28 03:40:36,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:36,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:37,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:37,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:37,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6952089] [2024-06-28 03:40:37,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6952089] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:37,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:37,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:37,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973054899] [2024-06-28 03:40:37,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:37,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:37,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:37,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:37,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:37,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:37,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 184 transitions, 1945 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:37,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:37,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:37,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:37,891 INFO L124 PetriNetUnfolderBase]: 488/868 cut-off events. [2024-06-28 03:40:37,892 INFO L125 PetriNetUnfolderBase]: For 42053/42053 co-relation queries the response was YES. [2024-06-28 03:40:37,896 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5696 conditions, 868 events. 488/868 cut-off events. For 42053/42053 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4119 event pairs, 124 based on Foata normal form. 1/869 useless extension candidates. Maximal degree in co-relation 5608. Up to 777 conditions per place. [2024-06-28 03:40:37,898 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 148 selfloop transitions, 45 changer transitions 0/195 dead transitions. [2024-06-28 03:40:37,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 195 transitions, 2485 flow [2024-06-28 03:40:37,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:37,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:37,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 94 transitions. [2024-06-28 03:40:37,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33691756272401435 [2024-06-28 03:40:37,899 INFO L175 Difference]: Start difference. First operand has 206 places, 184 transitions, 1945 flow. Second operand 9 states and 94 transitions. [2024-06-28 03:40:37,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 195 transitions, 2485 flow [2024-06-28 03:40:37,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 195 transitions, 2379 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:37,999 INFO L231 Difference]: Finished difference. Result has 208 places, 186 transitions, 1966 flow [2024-06-28 03:40:37,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1843, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1966, PETRI_PLACES=208, PETRI_TRANSITIONS=186} [2024-06-28 03:40:37,999 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 178 predicate places. [2024-06-28 03:40:37,999 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 186 transitions, 1966 flow [2024-06-28 03:40:37,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:37,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:37,999 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:37,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:40:38,000 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:38,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:38,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1602488372, now seen corresponding path program 6 times [2024-06-28 03:40:38,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:38,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860788249] [2024-06-28 03:40:38,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:38,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:38,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:38,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:38,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860788249] [2024-06-28 03:40:38,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860788249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:38,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:38,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:38,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141231586] [2024-06-28 03:40:38,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:38,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:38,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:38,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:38,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:38,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:38,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 186 transitions, 1966 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:38,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:38,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:38,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:39,085 INFO L124 PetriNetUnfolderBase]: 486/866 cut-off events. [2024-06-28 03:40:39,085 INFO L125 PetriNetUnfolderBase]: For 42201/42201 co-relation queries the response was YES. [2024-06-28 03:40:39,091 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5646 conditions, 866 events. 486/866 cut-off events. For 42201/42201 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4111 event pairs, 163 based on Foata normal form. 1/867 useless extension candidates. Maximal degree in co-relation 5557. Up to 837 conditions per place. [2024-06-28 03:40:39,094 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 177 selfloop transitions, 15 changer transitions 0/194 dead transitions. [2024-06-28 03:40:39,094 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 194 transitions, 2368 flow [2024-06-28 03:40:39,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:39,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:39,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-28 03:40:39,095 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-28 03:40:39,095 INFO L175 Difference]: Start difference. First operand has 208 places, 186 transitions, 1966 flow. Second operand 9 states and 87 transitions. [2024-06-28 03:40:39,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 194 transitions, 2368 flow [2024-06-28 03:40:39,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 194 transitions, 2239 flow, removed 19 selfloop flow, removed 7 redundant places. [2024-06-28 03:40:39,191 INFO L231 Difference]: Finished difference. Result has 210 places, 186 transitions, 1872 flow [2024-06-28 03:40:39,191 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1837, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1872, PETRI_PLACES=210, PETRI_TRANSITIONS=186} [2024-06-28 03:40:39,192 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 180 predicate places. [2024-06-28 03:40:39,192 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 186 transitions, 1872 flow [2024-06-28 03:40:39,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:39,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:39,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:39,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:40:39,193 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:39,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:39,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1602785290, now seen corresponding path program 15 times [2024-06-28 03:40:39,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:39,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239377611] [2024-06-28 03:40:39,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:39,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:39,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:39,958 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:39,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:39,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239377611] [2024-06-28 03:40:39,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239377611] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:39,958 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:39,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:40:39,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179103799] [2024-06-28 03:40:39,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:39,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:40:39,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:39,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:40:39,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:40:40,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:40,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 186 transitions, 1872 flow. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:40,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:40,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:40,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:40,210 INFO L124 PetriNetUnfolderBase]: 482/859 cut-off events. [2024-06-28 03:40:40,210 INFO L125 PetriNetUnfolderBase]: For 42066/42066 co-relation queries the response was YES. [2024-06-28 03:40:40,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5440 conditions, 859 events. 482/859 cut-off events. For 42066/42066 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4065 event pairs, 63 based on Foata normal form. 2/861 useless extension candidates. Maximal degree in co-relation 5350. Up to 508 conditions per place. [2024-06-28 03:40:40,216 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 85 selfloop transitions, 112 changer transitions 0/199 dead transitions. [2024-06-28 03:40:40,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 199 transitions, 2408 flow [2024-06-28 03:40:40,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:40:40,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:40:40,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 03:40:40,221 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36200716845878134 [2024-06-28 03:40:40,221 INFO L175 Difference]: Start difference. First operand has 210 places, 186 transitions, 1872 flow. Second operand 9 states and 101 transitions. [2024-06-28 03:40:40,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 199 transitions, 2408 flow [2024-06-28 03:40:40,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 199 transitions, 2347 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:40,300 INFO L231 Difference]: Finished difference. Result has 211 places, 186 transitions, 2040 flow [2024-06-28 03:40:40,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1811, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2040, PETRI_PLACES=211, PETRI_TRANSITIONS=186} [2024-06-28 03:40:40,300 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 181 predicate places. [2024-06-28 03:40:40,300 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 186 transitions, 2040 flow [2024-06-28 03:40:40,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 10 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:40,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:40,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:40,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:40:40,301 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:40,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:40,302 INFO L85 PathProgramCache]: Analyzing trace with hash 60175228, now seen corresponding path program 1 times [2024-06-28 03:40:40,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:40,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428052968] [2024-06-28 03:40:40,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:40,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:40,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:41,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:41,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:41,275 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428052968] [2024-06-28 03:40:41,275 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428052968] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:41,275 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:41,275 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:41,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191207302] [2024-06-28 03:40:41,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:41,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:41,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:41,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:41,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:41,376 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:41,376 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 186 transitions, 2040 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:41,376 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:41,376 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:41,376 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:41,590 INFO L124 PetriNetUnfolderBase]: 479/854 cut-off events. [2024-06-28 03:40:41,590 INFO L125 PetriNetUnfolderBase]: For 40988/40988 co-relation queries the response was YES. [2024-06-28 03:40:41,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5570 conditions, 854 events. 479/854 cut-off events. For 40988/40988 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4058 event pairs, 161 based on Foata normal form. 2/856 useless extension candidates. Maximal degree in co-relation 5479. Up to 820 conditions per place. [2024-06-28 03:40:41,597 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 178 selfloop transitions, 16 changer transitions 0/196 dead transitions. [2024-06-28 03:40:41,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 220 places, 196 transitions, 2450 flow [2024-06-28 03:40:41,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:41,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:41,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2024-06-28 03:40:41,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3032258064516129 [2024-06-28 03:40:41,598 INFO L175 Difference]: Start difference. First operand has 211 places, 186 transitions, 2040 flow. Second operand 10 states and 94 transitions. [2024-06-28 03:40:41,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 220 places, 196 transitions, 2450 flow [2024-06-28 03:40:41,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 196 transitions, 2210 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:41,679 INFO L231 Difference]: Finished difference. Result has 212 places, 186 transitions, 1836 flow [2024-06-28 03:40:41,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1800, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1836, PETRI_PLACES=212, PETRI_TRANSITIONS=186} [2024-06-28 03:40:41,680 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-28 03:40:41,680 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 186 transitions, 1836 flow [2024-06-28 03:40:41,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:41,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:41,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:41,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:40:41,680 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:41,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:41,680 INFO L85 PathProgramCache]: Analyzing trace with hash -64279874, now seen corresponding path program 1 times [2024-06-28 03:40:41,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:41,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [157555565] [2024-06-28 03:40:41,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:41,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:42,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:42,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:42,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [157555565] [2024-06-28 03:40:42,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [157555565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:42,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:42,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:42,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150085793] [2024-06-28 03:40:42,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:42,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:42,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:42,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:42,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:42,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:42,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 186 transitions, 1836 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:42,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:42,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:42,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:42,800 INFO L124 PetriNetUnfolderBase]: 483/862 cut-off events. [2024-06-28 03:40:42,801 INFO L125 PetriNetUnfolderBase]: For 42321/42321 co-relation queries the response was YES. [2024-06-28 03:40:42,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5376 conditions, 862 events. 483/862 cut-off events. For 42321/42321 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4096 event pairs, 76 based on Foata normal form. 2/864 useless extension candidates. Maximal degree in co-relation 5284. Up to 742 conditions per place. [2024-06-28 03:40:42,807 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 176 selfloop transitions, 27 changer transitions 0/205 dead transitions. [2024-06-28 03:40:42,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 205 transitions, 2302 flow [2024-06-28 03:40:42,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:42,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:42,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 03:40:42,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-28 03:40:42,809 INFO L175 Difference]: Start difference. First operand has 212 places, 186 transitions, 1836 flow. Second operand 10 states and 102 transitions. [2024-06-28 03:40:42,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 205 transitions, 2302 flow [2024-06-28 03:40:42,919 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 205 transitions, 2262 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:42,921 INFO L231 Difference]: Finished difference. Result has 214 places, 187 transitions, 1872 flow [2024-06-28 03:40:42,922 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1796, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1872, PETRI_PLACES=214, PETRI_TRANSITIONS=187} [2024-06-28 03:40:42,922 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 184 predicate places. [2024-06-28 03:40:42,922 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 187 transitions, 1872 flow [2024-06-28 03:40:42,922 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:42,922 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:42,922 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:42,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:40:42,922 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:42,923 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:42,923 INFO L85 PathProgramCache]: Analyzing trace with hash -1661801260, now seen corresponding path program 2 times [2024-06-28 03:40:42,923 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:42,923 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097342845] [2024-06-28 03:40:42,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:42,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:42,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:43,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:43,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:43,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097342845] [2024-06-28 03:40:43,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2097342845] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:43,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:43,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:43,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522240593] [2024-06-28 03:40:43,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:43,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:43,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:43,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:43,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:43,739 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:43,739 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 187 transitions, 1872 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:43,739 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:43,739 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:43,739 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:44,000 INFO L124 PetriNetUnfolderBase]: 487/870 cut-off events. [2024-06-28 03:40:44,001 INFO L125 PetriNetUnfolderBase]: For 43527/43527 co-relation queries the response was YES. [2024-06-28 03:40:44,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5479 conditions, 870 events. 487/870 cut-off events. For 43527/43527 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4160 event pairs, 111 based on Foata normal form. 2/872 useless extension candidates. Maximal degree in co-relation 5386. Up to 785 conditions per place. [2024-06-28 03:40:44,009 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 179 selfloop transitions, 25 changer transitions 0/206 dead transitions. [2024-06-28 03:40:44,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 206 transitions, 2344 flow [2024-06-28 03:40:44,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:44,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:44,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 03:40:44,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 03:40:44,010 INFO L175 Difference]: Start difference. First operand has 214 places, 187 transitions, 1872 flow. Second operand 10 states and 105 transitions. [2024-06-28 03:40:44,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 206 transitions, 2344 flow [2024-06-28 03:40:44,127 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 206 transitions, 2278 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:44,129 INFO L231 Difference]: Finished difference. Result has 216 places, 188 transitions, 1880 flow [2024-06-28 03:40:44,130 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1806, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1880, PETRI_PLACES=216, PETRI_TRANSITIONS=188} [2024-06-28 03:40:44,130 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 186 predicate places. [2024-06-28 03:40:44,130 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 188 transitions, 1880 flow [2024-06-28 03:40:44,130 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:44,130 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:44,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:44,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:40:44,131 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:44,131 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:44,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1659293050, now seen corresponding path program 3 times [2024-06-28 03:40:44,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:44,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914774551] [2024-06-28 03:40:44,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:44,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:44,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:44,994 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:44,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:44,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914774551] [2024-06-28 03:40:44,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914774551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:44,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:44,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:44,995 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287322199] [2024-06-28 03:40:44,995 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:44,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:44,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:44,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:44,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:45,083 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:45,083 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 188 transitions, 1880 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:45,083 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:45,084 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:45,084 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:45,357 INFO L124 PetriNetUnfolderBase]: 498/891 cut-off events. [2024-06-28 03:40:45,357 INFO L125 PetriNetUnfolderBase]: For 49083/49083 co-relation queries the response was YES. [2024-06-28 03:40:45,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5725 conditions, 891 events. 498/891 cut-off events. For 49083/49083 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4302 event pairs, 108 based on Foata normal form. 2/893 useless extension candidates. Maximal degree in co-relation 5631. Up to 785 conditions per place. [2024-06-28 03:40:45,365 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 175 selfloop transitions, 31 changer transitions 0/208 dead transitions. [2024-06-28 03:40:45,365 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 208 transitions, 2492 flow [2024-06-28 03:40:45,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:45,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:45,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 03:40:45,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 03:40:45,368 INFO L175 Difference]: Start difference. First operand has 216 places, 188 transitions, 1880 flow. Second operand 10 states and 108 transitions. [2024-06-28 03:40:45,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 208 transitions, 2492 flow [2024-06-28 03:40:45,473 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 208 transitions, 2428 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:45,475 INFO L231 Difference]: Finished difference. Result has 218 places, 190 transitions, 1924 flow [2024-06-28 03:40:45,475 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1816, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1924, PETRI_PLACES=218, PETRI_TRANSITIONS=190} [2024-06-28 03:40:45,476 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 188 predicate places. [2024-06-28 03:40:45,476 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 190 transitions, 1924 flow [2024-06-28 03:40:45,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:45,476 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:45,476 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:45,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:40:45,476 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:45,477 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:45,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1306614955, now seen corresponding path program 2 times [2024-06-28 03:40:45,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:45,477 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1307530609] [2024-06-28 03:40:45,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:45,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:45,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:46,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:46,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:46,338 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1307530609] [2024-06-28 03:40:46,338 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1307530609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:46,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:46,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:46,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796685747] [2024-06-28 03:40:46,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:46,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:46,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:46,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:46,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:46,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:46,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 190 transitions, 1924 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:46,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:46,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:46,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:46,690 INFO L124 PetriNetUnfolderBase]: 496/888 cut-off events. [2024-06-28 03:40:46,690 INFO L125 PetriNetUnfolderBase]: For 47521/47521 co-relation queries the response was YES. [2024-06-28 03:40:46,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5671 conditions, 888 events. 496/888 cut-off events. For 47521/47521 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4276 event pairs, 109 based on Foata normal form. 1/889 useless extension candidates. Maximal degree in co-relation 5576. Up to 798 conditions per place. [2024-06-28 03:40:46,698 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 171 selfloop transitions, 34 changer transitions 0/207 dead transitions. [2024-06-28 03:40:46,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 207 transitions, 2382 flow [2024-06-28 03:40:46,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:46,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:46,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:40:46,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 03:40:46,699 INFO L175 Difference]: Start difference. First operand has 218 places, 190 transitions, 1924 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:40:46,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 207 transitions, 2382 flow [2024-06-28 03:40:46,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 207 transitions, 2310 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:46,839 INFO L231 Difference]: Finished difference. Result has 222 places, 190 transitions, 1928 flow [2024-06-28 03:40:46,839 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1852, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1928, PETRI_PLACES=222, PETRI_TRANSITIONS=190} [2024-06-28 03:40:46,839 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-28 03:40:46,839 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 190 transitions, 1928 flow [2024-06-28 03:40:46,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:46,839 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:46,839 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:46,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:40:46,840 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:46,840 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:46,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1306619760, now seen corresponding path program 4 times [2024-06-28 03:40:46,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:46,840 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981903181] [2024-06-28 03:40:46,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:46,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:46,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:47,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:47,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:47,673 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981903181] [2024-06-28 03:40:47,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981903181] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:47,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:47,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:47,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2452937] [2024-06-28 03:40:47,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:47,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:47,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:47,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:47,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:47,786 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:47,787 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 190 transitions, 1928 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:47,787 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:47,787 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:47,787 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:48,074 INFO L124 PetriNetUnfolderBase]: 493/883 cut-off events. [2024-06-28 03:40:48,074 INFO L125 PetriNetUnfolderBase]: For 46840/46840 co-relation queries the response was YES. [2024-06-28 03:40:48,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5560 conditions, 883 events. 493/883 cut-off events. For 46840/46840 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4274 event pairs, 109 based on Foata normal form. 2/885 useless extension candidates. Maximal degree in co-relation 5463. Up to 796 conditions per place. [2024-06-28 03:40:48,084 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 174 selfloop transitions, 31 changer transitions 0/207 dead transitions. [2024-06-28 03:40:48,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 207 transitions, 2384 flow [2024-06-28 03:40:48,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:48,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:48,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:40:48,086 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-28 03:40:48,086 INFO L175 Difference]: Start difference. First operand has 222 places, 190 transitions, 1928 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:40:48,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 207 transitions, 2384 flow [2024-06-28 03:40:48,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 207 transitions, 2226 flow, removed 13 selfloop flow, removed 11 redundant places. [2024-06-28 03:40:48,214 INFO L231 Difference]: Finished difference. Result has 221 places, 190 transitions, 1837 flow [2024-06-28 03:40:48,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1770, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1837, PETRI_PLACES=221, PETRI_TRANSITIONS=190} [2024-06-28 03:40:48,214 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 191 predicate places. [2024-06-28 03:40:48,214 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 190 transitions, 1837 flow [2024-06-28 03:40:48,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:48,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:48,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:48,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:40:48,215 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:48,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:48,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1363169956, now seen corresponding path program 1 times [2024-06-28 03:40:48,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:48,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820795984] [2024-06-28 03:40:48,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:48,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:48,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:48,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:48,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:48,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820795984] [2024-06-28 03:40:48,908 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820795984] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:48,908 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:48,908 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:48,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484227181] [2024-06-28 03:40:48,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:48,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:48,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:48,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:48,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:49,007 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:49,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 190 transitions, 1837 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:49,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:49,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:49,008 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:49,272 INFO L124 PetriNetUnfolderBase]: 499/893 cut-off events. [2024-06-28 03:40:49,272 INFO L125 PetriNetUnfolderBase]: For 48037/48037 co-relation queries the response was YES. [2024-06-28 03:40:49,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5555 conditions, 893 events. 499/893 cut-off events. For 48037/48037 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4315 event pairs, 86 based on Foata normal form. 2/895 useless extension candidates. Maximal degree in co-relation 5457. Up to 804 conditions per place. [2024-06-28 03:40:49,279 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 176 selfloop transitions, 33 changer transitions 0/211 dead transitions. [2024-06-28 03:40:49,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 211 transitions, 2341 flow [2024-06-28 03:40:49,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:49,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:49,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 03:40:49,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-28 03:40:49,280 INFO L175 Difference]: Start difference. First operand has 221 places, 190 transitions, 1837 flow. Second operand 11 states and 115 transitions. [2024-06-28 03:40:49,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 211 transitions, 2341 flow [2024-06-28 03:40:49,382 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 211 transitions, 2276 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:49,385 INFO L231 Difference]: Finished difference. Result has 223 places, 192 transitions, 1879 flow [2024-06-28 03:40:49,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1772, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1879, PETRI_PLACES=223, PETRI_TRANSITIONS=192} [2024-06-28 03:40:49,386 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 193 predicate places. [2024-06-28 03:40:49,386 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 192 transitions, 1879 flow [2024-06-28 03:40:49,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:49,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:49,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:49,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:40:49,387 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:49,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:49,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1093795398, now seen corresponding path program 5 times [2024-06-28 03:40:49,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:49,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497349640] [2024-06-28 03:40:49,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:49,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:49,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:50,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:50,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:50,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497349640] [2024-06-28 03:40:50,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497349640] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:50,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:50,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:50,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389308256] [2024-06-28 03:40:50,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:50,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:50,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:50,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:50,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:50,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:50,279 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 192 transitions, 1879 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:50,279 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:50,279 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:50,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:50,557 INFO L124 PetriNetUnfolderBase]: 503/901 cut-off events. [2024-06-28 03:40:50,557 INFO L125 PetriNetUnfolderBase]: For 49707/49707 co-relation queries the response was YES. [2024-06-28 03:40:50,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5672 conditions, 901 events. 503/901 cut-off events. For 49707/49707 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4361 event pairs, 86 based on Foata normal form. 2/903 useless extension candidates. Maximal degree in co-relation 5573. Up to 816 conditions per place. [2024-06-28 03:40:50,564 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 184 selfloop transitions, 24 changer transitions 0/210 dead transitions. [2024-06-28 03:40:50,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 210 transitions, 2361 flow [2024-06-28 03:40:50,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:50,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:50,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:40:50,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-28 03:40:50,565 INFO L175 Difference]: Start difference. First operand has 223 places, 192 transitions, 1879 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:40:50,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 210 transitions, 2361 flow [2024-06-28 03:40:50,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 210 transitions, 2270 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:50,679 INFO L231 Difference]: Finished difference. Result has 224 places, 193 transitions, 1864 flow [2024-06-28 03:40:50,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1788, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1864, PETRI_PLACES=224, PETRI_TRANSITIONS=193} [2024-06-28 03:40:50,680 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 194 predicate places. [2024-06-28 03:40:50,680 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 193 transitions, 1864 flow [2024-06-28 03:40:50,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:50,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:50,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:50,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:40:50,680 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:50,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:50,681 INFO L85 PathProgramCache]: Analyzing trace with hash 1970004674, now seen corresponding path program 6 times [2024-06-28 03:40:50,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:50,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066365862] [2024-06-28 03:40:50,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:50,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:50,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:51,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:51,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:51,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066365862] [2024-06-28 03:40:51,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066365862] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:51,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:51,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:51,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035696237] [2024-06-28 03:40:51,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:51,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:51,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:51,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:51,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:51,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:51,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 193 transitions, 1864 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:51,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:51,621 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:51,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:51,931 INFO L124 PetriNetUnfolderBase]: 514/922 cut-off events. [2024-06-28 03:40:51,931 INFO L125 PetriNetUnfolderBase]: For 55753/55753 co-relation queries the response was YES. [2024-06-28 03:40:51,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5927 conditions, 922 events. 514/922 cut-off events. For 55753/55753 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4526 event pairs, 87 based on Foata normal form. 2/924 useless extension candidates. Maximal degree in co-relation 5827. Up to 816 conditions per place. [2024-06-28 03:40:51,940 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 180 selfloop transitions, 30 changer transitions 0/212 dead transitions. [2024-06-28 03:40:51,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 212 transitions, 2500 flow [2024-06-28 03:40:51,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:51,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:51,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:40:51,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 03:40:51,942 INFO L175 Difference]: Start difference. First operand has 224 places, 193 transitions, 1864 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:40:51,942 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 212 transitions, 2500 flow [2024-06-28 03:40:52,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 212 transitions, 2434 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:52,082 INFO L231 Difference]: Finished difference. Result has 226 places, 195 transitions, 1912 flow [2024-06-28 03:40:52,083 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1798, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1912, PETRI_PLACES=226, PETRI_TRANSITIONS=195} [2024-06-28 03:40:52,083 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 196 predicate places. [2024-06-28 03:40:52,083 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 195 transitions, 1912 flow [2024-06-28 03:40:52,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:52,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:52,084 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:52,084 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:40:52,084 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:52,084 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:52,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1970008394, now seen corresponding path program 7 times [2024-06-28 03:40:52,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:52,085 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164658857] [2024-06-28 03:40:52,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:52,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:52,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:53,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:53,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:53,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164658857] [2024-06-28 03:40:53,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164658857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:53,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:53,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:53,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243704902] [2024-06-28 03:40:53,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:53,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:53,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:53,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:53,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:53,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:53,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 195 transitions, 1912 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:53,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:53,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:53,202 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:53,538 INFO L124 PetriNetUnfolderBase]: 511/917 cut-off events. [2024-06-28 03:40:53,539 INFO L125 PetriNetUnfolderBase]: For 53491/53491 co-relation queries the response was YES. [2024-06-28 03:40:53,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5784 conditions, 917 events. 511/917 cut-off events. For 53491/53491 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4491 event pairs, 86 based on Foata normal form. 2/919 useless extension candidates. Maximal degree in co-relation 5683. Up to 830 conditions per place. [2024-06-28 03:40:53,546 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 179 selfloop transitions, 30 changer transitions 0/211 dead transitions. [2024-06-28 03:40:53,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 211 transitions, 2374 flow [2024-06-28 03:40:53,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:53,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:53,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:40:53,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 03:40:53,547 INFO L175 Difference]: Start difference. First operand has 226 places, 195 transitions, 1912 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:40:53,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 211 transitions, 2374 flow [2024-06-28 03:40:53,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 229 places, 211 transitions, 2294 flow, removed 22 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:53,676 INFO L231 Difference]: Finished difference. Result has 230 places, 195 transitions, 1897 flow [2024-06-28 03:40:53,676 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1897, PETRI_PLACES=230, PETRI_TRANSITIONS=195} [2024-06-28 03:40:53,676 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 200 predicate places. [2024-06-28 03:40:53,677 INFO L495 AbstractCegarLoop]: Abstraction has has 230 places, 195 transitions, 1897 flow [2024-06-28 03:40:53,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:53,677 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:53,677 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:53,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:40:53,677 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:53,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:53,678 INFO L85 PathProgramCache]: Analyzing trace with hash 2056850306, now seen corresponding path program 2 times [2024-06-28 03:40:53,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:53,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1469852622] [2024-06-28 03:40:53,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:53,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:53,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:54,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:54,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:54,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1469852622] [2024-06-28 03:40:54,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1469852622] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:54,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:54,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:54,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299983793] [2024-06-28 03:40:54,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:54,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:54,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:54,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:54,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:54,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:54,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 230 places, 195 transitions, 1897 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:54,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:54,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:54,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:54,736 INFO L124 PetriNetUnfolderBase]: 517/927 cut-off events. [2024-06-28 03:40:54,736 INFO L125 PetriNetUnfolderBase]: For 54649/54649 co-relation queries the response was YES. [2024-06-28 03:40:54,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5837 conditions, 927 events. 517/927 cut-off events. For 54649/54649 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4562 event pairs, 88 based on Foata normal form. 2/929 useless extension candidates. Maximal degree in co-relation 5734. Up to 838 conditions per place. [2024-06-28 03:40:54,747 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 183 selfloop transitions, 30 changer transitions 0/215 dead transitions. [2024-06-28 03:40:54,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 215 transitions, 2411 flow [2024-06-28 03:40:54,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:54,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:54,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 03:40:54,749 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 03:40:54,749 INFO L175 Difference]: Start difference. First operand has 230 places, 195 transitions, 1897 flow. Second operand 11 states and 116 transitions. [2024-06-28 03:40:54,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 215 transitions, 2411 flow [2024-06-28 03:40:54,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 215 transitions, 2348 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:54,899 INFO L231 Difference]: Finished difference. Result has 232 places, 197 transitions, 1939 flow [2024-06-28 03:40:54,900 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1834, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1939, PETRI_PLACES=232, PETRI_TRANSITIONS=197} [2024-06-28 03:40:54,900 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 202 predicate places. [2024-06-28 03:40:54,900 INFO L495 AbstractCegarLoop]: Abstraction has has 232 places, 197 transitions, 1939 flow [2024-06-28 03:40:54,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:54,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:54,900 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:54,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:40:54,900 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:54,901 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:54,901 INFO L85 PathProgramCache]: Analyzing trace with hash -406215652, now seen corresponding path program 8 times [2024-06-28 03:40:54,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:54,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67823402] [2024-06-28 03:40:54,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:54,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:54,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:55,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:55,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:55,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67823402] [2024-06-28 03:40:55,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67823402] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:55,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:55,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:55,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189497889] [2024-06-28 03:40:55,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:55,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:55,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:55,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:55,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:55,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:55,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 232 places, 197 transitions, 1939 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:55,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:55,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:55,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:56,185 INFO L124 PetriNetUnfolderBase]: 521/936 cut-off events. [2024-06-28 03:40:56,186 INFO L125 PetriNetUnfolderBase]: For 56896/56896 co-relation queries the response was YES. [2024-06-28 03:40:56,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5956 conditions, 936 events. 521/936 cut-off events. For 56896/56896 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 4616 event pairs, 78 based on Foata normal form. 2/938 useless extension candidates. Maximal degree in co-relation 5852. Up to 804 conditions per place. [2024-06-28 03:40:56,197 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 166 selfloop transitions, 46 changer transitions 0/214 dead transitions. [2024-06-28 03:40:56,197 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 214 transitions, 2433 flow [2024-06-28 03:40:56,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:40:56,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:40:56,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 03:40:56,198 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 03:40:56,198 INFO L175 Difference]: Start difference. First operand has 232 places, 197 transitions, 1939 flow. Second operand 10 states and 108 transitions. [2024-06-28 03:40:56,199 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 214 transitions, 2433 flow [2024-06-28 03:40:56,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 214 transitions, 2344 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 03:40:56,331 INFO L231 Difference]: Finished difference. Result has 233 places, 198 transitions, 1974 flow [2024-06-28 03:40:56,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1850, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1974, PETRI_PLACES=233, PETRI_TRANSITIONS=198} [2024-06-28 03:40:56,332 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 203 predicate places. [2024-06-28 03:40:56,332 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 198 transitions, 1974 flow [2024-06-28 03:40:56,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:56,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:56,332 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:56,332 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:40:56,333 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:56,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:56,333 INFO L85 PathProgramCache]: Analyzing trace with hash -406209700, now seen corresponding path program 3 times [2024-06-28 03:40:56,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:56,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659225564] [2024-06-28 03:40:56,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:56,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:57,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:57,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:57,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659225564] [2024-06-28 03:40:57,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659225564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:57,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:57,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:57,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371418867] [2024-06-28 03:40:57,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:57,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:57,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:57,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:57,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:57,161 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:57,161 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 198 transitions, 1974 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:57,161 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:57,161 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:57,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:57,400 INFO L124 PetriNetUnfolderBase]: 572/1017 cut-off events. [2024-06-28 03:40:57,401 INFO L125 PetriNetUnfolderBase]: For 77952/77952 co-relation queries the response was YES. [2024-06-28 03:40:57,406 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7068 conditions, 1017 events. 572/1017 cut-off events. For 77952/77952 co-relation queries the response was YES. Maximal size of possible extension queue 102. Compared 5055 event pairs, 79 based on Foata normal form. 2/1019 useless extension candidates. Maximal degree in co-relation 6963. Up to 745 conditions per place. [2024-06-28 03:40:57,408 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 166 selfloop transitions, 59 changer transitions 0/227 dead transitions. [2024-06-28 03:40:57,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 227 transitions, 2892 flow [2024-06-28 03:40:57,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:57,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:57,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:40:57,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 03:40:57,409 INFO L175 Difference]: Start difference. First operand has 233 places, 198 transitions, 1974 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:40:57,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 227 transitions, 2892 flow [2024-06-28 03:40:57,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 227 transitions, 2778 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-28 03:40:57,574 INFO L231 Difference]: Finished difference. Result has 238 places, 206 transitions, 2165 flow [2024-06-28 03:40:57,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1860, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2165, PETRI_PLACES=238, PETRI_TRANSITIONS=206} [2024-06-28 03:40:57,575 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-28 03:40:57,575 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 206 transitions, 2165 flow [2024-06-28 03:40:57,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:57,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:57,575 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:57,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:40:57,575 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:57,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:57,576 INFO L85 PathProgramCache]: Analyzing trace with hash -406007890, now seen corresponding path program 4 times [2024-06-28 03:40:57,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:57,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008545236] [2024-06-28 03:40:57,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:57,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:58,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:58,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:58,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008545236] [2024-06-28 03:40:58,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008545236] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:58,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:58,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:58,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856285860] [2024-06-28 03:40:58,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:58,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:58,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:58,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:58,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:58,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:58,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 206 transitions, 2165 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:58,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:58,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:58,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:40:58,753 INFO L124 PetriNetUnfolderBase]: 578/1027 cut-off events. [2024-06-28 03:40:58,754 INFO L125 PetriNetUnfolderBase]: For 80579/80579 co-relation queries the response was YES. [2024-06-28 03:40:58,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7336 conditions, 1027 events. 578/1027 cut-off events. For 80579/80579 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5131 event pairs, 77 based on Foata normal form. 2/1029 useless extension candidates. Maximal degree in co-relation 7228. Up to 747 conditions per place. [2024-06-28 03:40:58,767 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 162 selfloop transitions, 65 changer transitions 0/229 dead transitions. [2024-06-28 03:40:58,767 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 229 transitions, 3006 flow [2024-06-28 03:40:58,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:40:58,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:40:58,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 03:40:58,768 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 03:40:58,769 INFO L175 Difference]: Start difference. First operand has 238 places, 206 transitions, 2165 flow. Second operand 11 states and 125 transitions. [2024-06-28 03:40:58,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 229 transitions, 3006 flow [2024-06-28 03:40:58,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 229 transitions, 2921 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-28 03:40:58,967 INFO L231 Difference]: Finished difference. Result has 243 places, 208 transitions, 2262 flow [2024-06-28 03:40:58,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2082, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2262, PETRI_PLACES=243, PETRI_TRANSITIONS=208} [2024-06-28 03:40:58,967 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 213 predicate places. [2024-06-28 03:40:58,967 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 208 transitions, 2262 flow [2024-06-28 03:40:58,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:58,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:40:58,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:40:58,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:40:58,968 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:40:58,968 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:40:58,968 INFO L85 PathProgramCache]: Analyzing trace with hash -406000450, now seen corresponding path program 5 times [2024-06-28 03:40:58,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:40:58,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1264148466] [2024-06-28 03:40:58,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:40:58,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:40:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:40:59,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:40:59,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:40:59,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1264148466] [2024-06-28 03:40:59,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1264148466] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:40:59,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:40:59,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:40:59,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726021875] [2024-06-28 03:40:59,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:40:59,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:40:59,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:40:59,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:40:59,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:40:59,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:40:59,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 208 transitions, 2262 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:40:59,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:40:59,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:40:59,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:00,115 INFO L124 PetriNetUnfolderBase]: 572/1019 cut-off events. [2024-06-28 03:41:00,116 INFO L125 PetriNetUnfolderBase]: For 78402/78402 co-relation queries the response was YES. [2024-06-28 03:41:00,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7149 conditions, 1019 events. 572/1019 cut-off events. For 78402/78402 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5072 event pairs, 75 based on Foata normal form. 4/1023 useless extension candidates. Maximal degree in co-relation 7039. Up to 746 conditions per place. [2024-06-28 03:41:00,124 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 156 selfloop transitions, 70 changer transitions 0/228 dead transitions. [2024-06-28 03:41:00,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 228 transitions, 2920 flow [2024-06-28 03:41:00,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:00,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:00,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:41:00,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 03:41:00,125 INFO L175 Difference]: Start difference. First operand has 243 places, 208 transitions, 2262 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:41:00,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 228 transitions, 2920 flow [2024-06-28 03:41:00,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 228 transitions, 2740 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:00,317 INFO L231 Difference]: Finished difference. Result has 246 places, 208 transitions, 2229 flow [2024-06-28 03:41:00,317 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2082, PETRI_DIFFERENCE_MINUEND_PLACES=235, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2229, PETRI_PLACES=246, PETRI_TRANSITIONS=208} [2024-06-28 03:41:00,317 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 216 predicate places. [2024-06-28 03:41:00,317 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 208 transitions, 2229 flow [2024-06-28 03:41:00,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:00,318 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:00,318 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:00,318 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:41:00,318 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:00,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:00,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1693856879, now seen corresponding path program 1 times [2024-06-28 03:41:00,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:00,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010832152] [2024-06-28 03:41:00,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:00,319 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:01,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:01,306 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010832152] [2024-06-28 03:41:01,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010832152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:01,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:01,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:01,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399070119] [2024-06-28 03:41:01,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:01,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:01,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:01,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:01,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:01,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:01,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 208 transitions, 2229 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:01,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:01,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:01,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:01,643 INFO L124 PetriNetUnfolderBase]: 568/1012 cut-off events. [2024-06-28 03:41:01,644 INFO L125 PetriNetUnfolderBase]: For 70345/70345 co-relation queries the response was YES. [2024-06-28 03:41:01,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6997 conditions, 1012 events. 568/1012 cut-off events. For 70345/70345 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5047 event pairs, 140 based on Foata normal form. 1/1013 useless extension candidates. Maximal degree in co-relation 6886. Up to 973 conditions per place. [2024-06-28 03:41:01,653 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 199 selfloop transitions, 21 changer transitions 0/222 dead transitions. [2024-06-28 03:41:01,653 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 256 places, 222 transitions, 2711 flow [2024-06-28 03:41:01,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:01,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:01,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-28 03:41:01,654 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-28 03:41:01,654 INFO L175 Difference]: Start difference. First operand has 246 places, 208 transitions, 2229 flow. Second operand 11 states and 107 transitions. [2024-06-28 03:41:01,654 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 256 places, 222 transitions, 2711 flow [2024-06-28 03:41:01,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 222 transitions, 2578 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:01,848 INFO L231 Difference]: Finished difference. Result has 248 places, 209 transitions, 2155 flow [2024-06-28 03:41:01,848 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2097, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2155, PETRI_PLACES=248, PETRI_TRANSITIONS=209} [2024-06-28 03:41:01,848 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 218 predicate places. [2024-06-28 03:41:01,848 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 209 transitions, 2155 flow [2024-06-28 03:41:01,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:01,848 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:01,848 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:01,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:41:01,849 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:01,849 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:01,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1688134868, now seen corresponding path program 9 times [2024-06-28 03:41:01,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:01,849 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793358023] [2024-06-28 03:41:01,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:01,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:02,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:02,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:02,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793358023] [2024-06-28 03:41:02,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793358023] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:02,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:02,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:02,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910400185] [2024-06-28 03:41:02,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:02,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:02,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:02,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:02,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:02,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:02,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 209 transitions, 2155 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:02,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:02,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:02,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:03,169 INFO L124 PetriNetUnfolderBase]: 572/1020 cut-off events. [2024-06-28 03:41:03,169 INFO L125 PetriNetUnfolderBase]: For 74547/74547 co-relation queries the response was YES. [2024-06-28 03:41:03,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6983 conditions, 1020 events. 572/1020 cut-off events. For 74547/74547 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5089 event pairs, 88 based on Foata normal form. 2/1022 useless extension candidates. Maximal degree in co-relation 6871. Up to 889 conditions per place. [2024-06-28 03:41:03,178 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 182 selfloop transitions, 42 changer transitions 0/226 dead transitions. [2024-06-28 03:41:03,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 226 transitions, 2675 flow [2024-06-28 03:41:03,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:03,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:03,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:41:03,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 03:41:03,179 INFO L175 Difference]: Start difference. First operand has 248 places, 209 transitions, 2155 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:41:03,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 226 transitions, 2675 flow [2024-06-28 03:41:03,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 226 transitions, 2620 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:03,391 INFO L231 Difference]: Finished difference. Result has 249 places, 210 transitions, 2218 flow [2024-06-28 03:41:03,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2100, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2218, PETRI_PLACES=249, PETRI_TRANSITIONS=210} [2024-06-28 03:41:03,391 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 219 predicate places. [2024-06-28 03:41:03,391 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 210 transitions, 2218 flow [2024-06-28 03:41:03,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:03,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:03,392 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:03,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:41:03,392 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:03,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:03,392 INFO L85 PathProgramCache]: Analyzing trace with hash -411725902, now seen corresponding path program 10 times [2024-06-28 03:41:03,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:03,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987511269] [2024-06-28 03:41:03,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:03,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:04,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:04,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:04,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987511269] [2024-06-28 03:41:04,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987511269] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:04,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:04,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:04,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490418142] [2024-06-28 03:41:04,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:04,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:04,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:04,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:04,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:04,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:04,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 210 transitions, 2218 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:04,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:04,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:04,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:04,747 INFO L124 PetriNetUnfolderBase]: 576/1029 cut-off events. [2024-06-28 03:41:04,747 INFO L125 PetriNetUnfolderBase]: For 77266/77266 co-relation queries the response was YES. [2024-06-28 03:41:04,752 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7134 conditions, 1029 events. 576/1029 cut-off events. For 77266/77266 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5164 event pairs, 90 based on Foata normal form. 2/1031 useless extension candidates. Maximal degree in co-relation 7021. Up to 877 conditions per place. [2024-06-28 03:41:04,754 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 181 selfloop transitions, 44 changer transitions 0/227 dead transitions. [2024-06-28 03:41:04,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 227 transitions, 2740 flow [2024-06-28 03:41:04,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:04,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:04,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:41:04,757 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 03:41:04,757 INFO L175 Difference]: Start difference. First operand has 249 places, 210 transitions, 2218 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:41:04,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 227 transitions, 2740 flow [2024-06-28 03:41:04,984 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 227 transitions, 2632 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:04,987 INFO L231 Difference]: Finished difference. Result has 251 places, 211 transitions, 2234 flow [2024-06-28 03:41:04,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2110, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2234, PETRI_PLACES=251, PETRI_TRANSITIONS=211} [2024-06-28 03:41:04,987 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 221 predicate places. [2024-06-28 03:41:04,987 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 211 transitions, 2234 flow [2024-06-28 03:41:04,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:04,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:04,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:04,988 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:41:04,988 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:04,988 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:04,988 INFO L85 PathProgramCache]: Analyzing trace with hash -411572080, now seen corresponding path program 6 times [2024-06-28 03:41:04,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:04,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276174746] [2024-06-28 03:41:04,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:04,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:05,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:05,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:05,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276174746] [2024-06-28 03:41:05,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276174746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:05,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:05,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:05,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442099695] [2024-06-28 03:41:05,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:05,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:05,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:05,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:05,779 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:05,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:05,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 211 transitions, 2234 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:05,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:05,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:05,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:06,127 INFO L124 PetriNetUnfolderBase]: 577/1031 cut-off events. [2024-06-28 03:41:06,127 INFO L125 PetriNetUnfolderBase]: For 76740/76740 co-relation queries the response was YES. [2024-06-28 03:41:06,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7095 conditions, 1031 events. 577/1031 cut-off events. For 76740/76740 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5178 event pairs, 100 based on Foata normal form. 2/1033 useless extension candidates. Maximal degree in co-relation 6981. Up to 760 conditions per place. [2024-06-28 03:41:06,137 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 171 selfloop transitions, 60 changer transitions 0/233 dead transitions. [2024-06-28 03:41:06,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 233 transitions, 2955 flow [2024-06-28 03:41:06,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:06,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:06,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:41:06,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 03:41:06,138 INFO L175 Difference]: Start difference. First operand has 251 places, 211 transitions, 2234 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:41:06,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 233 transitions, 2955 flow [2024-06-28 03:41:06,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 233 transitions, 2841 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:06,345 INFO L231 Difference]: Finished difference. Result has 254 places, 213 transitions, 2292 flow [2024-06-28 03:41:06,345 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2120, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2292, PETRI_PLACES=254, PETRI_TRANSITIONS=213} [2024-06-28 03:41:06,345 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 224 predicate places. [2024-06-28 03:41:06,345 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 213 transitions, 2292 flow [2024-06-28 03:41:06,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:06,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:06,346 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:06,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:41:06,346 INFO L420 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:06,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:06,346 INFO L85 PathProgramCache]: Analyzing trace with hash -950875804, now seen corresponding path program 11 times [2024-06-28 03:41:06,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:06,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131304719] [2024-06-28 03:41:06,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:06,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:07,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:07,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:07,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131304719] [2024-06-28 03:41:07,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131304719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:07,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:07,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:07,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910245320] [2024-06-28 03:41:07,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:07,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:07,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:07,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:07,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:07,325 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:07,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 213 transitions, 2292 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:07,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:07,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:07,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:07,661 INFO L124 PetriNetUnfolderBase]: 581/1038 cut-off events. [2024-06-28 03:41:07,661 INFO L125 PetriNetUnfolderBase]: For 78652/78652 co-relation queries the response was YES. [2024-06-28 03:41:07,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7209 conditions, 1038 events. 581/1038 cut-off events. For 78652/78652 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5234 event pairs, 109 based on Foata normal form. 2/1040 useless extension candidates. Maximal degree in co-relation 7094. Up to 953 conditions per place. [2024-06-28 03:41:07,670 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 202 selfloop transitions, 24 changer transitions 0/228 dead transitions. [2024-06-28 03:41:07,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 228 transitions, 2812 flow [2024-06-28 03:41:07,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:07,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:07,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 03:41:07,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-28 03:41:07,671 INFO L175 Difference]: Start difference. First operand has 254 places, 213 transitions, 2292 flow. Second operand 10 states and 103 transitions. [2024-06-28 03:41:07,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 228 transitions, 2812 flow [2024-06-28 03:41:07,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 228 transitions, 2690 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:07,917 INFO L231 Difference]: Finished difference. Result has 256 places, 214 transitions, 2256 flow [2024-06-28 03:41:07,917 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2170, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2256, PETRI_PLACES=256, PETRI_TRANSITIONS=214} [2024-06-28 03:41:07,917 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-28 03:41:07,918 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 214 transitions, 2256 flow [2024-06-28 03:41:07,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:07,918 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:07,918 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:07,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:41:07,918 INFO L420 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:07,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:07,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1791299480, now seen corresponding path program 12 times [2024-06-28 03:41:07,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:07,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689192748] [2024-06-28 03:41:07,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:07,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:07,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:08,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:08,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:08,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689192748] [2024-06-28 03:41:08,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1689192748] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:08,763 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:08,763 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:08,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303353670] [2024-06-28 03:41:08,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:08,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:08,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:08,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:08,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:08,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:08,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 214 transitions, 2256 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:08,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:08,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:08,841 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:09,180 INFO L124 PetriNetUnfolderBase]: 592/1059 cut-off events. [2024-06-28 03:41:09,180 INFO L125 PetriNetUnfolderBase]: For 87025/87025 co-relation queries the response was YES. [2024-06-28 03:41:09,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7485 conditions, 1059 events. 592/1059 cut-off events. For 87025/87025 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5367 event pairs, 115 based on Foata normal form. 2/1061 useless extension candidates. Maximal degree in co-relation 7369. Up to 865 conditions per place. [2024-06-28 03:41:09,189 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 183 selfloop transitions, 47 changer transitions 0/232 dead transitions. [2024-06-28 03:41:09,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 232 transitions, 2972 flow [2024-06-28 03:41:09,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:41:09,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:41:09,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:41:09,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 03:41:09,190 INFO L175 Difference]: Start difference. First operand has 256 places, 214 transitions, 2256 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:41:09,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 232 transitions, 2972 flow [2024-06-28 03:41:09,421 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 254 places, 232 transitions, 2879 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:09,423 INFO L231 Difference]: Finished difference. Result has 255 places, 216 transitions, 2335 flow [2024-06-28 03:41:09,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2163, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2335, PETRI_PLACES=255, PETRI_TRANSITIONS=216} [2024-06-28 03:41:09,424 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 225 predicate places. [2024-06-28 03:41:09,424 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 216 transitions, 2335 flow [2024-06-28 03:41:09,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:09,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:09,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:09,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:41:09,425 INFO L420 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:09,425 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:09,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1725350265, now seen corresponding path program 3 times [2024-06-28 03:41:09,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:09,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526122253] [2024-06-28 03:41:09,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:09,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:09,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:10,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:10,250 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:10,250 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526122253] [2024-06-28 03:41:10,250 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526122253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:10,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:10,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:10,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793019726] [2024-06-28 03:41:10,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:10,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:10,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:10,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:10,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:10,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:10,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 216 transitions, 2335 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:10,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:10,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:10,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:10,629 INFO L124 PetriNetUnfolderBase]: 590/1056 cut-off events. [2024-06-28 03:41:10,629 INFO L125 PetriNetUnfolderBase]: For 83566/83566 co-relation queries the response was YES. [2024-06-28 03:41:10,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7403 conditions, 1056 events. 590/1056 cut-off events. For 83566/83566 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5363 event pairs, 115 based on Foata normal form. 1/1057 useless extension candidates. Maximal degree in co-relation 7291. Up to 904 conditions per place. [2024-06-28 03:41:10,639 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 173 selfloop transitions, 56 changer transitions 0/231 dead transitions. [2024-06-28 03:41:10,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 231 transitions, 2835 flow [2024-06-28 03:41:10,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:41:10,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:41:10,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:41:10,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 03:41:10,640 INFO L175 Difference]: Start difference. First operand has 255 places, 216 transitions, 2335 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:41:10,640 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 231 transitions, 2835 flow [2024-06-28 03:41:10,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 231 transitions, 2713 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:10,891 INFO L231 Difference]: Finished difference. Result has 257 places, 216 transitions, 2345 flow [2024-06-28 03:41:10,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2213, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2345, PETRI_PLACES=257, PETRI_TRANSITIONS=216} [2024-06-28 03:41:10,892 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-28 03:41:10,892 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 216 transitions, 2345 flow [2024-06-28 03:41:10,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:10,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:10,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:10,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:41:10,892 INFO L420 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:10,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:10,893 INFO L85 PathProgramCache]: Analyzing trace with hash -948998134, now seen corresponding path program 13 times [2024-06-28 03:41:10,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:10,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1178863032] [2024-06-28 03:41:10,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:10,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:11,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:11,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:11,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1178863032] [2024-06-28 03:41:11,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1178863032] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:11,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:11,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:11,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658000770] [2024-06-28 03:41:11,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:11,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:11,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:11,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:11,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:11,879 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:11,879 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 216 transitions, 2345 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:11,879 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:11,879 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:11,879 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:12,208 INFO L124 PetriNetUnfolderBase]: 587/1051 cut-off events. [2024-06-28 03:41:12,208 INFO L125 PetriNetUnfolderBase]: For 77988/77988 co-relation queries the response was YES. [2024-06-28 03:41:12,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7204 conditions, 1051 events. 587/1051 cut-off events. For 77988/77988 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 5349 event pairs, 116 based on Foata normal form. 2/1053 useless extension candidates. Maximal degree in co-relation 7092. Up to 908 conditions per place. [2024-06-28 03:41:12,217 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 182 selfloop transitions, 47 changer transitions 0/231 dead transitions. [2024-06-28 03:41:12,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 231 transitions, 2843 flow [2024-06-28 03:41:12,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:41:12,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:41:12,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:41:12,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 03:41:12,218 INFO L175 Difference]: Start difference. First operand has 257 places, 216 transitions, 2345 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:41:12,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 231 transitions, 2843 flow [2024-06-28 03:41:12,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 231 transitions, 2665 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:12,437 INFO L231 Difference]: Finished difference. Result has 256 places, 216 transitions, 2272 flow [2024-06-28 03:41:12,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2167, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2272, PETRI_PLACES=256, PETRI_TRANSITIONS=216} [2024-06-28 03:41:12,437 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-28 03:41:12,437 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 216 transitions, 2272 flow [2024-06-28 03:41:12,437 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:12,437 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:12,437 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:12,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:41:12,438 INFO L420 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:12,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:12,438 INFO L85 PathProgramCache]: Analyzing trace with hash -862156222, now seen corresponding path program 7 times [2024-06-28 03:41:12,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:12,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927074030] [2024-06-28 03:41:12,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:12,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:12,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:13,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:13,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:13,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927074030] [2024-06-28 03:41:13,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927074030] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:13,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:13,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:13,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1086846017] [2024-06-28 03:41:13,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:13,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:13,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:13,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:13,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:13,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:13,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 216 transitions, 2272 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:13,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:13,195 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:13,195 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:13,495 INFO L124 PetriNetUnfolderBase]: 593/1061 cut-off events. [2024-06-28 03:41:13,495 INFO L125 PetriNetUnfolderBase]: For 75762/75762 co-relation queries the response was YES. [2024-06-28 03:41:13,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7169 conditions, 1061 events. 593/1061 cut-off events. For 75762/75762 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5393 event pairs, 92 based on Foata normal form. 2/1063 useless extension candidates. Maximal degree in co-relation 7058. Up to 912 conditions per place. [2024-06-28 03:41:13,508 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 185 selfloop transitions, 48 changer transitions 0/235 dead transitions. [2024-06-28 03:41:13,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 265 places, 235 transitions, 2834 flow [2024-06-28 03:41:13,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:13,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:13,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:41:13,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-28 03:41:13,510 INFO L175 Difference]: Start difference. First operand has 256 places, 216 transitions, 2272 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:41:13,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 265 places, 235 transitions, 2834 flow [2024-06-28 03:41:13,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 235 transitions, 2721 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:13,715 INFO L231 Difference]: Finished difference. Result has 256 places, 218 transitions, 2318 flow [2024-06-28 03:41:13,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2159, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2318, PETRI_PLACES=256, PETRI_TRANSITIONS=218} [2024-06-28 03:41:13,715 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 226 predicate places. [2024-06-28 03:41:13,715 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 218 transitions, 2318 flow [2024-06-28 03:41:13,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:13,715 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:13,715 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:13,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:41:13,716 INFO L420 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:13,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:13,716 INFO L85 PathProgramCache]: Analyzing trace with hash 416282900, now seen corresponding path program 14 times [2024-06-28 03:41:13,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:13,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790474917] [2024-06-28 03:41:13,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:13,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:13,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:14,640 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:14,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:14,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790474917] [2024-06-28 03:41:14,641 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790474917] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:14,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:14,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:14,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289651606] [2024-06-28 03:41:14,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:14,641 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:14,641 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:14,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:14,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:14,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:14,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 218 transitions, 2318 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:14,711 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:14,711 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:14,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:15,033 INFO L124 PetriNetUnfolderBase]: 597/1069 cut-off events. [2024-06-28 03:41:15,033 INFO L125 PetriNetUnfolderBase]: For 74135/74135 co-relation queries the response was YES. [2024-06-28 03:41:15,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7254 conditions, 1069 events. 597/1069 cut-off events. For 74135/74135 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5445 event pairs, 78 based on Foata normal form. 2/1071 useless extension candidates. Maximal degree in co-relation 7144. Up to 886 conditions per place. [2024-06-28 03:41:15,042 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 170 selfloop transitions, 61 changer transitions 0/233 dead transitions. [2024-06-28 03:41:15,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 233 transitions, 2850 flow [2024-06-28 03:41:15,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:41:15,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:41:15,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:41:15,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 03:41:15,043 INFO L175 Difference]: Start difference. First operand has 256 places, 218 transitions, 2318 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:41:15,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 233 transitions, 2850 flow [2024-06-28 03:41:15,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 233 transitions, 2729 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:15,232 INFO L231 Difference]: Finished difference. Result has 257 places, 219 transitions, 2359 flow [2024-06-28 03:41:15,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2359, PETRI_PLACES=257, PETRI_TRANSITIONS=219} [2024-06-28 03:41:15,232 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-28 03:41:15,232 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 219 transitions, 2359 flow [2024-06-28 03:41:15,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:15,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:15,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:15,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:41:15,233 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:15,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:15,233 INFO L85 PathProgramCache]: Analyzing trace with hash 416490662, now seen corresponding path program 8 times [2024-06-28 03:41:15,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:15,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [582919179] [2024-06-28 03:41:15,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:15,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:15,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:16,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:16,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:16,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [582919179] [2024-06-28 03:41:16,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [582919179] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:16,083 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:16,083 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:16,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906766360] [2024-06-28 03:41:16,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:16,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:16,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:16,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:16,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:16,156 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:16,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 219 transitions, 2359 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:16,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:16,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:16,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:16,456 INFO L124 PetriNetUnfolderBase]: 648/1151 cut-off events. [2024-06-28 03:41:16,456 INFO L125 PetriNetUnfolderBase]: For 100451/100451 co-relation queries the response was YES. [2024-06-28 03:41:16,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8535 conditions, 1151 events. 648/1151 cut-off events. For 100451/100451 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5881 event pairs, 111 based on Foata normal form. 2/1153 useless extension candidates. Maximal degree in co-relation 8424. Up to 924 conditions per place. [2024-06-28 03:41:16,471 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 190 selfloop transitions, 53 changer transitions 0/245 dead transitions. [2024-06-28 03:41:16,472 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 267 places, 245 transitions, 3375 flow [2024-06-28 03:41:16,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:16,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:16,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 03:41:16,473 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 03:41:16,473 INFO L175 Difference]: Start difference. First operand has 257 places, 219 transitions, 2359 flow. Second operand 11 states and 124 transitions. [2024-06-28 03:41:16,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 267 places, 245 transitions, 3375 flow [2024-06-28 03:41:16,735 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 245 transitions, 3221 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:16,738 INFO L231 Difference]: Finished difference. Result has 263 places, 227 transitions, 2525 flow [2024-06-28 03:41:16,738 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2209, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2525, PETRI_PLACES=263, PETRI_TRANSITIONS=227} [2024-06-28 03:41:16,739 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 233 predicate places. [2024-06-28 03:41:16,739 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 227 transitions, 2525 flow [2024-06-28 03:41:16,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:16,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:16,739 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:16,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-28 03:41:16,739 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:16,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:16,739 INFO L85 PathProgramCache]: Analyzing trace with hash 416498102, now seen corresponding path program 9 times [2024-06-28 03:41:16,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:16,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747734856] [2024-06-28 03:41:16,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:16,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:16,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:17,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:17,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:17,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747734856] [2024-06-28 03:41:17,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747734856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:17,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:17,540 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:17,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696337909] [2024-06-28 03:41:17,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:17,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:17,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:17,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:17,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:17,610 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:17,610 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 227 transitions, 2525 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:17,610 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:17,610 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:17,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:17,924 INFO L124 PetriNetUnfolderBase]: 642/1143 cut-off events. [2024-06-28 03:41:17,924 INFO L125 PetriNetUnfolderBase]: For 95174/95174 co-relation queries the response was YES. [2024-06-28 03:41:17,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8262 conditions, 1143 events. 642/1143 cut-off events. For 95174/95174 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 5866 event pairs, 109 based on Foata normal form. 4/1147 useless extension candidates. Maximal degree in co-relation 8148. Up to 923 conditions per place. [2024-06-28 03:41:17,932 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 186 selfloop transitions, 56 changer transitions 0/244 dead transitions. [2024-06-28 03:41:17,932 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 244 transitions, 3225 flow [2024-06-28 03:41:17,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:17,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:17,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:41:17,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 03:41:17,934 INFO L175 Difference]: Start difference. First operand has 263 places, 227 transitions, 2525 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:41:17,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 244 transitions, 3225 flow [2024-06-28 03:41:18,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 244 transitions, 3066 flow, removed 55 selfloop flow, removed 6 redundant places. [2024-06-28 03:41:18,203 INFO L231 Difference]: Finished difference. Result has 268 places, 227 transitions, 2485 flow [2024-06-28 03:41:18,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2366, PETRI_DIFFERENCE_MINUEND_PLACES=257, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2485, PETRI_PLACES=268, PETRI_TRANSITIONS=227} [2024-06-28 03:41:18,203 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-06-28 03:41:18,204 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 227 transitions, 2485 flow [2024-06-28 03:41:18,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:18,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:18,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:18,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-28 03:41:18,204 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:18,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:18,205 INFO L85 PathProgramCache]: Analyzing trace with hash -1577734868, now seen corresponding path program 10 times [2024-06-28 03:41:18,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:18,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279774882] [2024-06-28 03:41:18,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:18,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:18,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:18,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:18,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:18,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279774882] [2024-06-28 03:41:18,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279774882] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:18,953 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:18,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:18,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145969387] [2024-06-28 03:41:18,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:18,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:18,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:18,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:18,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:19,050 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:19,050 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 227 transitions, 2485 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:19,050 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:19,050 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:19,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:19,366 INFO L124 PetriNetUnfolderBase]: 648/1154 cut-off events. [2024-06-28 03:41:19,366 INFO L125 PetriNetUnfolderBase]: For 91956/91956 co-relation queries the response was YES. [2024-06-28 03:41:19,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8318 conditions, 1154 events. 648/1154 cut-off events. For 91956/91956 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5944 event pairs, 82 based on Foata normal form. 2/1156 useless extension candidates. Maximal degree in co-relation 8202. Up to 714 conditions per place. [2024-06-28 03:41:19,376 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 153 selfloop transitions, 92 changer transitions 0/247 dead transitions. [2024-06-28 03:41:19,377 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 247 transitions, 3252 flow [2024-06-28 03:41:19,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:19,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:19,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-28 03:41:19,377 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36774193548387096 [2024-06-28 03:41:19,378 INFO L175 Difference]: Start difference. First operand has 268 places, 227 transitions, 2485 flow. Second operand 10 states and 114 transitions. [2024-06-28 03:41:19,378 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 247 transitions, 3252 flow [2024-06-28 03:41:19,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 247 transitions, 3141 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:19,616 INFO L231 Difference]: Finished difference. Result has 269 places, 229 transitions, 2625 flow [2024-06-28 03:41:19,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2377, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2625, PETRI_PLACES=269, PETRI_TRANSITIONS=229} [2024-06-28 03:41:19,616 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 239 predicate places. [2024-06-28 03:41:19,617 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 229 transitions, 2625 flow [2024-06-28 03:41:19,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:19,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:19,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:19,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-28 03:41:19,617 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:19,618 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:19,618 INFO L85 PathProgramCache]: Analyzing trace with hash 1875144331, now seen corresponding path program 2 times [2024-06-28 03:41:19,618 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:19,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461911407] [2024-06-28 03:41:19,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:19,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:20,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:20,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:20,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461911407] [2024-06-28 03:41:20,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461911407] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:20,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:20,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:20,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812581787] [2024-06-28 03:41:20,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:20,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:20,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:20,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:20,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:20,639 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:20,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 229 transitions, 2625 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:20,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:20,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:20,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:21,000 INFO L124 PetriNetUnfolderBase]: 639/1141 cut-off events. [2024-06-28 03:41:21,001 INFO L125 PetriNetUnfolderBase]: For 88808/88808 co-relation queries the response was YES. [2024-06-28 03:41:21,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8051 conditions, 1141 events. 639/1141 cut-off events. For 88808/88808 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 5878 event pairs, 78 based on Foata normal form. 5/1146 useless extension candidates. Maximal degree in co-relation 7934. Up to 721 conditions per place. [2024-06-28 03:41:21,013 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 134 selfloop transitions, 115 changer transitions 0/251 dead transitions. [2024-06-28 03:41:21,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 251 transitions, 3427 flow [2024-06-28 03:41:21,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:21,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:21,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 03:41:21,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 03:41:21,015 INFO L175 Difference]: Start difference. First operand has 269 places, 229 transitions, 2625 flow. Second operand 10 states and 111 transitions. [2024-06-28 03:41:21,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 251 transitions, 3427 flow [2024-06-28 03:41:21,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 271 places, 251 transitions, 3240 flow, removed 26 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:21,383 INFO L231 Difference]: Finished difference. Result has 273 places, 234 transitions, 2843 flow [2024-06-28 03:41:21,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2448, PETRI_DIFFERENCE_MINUEND_PLACES=262, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2843, PETRI_PLACES=273, PETRI_TRANSITIONS=234} [2024-06-28 03:41:21,384 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 243 predicate places. [2024-06-28 03:41:21,384 INFO L495 AbstractCegarLoop]: Abstraction has has 273 places, 234 transitions, 2843 flow [2024-06-28 03:41:21,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:21,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:21,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:21,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-28 03:41:21,385 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:21,385 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:21,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1583247350, now seen corresponding path program 15 times [2024-06-28 03:41:21,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:21,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387743239] [2024-06-28 03:41:21,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:21,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:22,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:22,271 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:22,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387743239] [2024-06-28 03:41:22,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387743239] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:22,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:22,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:22,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885027918] [2024-06-28 03:41:22,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:22,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:22,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:22,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:22,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:22,347 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:22,347 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 273 places, 234 transitions, 2843 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:22,347 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:22,347 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:22,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:22,730 INFO L124 PetriNetUnfolderBase]: 643/1149 cut-off events. [2024-06-28 03:41:22,730 INFO L125 PetriNetUnfolderBase]: For 82098/82098 co-relation queries the response was YES. [2024-06-28 03:41:22,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8299 conditions, 1149 events. 643/1149 cut-off events. For 82098/82098 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 5927 event pairs, 91 based on Foata normal form. 2/1151 useless extension candidates. Maximal degree in co-relation 8180. Up to 965 conditions per place. [2024-06-28 03:41:22,742 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 192 selfloop transitions, 55 changer transitions 0/249 dead transitions. [2024-06-28 03:41:22,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 249 transitions, 3407 flow [2024-06-28 03:41:22,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:41:22,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:41:22,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:41:22,743 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 03:41:22,743 INFO L175 Difference]: Start difference. First operand has 273 places, 234 transitions, 2843 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:41:22,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 249 transitions, 3407 flow [2024-06-28 03:41:23,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 249 transitions, 3170 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:23,006 INFO L231 Difference]: Finished difference. Result has 275 places, 235 transitions, 2756 flow [2024-06-28 03:41:23,006 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2606, PETRI_DIFFERENCE_MINUEND_PLACES=266, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=234, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2756, PETRI_PLACES=275, PETRI_TRANSITIONS=235} [2024-06-28 03:41:23,006 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 245 predicate places. [2024-06-28 03:41:23,006 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 235 transitions, 2756 flow [2024-06-28 03:41:23,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:23,007 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:23,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:23,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-28 03:41:23,007 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:23,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:23,008 INFO L85 PathProgramCache]: Analyzing trace with hash 410772650, now seen corresponding path program 16 times [2024-06-28 03:41:23,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:23,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007378921] [2024-06-28 03:41:23,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:23,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:23,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:23,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:23,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:23,982 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007378921] [2024-06-28 03:41:23,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007378921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:23,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:23,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:23,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [544617278] [2024-06-28 03:41:23,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:23,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:23,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:23,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:23,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:24,070 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:24,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 235 transitions, 2756 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:24,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:24,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:24,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:24,386 INFO L124 PetriNetUnfolderBase]: 647/1157 cut-off events. [2024-06-28 03:41:24,386 INFO L125 PetriNetUnfolderBase]: For 82486/82486 co-relation queries the response was YES. [2024-06-28 03:41:24,394 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8217 conditions, 1157 events. 647/1157 cut-off events. For 82486/82486 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6010 event pairs, 91 based on Foata normal form. 2/1159 useless extension candidates. Maximal degree in co-relation 8097. Up to 933 conditions per place. [2024-06-28 03:41:24,397 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 189 selfloop transitions, 59 changer transitions 0/250 dead transitions. [2024-06-28 03:41:24,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 283 places, 250 transitions, 3322 flow [2024-06-28 03:41:24,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:41:24,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:41:24,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:41:24,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 03:41:24,398 INFO L175 Difference]: Start difference. First operand has 275 places, 235 transitions, 2756 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:41:24,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 283 places, 250 transitions, 3322 flow [2024-06-28 03:41:24,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 276 places, 250 transitions, 3182 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:24,653 INFO L231 Difference]: Finished difference. Result has 277 places, 236 transitions, 2776 flow [2024-06-28 03:41:24,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2618, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2776, PETRI_PLACES=277, PETRI_TRANSITIONS=236} [2024-06-28 03:41:24,654 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 247 predicate places. [2024-06-28 03:41:24,654 INFO L495 AbstractCegarLoop]: Abstraction has has 277 places, 236 transitions, 2776 flow [2024-06-28 03:41:24,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:24,654 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:24,654 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:24,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-28 03:41:24,654 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:24,656 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:24,656 INFO L85 PathProgramCache]: Analyzing trace with hash -1583097248, now seen corresponding path program 11 times [2024-06-28 03:41:24,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:24,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [896166279] [2024-06-28 03:41:24,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:24,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:25,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:25,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:25,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [896166279] [2024-06-28 03:41:25,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [896166279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:25,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:25,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:25,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1786536985] [2024-06-28 03:41:25,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:25,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:25,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:25,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:25,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:25,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:25,503 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 277 places, 236 transitions, 2776 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:25,503 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:25,503 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:25,503 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:25,831 INFO L124 PetriNetUnfolderBase]: 647/1157 cut-off events. [2024-06-28 03:41:25,831 INFO L125 PetriNetUnfolderBase]: For 79562/79562 co-relation queries the response was YES. [2024-06-28 03:41:25,839 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8149 conditions, 1157 events. 647/1157 cut-off events. For 79562/79562 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6008 event pairs, 110 based on Foata normal form. 2/1159 useless extension candidates. Maximal degree in co-relation 8028. Up to 726 conditions per place. [2024-06-28 03:41:25,842 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 160 selfloop transitions, 93 changer transitions 0/255 dead transitions. [2024-06-28 03:41:25,842 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 255 transitions, 3541 flow [2024-06-28 03:41:25,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:25,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:25,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 03:41:25,843 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:41:25,843 INFO L175 Difference]: Start difference. First operand has 277 places, 236 transitions, 2776 flow. Second operand 10 states and 115 transitions. [2024-06-28 03:41:25,843 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 255 transitions, 3541 flow [2024-06-28 03:41:26,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 255 transitions, 3393 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:26,122 INFO L231 Difference]: Finished difference. Result has 280 places, 238 transitions, 2887 flow [2024-06-28 03:41:26,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2630, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2887, PETRI_PLACES=280, PETRI_TRANSITIONS=238} [2024-06-28 03:41:26,123 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 250 predicate places. [2024-06-28 03:41:26,123 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 238 transitions, 2887 flow [2024-06-28 03:41:26,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:26,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:26,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:26,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-28 03:41:26,123 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:26,124 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:26,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1118697136, now seen corresponding path program 17 times [2024-06-28 03:41:26,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:26,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190683263] [2024-06-28 03:41:26,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:26,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:26,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:27,107 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:27,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:27,108 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190683263] [2024-06-28 03:41:27,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190683263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:27,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:27,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:27,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981786210] [2024-06-28 03:41:27,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:27,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:27,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:27,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:27,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:27,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:27,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 238 transitions, 2887 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:27,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:27,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:27,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:27,453 INFO L124 PetriNetUnfolderBase]: 651/1164 cut-off events. [2024-06-28 03:41:27,453 INFO L125 PetriNetUnfolderBase]: For 79940/79940 co-relation queries the response was YES. [2024-06-28 03:41:27,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8271 conditions, 1164 events. 651/1164 cut-off events. For 79940/79940 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 6037 event pairs, 80 based on Foata normal form. 2/1166 useless extension candidates. Maximal degree in co-relation 8149. Up to 946 conditions per place. [2024-06-28 03:41:27,463 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 178 selfloop transitions, 71 changer transitions 0/251 dead transitions. [2024-06-28 03:41:27,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 251 transitions, 3449 flow [2024-06-28 03:41:27,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:41:27,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:41:27,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:41:27,464 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34767025089605735 [2024-06-28 03:41:27,464 INFO L175 Difference]: Start difference. First operand has 280 places, 238 transitions, 2887 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:41:27,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 251 transitions, 3449 flow [2024-06-28 03:41:27,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 251 transitions, 3279 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:27,779 INFO L231 Difference]: Finished difference. Result has 282 places, 239 transitions, 2897 flow [2024-06-28 03:41:27,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2717, PETRI_DIFFERENCE_MINUEND_PLACES=273, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2897, PETRI_PLACES=282, PETRI_TRANSITIONS=239} [2024-06-28 03:41:27,780 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 252 predicate places. [2024-06-28 03:41:27,780 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 239 transitions, 2897 flow [2024-06-28 03:41:27,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:27,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:27,781 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:27,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-28 03:41:27,781 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:27,781 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:27,781 INFO L85 PathProgramCache]: Analyzing trace with hash 1599188518, now seen corresponding path program 12 times [2024-06-28 03:41:27,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:27,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1723470091] [2024-06-28 03:41:27,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:27,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:27,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:28,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:28,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:28,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1723470091] [2024-06-28 03:41:28,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1723470091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:28,634 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:28,634 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:28,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737683939] [2024-06-28 03:41:28,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:28,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:28,635 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:28,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:28,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:28,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:28,724 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 239 transitions, 2897 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:28,724 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:28,724 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:28,724 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:29,053 INFO L124 PetriNetUnfolderBase]: 692/1230 cut-off events. [2024-06-28 03:41:29,053 INFO L125 PetriNetUnfolderBase]: For 102253/102253 co-relation queries the response was YES. [2024-06-28 03:41:29,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9293 conditions, 1230 events. 692/1230 cut-off events. For 102253/102253 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6418 event pairs, 96 based on Foata normal form. 2/1232 useless extension candidates. Maximal degree in co-relation 9170. Up to 580 conditions per place. [2024-06-28 03:41:29,063 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 154 selfloop transitions, 113 changer transitions 0/269 dead transitions. [2024-06-28 03:41:29,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 291 places, 269 transitions, 4223 flow [2024-06-28 03:41:29,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:29,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:29,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 03:41:29,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-28 03:41:29,064 INFO L175 Difference]: Start difference. First operand has 282 places, 239 transitions, 2897 flow. Second operand 10 states and 121 transitions. [2024-06-28 03:41:29,065 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 291 places, 269 transitions, 4223 flow [2024-06-28 03:41:29,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 269 transitions, 4053 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:29,356 INFO L231 Difference]: Finished difference. Result has 287 places, 249 transitions, 3233 flow [2024-06-28 03:41:29,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2727, PETRI_DIFFERENCE_MINUEND_PLACES=275, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3233, PETRI_PLACES=287, PETRI_TRANSITIONS=249} [2024-06-28 03:41:29,357 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 257 predicate places. [2024-06-28 03:41:29,357 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 249 transitions, 3233 flow [2024-06-28 03:41:29,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:29,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:29,357 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:29,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-28 03:41:29,357 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:29,358 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:29,358 INFO L85 PathProgramCache]: Analyzing trace with hash -1170578026, now seen corresponding path program 13 times [2024-06-28 03:41:29,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:29,358 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717819435] [2024-06-28 03:41:29,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:29,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:29,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:30,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:30,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:30,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717819435] [2024-06-28 03:41:30,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717819435] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:30,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:30,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:30,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754464049] [2024-06-28 03:41:30,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:30,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:30,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:30,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:30,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:30,267 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:30,267 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 249 transitions, 3233 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:30,267 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:30,267 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:30,267 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:30,574 INFO L124 PetriNetUnfolderBase]: 718/1272 cut-off events. [2024-06-28 03:41:30,574 INFO L125 PetriNetUnfolderBase]: For 118028/118028 co-relation queries the response was YES. [2024-06-28 03:41:30,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10192 conditions, 1272 events. 718/1272 cut-off events. For 118028/118028 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6659 event pairs, 128 based on Foata normal form. 2/1274 useless extension candidates. Maximal degree in co-relation 10066. Up to 594 conditions per place. [2024-06-28 03:41:30,587 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 169 selfloop transitions, 104 changer transitions 0/275 dead transitions. [2024-06-28 03:41:30,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 296 places, 275 transitions, 4645 flow [2024-06-28 03:41:30,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:30,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:30,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-28 03:41:30,588 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4032258064516129 [2024-06-28 03:41:30,588 INFO L175 Difference]: Start difference. First operand has 287 places, 249 transitions, 3233 flow. Second operand 10 states and 125 transitions. [2024-06-28 03:41:30,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 296 places, 275 transitions, 4645 flow [2024-06-28 03:41:30,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 292 places, 275 transitions, 4503 flow, removed 46 selfloop flow, removed 4 redundant places. [2024-06-28 03:41:30,902 INFO L231 Difference]: Finished difference. Result has 295 places, 255 transitions, 3498 flow [2024-06-28 03:41:30,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3091, PETRI_DIFFERENCE_MINUEND_PLACES=283, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3498, PETRI_PLACES=295, PETRI_TRANSITIONS=255} [2024-06-28 03:41:30,903 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 265 predicate places. [2024-06-28 03:41:30,903 INFO L495 AbstractCegarLoop]: Abstraction has has 295 places, 255 transitions, 3498 flow [2024-06-28 03:41:30,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:30,903 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:30,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:30,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-28 03:41:30,903 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:30,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:30,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1599398047, now seen corresponding path program 3 times [2024-06-28 03:41:30,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:30,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267514934] [2024-06-28 03:41:30,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:30,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:32,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:32,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:32,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267514934] [2024-06-28 03:41:32,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267514934] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:32,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:32,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:32,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45664818] [2024-06-28 03:41:32,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:32,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:32,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:32,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:32,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:32,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:32,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 295 places, 255 transitions, 3498 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:32,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:32,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:32,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:32,453 INFO L124 PetriNetUnfolderBase]: 721/1277 cut-off events. [2024-06-28 03:41:32,454 INFO L125 PetriNetUnfolderBase]: For 119141/119141 co-relation queries the response was YES. [2024-06-28 03:41:32,463 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10427 conditions, 1277 events. 721/1277 cut-off events. For 119141/119141 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6679 event pairs, 176 based on Foata normal form. 1/1278 useless extension candidates. Maximal degree in co-relation 10297. Up to 1184 conditions per place. [2024-06-28 03:41:32,466 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 220 selfloop transitions, 44 changer transitions 0/266 dead transitions. [2024-06-28 03:41:32,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 266 transitions, 4079 flow [2024-06-28 03:41:32,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:32,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 03:41:32,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-28 03:41:32,467 INFO L175 Difference]: Start difference. First operand has 295 places, 255 transitions, 3498 flow. Second operand 10 states and 102 transitions. [2024-06-28 03:41:32,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 304 places, 266 transitions, 4079 flow [2024-06-28 03:41:32,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 266 transitions, 3650 flow, removed 49 selfloop flow, removed 9 redundant places. [2024-06-28 03:41:32,803 INFO L231 Difference]: Finished difference. Result has 296 places, 257 transitions, 3199 flow [2024-06-28 03:41:32,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3071, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3199, PETRI_PLACES=296, PETRI_TRANSITIONS=257} [2024-06-28 03:41:32,804 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 266 predicate places. [2024-06-28 03:41:32,804 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 257 transitions, 3199 flow [2024-06-28 03:41:32,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:32,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:32,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:32,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-28 03:41:32,804 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:32,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:32,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1118912338, now seen corresponding path program 14 times [2024-06-28 03:41:32,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:32,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1552112693] [2024-06-28 03:41:32,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:32,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:32,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:33,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:33,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:33,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1552112693] [2024-06-28 03:41:33,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1552112693] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:33,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:33,607 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:33,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912450374] [2024-06-28 03:41:33,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:33,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:33,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:33,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:33,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:33,682 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:33,682 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 257 transitions, 3199 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:33,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:33,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:33,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:34,011 INFO L124 PetriNetUnfolderBase]: 753/1329 cut-off events. [2024-06-28 03:41:34,011 INFO L125 PetriNetUnfolderBase]: For 140315/140315 co-relation queries the response was YES. [2024-06-28 03:41:34,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10650 conditions, 1329 events. 753/1329 cut-off events. For 140315/140315 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 7000 event pairs, 102 based on Foata normal form. 4/1333 useless extension candidates. Maximal degree in co-relation 10521. Up to 616 conditions per place. [2024-06-28 03:41:34,025 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 162 selfloop transitions, 119 changer transitions 0/283 dead transitions. [2024-06-28 03:41:34,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 305 places, 283 transitions, 4478 flow [2024-06-28 03:41:34,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:34,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:34,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-28 03:41:34,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3935483870967742 [2024-06-28 03:41:34,026 INFO L175 Difference]: Start difference. First operand has 296 places, 257 transitions, 3199 flow. Second operand 10 states and 122 transitions. [2024-06-28 03:41:34,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 305 places, 283 transitions, 4478 flow [2024-06-28 03:41:34,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 283 transitions, 4373 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:34,410 INFO L231 Difference]: Finished difference. Result has 298 places, 263 transitions, 3478 flow [2024-06-28 03:41:34,410 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3094, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3478, PETRI_PLACES=298, PETRI_TRANSITIONS=263} [2024-06-28 03:41:34,411 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-28 03:41:34,411 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 263 transitions, 3478 flow [2024-06-28 03:41:34,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:34,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:34,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:34,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-28 03:41:34,412 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:34,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:34,412 INFO L85 PathProgramCache]: Analyzing trace with hash 919251196, now seen corresponding path program 18 times [2024-06-28 03:41:34,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:34,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716290476] [2024-06-28 03:41:34,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:34,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:34,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:35,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:35,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716290476] [2024-06-28 03:41:35,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716290476] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:35,340 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:35,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:35,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653548632] [2024-06-28 03:41:35,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:35,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:35,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:35,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:35,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:35,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:35,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 263 transitions, 3478 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:35,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:35,414 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:35,414 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:35,814 INFO L124 PetriNetUnfolderBase]: 757/1337 cut-off events. [2024-06-28 03:41:35,814 INFO L125 PetriNetUnfolderBase]: For 137667/137667 co-relation queries the response was YES. [2024-06-28 03:41:35,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11009 conditions, 1337 events. 757/1337 cut-off events. For 137667/137667 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7052 event pairs, 111 based on Foata normal form. 2/1339 useless extension candidates. Maximal degree in co-relation 10879. Up to 1119 conditions per place. [2024-06-28 03:41:35,828 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 212 selfloop transitions, 62 changer transitions 0/276 dead transitions. [2024-06-28 03:41:35,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 276 transitions, 4092 flow [2024-06-28 03:41:35,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:41:35,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:41:35,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:41:35,829 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 03:41:35,829 INFO L175 Difference]: Start difference. First operand has 298 places, 263 transitions, 3478 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:41:35,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 276 transitions, 4092 flow [2024-06-28 03:41:36,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 276 transitions, 3828 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 03:41:36,250 INFO L231 Difference]: Finished difference. Result has 301 places, 264 transitions, 3378 flow [2024-06-28 03:41:36,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3214, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=263, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3378, PETRI_PLACES=301, PETRI_TRANSITIONS=264} [2024-06-28 03:41:36,251 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 271 predicate places. [2024-06-28 03:41:36,251 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 264 transitions, 3378 flow [2024-06-28 03:41:36,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:36,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:36,251 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:36,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-28 03:41:36,251 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:36,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:36,252 INFO L85 PathProgramCache]: Analyzing trace with hash -976638616, now seen corresponding path program 15 times [2024-06-28 03:41:36,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:36,252 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021352197] [2024-06-28 03:41:36,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:36,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:36,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:37,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:37,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:37,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021352197] [2024-06-28 03:41:37,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021352197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:37,050 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:37,050 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:37,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732214547] [2024-06-28 03:41:37,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:37,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:37,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:37,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:37,051 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:37,116 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:37,116 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 264 transitions, 3378 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:37,116 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:37,116 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:37,116 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:37,425 INFO L124 PetriNetUnfolderBase]: 753/1331 cut-off events. [2024-06-28 03:41:37,426 INFO L125 PetriNetUnfolderBase]: For 134717/134717 co-relation queries the response was YES. [2024-06-28 03:41:37,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10600 conditions, 1331 events. 753/1331 cut-off events. For 134717/134717 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 7014 event pairs, 108 based on Foata normal form. 2/1333 useless extension candidates. Maximal degree in co-relation 10469. Up to 623 conditions per place. [2024-06-28 03:41:37,440 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 163 selfloop transitions, 119 changer transitions 0/284 dead transitions. [2024-06-28 03:41:37,440 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 284 transitions, 4536 flow [2024-06-28 03:41:37,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:37,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:37,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 03:41:37,441 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-28 03:41:37,441 INFO L175 Difference]: Start difference. First operand has 301 places, 264 transitions, 3378 flow. Second operand 10 states and 123 transitions. [2024-06-28 03:41:37,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 284 transitions, 4536 flow [2024-06-28 03:41:37,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 284 transitions, 4382 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:37,826 INFO L231 Difference]: Finished difference. Result has 304 places, 265 transitions, 3493 flow [2024-06-28 03:41:37,826 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3224, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=264, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3493, PETRI_PLACES=304, PETRI_TRANSITIONS=265} [2024-06-28 03:41:37,827 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 274 predicate places. [2024-06-28 03:41:37,827 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 265 transitions, 3493 flow [2024-06-28 03:41:37,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:37,827 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:37,827 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:37,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-28 03:41:37,827 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:37,827 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:37,827 INFO L85 PathProgramCache]: Analyzing trace with hash -1170785788, now seen corresponding path program 19 times [2024-06-28 03:41:37,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:37,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002256500] [2024-06-28 03:41:37,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:37,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:38,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:38,748 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:38,748 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002256500] [2024-06-28 03:41:38,748 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002256500] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:38,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:38,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:38,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355603477] [2024-06-28 03:41:38,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:38,749 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:38,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:38,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:38,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:38,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:38,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 265 transitions, 3493 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:38,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:38,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:38,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:39,177 INFO L124 PetriNetUnfolderBase]: 757/1339 cut-off events. [2024-06-28 03:41:39,178 INFO L125 PetriNetUnfolderBase]: For 137118/137118 co-relation queries the response was YES. [2024-06-28 03:41:39,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10843 conditions, 1339 events. 757/1339 cut-off events. For 137118/137118 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 7092 event pairs, 110 based on Foata normal form. 2/1341 useless extension candidates. Maximal degree in co-relation 10711. Up to 1121 conditions per place. [2024-06-28 03:41:39,191 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 216 selfloop transitions, 61 changer transitions 0/279 dead transitions. [2024-06-28 03:41:39,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 312 places, 279 transitions, 4119 flow [2024-06-28 03:41:39,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:41:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:41:39,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 03:41:39,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35842293906810035 [2024-06-28 03:41:39,192 INFO L175 Difference]: Start difference. First operand has 304 places, 265 transitions, 3493 flow. Second operand 9 states and 100 transitions. [2024-06-28 03:41:39,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 312 places, 279 transitions, 4119 flow [2024-06-28 03:41:39,632 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 279 transitions, 3854 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:39,635 INFO L231 Difference]: Finished difference. Result has 306 places, 266 transitions, 3392 flow [2024-06-28 03:41:39,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3228, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3392, PETRI_PLACES=306, PETRI_TRANSITIONS=266} [2024-06-28 03:41:39,636 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 276 predicate places. [2024-06-28 03:41:39,636 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 266 transitions, 3392 flow [2024-06-28 03:41:39,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:39,636 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:39,636 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:39,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-28 03:41:39,636 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:39,637 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:39,637 INFO L85 PathProgramCache]: Analyzing trace with hash 1126321927, now seen corresponding path program 4 times [2024-06-28 03:41:39,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:39,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983736492] [2024-06-28 03:41:39,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:39,637 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:40,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:40,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:40,752 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983736492] [2024-06-28 03:41:40,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983736492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:40,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:40,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:40,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453827255] [2024-06-28 03:41:40,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:40,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:40,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:40,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:40,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:40,881 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:40,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 266 transitions, 3392 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:40,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:40,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:40,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:41,262 INFO L124 PetriNetUnfolderBase]: 778/1375 cut-off events. [2024-06-28 03:41:41,262 INFO L125 PetriNetUnfolderBase]: For 150629/150629 co-relation queries the response was YES. [2024-06-28 03:41:41,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11145 conditions, 1375 events. 778/1375 cut-off events. For 150629/150629 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7319 event pairs, 250 based on Foata normal form. 3/1378 useless extension candidates. Maximal degree in co-relation 11012. Up to 1323 conditions per place. [2024-06-28 03:41:41,276 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 262 selfloop transitions, 19 changer transitions 0/283 dead transitions. [2024-06-28 03:41:41,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 283 transitions, 4280 flow [2024-06-28 03:41:41,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:41,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:41,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-28 03:41:41,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 03:41:41,277 INFO L175 Difference]: Start difference. First operand has 306 places, 266 transitions, 3392 flow. Second operand 10 states and 100 transitions. [2024-06-28 03:41:41,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 283 transitions, 4280 flow [2024-06-28 03:41:41,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 283 transitions, 4126 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:41,797 INFO L231 Difference]: Finished difference. Result has 310 places, 271 transitions, 3427 flow [2024-06-28 03:41:41,797 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3238, PETRI_DIFFERENCE_MINUEND_PLACES=299, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=266, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=247, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3427, PETRI_PLACES=310, PETRI_TRANSITIONS=271} [2024-06-28 03:41:41,797 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 280 predicate places. [2024-06-28 03:41:41,797 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 271 transitions, 3427 flow [2024-06-28 03:41:41,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:41,798 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:41,798 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:41,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-28 03:41:41,798 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:41,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:41,799 INFO L85 PathProgramCache]: Analyzing trace with hash 1855898278, now seen corresponding path program 16 times [2024-06-28 03:41:41,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:41,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507318217] [2024-06-28 03:41:41,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:41,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:41,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:42,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:42,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:42,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507318217] [2024-06-28 03:41:42,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507318217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:42,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:42,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:42,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336950433] [2024-06-28 03:41:42,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:42,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:42,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:42,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:42,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:42,668 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:42,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 271 transitions, 3427 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:42,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:42,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:42,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:43,011 INFO L124 PetriNetUnfolderBase]: 797/1407 cut-off events. [2024-06-28 03:41:43,012 INFO L125 PetriNetUnfolderBase]: For 162625/162625 co-relation queries the response was YES. [2024-06-28 03:41:43,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11436 conditions, 1407 events. 797/1407 cut-off events. For 162625/162625 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 7502 event pairs, 96 based on Foata normal form. 4/1411 useless extension candidates. Maximal degree in co-relation 11301. Up to 659 conditions per place. [2024-06-28 03:41:43,025 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 154 selfloop transitions, 140 changer transitions 0/296 dead transitions. [2024-06-28 03:41:43,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 296 transitions, 4751 flow [2024-06-28 03:41:43,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:43,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:43,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 03:41:43,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-28 03:41:43,027 INFO L175 Difference]: Start difference. First operand has 310 places, 271 transitions, 3427 flow. Second operand 10 states and 121 transitions. [2024-06-28 03:41:43,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 296 transitions, 4751 flow [2024-06-28 03:41:43,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 312 places, 296 transitions, 4666 flow, removed 28 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:43,501 INFO L231 Difference]: Finished difference. Result has 314 places, 277 transitions, 3789 flow [2024-06-28 03:41:43,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3342, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3789, PETRI_PLACES=314, PETRI_TRANSITIONS=277} [2024-06-28 03:41:43,502 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 284 predicate places. [2024-06-28 03:41:43,502 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 277 transitions, 3789 flow [2024-06-28 03:41:43,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:43,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:43,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:43,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-28 03:41:43,502 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:43,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:43,503 INFO L85 PathProgramCache]: Analyzing trace with hash 924763678, now seen corresponding path program 17 times [2024-06-28 03:41:43,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:43,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898190296] [2024-06-28 03:41:43,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:43,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:43,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:44,317 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:44,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:44,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898190296] [2024-06-28 03:41:44,317 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898190296] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:44,317 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:44,317 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:44,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689289103] [2024-06-28 03:41:44,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:44,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:44,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:44,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:44,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:44,409 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:44,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 277 transitions, 3789 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:44,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:44,410 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:44,410 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:44,807 INFO L124 PetriNetUnfolderBase]: 803/1416 cut-off events. [2024-06-28 03:41:44,807 INFO L125 PetriNetUnfolderBase]: For 161518/161518 co-relation queries the response was YES. [2024-06-28 03:41:44,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11909 conditions, 1416 events. 803/1416 cut-off events. For 161518/161518 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7569 event pairs, 144 based on Foata normal form. 2/1418 useless extension candidates. Maximal degree in co-relation 11772. Up to 661 conditions per place. [2024-06-28 03:41:44,823 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 179 selfloop transitions, 118 changer transitions 0/299 dead transitions. [2024-06-28 03:41:44,823 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 323 places, 299 transitions, 5216 flow [2024-06-28 03:41:44,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:44,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:44,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-28 03:41:44,824 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4064516129032258 [2024-06-28 03:41:44,824 INFO L175 Difference]: Start difference. First operand has 314 places, 277 transitions, 3789 flow. Second operand 10 states and 126 transitions. [2024-06-28 03:41:44,824 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 323 places, 299 transitions, 5216 flow [2024-06-28 03:41:45,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 316 places, 299 transitions, 4872 flow, removed 34 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:45,311 INFO L231 Difference]: Finished difference. Result has 317 places, 279 transitions, 3755 flow [2024-06-28 03:41:45,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3447, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3755, PETRI_PLACES=317, PETRI_TRANSITIONS=279} [2024-06-28 03:41:45,312 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 287 predicate places. [2024-06-28 03:41:45,312 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 279 transitions, 3755 flow [2024-06-28 03:41:45,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:45,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:45,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:45,312 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-28 03:41:45,312 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:45,312 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:45,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1853265062, now seen corresponding path program 18 times [2024-06-28 03:41:45,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:45,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267578364] [2024-06-28 03:41:45,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:45,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:45,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:46,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:46,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:46,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267578364] [2024-06-28 03:41:46,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267578364] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:46,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:46,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:46,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164908459] [2024-06-28 03:41:46,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:46,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:46,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:46,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:46,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:46,274 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:46,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 279 transitions, 3755 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:46,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:46,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:46,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:46,608 INFO L124 PetriNetUnfolderBase]: 799/1410 cut-off events. [2024-06-28 03:41:46,608 INFO L125 PetriNetUnfolderBase]: For 156414/156414 co-relation queries the response was YES. [2024-06-28 03:41:46,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11538 conditions, 1410 events. 799/1410 cut-off events. For 156414/156414 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7516 event pairs, 87 based on Foata normal form. 2/1412 useless extension candidates. Maximal degree in co-relation 11400. Up to 660 conditions per place. [2024-06-28 03:41:46,623 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 150 selfloop transitions, 146 changer transitions 0/298 dead transitions. [2024-06-28 03:41:46,623 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 298 transitions, 4949 flow [2024-06-28 03:41:46,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:46,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:46,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 120 transitions. [2024-06-28 03:41:46,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3870967741935484 [2024-06-28 03:41:46,625 INFO L175 Difference]: Start difference. First operand has 317 places, 279 transitions, 3755 flow. Second operand 10 states and 120 transitions. [2024-06-28 03:41:46,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 298 transitions, 4949 flow [2024-06-28 03:41:47,115 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 298 transitions, 4671 flow, removed 29 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:47,118 INFO L231 Difference]: Finished difference. Result has 320 places, 279 transitions, 3774 flow [2024-06-28 03:41:47,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3477, PETRI_DIFFERENCE_MINUEND_PLACES=310, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=146, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3774, PETRI_PLACES=320, PETRI_TRANSITIONS=279} [2024-06-28 03:41:47,118 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 290 predicate places. [2024-06-28 03:41:47,119 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 279 transitions, 3774 flow [2024-06-28 03:41:47,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:47,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:47,119 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:47,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-28 03:41:47,119 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:47,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:47,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1173196362, now seen corresponding path program 19 times [2024-06-28 03:41:47,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:47,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760740199] [2024-06-28 03:41:47,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:47,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:47,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:47,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:47,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:47,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760740199] [2024-06-28 03:41:47,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760740199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:47,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:47,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:47,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805315717] [2024-06-28 03:41:47,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:47,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:47,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:47,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:47,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:47,999 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:47,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 279 transitions, 3774 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:47,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:47,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:47,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:48,339 INFO L124 PetriNetUnfolderBase]: 793/1402 cut-off events. [2024-06-28 03:41:48,340 INFO L125 PetriNetUnfolderBase]: For 153317/153317 co-relation queries the response was YES. [2024-06-28 03:41:48,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11198 conditions, 1402 events. 793/1402 cut-off events. For 153317/153317 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7502 event pairs, 138 based on Foata normal form. 4/1406 useless extension candidates. Maximal degree in co-relation 11059. Up to 659 conditions per place. [2024-06-28 03:41:48,355 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 177 selfloop transitions, 119 changer transitions 0/298 dead transitions. [2024-06-28 03:41:48,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 329 places, 298 transitions, 4974 flow [2024-06-28 03:41:48,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:48,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:48,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-28 03:41:48,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3967741935483871 [2024-06-28 03:41:48,356 INFO L175 Difference]: Start difference. First operand has 320 places, 279 transitions, 3774 flow. Second operand 10 states and 123 transitions. [2024-06-28 03:41:48,356 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 329 places, 298 transitions, 4974 flow [2024-06-28 03:41:48,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 298 transitions, 4593 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-28 03:41:48,846 INFO L231 Difference]: Finished difference. Result has 323 places, 279 transitions, 3638 flow [2024-06-28 03:41:48,846 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3393, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=160, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3638, PETRI_PLACES=323, PETRI_TRANSITIONS=279} [2024-06-28 03:41:48,846 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 293 predicate places. [2024-06-28 03:41:48,846 INFO L495 AbstractCegarLoop]: Abstraction has has 323 places, 279 transitions, 3638 flow [2024-06-28 03:41:48,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:48,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:48,846 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:48,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-28 03:41:48,847 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:48,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:48,847 INFO L85 PathProgramCache]: Analyzing trace with hash 1855898557, now seen corresponding path program 5 times [2024-06-28 03:41:48,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:48,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263403202] [2024-06-28 03:41:48,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:48,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:48,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:49,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:49,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:49,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263403202] [2024-06-28 03:41:49,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263403202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:49,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:49,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:49,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071631142] [2024-06-28 03:41:49,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:49,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:49,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:49,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:49,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:49,979 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:49,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 323 places, 279 transitions, 3638 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:49,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:49,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:49,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:50,291 INFO L124 PetriNetUnfolderBase]: 789/1395 cut-off events. [2024-06-28 03:41:50,291 INFO L125 PetriNetUnfolderBase]: For 142117/142117 co-relation queries the response was YES. [2024-06-28 03:41:50,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10868 conditions, 1395 events. 789/1395 cut-off events. For 142117/142117 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7469 event pairs, 185 based on Foata normal form. 1/1396 useless extension candidates. Maximal degree in co-relation 10728. Up to 1302 conditions per place. [2024-06-28 03:41:50,306 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 240 selfloop transitions, 47 changer transitions 0/289 dead transitions. [2024-06-28 03:41:50,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 289 transitions, 4248 flow [2024-06-28 03:41:50,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:50,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:50,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-28 03:41:50,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-28 03:41:50,307 INFO L175 Difference]: Start difference. First operand has 323 places, 279 transitions, 3638 flow. Second operand 10 states and 101 transitions. [2024-06-28 03:41:50,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 289 transitions, 4248 flow [2024-06-28 03:41:50,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 289 transitions, 4010 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:50,809 INFO L231 Difference]: Finished difference. Result has 325 places, 280 transitions, 3517 flow [2024-06-28 03:41:50,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3402, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3517, PETRI_PLACES=325, PETRI_TRANSITIONS=280} [2024-06-28 03:41:50,809 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 295 predicate places. [2024-06-28 03:41:50,809 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 280 transitions, 3517 flow [2024-06-28 03:41:50,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:50,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:50,810 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:50,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-28 03:41:50,810 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:50,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:50,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1865095048, now seen corresponding path program 20 times [2024-06-28 03:41:50,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:50,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314742286] [2024-06-28 03:41:50,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:50,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:51,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:51,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:51,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314742286] [2024-06-28 03:41:51,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314742286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:51,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:51,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:51,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063476540] [2024-06-28 03:41:51,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:51,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:51,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:51,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:51,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:51,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:51,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 280 transitions, 3517 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:51,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:51,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:51,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:52,083 INFO L124 PetriNetUnfolderBase]: 781/1383 cut-off events. [2024-06-28 03:41:52,083 INFO L125 PetriNetUnfolderBase]: For 139710/139710 co-relation queries the response was YES. [2024-06-28 03:41:52,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10251 conditions, 1383 events. 781/1383 cut-off events. For 139710/139710 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7390 event pairs, 243 based on Foata normal form. 4/1387 useless extension candidates. Maximal degree in co-relation 10110. Up to 1321 conditions per place. [2024-06-28 03:41:52,097 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 266 selfloop transitions, 24 changer transitions 0/292 dead transitions. [2024-06-28 03:41:52,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 292 transitions, 4305 flow [2024-06-28 03:41:52,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:52,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:52,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-28 03:41:52,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32903225806451614 [2024-06-28 03:41:52,099 INFO L175 Difference]: Start difference. First operand has 325 places, 280 transitions, 3517 flow. Second operand 10 states and 102 transitions. [2024-06-28 03:41:52,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 292 transitions, 4305 flow [2024-06-28 03:41:52,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 292 transitions, 4120 flow, removed 47 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:52,597 INFO L231 Difference]: Finished difference. Result has 327 places, 280 transitions, 3389 flow [2024-06-28 03:41:52,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3332, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3389, PETRI_PLACES=327, PETRI_TRANSITIONS=280} [2024-06-28 03:41:52,598 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 297 predicate places. [2024-06-28 03:41:52,598 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 280 transitions, 3389 flow [2024-06-28 03:41:52,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:52,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:52,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:52,599 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-28 03:41:52,599 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:52,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:52,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1865421757, now seen corresponding path program 6 times [2024-06-28 03:41:52,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:52,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695279136] [2024-06-28 03:41:52,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:52,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:52,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:53,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:53,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:53,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695279136] [2024-06-28 03:41:53,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695279136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:53,799 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:53,799 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:53,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [890696384] [2024-06-28 03:41:53,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:53,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:53,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:53,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:53,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:53,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:53,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 280 transitions, 3389 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:53,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:53,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:53,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:54,358 INFO L124 PetriNetUnfolderBase]: 777/1377 cut-off events. [2024-06-28 03:41:54,358 INFO L125 PetriNetUnfolderBase]: For 126102/126102 co-relation queries the response was YES. [2024-06-28 03:41:54,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9997 conditions, 1377 events. 777/1377 cut-off events. For 126102/126102 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7386 event pairs, 245 based on Foata normal form. 1/1378 useless extension candidates. Maximal degree in co-relation 9855. Up to 1339 conditions per place. [2024-06-28 03:41:54,372 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 268 selfloop transitions, 21 changer transitions 0/291 dead transitions. [2024-06-28 03:41:54,372 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 291 transitions, 4000 flow [2024-06-28 03:41:54,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:41:54,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:41:54,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 103 transitions. [2024-06-28 03:41:54,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3020527859237537 [2024-06-28 03:41:54,376 INFO L175 Difference]: Start difference. First operand has 327 places, 280 transitions, 3389 flow. Second operand 11 states and 103 transitions. [2024-06-28 03:41:54,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 291 transitions, 4000 flow [2024-06-28 03:41:54,845 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 291 transitions, 3906 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:54,848 INFO L231 Difference]: Finished difference. Result has 328 places, 281 transitions, 3358 flow [2024-06-28 03:41:54,849 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3297, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3358, PETRI_PLACES=328, PETRI_TRANSITIONS=281} [2024-06-28 03:41:54,849 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 298 predicate places. [2024-06-28 03:41:54,849 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 281 transitions, 3358 flow [2024-06-28 03:41:54,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:54,849 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:54,849 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:54,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-28 03:41:54,849 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:54,851 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:54,851 INFO L85 PathProgramCache]: Analyzing trace with hash -1170570307, now seen corresponding path program 7 times [2024-06-28 03:41:54,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:54,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215845841] [2024-06-28 03:41:54,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:54,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:54,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:55,966 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:55,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:55,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215845841] [2024-06-28 03:41:55,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215845841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:55,966 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:55,966 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:55,966 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44533807] [2024-06-28 03:41:55,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:55,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:55,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:55,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:55,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:56,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:56,028 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 281 transitions, 3358 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:56,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:56,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:56,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:56,321 INFO L124 PetriNetUnfolderBase]: 773/1369 cut-off events. [2024-06-28 03:41:56,321 INFO L125 PetriNetUnfolderBase]: For 124349/124349 co-relation queries the response was YES. [2024-06-28 03:41:56,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9851 conditions, 1369 events. 773/1369 cut-off events. For 124349/124349 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7321 event pairs, 182 based on Foata normal form. 1/1370 useless extension candidates. Maximal degree in co-relation 9709. Up to 1276 conditions per place. [2024-06-28 03:41:56,335 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 247 selfloop transitions, 42 changer transitions 0/291 dead transitions. [2024-06-28 03:41:56,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 291 transitions, 3965 flow [2024-06-28 03:41:56,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:56,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:56,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 03:41:56,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33225806451612905 [2024-06-28 03:41:56,336 INFO L175 Difference]: Start difference. First operand has 328 places, 281 transitions, 3358 flow. Second operand 10 states and 103 transitions. [2024-06-28 03:41:56,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 291 transitions, 3965 flow [2024-06-28 03:41:56,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 327 places, 291 transitions, 3917 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 03:41:56,776 INFO L231 Difference]: Finished difference. Result has 328 places, 282 transitions, 3410 flow [2024-06-28 03:41:56,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3310, PETRI_DIFFERENCE_MINUEND_PLACES=318, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3410, PETRI_PLACES=328, PETRI_TRANSITIONS=282} [2024-06-28 03:41:56,776 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 298 predicate places. [2024-06-28 03:41:56,777 INFO L495 AbstractCegarLoop]: Abstraction has has 328 places, 282 transitions, 3410 flow [2024-06-28 03:41:56,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:56,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:56,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:56,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-28 03:41:56,777 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:56,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:56,778 INFO L85 PathProgramCache]: Analyzing trace with hash -1176296038, now seen corresponding path program 20 times [2024-06-28 03:41:56,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:56,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292529279] [2024-06-28 03:41:56,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:56,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:56,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:57,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:57,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:57,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292529279] [2024-06-28 03:41:57,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292529279] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:57,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:57,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:57,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560392941] [2024-06-28 03:41:57,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:57,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:57,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:57,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:57,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:57,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:57,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 328 places, 282 transitions, 3410 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:57,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:57,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:57,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:58,165 INFO L124 PetriNetUnfolderBase]: 770/1364 cut-off events. [2024-06-28 03:41:58,166 INFO L125 PetriNetUnfolderBase]: For 121129/121129 co-relation queries the response was YES. [2024-06-28 03:41:58,174 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9697 conditions, 1364 events. 770/1364 cut-off events. For 121129/121129 co-relation queries the response was YES. Maximal size of possible extension queue 139. Compared 7285 event pairs, 102 based on Foata normal form. 2/1366 useless extension candidates. Maximal degree in co-relation 9554. Up to 1120 conditions per place. [2024-06-28 03:41:58,177 INFO L140 encePairwiseOnDemand]: 22/31 looper letters, 227 selfloop transitions, 65 changer transitions 0/294 dead transitions. [2024-06-28 03:41:58,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 294 transitions, 4024 flow [2024-06-28 03:41:58,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:41:58,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:41:58,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-28 03:41:58,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35125448028673834 [2024-06-28 03:41:58,179 INFO L175 Difference]: Start difference. First operand has 328 places, 282 transitions, 3410 flow. Second operand 9 states and 98 transitions. [2024-06-28 03:41:58,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 294 transitions, 4024 flow [2024-06-28 03:41:58,654 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 294 transitions, 3927 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-28 03:41:58,657 INFO L231 Difference]: Finished difference. Result has 329 places, 282 transitions, 3447 flow [2024-06-28 03:41:58,658 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3313, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3447, PETRI_PLACES=329, PETRI_TRANSITIONS=282} [2024-06-28 03:41:58,658 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 299 predicate places. [2024-06-28 03:41:58,658 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 282 transitions, 3447 flow [2024-06-28 03:41:58,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:58,658 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:41:58,658 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:41:58,659 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-28 03:41:58,659 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:41:58,659 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:41:58,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1176142216, now seen corresponding path program 21 times [2024-06-28 03:41:58,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:41:58,659 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [339551222] [2024-06-28 03:41:58,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:41:58,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:41:58,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:41:59,457 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:41:59,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:41:59,458 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [339551222] [2024-06-28 03:41:59,458 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [339551222] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:41:59,458 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:41:59,458 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:41:59,458 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081262752] [2024-06-28 03:41:59,458 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:41:59,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:41:59,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:41:59,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:41:59,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:41:59,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:41:59,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 282 transitions, 3447 flow. Second operand has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:41:59,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:41:59,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:41:59,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:41:59,872 INFO L124 PetriNetUnfolderBase]: 766/1358 cut-off events. [2024-06-28 03:41:59,873 INFO L125 PetriNetUnfolderBase]: For 116934/116934 co-relation queries the response was YES. [2024-06-28 03:41:59,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9544 conditions, 1358 events. 766/1358 cut-off events. For 116934/116934 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 7262 event pairs, 130 based on Foata normal form. 2/1360 useless extension candidates. Maximal degree in co-relation 9400. Up to 637 conditions per place. [2024-06-28 03:41:59,885 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 160 selfloop transitions, 139 changer transitions 0/301 dead transitions. [2024-06-28 03:41:59,885 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 301 transitions, 4532 flow [2024-06-28 03:41:59,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:41:59,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:41:59,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 121 transitions. [2024-06-28 03:41:59,886 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3903225806451613 [2024-06-28 03:41:59,886 INFO L175 Difference]: Start difference. First operand has 329 places, 282 transitions, 3447 flow. Second operand 10 states and 121 transitions. [2024-06-28 03:41:59,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 301 transitions, 4532 flow [2024-06-28 03:42:00,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 329 places, 301 transitions, 4287 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:00,292 INFO L231 Difference]: Finished difference. Result has 330 places, 284 transitions, 3554 flow [2024-06-28 03:42:00,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3202, PETRI_DIFFERENCE_MINUEND_PLACES=320, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=144, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3554, PETRI_PLACES=330, PETRI_TRANSITIONS=284} [2024-06-28 03:42:00,292 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 300 predicate places. [2024-06-28 03:42:00,292 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 284 transitions, 3554 flow [2024-06-28 03:42:00,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.2727272727272725) internal successors, (69), 11 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:00,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:00,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:00,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-28 03:42:00,293 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:00,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:00,294 INFO L85 PathProgramCache]: Analyzing trace with hash 738158287, now seen corresponding path program 1 times [2024-06-28 03:42:00,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:00,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37829446] [2024-06-28 03:42:00,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:00,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:01,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:01,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:01,074 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37829446] [2024-06-28 03:42:01,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37829446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:01,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:01,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:01,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18219924] [2024-06-28 03:42:01,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:01,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:01,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:01,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:01,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:01,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:01,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 284 transitions, 3554 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:01,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:01,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:01,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:01,536 INFO L124 PetriNetUnfolderBase]: 770/1366 cut-off events. [2024-06-28 03:42:01,536 INFO L125 PetriNetUnfolderBase]: For 118989/118989 co-relation queries the response was YES. [2024-06-28 03:42:01,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9606 conditions, 1366 events. 770/1366 cut-off events. For 118989/118989 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7328 event pairs, 163 based on Foata normal form. 2/1368 useless extension candidates. Maximal degree in co-relation 9462. Up to 1273 conditions per place. [2024-06-28 03:42:01,550 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 277 selfloop transitions, 26 changer transitions 0/305 dead transitions. [2024-06-28 03:42:01,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 340 places, 305 transitions, 4224 flow [2024-06-28 03:42:01,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:01,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:01,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-28 03:42:01,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3313782991202346 [2024-06-28 03:42:01,551 INFO L175 Difference]: Start difference. First operand has 330 places, 284 transitions, 3554 flow. Second operand 11 states and 113 transitions. [2024-06-28 03:42:01,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 340 places, 305 transitions, 4224 flow [2024-06-28 03:42:02,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 305 transitions, 3869 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:02,030 INFO L231 Difference]: Finished difference. Result has 332 places, 285 transitions, 3271 flow [2024-06-28 03:42:02,030 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3199, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3271, PETRI_PLACES=332, PETRI_TRANSITIONS=285} [2024-06-28 03:42:02,031 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 302 predicate places. [2024-06-28 03:42:02,031 INFO L495 AbstractCegarLoop]: Abstraction has has 332 places, 285 transitions, 3271 flow [2024-06-28 03:42:02,031 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:02,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:02,031 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:02,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-28 03:42:02,031 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:02,032 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:02,032 INFO L85 PathProgramCache]: Analyzing trace with hash -1992674625, now seen corresponding path program 2 times [2024-06-28 03:42:02,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:02,032 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443273038] [2024-06-28 03:42:02,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:02,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:02,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:02,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:02,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:02,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443273038] [2024-06-28 03:42:02,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443273038] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:02,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:02,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:02,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766817770] [2024-06-28 03:42:02,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:02,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:02,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:02,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:02,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:03,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:03,020 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 332 places, 285 transitions, 3271 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:03,020 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:03,020 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:03,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:03,381 INFO L124 PetriNetUnfolderBase]: 774/1374 cut-off events. [2024-06-28 03:42:03,381 INFO L125 PetriNetUnfolderBase]: For 120621/120621 co-relation queries the response was YES. [2024-06-28 03:42:03,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9200 conditions, 1374 events. 774/1374 cut-off events. For 120621/120621 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7400 event pairs, 132 based on Foata normal form. 2/1376 useless extension candidates. Maximal degree in co-relation 9057. Up to 1246 conditions per place. [2024-06-28 03:42:03,396 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 276 selfloop transitions, 28 changer transitions 0/306 dead transitions. [2024-06-28 03:42:03,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 306 transitions, 3943 flow [2024-06-28 03:42:03,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:03,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:03,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-28 03:42:03,397 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 03:42:03,397 INFO L175 Difference]: Start difference. First operand has 332 places, 285 transitions, 3271 flow. Second operand 11 states and 110 transitions. [2024-06-28 03:42:03,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 342 places, 306 transitions, 3943 flow [2024-06-28 03:42:03,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 333 places, 306 transitions, 3881 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:03,882 INFO L231 Difference]: Finished difference. Result has 334 places, 286 transitions, 3287 flow [2024-06-28 03:42:03,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3209, PETRI_DIFFERENCE_MINUEND_PLACES=323, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=285, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3287, PETRI_PLACES=334, PETRI_TRANSITIONS=286} [2024-06-28 03:42:03,883 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 304 predicate places. [2024-06-28 03:42:03,883 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 286 transitions, 3287 flow [2024-06-28 03:42:03,883 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:03,883 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:03,883 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:03,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-28 03:42:03,883 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:03,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:03,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1859731027, now seen corresponding path program 3 times [2024-06-28 03:42:03,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:03,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010823719] [2024-06-28 03:42:03,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:03,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:04,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:04,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:04,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010823719] [2024-06-28 03:42:04,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010823719] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:04,712 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:04,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:04,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001012781] [2024-06-28 03:42:04,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:04,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:04,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:04,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:04,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:04,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:04,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 286 transitions, 3287 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:04,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:04,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:04,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:05,197 INFO L124 PetriNetUnfolderBase]: 785/1395 cut-off events. [2024-06-28 03:42:05,197 INFO L125 PetriNetUnfolderBase]: For 131642/131642 co-relation queries the response was YES. [2024-06-28 03:42:05,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9541 conditions, 1395 events. 785/1395 cut-off events. For 131642/131642 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 7540 event pairs, 159 based on Foata normal form. 2/1397 useless extension candidates. Maximal degree in co-relation 9397. Up to 1258 conditions per place. [2024-06-28 03:42:05,212 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 272 selfloop transitions, 34 changer transitions 0/308 dead transitions. [2024-06-28 03:42:05,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 308 transitions, 4177 flow [2024-06-28 03:42:05,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:05,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:05,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 03:42:05,213 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 03:42:05,213 INFO L175 Difference]: Start difference. First operand has 334 places, 286 transitions, 3287 flow. Second operand 11 states and 118 transitions. [2024-06-28 03:42:05,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 308 transitions, 4177 flow [2024-06-28 03:42:05,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 335 places, 308 transitions, 4109 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:05,726 INFO L231 Difference]: Finished difference. Result has 336 places, 288 transitions, 3329 flow [2024-06-28 03:42:05,726 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3219, PETRI_DIFFERENCE_MINUEND_PLACES=325, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3329, PETRI_PLACES=336, PETRI_TRANSITIONS=288} [2024-06-28 03:42:05,727 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 306 predicate places. [2024-06-28 03:42:05,727 INFO L495 AbstractCegarLoop]: Abstraction has has 336 places, 288 transitions, 3329 flow [2024-06-28 03:42:05,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:05,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:05,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:05,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-28 03:42:05,727 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:05,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:05,727 INFO L85 PathProgramCache]: Analyzing trace with hash 110910217, now seen corresponding path program 1 times [2024-06-28 03:42:05,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:05,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031268343] [2024-06-28 03:42:05,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:05,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:05,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:06,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:06,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:06,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031268343] [2024-06-28 03:42:06,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031268343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:06,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:06,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:06,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744972791] [2024-06-28 03:42:06,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:06,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:06,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:06,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:06,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:06,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:06,592 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 288 transitions, 3329 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:06,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:06,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:06,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:06,942 INFO L124 PetriNetUnfolderBase]: 788/1400 cut-off events. [2024-06-28 03:42:06,942 INFO L125 PetriNetUnfolderBase]: For 130742/130742 co-relation queries the response was YES. [2024-06-28 03:42:06,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9628 conditions, 1400 events. 788/1400 cut-off events. For 130742/130742 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7575 event pairs, 161 based on Foata normal form. 1/1401 useless extension candidates. Maximal degree in co-relation 9483. Up to 1299 conditions per place. [2024-06-28 03:42:06,957 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 269 selfloop transitions, 38 changer transitions 0/309 dead transitions. [2024-06-28 03:42:06,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 309 transitions, 4061 flow [2024-06-28 03:42:06,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:06,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:06,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 03:42:06,958 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 03:42:06,958 INFO L175 Difference]: Start difference. First operand has 336 places, 288 transitions, 3329 flow. Second operand 11 states and 116 transitions. [2024-06-28 03:42:06,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 309 transitions, 4061 flow [2024-06-28 03:42:07,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 309 transitions, 3999 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-28 03:42:07,452 INFO L231 Difference]: Finished difference. Result has 340 places, 290 transitions, 3419 flow [2024-06-28 03:42:07,452 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3267, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3419, PETRI_PLACES=340, PETRI_TRANSITIONS=290} [2024-06-28 03:42:07,452 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 310 predicate places. [2024-06-28 03:42:07,453 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 290 transitions, 3419 flow [2024-06-28 03:42:07,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:07,453 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:07,453 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:07,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-28 03:42:07,453 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:07,454 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:07,454 INFO L85 PathProgramCache]: Analyzing trace with hash 110904451, now seen corresponding path program 4 times [2024-06-28 03:42:07,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:07,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171910503] [2024-06-28 03:42:07,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:07,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:08,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:08,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:08,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171910503] [2024-06-28 03:42:08,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171910503] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:08,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:08,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:08,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200462778] [2024-06-28 03:42:08,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:08,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:08,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:08,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:08,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:08,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:08,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 290 transitions, 3419 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:08,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:08,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:08,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:08,930 INFO L124 PetriNetUnfolderBase]: 792/1408 cut-off events. [2024-06-28 03:42:08,930 INFO L125 PetriNetUnfolderBase]: For 138285/138285 co-relation queries the response was YES. [2024-06-28 03:42:08,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9736 conditions, 1408 events. 792/1408 cut-off events. For 138285/138285 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7621 event pairs, 166 based on Foata normal form. 2/1410 useless extension candidates. Maximal degree in co-relation 9589. Up to 1310 conditions per place. [2024-06-28 03:42:08,947 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 273 selfloop transitions, 35 changer transitions 0/310 dead transitions. [2024-06-28 03:42:08,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 310 transitions, 4103 flow [2024-06-28 03:42:08,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:08,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:08,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-28 03:42:08,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33724340175953077 [2024-06-28 03:42:08,948 INFO L175 Difference]: Start difference. First operand has 340 places, 290 transitions, 3419 flow. Second operand 11 states and 115 transitions. [2024-06-28 03:42:08,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 310 transitions, 4103 flow [2024-06-28 03:42:09,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 310 transitions, 3993 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:09,569 INFO L231 Difference]: Finished difference. Result has 342 places, 291 transitions, 3402 flow [2024-06-28 03:42:09,569 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3309, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=290, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3402, PETRI_PLACES=342, PETRI_TRANSITIONS=291} [2024-06-28 03:42:09,569 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2024-06-28 03:42:09,569 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 291 transitions, 3402 flow [2024-06-28 03:42:09,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:09,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:09,570 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:09,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-28 03:42:09,570 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:09,570 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:09,571 INFO L85 PathProgramCache]: Analyzing trace with hash 110750071, now seen corresponding path program 5 times [2024-06-28 03:42:09,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:09,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116683904] [2024-06-28 03:42:09,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:09,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:09,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:10,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:10,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:10,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116683904] [2024-06-28 03:42:10,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116683904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:10,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:10,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:10,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5960048] [2024-06-28 03:42:10,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:10,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:10,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:10,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:10,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:10,620 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:10,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 291 transitions, 3402 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:10,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:10,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:10,621 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:11,038 INFO L124 PetriNetUnfolderBase]: 789/1403 cut-off events. [2024-06-28 03:42:11,038 INFO L125 PetriNetUnfolderBase]: For 130946/130946 co-relation queries the response was YES. [2024-06-28 03:42:11,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9509 conditions, 1403 events. 789/1403 cut-off events. For 130946/130946 co-relation queries the response was YES. Maximal size of possible extension queue 146. Compared 7620 event pairs, 160 based on Foata normal form. 2/1405 useless extension candidates. Maximal degree in co-relation 9361. Up to 1289 conditions per place. [2024-06-28 03:42:11,053 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 273 selfloop transitions, 35 changer transitions 0/310 dead transitions. [2024-06-28 03:42:11,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 310 transitions, 4068 flow [2024-06-28 03:42:11,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:11,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:11,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 03:42:11,054 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 03:42:11,054 INFO L175 Difference]: Start difference. First operand has 342 places, 291 transitions, 3402 flow. Second operand 11 states and 116 transitions. [2024-06-28 03:42:11,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 310 transitions, 4068 flow [2024-06-28 03:42:11,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 310 transitions, 3977 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:11,564 INFO L231 Difference]: Finished difference. Result has 344 places, 291 transitions, 3385 flow [2024-06-28 03:42:11,564 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3311, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3385, PETRI_PLACES=344, PETRI_TRANSITIONS=291} [2024-06-28 03:42:11,564 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 314 predicate places. [2024-06-28 03:42:11,564 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 291 transitions, 3385 flow [2024-06-28 03:42:11,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:11,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:11,565 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:11,565 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-28 03:42:11,565 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:11,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:11,565 INFO L85 PathProgramCache]: Analyzing trace with hash 882511769, now seen corresponding path program 6 times [2024-06-28 03:42:11,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:11,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139206781] [2024-06-28 03:42:11,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:11,566 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:11,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:12,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:12,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:12,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139206781] [2024-06-28 03:42:12,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139206781] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:12,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:12,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:12,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569656348] [2024-06-28 03:42:12,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:12,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:12,485 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:12,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:12,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:12,619 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:12,620 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 291 transitions, 3385 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:12,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:12,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:12,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:13,017 INFO L124 PetriNetUnfolderBase]: 793/1411 cut-off events. [2024-06-28 03:42:13,018 INFO L125 PetriNetUnfolderBase]: For 133388/133388 co-relation queries the response was YES. [2024-06-28 03:42:13,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9548 conditions, 1411 events. 793/1411 cut-off events. For 133388/133388 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7651 event pairs, 138 based on Foata normal form. 2/1413 useless extension candidates. Maximal degree in co-relation 9399. Up to 1318 conditions per place. [2024-06-28 03:42:13,034 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 284 selfloop transitions, 25 changer transitions 0/311 dead transitions. [2024-06-28 03:42:13,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 311 transitions, 4071 flow [2024-06-28 03:42:13,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:13,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:13,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 03:42:13,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-28 03:42:13,035 INFO L175 Difference]: Start difference. First operand has 344 places, 291 transitions, 3385 flow. Second operand 11 states and 114 transitions. [2024-06-28 03:42:13,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 311 transitions, 4071 flow [2024-06-28 03:42:13,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 311 transitions, 3992 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:13,609 INFO L231 Difference]: Finished difference. Result has 345 places, 292 transitions, 3382 flow [2024-06-28 03:42:13,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3306, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3382, PETRI_PLACES=345, PETRI_TRANSITIONS=292} [2024-06-28 03:42:13,610 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 315 predicate places. [2024-06-28 03:42:13,610 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 292 transitions, 3382 flow [2024-06-28 03:42:13,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:13,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:13,610 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:13,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-28 03:42:13,610 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:13,611 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:13,611 INFO L85 PathProgramCache]: Analyzing trace with hash 940604219, now seen corresponding path program 7 times [2024-06-28 03:42:13,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:13,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092698295] [2024-06-28 03:42:13,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:13,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:13,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:14,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:14,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:14,501 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1092698295] [2024-06-28 03:42:14,501 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1092698295] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:14,501 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:14,501 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:14,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618132250] [2024-06-28 03:42:14,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:14,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:14,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:14,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:14,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:14,599 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:14,600 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 292 transitions, 3382 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:14,600 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:14,600 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:14,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:14,984 INFO L124 PetriNetUnfolderBase]: 804/1432 cut-off events. [2024-06-28 03:42:14,984 INFO L125 PetriNetUnfolderBase]: For 146574/146574 co-relation queries the response was YES. [2024-06-28 03:42:14,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9891 conditions, 1432 events. 804/1432 cut-off events. For 146574/146574 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7813 event pairs, 141 based on Foata normal form. 2/1434 useless extension candidates. Maximal degree in co-relation 9741. Up to 1295 conditions per place. [2024-06-28 03:42:15,001 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 278 selfloop transitions, 33 changer transitions 0/313 dead transitions. [2024-06-28 03:42:15,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 313 transitions, 4298 flow [2024-06-28 03:42:15,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:15,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:15,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 03:42:15,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 03:42:15,002 INFO L175 Difference]: Start difference. First operand has 345 places, 292 transitions, 3382 flow. Second operand 11 states and 119 transitions. [2024-06-28 03:42:15,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 313 transitions, 4298 flow [2024-06-28 03:42:15,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 313 transitions, 4232 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:15,636 INFO L231 Difference]: Finished difference. Result has 347 places, 294 transitions, 3432 flow [2024-06-28 03:42:15,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3316, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3432, PETRI_PLACES=347, PETRI_TRANSITIONS=294} [2024-06-28 03:42:15,637 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 317 predicate places. [2024-06-28 03:42:15,637 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 294 transitions, 3432 flow [2024-06-28 03:42:15,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:15,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:15,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:15,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-28 03:42:15,637 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:15,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:15,638 INFO L85 PathProgramCache]: Analyzing trace with hash 940719539, now seen corresponding path program 8 times [2024-06-28 03:42:15,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:15,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436905042] [2024-06-28 03:42:15,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:15,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:15,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:16,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:16,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:16,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436905042] [2024-06-28 03:42:16,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436905042] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:16,574 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:16,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:16,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383081943] [2024-06-28 03:42:16,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:16,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:16,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:16,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:16,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:16,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:16,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 294 transitions, 3432 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:16,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:16,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:16,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:17,104 INFO L124 PetriNetUnfolderBase]: 808/1440 cut-off events. [2024-06-28 03:42:17,104 INFO L125 PetriNetUnfolderBase]: For 149611/149611 co-relation queries the response was YES. [2024-06-28 03:42:17,116 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9976 conditions, 1440 events. 808/1440 cut-off events. For 149611/149611 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7891 event pairs, 139 based on Foata normal form. 2/1442 useless extension candidates. Maximal degree in co-relation 9825. Up to 1323 conditions per place. [2024-06-28 03:42:17,120 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 278 selfloop transitions, 34 changer transitions 0/314 dead transitions. [2024-06-28 03:42:17,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 314 transitions, 4334 flow [2024-06-28 03:42:17,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:17,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:17,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 03:42:17,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 03:42:17,121 INFO L175 Difference]: Start difference. First operand has 347 places, 294 transitions, 3432 flow. Second operand 11 states and 118 transitions. [2024-06-28 03:42:17,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 314 transitions, 4334 flow [2024-06-28 03:42:17,774 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 350 places, 314 transitions, 4262 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-28 03:42:17,777 INFO L231 Difference]: Finished difference. Result has 351 places, 295 transitions, 3456 flow [2024-06-28 03:42:17,777 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3366, PETRI_DIFFERENCE_MINUEND_PLACES=340, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3456, PETRI_PLACES=351, PETRI_TRANSITIONS=295} [2024-06-28 03:42:17,778 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 321 predicate places. [2024-06-28 03:42:17,778 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 295 transitions, 3456 flow [2024-06-28 03:42:17,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:17,778 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:17,778 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:17,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-28 03:42:17,779 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:17,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:17,780 INFO L85 PathProgramCache]: Analyzing trace with hash 940724375, now seen corresponding path program 2 times [2024-06-28 03:42:17,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:17,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434186259] [2024-06-28 03:42:17,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:17,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:18,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:18,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:18,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434186259] [2024-06-28 03:42:18,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434186259] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:18,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:18,746 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:18,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638457519] [2024-06-28 03:42:18,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:18,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:18,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:18,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:18,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:18,866 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:18,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 295 transitions, 3456 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:18,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:18,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:18,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:19,270 INFO L124 PetriNetUnfolderBase]: 805/1435 cut-off events. [2024-06-28 03:42:19,270 INFO L125 PetriNetUnfolderBase]: For 141431/141431 co-relation queries the response was YES. [2024-06-28 03:42:19,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9847 conditions, 1435 events. 805/1435 cut-off events. For 141431/141431 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7845 event pairs, 141 based on Foata normal form. 1/1436 useless extension candidates. Maximal degree in co-relation 9694. Up to 1334 conditions per place. [2024-06-28 03:42:19,286 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 275 selfloop transitions, 37 changer transitions 0/314 dead transitions. [2024-06-28 03:42:19,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 361 places, 314 transitions, 4164 flow [2024-06-28 03:42:19,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:19,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:19,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 03:42:19,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 03:42:19,287 INFO L175 Difference]: Start difference. First operand has 351 places, 295 transitions, 3456 flow. Second operand 11 states and 117 transitions. [2024-06-28 03:42:19,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 361 places, 314 transitions, 4164 flow [2024-06-28 03:42:19,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 314 transitions, 4063 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:19,885 INFO L231 Difference]: Finished difference. Result has 353 places, 296 transitions, 3471 flow [2024-06-28 03:42:19,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3355, PETRI_DIFFERENCE_MINUEND_PLACES=342, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3471, PETRI_PLACES=353, PETRI_TRANSITIONS=296} [2024-06-28 03:42:19,886 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 323 predicate places. [2024-06-28 03:42:19,886 INFO L495 AbstractCegarLoop]: Abstraction has has 353 places, 296 transitions, 3471 flow [2024-06-28 03:42:19,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:19,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:19,886 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:19,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-28 03:42:19,886 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:19,887 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:19,887 INFO L85 PathProgramCache]: Analyzing trace with hash 940724189, now seen corresponding path program 9 times [2024-06-28 03:42:19,887 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:19,887 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913972453] [2024-06-28 03:42:19,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:19,887 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:19,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:20,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:20,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:20,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913972453] [2024-06-28 03:42:20,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913972453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:20,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:20,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:20,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592956495] [2024-06-28 03:42:20,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:20,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:20,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:20,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:20,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:20,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:20,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 353 places, 296 transitions, 3471 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:20,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:20,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:20,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:21,298 INFO L124 PetriNetUnfolderBase]: 802/1430 cut-off events. [2024-06-28 03:42:21,298 INFO L125 PetriNetUnfolderBase]: For 138592/138592 co-relation queries the response was YES. [2024-06-28 03:42:21,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9608 conditions, 1430 events. 802/1430 cut-off events. For 138592/138592 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7836 event pairs, 140 based on Foata normal form. 2/1432 useless extension candidates. Maximal degree in co-relation 9454. Up to 1332 conditions per place. [2024-06-28 03:42:21,314 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 278 selfloop transitions, 34 changer transitions 0/314 dead transitions. [2024-06-28 03:42:21,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 363 places, 314 transitions, 4145 flow [2024-06-28 03:42:21,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:21,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:21,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 03:42:21,315 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 03:42:21,315 INFO L175 Difference]: Start difference. First operand has 353 places, 296 transitions, 3471 flow. Second operand 11 states and 116 transitions. [2024-06-28 03:42:21,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 363 places, 314 transitions, 4145 flow [2024-06-28 03:42:21,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 314 transitions, 4037 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:21,916 INFO L231 Difference]: Finished difference. Result has 355 places, 296 transitions, 3436 flow [2024-06-28 03:42:21,916 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3363, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3436, PETRI_PLACES=355, PETRI_TRANSITIONS=296} [2024-06-28 03:42:21,916 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 325 predicate places. [2024-06-28 03:42:21,916 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 296 transitions, 3436 flow [2024-06-28 03:42:21,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:21,916 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:21,916 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:21,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-28 03:42:21,917 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:21,917 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:21,917 INFO L85 PathProgramCache]: Analyzing trace with hash 121520365, now seen corresponding path program 10 times [2024-06-28 03:42:21,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:21,917 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279309012] [2024-06-28 03:42:21,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:21,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:22,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:22,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:22,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279309012] [2024-06-28 03:42:22,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279309012] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:22,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:22,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:22,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373316960] [2024-06-28 03:42:22,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:22,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:22,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:22,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:22,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:22,969 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:22,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 296 transitions, 3436 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:22,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:22,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:22,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:23,466 INFO L124 PetriNetUnfolderBase]: 806/1438 cut-off events. [2024-06-28 03:42:23,466 INFO L125 PetriNetUnfolderBase]: For 141050/141050 co-relation queries the response was YES. [2024-06-28 03:42:23,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9642 conditions, 1438 events. 806/1438 cut-off events. For 141050/141050 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7883 event pairs, 138 based on Foata normal form. 2/1440 useless extension candidates. Maximal degree in co-relation 9487. Up to 1260 conditions per place. [2024-06-28 03:42:23,478 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 261 selfloop transitions, 52 changer transitions 0/315 dead transitions. [2024-06-28 03:42:23,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 315 transitions, 4136 flow [2024-06-28 03:42:23,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:23,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:23,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 03:42:23,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 03:42:23,479 INFO L175 Difference]: Start difference. First operand has 355 places, 296 transitions, 3436 flow. Second operand 11 states and 120 transitions. [2024-06-28 03:42:23,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 315 transitions, 4136 flow [2024-06-28 03:42:24,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 315 transitions, 4065 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:24,140 INFO L231 Difference]: Finished difference. Result has 356 places, 297 transitions, 3499 flow [2024-06-28 03:42:24,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3365, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3499, PETRI_PLACES=356, PETRI_TRANSITIONS=297} [2024-06-28 03:42:24,140 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 326 predicate places. [2024-06-28 03:42:24,141 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 297 transitions, 3499 flow [2024-06-28 03:42:24,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:24,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:24,141 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:24,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-28 03:42:24,141 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:24,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:24,141 INFO L85 PathProgramCache]: Analyzing trace with hash 121515715, now seen corresponding path program 11 times [2024-06-28 03:42:24,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:24,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299661616] [2024-06-28 03:42:24,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:24,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:25,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:25,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:25,035 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299661616] [2024-06-28 03:42:25,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299661616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:25,035 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:25,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:25,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832917796] [2024-06-28 03:42:25,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:25,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:25,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:25,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:25,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:25,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:25,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 297 transitions, 3499 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:25,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:25,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:25,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:25,656 INFO L124 PetriNetUnfolderBase]: 810/1447 cut-off events. [2024-06-28 03:42:25,656 INFO L125 PetriNetUnfolderBase]: For 144147/144147 co-relation queries the response was YES. [2024-06-28 03:42:25,670 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9780 conditions, 1447 events. 810/1447 cut-off events. For 144147/144147 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7951 event pairs, 138 based on Foata normal form. 2/1449 useless extension candidates. Maximal degree in co-relation 9624. Up to 1254 conditions per place. [2024-06-28 03:42:25,674 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 261 selfloop transitions, 53 changer transitions 0/316 dead transitions. [2024-06-28 03:42:25,674 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 316 transitions, 4201 flow [2024-06-28 03:42:25,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:25,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:25,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 03:42:25,675 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:42:25,675 INFO L175 Difference]: Start difference. First operand has 356 places, 297 transitions, 3499 flow. Second operand 11 states and 121 transitions. [2024-06-28 03:42:25,675 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 316 transitions, 4201 flow [2024-06-28 03:42:26,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 316 transitions, 4077 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:26,291 INFO L231 Difference]: Finished difference. Result has 358 places, 298 transitions, 3513 flow [2024-06-28 03:42:26,291 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3375, PETRI_DIFFERENCE_MINUEND_PLACES=347, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3513, PETRI_PLACES=358, PETRI_TRANSITIONS=298} [2024-06-28 03:42:26,292 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 328 predicate places. [2024-06-28 03:42:26,292 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 298 transitions, 3513 flow [2024-06-28 03:42:26,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:26,292 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:26,292 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:26,292 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-28 03:42:26,292 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:26,292 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:26,292 INFO L85 PathProgramCache]: Analyzing trace with hash 121400395, now seen corresponding path program 12 times [2024-06-28 03:42:26,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:26,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884644871] [2024-06-28 03:42:26,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:26,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:26,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:27,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:27,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:27,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884644871] [2024-06-28 03:42:27,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884644871] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:27,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:27,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:27,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193250564] [2024-06-28 03:42:27,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:27,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:27,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:27,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:27,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:27,338 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:27,338 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 298 transitions, 3513 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:27,338 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:27,338 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:27,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:27,818 INFO L124 PetriNetUnfolderBase]: 821/1468 cut-off events. [2024-06-28 03:42:27,818 INFO L125 PetriNetUnfolderBase]: For 158716/158716 co-relation queries the response was YES. [2024-06-28 03:42:27,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10162 conditions, 1468 events. 821/1468 cut-off events. For 158716/158716 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8119 event pairs, 143 based on Foata normal form. 2/1470 useless extension candidates. Maximal degree in co-relation 10005. Up to 1232 conditions per place. [2024-06-28 03:42:27,834 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 262 selfloop transitions, 55 changer transitions 0/319 dead transitions. [2024-06-28 03:42:27,834 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 319 transitions, 4465 flow [2024-06-28 03:42:27,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:27,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:27,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 03:42:27,835 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:42:27,835 INFO L175 Difference]: Start difference. First operand has 358 places, 298 transitions, 3513 flow. Second operand 11 states and 121 transitions. [2024-06-28 03:42:27,835 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 319 transitions, 4465 flow [2024-06-28 03:42:28,498 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 359 places, 319 transitions, 4337 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:28,501 INFO L231 Difference]: Finished difference. Result has 360 places, 300 transitions, 3557 flow [2024-06-28 03:42:28,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3385, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3557, PETRI_PLACES=360, PETRI_TRANSITIONS=300} [2024-06-28 03:42:28,502 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 330 predicate places. [2024-06-28 03:42:28,502 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 300 transitions, 3557 flow [2024-06-28 03:42:28,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:28,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:28,502 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:28,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-28 03:42:28,502 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:28,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:28,502 INFO L85 PathProgramCache]: Analyzing trace with hash 298651885, now seen corresponding path program 13 times [2024-06-28 03:42:28,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:28,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518328788] [2024-06-28 03:42:28,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:28,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:29,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:29,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:29,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518328788] [2024-06-28 03:42:29,438 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518328788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:29,438 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:29,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:29,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8002700] [2024-06-28 03:42:29,438 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:29,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:29,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:29,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:29,439 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:29,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:29,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 300 transitions, 3557 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:29,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:29,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:29,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:29,968 INFO L124 PetriNetUnfolderBase]: 825/1476 cut-off events. [2024-06-28 03:42:29,968 INFO L125 PetriNetUnfolderBase]: For 161968/161968 co-relation queries the response was YES. [2024-06-28 03:42:29,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10236 conditions, 1476 events. 825/1476 cut-off events. For 161968/161968 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8195 event pairs, 133 based on Foata normal form. 2/1478 useless extension candidates. Maximal degree in co-relation 10078. Up to 1297 conditions per place. [2024-06-28 03:42:29,985 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 256 selfloop transitions, 61 changer transitions 0/319 dead transitions. [2024-06-28 03:42:29,986 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 370 places, 319 transitions, 4271 flow [2024-06-28 03:42:29,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:29,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:29,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-28 03:42:29,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3460410557184751 [2024-06-28 03:42:29,986 INFO L175 Difference]: Start difference. First operand has 360 places, 300 transitions, 3557 flow. Second operand 11 states and 118 transitions. [2024-06-28 03:42:29,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 370 places, 319 transitions, 4271 flow [2024-06-28 03:42:30,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 319 transitions, 4164 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 03:42:30,669 INFO L231 Difference]: Finished difference. Result has 364 places, 301 transitions, 3608 flow [2024-06-28 03:42:30,669 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3458, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=239, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3608, PETRI_PLACES=364, PETRI_TRANSITIONS=301} [2024-06-28 03:42:30,670 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 334 predicate places. [2024-06-28 03:42:30,670 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 301 transitions, 3608 flow [2024-06-28 03:42:30,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:30,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:30,670 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:30,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-28 03:42:30,670 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:30,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:30,671 INFO L85 PathProgramCache]: Analyzing trace with hash -1662357349, now seen corresponding path program 1 times [2024-06-28 03:42:30,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:30,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765272589] [2024-06-28 03:42:30,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:30,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:30,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:31,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:31,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:31,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765272589] [2024-06-28 03:42:31,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765272589] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:31,680 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:31,680 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:31,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850588542] [2024-06-28 03:42:31,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:31,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:31,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:31,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:31,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:31,798 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:31,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 301 transitions, 3608 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:31,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:31,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:31,798 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:32,370 INFO L124 PetriNetUnfolderBase]: 845/1520 cut-off events. [2024-06-28 03:42:32,371 INFO L125 PetriNetUnfolderBase]: For 221867/221867 co-relation queries the response was YES. [2024-06-28 03:42:32,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10502 conditions, 1520 events. 845/1520 cut-off events. For 221867/221867 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8482 event pairs, 143 based on Foata normal form. 12/1532 useless extension candidates. Maximal degree in co-relation 10342. Up to 1209 conditions per place. [2024-06-28 03:42:32,397 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 238 selfloop transitions, 71 changer transitions 15/326 dead transitions. [2024-06-28 03:42:32,397 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 326 transitions, 4380 flow [2024-06-28 03:42:32,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:42:32,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:42:32,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 03:42:32,398 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-28 03:42:32,398 INFO L175 Difference]: Start difference. First operand has 364 places, 301 transitions, 3608 flow. Second operand 12 states and 133 transitions. [2024-06-28 03:42:32,398 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 326 transitions, 4380 flow [2024-06-28 03:42:33,111 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 326 transitions, 4242 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:33,114 INFO L231 Difference]: Finished difference. Result has 367 places, 292 transitions, 3512 flow [2024-06-28 03:42:33,115 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3470, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=301, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3512, PETRI_PLACES=367, PETRI_TRANSITIONS=292} [2024-06-28 03:42:33,115 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 337 predicate places. [2024-06-28 03:42:33,115 INFO L495 AbstractCegarLoop]: Abstraction has has 367 places, 292 transitions, 3512 flow [2024-06-28 03:42:33,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:33,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:33,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:33,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-28 03:42:33,115 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:33,115 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:33,116 INFO L85 PathProgramCache]: Analyzing trace with hash 292222795, now seen corresponding path program 14 times [2024-06-28 03:42:33,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:33,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538343003] [2024-06-28 03:42:33,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:33,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:34,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:34,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:34,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538343003] [2024-06-28 03:42:34,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538343003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:34,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:34,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:34,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797044240] [2024-06-28 03:42:34,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:34,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:34,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:34,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:34,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:34,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:34,171 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 367 places, 292 transitions, 3512 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:34,171 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:34,171 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:34,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:34,627 INFO L124 PetriNetUnfolderBase]: 799/1454 cut-off events. [2024-06-28 03:42:34,628 INFO L125 PetriNetUnfolderBase]: For 167109/167109 co-relation queries the response was YES. [2024-06-28 03:42:34,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10152 conditions, 1454 events. 799/1454 cut-off events. For 167109/167109 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8202 event pairs, 141 based on Foata normal form. 2/1456 useless extension candidates. Maximal degree in co-relation 9991. Up to 1275 conditions per place. [2024-06-28 03:42:34,645 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 253 selfloop transitions, 56 changer transitions 0/311 dead transitions. [2024-06-28 03:42:34,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 311 transitions, 4204 flow [2024-06-28 03:42:34,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:34,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:34,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 03:42:34,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 03:42:34,646 INFO L175 Difference]: Start difference. First operand has 367 places, 292 transitions, 3512 flow. Second operand 11 states and 119 transitions. [2024-06-28 03:42:34,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 311 transitions, 4204 flow [2024-06-28 03:42:35,278 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 311 transitions, 3960 flow, removed 12 selfloop flow, removed 14 redundant places. [2024-06-28 03:42:35,281 INFO L231 Difference]: Finished difference. Result has 364 places, 293 transitions, 3410 flow [2024-06-28 03:42:35,281 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3268, PETRI_DIFFERENCE_MINUEND_PLACES=353, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=236, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3410, PETRI_PLACES=364, PETRI_TRANSITIONS=293} [2024-06-28 03:42:35,282 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 334 predicate places. [2024-06-28 03:42:35,282 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 293 transitions, 3410 flow [2024-06-28 03:42:35,282 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:35,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:35,282 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:35,282 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-28 03:42:35,283 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:35,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:35,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1370434543, now seen corresponding path program 15 times [2024-06-28 03:42:35,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:35,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644821881] [2024-06-28 03:42:35,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:35,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:36,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:36,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:36,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644821881] [2024-06-28 03:42:36,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644821881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:36,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:36,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:36,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1683963180] [2024-06-28 03:42:36,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:36,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:36,236 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:36,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:36,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:36,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:36,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 293 transitions, 3410 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:36,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:36,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:36,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:36,764 INFO L124 PetriNetUnfolderBase]: 796/1449 cut-off events. [2024-06-28 03:42:36,764 INFO L125 PetriNetUnfolderBase]: For 157131/157131 co-relation queries the response was YES. [2024-06-28 03:42:36,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9795 conditions, 1449 events. 796/1449 cut-off events. For 157131/157131 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8204 event pairs, 140 based on Foata normal form. 2/1451 useless extension candidates. Maximal degree in co-relation 9634. Up to 1250 conditions per place. [2024-06-28 03:42:36,781 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 251 selfloop transitions, 58 changer transitions 0/311 dead transitions. [2024-06-28 03:42:36,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 311 transitions, 4076 flow [2024-06-28 03:42:36,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:36,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:36,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-28 03:42:36,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489736070381232 [2024-06-28 03:42:36,782 INFO L175 Difference]: Start difference. First operand has 364 places, 293 transitions, 3410 flow. Second operand 11 states and 119 transitions. [2024-06-28 03:42:36,782 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 374 places, 311 transitions, 4076 flow [2024-06-28 03:42:37,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 311 transitions, 3932 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:37,448 INFO L231 Difference]: Finished difference. Result has 366 places, 293 transitions, 3386 flow [2024-06-28 03:42:37,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3266, PETRI_DIFFERENCE_MINUEND_PLACES=355, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3386, PETRI_PLACES=366, PETRI_TRANSITIONS=293} [2024-06-28 03:42:37,449 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-28 03:42:37,449 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 293 transitions, 3386 flow [2024-06-28 03:42:37,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:37,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:37,449 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:37,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-28 03:42:37,449 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:37,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:37,450 INFO L85 PathProgramCache]: Analyzing trace with hash 587622617, now seen corresponding path program 16 times [2024-06-28 03:42:37,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:37,450 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847913470] [2024-06-28 03:42:37,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:37,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:37,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:38,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:38,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:38,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847913470] [2024-06-28 03:42:38,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847913470] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:38,314 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:38,314 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:38,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550771890] [2024-06-28 03:42:38,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:38,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:38,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:38,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:38,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:38,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:38,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 293 transitions, 3386 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:38,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:38,397 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:38,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:38,844 INFO L124 PetriNetUnfolderBase]: 800/1456 cut-off events. [2024-06-28 03:42:38,844 INFO L125 PetriNetUnfolderBase]: For 159770/159770 co-relation queries the response was YES. [2024-06-28 03:42:38,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9836 conditions, 1456 events. 800/1456 cut-off events. For 159770/159770 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 8241 event pairs, 148 based on Foata normal form. 2/1458 useless extension candidates. Maximal degree in co-relation 9674. Up to 1256 conditions per place. [2024-06-28 03:42:38,857 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 273 selfloop transitions, 36 changer transitions 0/311 dead transitions. [2024-06-28 03:42:38,857 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 311 transitions, 4074 flow [2024-06-28 03:42:38,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:38,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:38,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-28 03:42:38,858 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3258064516129032 [2024-06-28 03:42:38,858 INFO L175 Difference]: Start difference. First operand has 366 places, 293 transitions, 3386 flow. Second operand 10 states and 101 transitions. [2024-06-28 03:42:38,858 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 311 transitions, 4074 flow [2024-06-28 03:42:39,521 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 311 transitions, 3940 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:39,524 INFO L231 Difference]: Finished difference. Result has 366 places, 294 transitions, 3366 flow [2024-06-28 03:42:39,524 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3252, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3366, PETRI_PLACES=366, PETRI_TRANSITIONS=294} [2024-06-28 03:42:39,525 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-28 03:42:39,525 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 294 transitions, 3366 flow [2024-06-28 03:42:39,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:39,525 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:39,525 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:39,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-28 03:42:39,526 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:39,526 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:39,526 INFO L85 PathProgramCache]: Analyzing trace with hash 645715067, now seen corresponding path program 17 times [2024-06-28 03:42:39,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:39,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368063539] [2024-06-28 03:42:39,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:39,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:39,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:40,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:40,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:40,468 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368063539] [2024-06-28 03:42:40,468 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368063539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:40,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:40,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:40,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538030120] [2024-06-28 03:42:40,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:40,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:40,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:40,469 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:40,469 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:40,560 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:40,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 294 transitions, 3366 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:40,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:40,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:40,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:41,000 INFO L124 PetriNetUnfolderBase]: 811/1477 cut-off events. [2024-06-28 03:42:41,000 INFO L125 PetriNetUnfolderBase]: For 175772/175772 co-relation queries the response was YES. [2024-06-28 03:42:41,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10245 conditions, 1477 events. 811/1477 cut-off events. For 175772/175772 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8421 event pairs, 160 based on Foata normal form. 2/1479 useless extension candidates. Maximal degree in co-relation 10082. Up to 1182 conditions per place. [2024-06-28 03:42:41,016 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 254 selfloop transitions, 58 changer transitions 0/314 dead transitions. [2024-06-28 03:42:41,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 314 transitions, 4324 flow [2024-06-28 03:42:41,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:41,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:41,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 03:42:41,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 03:42:41,017 INFO L175 Difference]: Start difference. First operand has 366 places, 294 transitions, 3366 flow. Second operand 10 states and 108 transitions. [2024-06-28 03:42:41,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 314 transitions, 4324 flow [2024-06-28 03:42:41,707 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 367 places, 314 transitions, 4208 flow, removed 26 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:41,710 INFO L231 Difference]: Finished difference. Result has 368 places, 296 transitions, 3446 flow [2024-06-28 03:42:41,710 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3268, PETRI_DIFFERENCE_MINUEND_PLACES=358, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3446, PETRI_PLACES=368, PETRI_TRANSITIONS=296} [2024-06-28 03:42:41,710 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 338 predicate places. [2024-06-28 03:42:41,711 INFO L495 AbstractCegarLoop]: Abstraction has has 368 places, 296 transitions, 3446 flow [2024-06-28 03:42:41,711 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:41,711 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:41,711 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:41,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-28 03:42:41,711 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:41,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:41,711 INFO L85 PathProgramCache]: Analyzing trace with hash 645835223, now seen corresponding path program 3 times [2024-06-28 03:42:41,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:41,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594719966] [2024-06-28 03:42:41,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:41,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:41,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:42,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:42,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:42,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594719966] [2024-06-28 03:42:42,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594719966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:42,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:42,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:42,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768143593] [2024-06-28 03:42:42,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:42,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:42,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:42,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:42,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:42,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:42,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 296 transitions, 3446 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:42,777 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:42,777 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:42,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:43,208 INFO L124 PetriNetUnfolderBase]: 808/1472 cut-off events. [2024-06-28 03:42:43,208 INFO L125 PetriNetUnfolderBase]: For 157221/157221 co-relation queries the response was YES. [2024-06-28 03:42:43,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10028 conditions, 1472 events. 808/1472 cut-off events. For 157221/157221 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 8368 event pairs, 171 based on Foata normal form. 1/1473 useless extension candidates. Maximal degree in co-relation 9864. Up to 1287 conditions per place. [2024-06-28 03:42:43,225 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 247 selfloop transitions, 64 changer transitions 0/313 dead transitions. [2024-06-28 03:42:43,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 313 transitions, 4116 flow [2024-06-28 03:42:43,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:43,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:43,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-28 03:42:43,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3419354838709677 [2024-06-28 03:42:43,226 INFO L175 Difference]: Start difference. First operand has 368 places, 296 transitions, 3446 flow. Second operand 10 states and 106 transitions. [2024-06-28 03:42:43,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 377 places, 313 transitions, 4116 flow [2024-06-28 03:42:43,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 313 transitions, 3996 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:43,837 INFO L231 Difference]: Finished difference. Result has 370 places, 296 transitions, 3470 flow [2024-06-28 03:42:43,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3326, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3470, PETRI_PLACES=370, PETRI_TRANSITIONS=296} [2024-06-28 03:42:43,838 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-28 03:42:43,838 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 296 transitions, 3470 flow [2024-06-28 03:42:43,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:43,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:43,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:43,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-28 03:42:43,839 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:43,839 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:43,839 INFO L85 PathProgramCache]: Analyzing trace with hash 645830387, now seen corresponding path program 18 times [2024-06-28 03:42:43,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:43,839 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542255178] [2024-06-28 03:42:43,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:43,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:43,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:44,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:44,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:44,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542255178] [2024-06-28 03:42:44,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542255178] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:44,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:44,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:44,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873498109] [2024-06-28 03:42:44,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:44,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:44,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:44,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:44,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:44,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:44,903 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 296 transitions, 3470 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:44,903 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:44,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:44,903 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:45,381 INFO L124 PetriNetUnfolderBase]: 812/1480 cut-off events. [2024-06-28 03:42:45,381 INFO L125 PetriNetUnfolderBase]: For 160014/160014 co-relation queries the response was YES. [2024-06-28 03:42:45,395 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10093 conditions, 1480 events. 812/1480 cut-off events. For 160014/160014 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8438 event pairs, 161 based on Foata normal form. 2/1482 useless extension candidates. Maximal degree in co-relation 9929. Up to 1253 conditions per place. [2024-06-28 03:42:45,398 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 254 selfloop transitions, 59 changer transitions 0/315 dead transitions. [2024-06-28 03:42:45,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 315 transitions, 4384 flow [2024-06-28 03:42:45,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:45,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:45,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:42:45,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 03:42:45,399 INFO L175 Difference]: Start difference. First operand has 370 places, 296 transitions, 3470 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:42:45,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 315 transitions, 4384 flow [2024-06-28 03:42:46,046 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 315 transitions, 4149 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:46,049 INFO L231 Difference]: Finished difference. Result has 370 places, 297 transitions, 3387 flow [2024-06-28 03:42:46,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3239, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=296, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3387, PETRI_PLACES=370, PETRI_TRANSITIONS=297} [2024-06-28 03:42:46,050 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-28 03:42:46,050 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 297 transitions, 3387 flow [2024-06-28 03:42:46,050 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:46,050 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:46,050 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:46,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-28 03:42:46,050 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:46,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:46,050 INFO L85 PathProgramCache]: Analyzing trace with hash 304412407, now seen corresponding path program 19 times [2024-06-28 03:42:46,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:46,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1915353514] [2024-06-28 03:42:46,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:46,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:47,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:47,055 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:47,055 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1915353514] [2024-06-28 03:42:47,055 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1915353514] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:47,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:47,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:47,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611609494] [2024-06-28 03:42:47,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:47,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:47,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:47,056 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:47,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:47,196 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:47,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 297 transitions, 3387 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:47,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:47,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:47,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:47,628 INFO L124 PetriNetUnfolderBase]: 809/1475 cut-off events. [2024-06-28 03:42:47,628 INFO L125 PetriNetUnfolderBase]: For 145049/145049 co-relation queries the response was YES. [2024-06-28 03:42:47,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9762 conditions, 1475 events. 809/1475 cut-off events. For 145049/145049 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 8428 event pairs, 169 based on Foata normal form. 2/1477 useless extension candidates. Maximal degree in co-relation 9597. Up to 1299 conditions per place. [2024-06-28 03:42:47,645 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 253 selfloop transitions, 59 changer transitions 0/314 dead transitions. [2024-06-28 03:42:47,645 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 314 transitions, 4057 flow [2024-06-28 03:42:47,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:47,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:47,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 03:42:47,646 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 03:42:47,646 INFO L175 Difference]: Start difference. First operand has 370 places, 297 transitions, 3387 flow. Second operand 10 states and 105 transitions. [2024-06-28 03:42:47,646 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 314 transitions, 4057 flow [2024-06-28 03:42:48,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 314 transitions, 3900 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:48,186 INFO L231 Difference]: Finished difference. Result has 370 places, 297 transitions, 3359 flow [2024-06-28 03:42:48,186 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3230, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3359, PETRI_PLACES=370, PETRI_TRANSITIONS=297} [2024-06-28 03:42:48,186 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-28 03:42:48,186 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 297 transitions, 3359 flow [2024-06-28 03:42:48,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:48,187 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:48,187 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:48,187 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-28 03:42:48,187 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:48,187 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:48,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1665319045, now seen corresponding path program 20 times [2024-06-28 03:42:48,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:48,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210350113] [2024-06-28 03:42:48,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:48,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:48,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:49,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:49,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:49,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210350113] [2024-06-28 03:42:49,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210350113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:49,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:49,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:49,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622637035] [2024-06-28 03:42:49,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:49,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:49,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:49,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:49,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:49,228 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:49,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 297 transitions, 3359 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:49,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:49,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:49,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:49,704 INFO L124 PetriNetUnfolderBase]: 813/1483 cut-off events. [2024-06-28 03:42:49,704 INFO L125 PetriNetUnfolderBase]: For 142271/142271 co-relation queries the response was YES. [2024-06-28 03:42:49,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9741 conditions, 1483 events. 813/1483 cut-off events. For 142271/142271 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 8499 event pairs, 128 based on Foata normal form. 2/1485 useless extension candidates. Maximal degree in co-relation 9577. Up to 1217 conditions per place. [2024-06-28 03:42:49,721 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 233 selfloop transitions, 79 changer transitions 0/314 dead transitions. [2024-06-28 03:42:49,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 314 transitions, 4051 flow [2024-06-28 03:42:49,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:49,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:49,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 03:42:49,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 03:42:49,722 INFO L175 Difference]: Start difference. First operand has 370 places, 297 transitions, 3359 flow. Second operand 10 states and 108 transitions. [2024-06-28 03:42:49,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 314 transitions, 4051 flow [2024-06-28 03:42:50,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 314 transitions, 3914 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:42:50,277 INFO L231 Difference]: Finished difference. Result has 369 places, 298 transitions, 3412 flow [2024-06-28 03:42:50,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3222, PETRI_DIFFERENCE_MINUEND_PLACES=359, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3412, PETRI_PLACES=369, PETRI_TRANSITIONS=298} [2024-06-28 03:42:50,277 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 339 predicate places. [2024-06-28 03:42:50,278 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 298 transitions, 3412 flow [2024-06-28 03:42:50,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:50,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:50,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:50,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-28 03:42:50,278 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:50,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:50,278 INFO L85 PathProgramCache]: Analyzing trace with hash -2006746325, now seen corresponding path program 21 times [2024-06-28 03:42:50,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:50,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590463429] [2024-06-28 03:42:50,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:50,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:51,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:51,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:51,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590463429] [2024-06-28 03:42:51,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590463429] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:51,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:51,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:51,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010071618] [2024-06-28 03:42:51,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:51,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:51,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:51,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:51,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:51,342 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:51,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 298 transitions, 3412 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:51,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:51,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:51,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:51,811 INFO L124 PetriNetUnfolderBase]: 824/1505 cut-off events. [2024-06-28 03:42:51,811 INFO L125 PetriNetUnfolderBase]: For 152103/152103 co-relation queries the response was YES. [2024-06-28 03:42:51,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10139 conditions, 1505 events. 824/1505 cut-off events. For 152103/152103 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8658 event pairs, 129 based on Foata normal form. 2/1507 useless extension candidates. Maximal degree in co-relation 9976. Up to 1195 conditions per place. [2024-06-28 03:42:51,837 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 232 selfloop transitions, 83 changer transitions 0/317 dead transitions. [2024-06-28 03:42:51,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 378 places, 317 transitions, 4352 flow [2024-06-28 03:42:51,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:51,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:51,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:42:51,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 03:42:51,839 INFO L175 Difference]: Start difference. First operand has 369 places, 298 transitions, 3412 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:42:51,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 378 places, 317 transitions, 4352 flow [2024-06-28 03:42:52,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 369 places, 317 transitions, 4172 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-28 03:42:52,555 INFO L231 Difference]: Finished difference. Result has 370 places, 300 transitions, 3460 flow [2024-06-28 03:42:52,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3234, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=298, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3460, PETRI_PLACES=370, PETRI_TRANSITIONS=300} [2024-06-28 03:42:52,555 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 340 predicate places. [2024-06-28 03:42:52,555 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 300 transitions, 3460 flow [2024-06-28 03:42:52,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:52,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:52,556 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:52,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-28 03:42:52,556 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:52,557 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:52,557 INFO L85 PathProgramCache]: Analyzing trace with hash -2000312585, now seen corresponding path program 22 times [2024-06-28 03:42:52,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:52,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297895099] [2024-06-28 03:42:52,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:52,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:52,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:53,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:53,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:53,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297895099] [2024-06-28 03:42:53,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [297895099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:53,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:53,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:53,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [865052679] [2024-06-28 03:42:53,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:53,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:53,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:53,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:53,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:53,602 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:53,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 300 transitions, 3460 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:53,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:53,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:53,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:54,058 INFO L124 PetriNetUnfolderBase]: 821/1500 cut-off events. [2024-06-28 03:42:54,059 INFO L125 PetriNetUnfolderBase]: For 140605/140605 co-relation queries the response was YES. [2024-06-28 03:42:54,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9881 conditions, 1500 events. 821/1500 cut-off events. For 140605/140605 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 8611 event pairs, 128 based on Foata normal form. 2/1502 useless extension candidates. Maximal degree in co-relation 9718. Up to 1233 conditions per place. [2024-06-28 03:42:54,073 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 227 selfloop transitions, 87 changer transitions 0/316 dead transitions. [2024-06-28 03:42:54,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 316 transitions, 4132 flow [2024-06-28 03:42:54,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:54,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:54,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:42:54,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34516129032258064 [2024-06-28 03:42:54,074 INFO L175 Difference]: Start difference. First operand has 370 places, 300 transitions, 3460 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:42:54,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 316 transitions, 4132 flow [2024-06-28 03:42:54,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 372 places, 316 transitions, 3986 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-28 03:42:54,583 INFO L231 Difference]: Finished difference. Result has 373 places, 300 transitions, 3494 flow [2024-06-28 03:42:54,583 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3314, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3494, PETRI_PLACES=373, PETRI_TRANSITIONS=300} [2024-06-28 03:42:54,583 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 343 predicate places. [2024-06-28 03:42:54,583 INFO L495 AbstractCegarLoop]: Abstraction has has 373 places, 300 transitions, 3494 flow [2024-06-28 03:42:54,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:54,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:54,584 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:54,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-28 03:42:54,584 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:54,584 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:54,584 INFO L85 PathProgramCache]: Analyzing trace with hash -1658643691, now seen corresponding path program 2 times [2024-06-28 03:42:54,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:54,584 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265942532] [2024-06-28 03:42:54,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:54,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:55,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:55,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:55,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265942532] [2024-06-28 03:42:55,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265942532] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:55,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:55,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:55,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287985067] [2024-06-28 03:42:55,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:55,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:55,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:55,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:55,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:55,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:55,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 373 places, 300 transitions, 3494 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:55,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:55,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:55,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:56,333 INFO L124 PetriNetUnfolderBase]: 825/1507 cut-off events. [2024-06-28 03:42:56,334 INFO L125 PetriNetUnfolderBase]: For 140235/140235 co-relation queries the response was YES. [2024-06-28 03:42:56,349 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10030 conditions, 1507 events. 825/1507 cut-off events. For 140235/140235 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 8701 event pairs, 206 based on Foata normal form. 2/1509 useless extension candidates. Maximal degree in co-relation 9866. Up to 1441 conditions per place. [2024-06-28 03:42:56,353 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 281 selfloop transitions, 32 changer transitions 0/315 dead transitions. [2024-06-28 03:42:56,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 315 transitions, 4186 flow [2024-06-28 03:42:56,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:42:56,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:42:56,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 106 transitions. [2024-06-28 03:42:56,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31085043988269795 [2024-06-28 03:42:56,354 INFO L175 Difference]: Start difference. First operand has 373 places, 300 transitions, 3494 flow. Second operand 11 states and 106 transitions. [2024-06-28 03:42:56,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 315 transitions, 4186 flow [2024-06-28 03:42:56,901 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 373 places, 315 transitions, 3998 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-28 03:42:56,904 INFO L231 Difference]: Finished difference. Result has 375 places, 302 transitions, 3422 flow [2024-06-28 03:42:56,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3306, PETRI_DIFFERENCE_MINUEND_PLACES=363, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3422, PETRI_PLACES=375, PETRI_TRANSITIONS=302} [2024-06-28 03:42:56,904 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 345 predicate places. [2024-06-28 03:42:56,905 INFO L495 AbstractCegarLoop]: Abstraction has has 375 places, 302 transitions, 3422 flow [2024-06-28 03:42:56,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:56,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:56,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:56,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-28 03:42:56,905 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:56,905 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:56,905 INFO L85 PathProgramCache]: Analyzing trace with hash -1836021475, now seen corresponding path program 23 times [2024-06-28 03:42:56,905 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:56,905 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261774338] [2024-06-28 03:42:56,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:56,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:57,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:57,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:57,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261774338] [2024-06-28 03:42:57,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [261774338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:57,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:57,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:57,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328173963] [2024-06-28 03:42:57,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:57,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:57,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:57,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:57,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:42:57,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:42:57,908 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 375 places, 302 transitions, 3422 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:57,908 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:42:57,908 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:42:57,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:42:58,415 INFO L124 PetriNetUnfolderBase]: 829/1515 cut-off events. [2024-06-28 03:42:58,415 INFO L125 PetriNetUnfolderBase]: For 140105/140105 co-relation queries the response was YES. [2024-06-28 03:42:58,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9956 conditions, 1515 events. 829/1515 cut-off events. For 140105/140105 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 8726 event pairs, 146 based on Foata normal form. 2/1517 useless extension candidates. Maximal degree in co-relation 9791. Up to 1249 conditions per place. [2024-06-28 03:42:58,432 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 244 selfloop transitions, 73 changer transitions 0/319 dead transitions. [2024-06-28 03:42:58,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 384 places, 319 transitions, 4128 flow [2024-06-28 03:42:58,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:42:58,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:42:58,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:42:58,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 03:42:58,433 INFO L175 Difference]: Start difference. First operand has 375 places, 302 transitions, 3422 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:42:58,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 384 places, 319 transitions, 4128 flow [2024-06-28 03:42:58,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 319 transitions, 4046 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:42:58,950 INFO L231 Difference]: Finished difference. Result has 377 places, 303 transitions, 3522 flow [2024-06-28 03:42:58,950 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3340, PETRI_DIFFERENCE_MINUEND_PLACES=367, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=302, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3522, PETRI_PLACES=377, PETRI_TRANSITIONS=303} [2024-06-28 03:42:58,950 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2024-06-28 03:42:58,951 INFO L495 AbstractCegarLoop]: Abstraction has has 377 places, 303 transitions, 3522 flow [2024-06-28 03:42:58,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:42:58,951 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:42:58,951 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:42:58,951 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-28 03:42:58,951 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:42:58,951 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:42:58,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1836026125, now seen corresponding path program 24 times [2024-06-28 03:42:58,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:42:58,951 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010339277] [2024-06-28 03:42:58,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:42:58,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:42:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:42:59,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:42:59,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:42:59,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010339277] [2024-06-28 03:42:59,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010339277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:42:59,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:42:59,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:42:59,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128871875] [2024-06-28 03:42:59,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:42:59,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:42:59,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:42:59,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:42:59,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:00,057 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:00,057 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 303 transitions, 3522 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:00,057 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:00,057 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:00,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:00,575 INFO L124 PetriNetUnfolderBase]: 833/1523 cut-off events. [2024-06-28 03:43:00,575 INFO L125 PetriNetUnfolderBase]: For 140600/140600 co-relation queries the response was YES. [2024-06-28 03:43:00,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10106 conditions, 1523 events. 833/1523 cut-off events. For 140600/140600 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 8822 event pairs, 163 based on Foata normal form. 2/1525 useless extension candidates. Maximal degree in co-relation 9940. Up to 1362 conditions per place. [2024-06-28 03:43:00,593 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 272 selfloop transitions, 45 changer transitions 0/319 dead transitions. [2024-06-28 03:43:00,593 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 319 transitions, 4226 flow [2024-06-28 03:43:00,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:00,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:00,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 03:43:00,594 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 03:43:00,594 INFO L175 Difference]: Start difference. First operand has 377 places, 303 transitions, 3522 flow. Second operand 11 states and 120 transitions. [2024-06-28 03:43:00,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 387 places, 319 transitions, 4226 flow [2024-06-28 03:43:01,144 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 319 transitions, 4056 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:43:01,148 INFO L231 Difference]: Finished difference. Result has 380 places, 304 transitions, 3478 flow [2024-06-28 03:43:01,148 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3354, PETRI_DIFFERENCE_MINUEND_PLACES=369, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=303, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3478, PETRI_PLACES=380, PETRI_TRANSITIONS=304} [2024-06-28 03:43:01,148 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 350 predicate places. [2024-06-28 03:43:01,148 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 304 transitions, 3478 flow [2024-06-28 03:43:01,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:01,148 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:01,148 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:01,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-28 03:43:01,148 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:01,149 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:01,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1836141445, now seen corresponding path program 25 times [2024-06-28 03:43:01,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:01,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [601511314] [2024-06-28 03:43:01,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:01,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:01,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:02,054 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:02,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:02,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [601511314] [2024-06-28 03:43:02,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [601511314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:02,054 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:02,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:02,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322305142] [2024-06-28 03:43:02,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:02,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:02,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:02,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:02,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:02,125 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:02,126 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 304 transitions, 3478 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:02,126 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:02,126 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:02,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:02,573 INFO L124 PetriNetUnfolderBase]: 837/1532 cut-off events. [2024-06-28 03:43:02,573 INFO L125 PetriNetUnfolderBase]: For 140499/140499 co-relation queries the response was YES. [2024-06-28 03:43:02,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10066 conditions, 1532 events. 837/1532 cut-off events. For 140499/140499 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 8861 event pairs, 148 based on Foata normal form. 2/1534 useless extension candidates. Maximal degree in co-relation 9899. Up to 1141 conditions per place. [2024-06-28 03:43:02,590 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 236 selfloop transitions, 83 changer transitions 0/321 dead transitions. [2024-06-28 03:43:02,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 321 transitions, 4186 flow [2024-06-28 03:43:02,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:02,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:02,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:43:02,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 03:43:02,591 INFO L175 Difference]: Start difference. First operand has 380 places, 304 transitions, 3478 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:43:02,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 321 transitions, 4186 flow [2024-06-28 03:43:03,190 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 379 places, 321 transitions, 4066 flow, removed 16 selfloop flow, removed 10 redundant places. [2024-06-28 03:43:03,193 INFO L231 Difference]: Finished difference. Result has 380 places, 305 transitions, 3562 flow [2024-06-28 03:43:03,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3358, PETRI_DIFFERENCE_MINUEND_PLACES=370, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3562, PETRI_PLACES=380, PETRI_TRANSITIONS=305} [2024-06-28 03:43:03,194 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 350 predicate places. [2024-06-28 03:43:03,194 INFO L495 AbstractCegarLoop]: Abstraction has has 380 places, 305 transitions, 3562 flow [2024-06-28 03:43:03,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:03,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:03,194 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:03,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-28 03:43:03,194 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:03,194 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:03,194 INFO L85 PathProgramCache]: Analyzing trace with hash 10613603, now seen corresponding path program 26 times [2024-06-28 03:43:03,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:03,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210780410] [2024-06-28 03:43:03,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:03,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:04,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:04,112 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210780410] [2024-06-28 03:43:04,112 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210780410] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:04,112 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:04,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:04,113 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593592864] [2024-06-28 03:43:04,113 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:04,113 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:04,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:04,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:04,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:04,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:04,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 380 places, 305 transitions, 3562 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:04,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:04,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:04,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:04,637 INFO L124 PetriNetUnfolderBase]: 841/1540 cut-off events. [2024-06-28 03:43:04,637 INFO L125 PetriNetUnfolderBase]: For 143613/143613 co-relation queries the response was YES. [2024-06-28 03:43:04,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10227 conditions, 1540 events. 841/1540 cut-off events. For 143613/143613 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 8919 event pairs, 118 based on Foata normal form. 2/1542 useless extension candidates. Maximal degree in co-relation 10061. Up to 1184 conditions per place. [2024-06-28 03:43:04,652 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 205 selfloop transitions, 113 changer transitions 0/320 dead transitions. [2024-06-28 03:43:04,652 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 320 transitions, 4268 flow [2024-06-28 03:43:04,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:04,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:04,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-28 03:43:04,653 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34838709677419355 [2024-06-28 03:43:04,653 INFO L175 Difference]: Start difference. First operand has 380 places, 305 transitions, 3562 flow. Second operand 10 states and 108 transitions. [2024-06-28 03:43:04,653 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 389 places, 320 transitions, 4268 flow [2024-06-28 03:43:05,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 380 places, 320 transitions, 4076 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-28 03:43:05,253 INFO L231 Difference]: Finished difference. Result has 381 places, 306 transitions, 3634 flow [2024-06-28 03:43:05,253 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3370, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=192, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3634, PETRI_PLACES=381, PETRI_TRANSITIONS=306} [2024-06-28 03:43:05,253 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 351 predicate places. [2024-06-28 03:43:05,253 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 306 transitions, 3634 flow [2024-06-28 03:43:05,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:05,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:05,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:05,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-28 03:43:05,253 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:05,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:05,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1698273301, now seen corresponding path program 1 times [2024-06-28 03:43:05,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:05,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6821599] [2024-06-28 03:43:05,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:05,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:06,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:06,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6821599] [2024-06-28 03:43:06,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6821599] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:06,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:06,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:06,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821116870] [2024-06-28 03:43:06,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:06,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:06,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:06,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:06,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:06,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:06,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 306 transitions, 3634 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:06,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:06,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:06,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:06,918 INFO L124 PetriNetUnfolderBase]: 847/1549 cut-off events. [2024-06-28 03:43:06,918 INFO L125 PetriNetUnfolderBase]: For 143115/143115 co-relation queries the response was YES. [2024-06-28 03:43:06,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10337 conditions, 1549 events. 847/1549 cut-off events. For 143115/143115 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9009 event pairs, 118 based on Foata normal form. 2/1551 useless extension candidates. Maximal degree in co-relation 10171. Up to 1006 conditions per place. [2024-06-28 03:43:06,936 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 186 selfloop transitions, 140 changer transitions 0/328 dead transitions. [2024-06-28 03:43:06,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 328 transitions, 4404 flow [2024-06-28 03:43:06,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:06,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:06,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:43:06,937 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 03:43:06,937 INFO L175 Difference]: Start difference. First operand has 381 places, 306 transitions, 3634 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:43:06,937 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 391 places, 328 transitions, 4404 flow [2024-06-28 03:43:07,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 383 places, 328 transitions, 4150 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 03:43:07,543 INFO L231 Difference]: Finished difference. Result has 386 places, 311 transitions, 3822 flow [2024-06-28 03:43:07,543 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3380, PETRI_DIFFERENCE_MINUEND_PLACES=373, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=135, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3822, PETRI_PLACES=386, PETRI_TRANSITIONS=311} [2024-06-28 03:43:07,543 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 356 predicate places. [2024-06-28 03:43:07,543 INFO L495 AbstractCegarLoop]: Abstraction has has 386 places, 311 transitions, 3822 flow [2024-06-28 03:43:07,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:07,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:07,544 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:07,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-28 03:43:07,544 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:07,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:07,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1706325551, now seen corresponding path program 3 times [2024-06-28 03:43:07,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:07,545 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615237644] [2024-06-28 03:43:07,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:07,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:07,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:08,669 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:08,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:08,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615237644] [2024-06-28 03:43:08,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615237644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:08,669 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:08,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:08,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209385229] [2024-06-28 03:43:08,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:08,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:08,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:08,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:08,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:08,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:08,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 386 places, 311 transitions, 3822 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:08,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:08,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:08,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:09,344 INFO L124 PetriNetUnfolderBase]: 867/1594 cut-off events. [2024-06-28 03:43:09,345 INFO L125 PetriNetUnfolderBase]: For 203517/203517 co-relation queries the response was YES. [2024-06-28 03:43:09,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10736 conditions, 1594 events. 867/1594 cut-off events. For 203517/203517 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9294 event pairs, 307 based on Foata normal form. 12/1606 useless extension candidates. Maximal degree in co-relation 10567. Up to 1500 conditions per place. [2024-06-28 03:43:09,363 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 301 selfloop transitions, 18 changer transitions 8/329 dead transitions. [2024-06-28 03:43:09,363 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 396 places, 329 transitions, 4578 flow [2024-06-28 03:43:09,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:09,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:09,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-28 03:43:09,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-28 03:43:09,364 INFO L175 Difference]: Start difference. First operand has 386 places, 311 transitions, 3822 flow. Second operand 11 states and 111 transitions. [2024-06-28 03:43:09,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 396 places, 329 transitions, 4578 flow [2024-06-28 03:43:10,045 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 389 places, 329 transitions, 4346 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-28 03:43:10,049 INFO L231 Difference]: Finished difference. Result has 390 places, 309 transitions, 3627 flow [2024-06-28 03:43:10,049 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3590, PETRI_DIFFERENCE_MINUEND_PLACES=379, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3627, PETRI_PLACES=390, PETRI_TRANSITIONS=309} [2024-06-28 03:43:10,049 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 360 predicate places. [2024-06-28 03:43:10,049 INFO L495 AbstractCegarLoop]: Abstraction has has 390 places, 309 transitions, 3627 flow [2024-06-28 03:43:10,049 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:10,049 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:10,049 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:10,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-28 03:43:10,050 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:10,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:10,050 INFO L85 PathProgramCache]: Analyzing trace with hash 547960041, now seen corresponding path program 2 times [2024-06-28 03:43:10,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:10,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683227671] [2024-06-28 03:43:10,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:10,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:10,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:10,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:10,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:10,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683227671] [2024-06-28 03:43:10,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683227671] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:10,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:10,999 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:43:10,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869549100] [2024-06-28 03:43:10,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:11,000 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:43:11,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:11,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:43:11,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:43:11,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:11,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 390 places, 309 transitions, 3627 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:11,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:11,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:11,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:11,508 INFO L124 PetriNetUnfolderBase]: 837/1538 cut-off events. [2024-06-28 03:43:11,508 INFO L125 PetriNetUnfolderBase]: For 136227/136227 co-relation queries the response was YES. [2024-06-28 03:43:11,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9996 conditions, 1538 events. 837/1538 cut-off events. For 136227/136227 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8972 event pairs, 118 based on Foata normal form. 2/1540 useless extension candidates. Maximal degree in co-relation 9826. Up to 983 conditions per place. [2024-06-28 03:43:11,523 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 180 selfloop transitions, 142 changer transitions 0/324 dead transitions. [2024-06-28 03:43:11,523 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 324 transitions, 4315 flow [2024-06-28 03:43:11,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:11,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:11,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-28 03:43:11,524 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709677419354839 [2024-06-28 03:43:11,524 INFO L175 Difference]: Start difference. First operand has 390 places, 309 transitions, 3627 flow. Second operand 10 states and 115 transitions. [2024-06-28 03:43:11,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 324 transitions, 4315 flow [2024-06-28 03:43:12,094 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 390 places, 324 transitions, 4223 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-28 03:43:12,098 INFO L231 Difference]: Finished difference. Result has 391 places, 309 transitions, 3830 flow [2024-06-28 03:43:12,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3535, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=142, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3830, PETRI_PLACES=391, PETRI_TRANSITIONS=309} [2024-06-28 03:43:12,098 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-06-28 03:43:12,098 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 309 transitions, 3830 flow [2024-06-28 03:43:12,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:12,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:12,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:12,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-28 03:43:12,098 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:12,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:12,099 INFO L85 PathProgramCache]: Analyzing trace with hash 1698281981, now seen corresponding path program 4 times [2024-06-28 03:43:12,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:12,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938262355] [2024-06-28 03:43:12,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:12,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:12,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:13,186 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:13,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:13,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938262355] [2024-06-28 03:43:13,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938262355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:13,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:13,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:13,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930932088] [2024-06-28 03:43:13,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:13,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:13,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:13,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:13,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:13,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:13,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 309 transitions, 3830 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:13,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:13,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:13,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:13,783 INFO L124 PetriNetUnfolderBase]: 857/1581 cut-off events. [2024-06-28 03:43:13,783 INFO L125 PetriNetUnfolderBase]: For 198057/198057 co-relation queries the response was YES. [2024-06-28 03:43:13,794 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10470 conditions, 1581 events. 857/1581 cut-off events. For 198057/198057 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 9215 event pairs, 122 based on Foata normal form. 12/1593 useless extension candidates. Maximal degree in co-relation 10299. Up to 973 conditions per place. [2024-06-28 03:43:13,797 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 181 selfloop transitions, 137 changer transitions 11/331 dead transitions. [2024-06-28 03:43:13,798 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 331 transitions, 4608 flow [2024-06-28 03:43:13,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:13,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:13,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 03:43:13,798 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 03:43:13,798 INFO L175 Difference]: Start difference. First operand has 391 places, 309 transitions, 3830 flow. Second operand 11 states and 127 transitions. [2024-06-28 03:43:13,798 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 331 transitions, 4608 flow [2024-06-28 03:43:14,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 331 transitions, 4298 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:43:14,408 INFO L231 Difference]: Finished difference. Result has 392 places, 304 transitions, 3764 flow [2024-06-28 03:43:14,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3520, PETRI_DIFFERENCE_MINUEND_PLACES=381, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=309, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=136, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3764, PETRI_PLACES=392, PETRI_TRANSITIONS=304} [2024-06-28 03:43:14,408 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-28 03:43:14,408 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 304 transitions, 3764 flow [2024-06-28 03:43:14,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:14,408 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:14,408 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:14,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-28 03:43:14,409 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:14,409 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:14,409 INFO L85 PathProgramCache]: Analyzing trace with hash 1912102125, now seen corresponding path program 5 times [2024-06-28 03:43:14,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:14,409 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124199596] [2024-06-28 03:43:14,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:14,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:14,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:15,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:15,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:15,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124199596] [2024-06-28 03:43:15,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124199596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:15,735 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:15,735 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:15,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [321027233] [2024-06-28 03:43:15,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:15,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:15,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:15,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:15,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:15,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:15,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 304 transitions, 3764 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:15,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:15,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:15,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:16,383 INFO L124 PetriNetUnfolderBase]: 825/1526 cut-off events. [2024-06-28 03:43:16,383 INFO L125 PetriNetUnfolderBase]: For 134905/134905 co-relation queries the response was YES. [2024-06-28 03:43:16,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10188 conditions, 1526 events. 825/1526 cut-off events. For 134905/134905 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 8980 event pairs, 300 based on Foata normal form. 2/1528 useless extension candidates. Maximal degree in co-relation 10028. Up to 1476 conditions per place. [2024-06-28 03:43:16,403 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 292 selfloop transitions, 23 changer transitions 0/317 dead transitions. [2024-06-28 03:43:16,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 317 transitions, 4452 flow [2024-06-28 03:43:16,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:43:16,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:43:16,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 111 transitions. [2024-06-28 03:43:16,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29838709677419356 [2024-06-28 03:43:16,404 INFO L175 Difference]: Start difference. First operand has 392 places, 304 transitions, 3764 flow. Second operand 12 states and 111 transitions. [2024-06-28 03:43:16,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 317 transitions, 4452 flow [2024-06-28 03:43:16,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 317 transitions, 4146 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-28 03:43:16,964 INFO L231 Difference]: Finished difference. Result has 392 places, 305 transitions, 3544 flow [2024-06-28 03:43:16,964 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3458, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3544, PETRI_PLACES=392, PETRI_TRANSITIONS=305} [2024-06-28 03:43:16,964 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-28 03:43:16,964 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 305 transitions, 3544 flow [2024-06-28 03:43:16,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:16,965 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:16,965 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:16,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-28 03:43:16,965 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:16,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:16,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1912458315, now seen corresponding path program 6 times [2024-06-28 03:43:16,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:16,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [618292887] [2024-06-28 03:43:16,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:16,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:16,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:18,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:18,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:18,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [618292887] [2024-06-28 03:43:18,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [618292887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:18,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:18,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:18,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828642680] [2024-06-28 03:43:18,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:18,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:18,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:18,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:18,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:18,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:18,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 305 transitions, 3544 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:18,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:18,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:18,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:18,619 INFO L124 PetriNetUnfolderBase]: 829/1534 cut-off events. [2024-06-28 03:43:18,619 INFO L125 PetriNetUnfolderBase]: For 136593/136593 co-relation queries the response was YES. [2024-06-28 03:43:18,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9956 conditions, 1534 events. 829/1534 cut-off events. For 136593/136593 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9011 event pairs, 298 based on Foata normal form. 2/1536 useless extension candidates. Maximal degree in co-relation 9796. Up to 1464 conditions per place. [2024-06-28 03:43:18,636 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 294 selfloop transitions, 24 changer transitions 0/320 dead transitions. [2024-06-28 03:43:18,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 320 transitions, 4246 flow [2024-06-28 03:43:18,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:43:18,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:43:18,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 114 transitions. [2024-06-28 03:43:18,641 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3064516129032258 [2024-06-28 03:43:18,641 INFO L175 Difference]: Start difference. First operand has 392 places, 305 transitions, 3544 flow. Second operand 12 states and 114 transitions. [2024-06-28 03:43:18,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 320 transitions, 4246 flow [2024-06-28 03:43:19,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 320 transitions, 4170 flow, removed 17 selfloop flow, removed 10 redundant places. [2024-06-28 03:43:19,278 INFO L231 Difference]: Finished difference. Result has 394 places, 306 transitions, 3556 flow [2024-06-28 03:43:19,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3470, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=305, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=281, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3556, PETRI_PLACES=394, PETRI_TRANSITIONS=306} [2024-06-28 03:43:19,279 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 364 predicate places. [2024-06-28 03:43:19,279 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 306 transitions, 3556 flow [2024-06-28 03:43:19,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:19,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:19,279 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:19,280 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-28 03:43:19,280 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:19,280 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:19,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1958512797, now seen corresponding path program 27 times [2024-06-28 03:43:19,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:19,281 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743768439] [2024-06-28 03:43:19,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:19,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:19,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:20,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:20,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:20,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743768439] [2024-06-28 03:43:20,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743768439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:20,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:20,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:20,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068067303] [2024-06-28 03:43:20,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:20,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:20,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:20,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:20,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:20,359 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:20,360 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 306 transitions, 3556 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:20,360 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:20,360 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:20,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:20,750 INFO L124 PetriNetUnfolderBase]: 833/1541 cut-off events. [2024-06-28 03:43:20,750 INFO L125 PetriNetUnfolderBase]: For 136715/136715 co-relation queries the response was YES. [2024-06-28 03:43:20,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9990 conditions, 1541 events. 833/1541 cut-off events. For 136715/136715 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9080 event pairs, 121 based on Foata normal form. 2/1543 useless extension candidates. Maximal degree in co-relation 9829. Up to 1186 conditions per place. [2024-06-28 03:43:20,770 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 222 selfloop transitions, 98 changer transitions 0/322 dead transitions. [2024-06-28 03:43:20,770 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 322 transitions, 4272 flow [2024-06-28 03:43:20,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:20,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 03:43:20,771 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 03:43:20,771 INFO L175 Difference]: Start difference. First operand has 394 places, 306 transitions, 3556 flow. Second operand 10 states and 111 transitions. [2024-06-28 03:43:20,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 322 transitions, 4272 flow [2024-06-28 03:43:21,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 393 places, 322 transitions, 4196 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-28 03:43:21,359 INFO L231 Difference]: Finished difference. Result has 394 places, 307 transitions, 3716 flow [2024-06-28 03:43:21,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3480, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=306, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=97, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3716, PETRI_PLACES=394, PETRI_TRANSITIONS=307} [2024-06-28 03:43:21,359 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 364 predicate places. [2024-06-28 03:43:21,359 INFO L495 AbstractCegarLoop]: Abstraction has has 394 places, 307 transitions, 3716 flow [2024-06-28 03:43:21,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:21,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:21,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:21,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-28 03:43:21,360 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:21,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:21,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1928185851, now seen corresponding path program 28 times [2024-06-28 03:43:21,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:21,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457154504] [2024-06-28 03:43:21,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:21,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:22,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:22,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:22,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457154504] [2024-06-28 03:43:22,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457154504] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:22,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:22,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:22,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996456644] [2024-06-28 03:43:22,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:22,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:22,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:22,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:22,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:22,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:22,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 394 places, 307 transitions, 3716 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:22,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:22,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:22,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:22,785 INFO L124 PetriNetUnfolderBase]: 837/1549 cut-off events. [2024-06-28 03:43:22,785 INFO L125 PetriNetUnfolderBase]: For 139846/139846 co-relation queries the response was YES. [2024-06-28 03:43:22,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10237 conditions, 1549 events. 837/1549 cut-off events. For 139846/139846 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9181 event pairs, 141 based on Foata normal form. 2/1551 useless extension candidates. Maximal degree in co-relation 10075. Up to 1194 conditions per place. [2024-06-28 03:43:22,804 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 232 selfloop transitions, 89 changer transitions 0/323 dead transitions. [2024-06-28 03:43:22,804 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 323 transitions, 4436 flow [2024-06-28 03:43:22,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:22,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:22,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 03:43:22,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36129032258064514 [2024-06-28 03:43:22,804 INFO L175 Difference]: Start difference. First operand has 394 places, 307 transitions, 3716 flow. Second operand 10 states and 112 transitions. [2024-06-28 03:43:22,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 323 transitions, 4436 flow [2024-06-28 03:43:23,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 395 places, 323 transitions, 4210 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 03:43:23,491 INFO L231 Difference]: Finished difference. Result has 396 places, 308 transitions, 3710 flow [2024-06-28 03:43:23,491 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3490, PETRI_DIFFERENCE_MINUEND_PLACES=386, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=218, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3710, PETRI_PLACES=396, PETRI_TRANSITIONS=308} [2024-06-28 03:43:23,492 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 366 predicate places. [2024-06-28 03:43:23,492 INFO L495 AbstractCegarLoop]: Abstraction has has 396 places, 308 transitions, 3710 flow [2024-06-28 03:43:23,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:23,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:23,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:23,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-28 03:43:23,492 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:23,492 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:23,492 INFO L85 PathProgramCache]: Analyzing trace with hash -1958505853, now seen corresponding path program 3 times [2024-06-28 03:43:23,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:23,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420853685] [2024-06-28 03:43:23,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:23,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:23,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:24,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:24,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:24,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420853685] [2024-06-28 03:43:24,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420853685] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:24,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:24,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:24,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235396306] [2024-06-28 03:43:24,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:24,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:24,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:24,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:24,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:24,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:24,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 396 places, 308 transitions, 3710 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:24,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:24,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:24,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:25,166 INFO L124 PetriNetUnfolderBase]: 843/1559 cut-off events. [2024-06-28 03:43:25,167 INFO L125 PetriNetUnfolderBase]: For 141909/141909 co-relation queries the response was YES. [2024-06-28 03:43:25,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10246 conditions, 1559 events. 843/1559 cut-off events. For 141909/141909 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 9203 event pairs, 132 based on Foata normal form. 2/1561 useless extension candidates. Maximal degree in co-relation 10083. Up to 1016 conditions per place. [2024-06-28 03:43:25,185 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 203 selfloop transitions, 122 changer transitions 0/327 dead transitions. [2024-06-28 03:43:25,186 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 406 places, 327 transitions, 4454 flow [2024-06-28 03:43:25,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:25,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:25,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 03:43:25,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 03:43:25,186 INFO L175 Difference]: Start difference. First operand has 396 places, 308 transitions, 3710 flow. Second operand 11 states and 125 transitions. [2024-06-28 03:43:25,187 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 406 places, 327 transitions, 4454 flow [2024-06-28 03:43:25,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 398 places, 327 transitions, 4244 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 03:43:25,819 INFO L231 Difference]: Finished difference. Result has 399 places, 310 transitions, 3797 flow [2024-06-28 03:43:25,819 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3500, PETRI_DIFFERENCE_MINUEND_PLACES=388, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=308, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=120, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=186, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3797, PETRI_PLACES=399, PETRI_TRANSITIONS=310} [2024-06-28 03:43:25,819 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 369 predicate places. [2024-06-28 03:43:25,819 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 310 transitions, 3797 flow [2024-06-28 03:43:25,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:25,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:25,819 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:25,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-28 03:43:25,820 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:25,820 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:25,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1958275213, now seen corresponding path program 4 times [2024-06-28 03:43:25,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:25,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671088758] [2024-06-28 03:43:25,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:25,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:27,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:27,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:27,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671088758] [2024-06-28 03:43:27,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671088758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:27,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:27,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:27,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497338837] [2024-06-28 03:43:27,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:27,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:27,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:27,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:27,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:27,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:27,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 310 transitions, 3797 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:27,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:27,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:27,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:27,523 INFO L124 PetriNetUnfolderBase]: 849/1569 cut-off events. [2024-06-28 03:43:27,523 INFO L125 PetriNetUnfolderBase]: For 144195/144195 co-relation queries the response was YES. [2024-06-28 03:43:27,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10358 conditions, 1569 events. 849/1569 cut-off events. For 144195/144195 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9279 event pairs, 132 based on Foata normal form. 2/1571 useless extension candidates. Maximal degree in co-relation 10194. Up to 1026 conditions per place. [2024-06-28 03:43:27,542 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 204 selfloop transitions, 123 changer transitions 0/329 dead transitions. [2024-06-28 03:43:27,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 409 places, 329 transitions, 4549 flow [2024-06-28 03:43:27,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:27,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:27,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 03:43:27,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 03:43:27,543 INFO L175 Difference]: Start difference. First operand has 399 places, 310 transitions, 3797 flow. Second operand 11 states and 124 transitions. [2024-06-28 03:43:27,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 409 places, 329 transitions, 4549 flow [2024-06-28 03:43:28,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 329 transitions, 4361 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-28 03:43:28,202 INFO L231 Difference]: Finished difference. Result has 403 places, 312 transitions, 3912 flow [2024-06-28 03:43:28,202 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3609, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=310, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=121, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3912, PETRI_PLACES=403, PETRI_TRANSITIONS=312} [2024-06-28 03:43:28,202 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 373 predicate places. [2024-06-28 03:43:28,202 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 312 transitions, 3912 flow [2024-06-28 03:43:28,202 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:28,202 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:28,202 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:28,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-28 03:43:28,203 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:28,203 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:28,203 INFO L85 PathProgramCache]: Analyzing trace with hash 326554321, now seen corresponding path program 7 times [2024-06-28 03:43:28,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:28,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796008958] [2024-06-28 03:43:28,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:28,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:29,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:29,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:29,386 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796008958] [2024-06-28 03:43:29,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796008958] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:29,387 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:29,387 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:29,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892530321] [2024-06-28 03:43:29,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:29,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:29,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:29,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:29,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:29,513 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:29,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 312 transitions, 3912 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:29,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:29,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:29,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:29,918 INFO L124 PetriNetUnfolderBase]: 853/1577 cut-off events. [2024-06-28 03:43:29,918 INFO L125 PetriNetUnfolderBase]: For 147702/147702 co-relation queries the response was YES. [2024-06-28 03:43:29,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10492 conditions, 1577 events. 853/1577 cut-off events. For 147702/147702 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 9348 event pairs, 216 based on Foata normal form. 2/1579 useless extension candidates. Maximal degree in co-relation 10327. Up to 1478 conditions per place. [2024-06-28 03:43:29,938 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 277 selfloop transitions, 45 changer transitions 0/324 dead transitions. [2024-06-28 03:43:29,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 413 places, 324 transitions, 4614 flow [2024-06-28 03:43:29,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:29,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:29,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-28 03:43:29,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 03:43:29,939 INFO L175 Difference]: Start difference. First operand has 403 places, 312 transitions, 3912 flow. Second operand 11 states and 110 transitions. [2024-06-28 03:43:29,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 413 places, 324 transitions, 4614 flow [2024-06-28 03:43:30,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 324 transitions, 4336 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 03:43:30,552 INFO L231 Difference]: Finished difference. Result has 405 places, 313 transitions, 3764 flow [2024-06-28 03:43:30,552 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3634, PETRI_DIFFERENCE_MINUEND_PLACES=394, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=312, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=267, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3764, PETRI_PLACES=405, PETRI_TRANSITIONS=313} [2024-06-28 03:43:30,552 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 375 predicate places. [2024-06-28 03:43:30,552 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 313 transitions, 3764 flow [2024-06-28 03:43:30,553 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:30,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:30,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:30,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-28 03:43:30,553 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:30,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:30,553 INFO L85 PathProgramCache]: Analyzing trace with hash -1934614941, now seen corresponding path program 29 times [2024-06-28 03:43:30,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:30,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913440102] [2024-06-28 03:43:30,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:30,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:30,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:31,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:31,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:31,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913440102] [2024-06-28 03:43:31,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913440102] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:31,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:31,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:31,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181382590] [2024-06-28 03:43:31,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:31,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:31,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:31,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:31,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:31,805 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:31,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 313 transitions, 3764 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:31,805 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:31,805 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:31,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:32,329 INFO L124 PetriNetUnfolderBase]: 857/1585 cut-off events. [2024-06-28 03:43:32,329 INFO L125 PetriNetUnfolderBase]: For 149934/149934 co-relation queries the response was YES. [2024-06-28 03:43:32,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10376 conditions, 1585 events. 857/1585 cut-off events. For 149934/149934 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9421 event pairs, 142 based on Foata normal form. 2/1587 useless extension candidates. Maximal degree in co-relation 10210. Up to 1230 conditions per place. [2024-06-28 03:43:32,344 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 239 selfloop transitions, 88 changer transitions 0/329 dead transitions. [2024-06-28 03:43:32,344 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 329 transitions, 4498 flow [2024-06-28 03:43:32,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:32,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:32,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 03:43:32,345 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 03:43:32,345 INFO L175 Difference]: Start difference. First operand has 405 places, 313 transitions, 3764 flow. Second operand 10 states and 113 transitions. [2024-06-28 03:43:32,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 329 transitions, 4498 flow [2024-06-28 03:43:32,928 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 329 transitions, 4378 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-28 03:43:32,931 INFO L231 Difference]: Finished difference. Result has 406 places, 314 transitions, 3864 flow [2024-06-28 03:43:32,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3644, PETRI_DIFFERENCE_MINUEND_PLACES=396, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=87, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3864, PETRI_PLACES=406, PETRI_TRANSITIONS=314} [2024-06-28 03:43:32,932 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 376 predicate places. [2024-06-28 03:43:32,932 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 314 transitions, 3864 flow [2024-06-28 03:43:32,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:32,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:32,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:32,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-28 03:43:32,932 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:32,932 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:32,932 INFO L85 PathProgramCache]: Analyzing trace with hash -1390839413, now seen corresponding path program 5 times [2024-06-28 03:43:32,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:32,932 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583131698] [2024-06-28 03:43:32,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:32,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:33,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:33,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:33,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583131698] [2024-06-28 03:43:33,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583131698] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:33,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:33,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:43:33,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800507824] [2024-06-28 03:43:33,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:33,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:43:33,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:33,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:43:33,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:43:33,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:33,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 314 transitions, 3864 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:33,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:33,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:33,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:34,348 INFO L124 PetriNetUnfolderBase]: 853/1579 cut-off events. [2024-06-28 03:43:34,348 INFO L125 PetriNetUnfolderBase]: For 138958/138958 co-relation queries the response was YES. [2024-06-28 03:43:34,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10199 conditions, 1579 events. 853/1579 cut-off events. For 138958/138958 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 9379 event pairs, 164 based on Foata normal form. 2/1581 useless extension candidates. Maximal degree in co-relation 10032. Up to 1021 conditions per place. [2024-06-28 03:43:34,367 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 211 selfloop transitions, 116 changer transitions 0/329 dead transitions. [2024-06-28 03:43:34,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 329 transitions, 4562 flow [2024-06-28 03:43:34,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:34,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:34,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-28 03:43:34,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3774193548387097 [2024-06-28 03:43:34,368 INFO L175 Difference]: Start difference. First operand has 406 places, 314 transitions, 3864 flow. Second operand 10 states and 117 transitions. [2024-06-28 03:43:34,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 329 transitions, 4562 flow [2024-06-28 03:43:34,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 407 places, 329 transitions, 4326 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-28 03:43:34,986 INFO L231 Difference]: Finished difference. Result has 408 places, 314 transitions, 3871 flow [2024-06-28 03:43:34,986 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3628, PETRI_DIFFERENCE_MINUEND_PLACES=398, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3871, PETRI_PLACES=408, PETRI_TRANSITIONS=314} [2024-06-28 03:43:34,986 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 378 predicate places. [2024-06-28 03:43:34,986 INFO L495 AbstractCegarLoop]: Abstraction has has 408 places, 314 transitions, 3871 flow [2024-06-28 03:43:34,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:34,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:34,987 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:34,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-28 03:43:34,987 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:34,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:34,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1390600093, now seen corresponding path program 8 times [2024-06-28 03:43:34,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:34,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520939815] [2024-06-28 03:43:34,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:34,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:36,184 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:36,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:36,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520939815] [2024-06-28 03:43:36,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520939815] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:36,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:36,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:36,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316912894] [2024-06-28 03:43:36,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:36,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:36,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:36,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:36,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:36,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:36,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 314 transitions, 3871 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:36,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:36,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:36,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:36,715 INFO L124 PetriNetUnfolderBase]: 850/1574 cut-off events. [2024-06-28 03:43:36,715 INFO L125 PetriNetUnfolderBase]: For 126891/126891 co-relation queries the response was YES. [2024-06-28 03:43:36,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9910 conditions, 1574 events. 850/1574 cut-off events. For 126891/126891 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 9357 event pairs, 216 based on Foata normal form. 2/1576 useless extension candidates. Maximal degree in co-relation 9742. Up to 1475 conditions per place. [2024-06-28 03:43:36,734 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 280 selfloop transitions, 43 changer transitions 0/325 dead transitions. [2024-06-28 03:43:36,734 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 325 transitions, 4541 flow [2024-06-28 03:43:36,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:43:36,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:43:36,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-28 03:43:36,735 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-28 03:43:36,735 INFO L175 Difference]: Start difference. First operand has 408 places, 314 transitions, 3871 flow. Second operand 11 states and 111 transitions. [2024-06-28 03:43:36,735 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 325 transitions, 4541 flow [2024-06-28 03:43:37,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 405 places, 325 transitions, 4095 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-06-28 03:43:37,333 INFO L231 Difference]: Finished difference. Result has 406 places, 314 transitions, 3515 flow [2024-06-28 03:43:37,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3425, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3515, PETRI_PLACES=406, PETRI_TRANSITIONS=314} [2024-06-28 03:43:37,333 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 376 predicate places. [2024-06-28 03:43:37,334 INFO L495 AbstractCegarLoop]: Abstraction has has 406 places, 314 transitions, 3515 flow [2024-06-28 03:43:37,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:37,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:37,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:37,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-28 03:43:37,334 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:37,334 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:37,334 INFO L85 PathProgramCache]: Analyzing trace with hash -1934619591, now seen corresponding path program 30 times [2024-06-28 03:43:37,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:37,334 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110894572] [2024-06-28 03:43:37,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:37,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:38,320 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:38,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:38,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110894572] [2024-06-28 03:43:38,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110894572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:38,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:38,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:38,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083249251] [2024-06-28 03:43:38,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:38,321 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:38,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:38,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:38,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:38,417 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:38,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 406 places, 314 transitions, 3515 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:38,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:38,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:38,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:38,808 INFO L124 PetriNetUnfolderBase]: 854/1582 cut-off events. [2024-06-28 03:43:38,808 INFO L125 PetriNetUnfolderBase]: For 126354/126354 co-relation queries the response was YES. [2024-06-28 03:43:38,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9670 conditions, 1582 events. 854/1582 cut-off events. For 126354/126354 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 9402 event pairs, 141 based on Foata normal form. 2/1584 useless extension candidates. Maximal degree in co-relation 9501. Up to 1207 conditions per place. [2024-06-28 03:43:38,828 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 238 selfloop transitions, 90 changer transitions 0/330 dead transitions. [2024-06-28 03:43:38,829 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 415 places, 330 transitions, 4251 flow [2024-06-28 03:43:38,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:38,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:38,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 03:43:38,830 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36451612903225805 [2024-06-28 03:43:38,830 INFO L175 Difference]: Start difference. First operand has 406 places, 314 transitions, 3515 flow. Second operand 10 states and 113 transitions. [2024-06-28 03:43:38,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 415 places, 330 transitions, 4251 flow [2024-06-28 03:43:39,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 330 transitions, 4000 flow, removed 17 selfloop flow, removed 14 redundant places. [2024-06-28 03:43:39,358 INFO L231 Difference]: Finished difference. Result has 402 places, 315 transitions, 3490 flow [2024-06-28 03:43:39,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3264, PETRI_DIFFERENCE_MINUEND_PLACES=392, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=314, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3490, PETRI_PLACES=402, PETRI_TRANSITIONS=315} [2024-06-28 03:43:39,358 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 372 predicate places. [2024-06-28 03:43:39,358 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 315 transitions, 3490 flow [2024-06-28 03:43:39,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:39,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:39,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:39,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-28 03:43:39,358 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:39,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:39,359 INFO L85 PathProgramCache]: Analyzing trace with hash -1567977877, now seen corresponding path program 31 times [2024-06-28 03:43:39,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:39,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294296767] [2024-06-28 03:43:39,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:39,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:40,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:40,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:40,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294296767] [2024-06-28 03:43:40,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294296767] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:40,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:40,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:40,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641287555] [2024-06-28 03:43:40,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:40,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:40,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:40,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:40,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:40,493 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:40,493 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 315 transitions, 3490 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:40,493 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:40,493 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:40,493 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:41,013 INFO L124 PetriNetUnfolderBase]: 858/1590 cut-off events. [2024-06-28 03:43:41,013 INFO L125 PetriNetUnfolderBase]: For 128881/128881 co-relation queries the response was YES. [2024-06-28 03:43:41,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9696 conditions, 1590 events. 858/1590 cut-off events. For 128881/128881 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 9489 event pairs, 143 based on Foata normal form. 2/1592 useless extension candidates. Maximal degree in co-relation 9530. Up to 1235 conditions per place. [2024-06-28 03:43:41,034 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 237 selfloop transitions, 91 changer transitions 0/330 dead transitions. [2024-06-28 03:43:41,034 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 411 places, 330 transitions, 4226 flow [2024-06-28 03:43:41,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:41,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:41,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:43:41,035 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:43:41,035 INFO L175 Difference]: Start difference. First operand has 402 places, 315 transitions, 3490 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:43:41,035 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 411 places, 330 transitions, 4226 flow [2024-06-28 03:43:41,618 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 402 places, 330 transitions, 3984 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-28 03:43:41,621 INFO L231 Difference]: Finished difference. Result has 403 places, 316 transitions, 3478 flow [2024-06-28 03:43:41,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3250, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=315, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=90, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3478, PETRI_PLACES=403, PETRI_TRANSITIONS=316} [2024-06-28 03:43:41,622 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 373 predicate places. [2024-06-28 03:43:41,622 INFO L495 AbstractCegarLoop]: Abstraction has has 403 places, 316 transitions, 3478 flow [2024-06-28 03:43:41,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:41,622 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:41,622 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:41,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-28 03:43:41,622 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:41,623 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:41,623 INFO L85 PathProgramCache]: Analyzing trace with hash -1964941887, now seen corresponding path program 32 times [2024-06-28 03:43:41,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:41,623 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721354129] [2024-06-28 03:43:41,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:41,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:41,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:42,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:42,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:42,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721354129] [2024-06-28 03:43:42,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721354129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:42,599 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:42,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:42,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033232307] [2024-06-28 03:43:42,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:42,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:42,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:42,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:42,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:42,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:42,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 316 transitions, 3478 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:42,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:42,677 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:42,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:43,173 INFO L124 PetriNetUnfolderBase]: 862/1598 cut-off events. [2024-06-28 03:43:43,174 INFO L125 PetriNetUnfolderBase]: For 130880/130880 co-relation queries the response was YES. [2024-06-28 03:43:43,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9690 conditions, 1598 events. 862/1598 cut-off events. For 130880/130880 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 9543 event pairs, 123 based on Foata normal form. 2/1600 useless extension candidates. Maximal degree in co-relation 9524. Up to 1243 conditions per place. [2024-06-28 03:43:43,192 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 230 selfloop transitions, 99 changer transitions 0/331 dead transitions. [2024-06-28 03:43:43,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 412 places, 331 transitions, 4216 flow [2024-06-28 03:43:43,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:43,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:43,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:43:43,192 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 03:43:43,193 INFO L175 Difference]: Start difference. First operand has 403 places, 316 transitions, 3478 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:43:43,193 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 412 places, 331 transitions, 4216 flow [2024-06-28 03:43:43,791 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 404 places, 331 transitions, 3998 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 03:43:43,796 INFO L231 Difference]: Finished difference. Result has 405 places, 317 transitions, 3506 flow [2024-06-28 03:43:43,796 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3260, PETRI_DIFFERENCE_MINUEND_PLACES=395, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3506, PETRI_PLACES=405, PETRI_TRANSITIONS=317} [2024-06-28 03:43:43,796 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 375 predicate places. [2024-06-28 03:43:43,796 INFO L495 AbstractCegarLoop]: Abstraction has has 405 places, 317 transitions, 3506 flow [2024-06-28 03:43:43,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:43,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:43,797 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:43,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-28 03:43:43,797 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:43,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:43,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1567982527, now seen corresponding path program 33 times [2024-06-28 03:43:43,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:43,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34538911] [2024-06-28 03:43:43,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:43,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:43,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:44,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:44,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:44,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34538911] [2024-06-28 03:43:44,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34538911] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:44,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:44,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:44,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776565798] [2024-06-28 03:43:44,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:44,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:44,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:44,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:44,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:44,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:44,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 405 places, 317 transitions, 3506 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:44,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:44,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:44,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:45,506 INFO L124 PetriNetUnfolderBase]: 866/1606 cut-off events. [2024-06-28 03:43:45,506 INFO L125 PetriNetUnfolderBase]: For 133103/133103 co-relation queries the response was YES. [2024-06-28 03:43:45,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9769 conditions, 1606 events. 866/1606 cut-off events. For 133103/133103 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 9645 event pairs, 145 based on Foata normal form. 2/1608 useless extension candidates. Maximal degree in co-relation 9602. Up to 1237 conditions per place. [2024-06-28 03:43:45,521 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 238 selfloop transitions, 92 changer transitions 0/332 dead transitions. [2024-06-28 03:43:45,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 332 transitions, 4246 flow [2024-06-28 03:43:45,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:45,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:45,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 03:43:45,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3580645161290323 [2024-06-28 03:43:45,522 INFO L175 Difference]: Start difference. First operand has 405 places, 317 transitions, 3506 flow. Second operand 10 states and 111 transitions. [2024-06-28 03:43:45,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 414 places, 332 transitions, 4246 flow [2024-06-28 03:43:46,125 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 332 transitions, 4010 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 03:43:46,129 INFO L231 Difference]: Finished difference. Result has 407 places, 318 transitions, 3504 flow [2024-06-28 03:43:46,129 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3270, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=317, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3504, PETRI_PLACES=407, PETRI_TRANSITIONS=318} [2024-06-28 03:43:46,129 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 377 predicate places. [2024-06-28 03:43:46,129 INFO L495 AbstractCegarLoop]: Abstraction has has 407 places, 318 transitions, 3504 flow [2024-06-28 03:43:46,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:46,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:46,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:46,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-28 03:43:46,130 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:46,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:46,130 INFO L85 PathProgramCache]: Analyzing trace with hash 319874317, now seen corresponding path program 34 times [2024-06-28 03:43:46,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:46,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812293142] [2024-06-28 03:43:46,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:46,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:46,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:47,051 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:47,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:47,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812293142] [2024-06-28 03:43:47,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812293142] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:47,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:47,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:47,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551025324] [2024-06-28 03:43:47,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:47,051 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:47,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:47,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:47,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:47,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:47,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 407 places, 318 transitions, 3504 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:47,151 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:47,151 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:47,151 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:47,544 INFO L124 PetriNetUnfolderBase]: 870/1614 cut-off events. [2024-06-28 03:43:47,544 INFO L125 PetriNetUnfolderBase]: For 135419/135419 co-relation queries the response was YES. [2024-06-28 03:43:47,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9800 conditions, 1614 events. 870/1614 cut-off events. For 135419/135419 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9680 event pairs, 127 based on Foata normal form. 2/1616 useless extension candidates. Maximal degree in co-relation 9632. Up to 1233 conditions per place. [2024-06-28 03:43:47,563 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 229 selfloop transitions, 102 changer transitions 0/333 dead transitions. [2024-06-28 03:43:47,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 416 places, 333 transitions, 4248 flow [2024-06-28 03:43:47,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:47,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:47,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-28 03:43:47,564 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35161290322580646 [2024-06-28 03:43:47,564 INFO L175 Difference]: Start difference. First operand has 407 places, 318 transitions, 3504 flow. Second operand 10 states and 109 transitions. [2024-06-28 03:43:47,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 416 places, 333 transitions, 4248 flow [2024-06-28 03:43:48,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 408 places, 333 transitions, 4024 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-28 03:43:48,214 INFO L231 Difference]: Finished difference. Result has 409 places, 319 transitions, 3536 flow [2024-06-28 03:43:48,215 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3280, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3536, PETRI_PLACES=409, PETRI_TRANSITIONS=319} [2024-06-28 03:43:48,215 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 379 predicate places. [2024-06-28 03:43:48,216 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 319 transitions, 3536 flow [2024-06-28 03:43:48,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:48,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:48,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:48,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-28 03:43:48,216 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:48,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:48,217 INFO L85 PathProgramCache]: Analyzing trace with hash 320058891, now seen corresponding path program 6 times [2024-06-28 03:43:48,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:48,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340495408] [2024-06-28 03:43:48,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:48,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:48,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:49,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:49,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:49,305 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340495408] [2024-06-28 03:43:49,305 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340495408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:49,305 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:49,305 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:43:49,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170677254] [2024-06-28 03:43:49,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:49,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:43:49,306 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:49,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:43:49,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:43:49,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:49,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 319 transitions, 3536 flow. Second operand has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:49,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:49,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:49,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:49,803 INFO L124 PetriNetUnfolderBase]: 866/1608 cut-off events. [2024-06-28 03:43:49,803 INFO L125 PetriNetUnfolderBase]: For 122062/122062 co-relation queries the response was YES. [2024-06-28 03:43:49,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9499 conditions, 1608 events. 866/1608 cut-off events. For 122062/122062 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9657 event pairs, 139 based on Foata normal form. 2/1610 useless extension candidates. Maximal degree in co-relation 9330. Up to 1046 conditions per place. [2024-06-28 03:43:49,822 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 204 selfloop transitions, 128 changer transitions 0/334 dead transitions. [2024-06-28 03:43:49,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 334 transitions, 4244 flow [2024-06-28 03:43:49,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:49,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:49,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-28 03:43:49,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3741935483870968 [2024-06-28 03:43:49,823 INFO L175 Difference]: Start difference. First operand has 409 places, 319 transitions, 3536 flow. Second operand 10 states and 116 transitions. [2024-06-28 03:43:49,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 334 transitions, 4244 flow [2024-06-28 03:43:50,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 334 transitions, 3972 flow, removed 35 selfloop flow, removed 8 redundant places. [2024-06-28 03:43:50,411 INFO L231 Difference]: Finished difference. Result has 411 places, 319 transitions, 3534 flow [2024-06-28 03:43:50,411 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3264, PETRI_DIFFERENCE_MINUEND_PLACES=401, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=128, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3534, PETRI_PLACES=411, PETRI_TRANSITIONS=319} [2024-06-28 03:43:50,411 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 381 predicate places. [2024-06-28 03:43:50,411 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 319 transitions, 3534 flow [2024-06-28 03:43:50,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.363636363636363) internal successors, (70), 11 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:50,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:50,411 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:50,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-28 03:43:50,412 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:50,412 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:50,412 INFO L85 PathProgramCache]: Analyzing trace with hash -2105437341, now seen corresponding path program 35 times [2024-06-28 03:43:50,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:50,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272603491] [2024-06-28 03:43:50,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:50,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:50,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:51,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:51,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:51,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272603491] [2024-06-28 03:43:51,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272603491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:51,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:51,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:43:51,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453165411] [2024-06-28 03:43:51,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:51,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:43:51,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:51,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:43:51,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:43:51,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:51,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 319 transitions, 3534 flow. Second operand has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:51,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:51,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:51,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:51,889 INFO L124 PetriNetUnfolderBase]: 863/1603 cut-off events. [2024-06-28 03:43:51,889 INFO L125 PetriNetUnfolderBase]: For 107786/107786 co-relation queries the response was YES. [2024-06-28 03:43:51,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9170 conditions, 1603 events. 863/1603 cut-off events. For 107786/107786 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9647 event pairs, 148 based on Foata normal form. 2/1605 useless extension candidates. Maximal degree in co-relation 9000. Up to 1154 conditions per place. [2024-06-28 03:43:51,909 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 231 selfloop transitions, 100 changer transitions 0/333 dead transitions. [2024-06-28 03:43:51,909 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 420 places, 333 transitions, 4230 flow [2024-06-28 03:43:51,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:43:51,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:43:51,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-28 03:43:51,910 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:43:51,910 INFO L175 Difference]: Start difference. First operand has 411 places, 319 transitions, 3534 flow. Second operand 10 states and 110 transitions. [2024-06-28 03:43:51,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 420 places, 333 transitions, 4230 flow [2024-06-28 03:43:52,450 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 409 places, 333 transitions, 3922 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:43:52,453 INFO L231 Difference]: Finished difference. Result has 410 places, 319 transitions, 3430 flow [2024-06-28 03:43:52,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3226, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3430, PETRI_PLACES=410, PETRI_TRANSITIONS=319} [2024-06-28 03:43:52,454 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 380 predicate places. [2024-06-28 03:43:52,454 INFO L495 AbstractCegarLoop]: Abstraction has has 410 places, 319 transitions, 3430 flow [2024-06-28 03:43:52,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.25) internal successors, (75), 12 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:52,454 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:52,454 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:52,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-28 03:43:52,454 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:52,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:52,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1408071917, now seen corresponding path program 1 times [2024-06-28 03:43:52,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:52,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017597821] [2024-06-28 03:43:52,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:52,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:52,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:53,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:53,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:53,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017597821] [2024-06-28 03:43:53,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017597821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:53,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:53,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:53,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677863394] [2024-06-28 03:43:53,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:53,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:53,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:53,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:53,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:53,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:53,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 410 places, 319 transitions, 3430 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:53,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:53,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:53,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:53,826 INFO L124 PetriNetUnfolderBase]: 867/1611 cut-off events. [2024-06-28 03:43:53,827 INFO L125 PetriNetUnfolderBase]: For 104901/104901 co-relation queries the response was YES. [2024-06-28 03:43:53,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9155 conditions, 1611 events. 867/1611 cut-off events. For 104901/104901 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9680 event pairs, 199 based on Foata normal form. 2/1613 useless extension candidates. Maximal degree in co-relation 8984. Up to 1510 conditions per place. [2024-06-28 03:43:53,845 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 313 selfloop transitions, 27 changer transitions 0/342 dead transitions. [2024-06-28 03:43:53,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 421 places, 342 transitions, 4202 flow [2024-06-28 03:43:53,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:43:53,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:43:53,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-28 03:43:53,846 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32526881720430106 [2024-06-28 03:43:53,846 INFO L175 Difference]: Start difference. First operand has 410 places, 319 transitions, 3430 flow. Second operand 12 states and 121 transitions. [2024-06-28 03:43:53,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 421 places, 342 transitions, 4202 flow [2024-06-28 03:43:54,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 410 places, 342 transitions, 3788 flow, removed 23 selfloop flow, removed 11 redundant places. [2024-06-28 03:43:54,400 INFO L231 Difference]: Finished difference. Result has 411 places, 320 transitions, 3114 flow [2024-06-28 03:43:54,400 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3016, PETRI_DIFFERENCE_MINUEND_PLACES=399, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3114, PETRI_PLACES=411, PETRI_TRANSITIONS=320} [2024-06-28 03:43:54,401 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 381 predicate places. [2024-06-28 03:43:54,401 INFO L495 AbstractCegarLoop]: Abstraction has has 411 places, 320 transitions, 3114 flow [2024-06-28 03:43:54,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:54,401 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:54,401 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:54,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-28 03:43:54,401 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:54,401 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:54,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1643369731, now seen corresponding path program 2 times [2024-06-28 03:43:54,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:54,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892993421] [2024-06-28 03:43:54,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:54,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:54,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:55,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:55,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:55,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892993421] [2024-06-28 03:43:55,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892993421] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:55,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:55,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:55,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219852655] [2024-06-28 03:43:55,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:55,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:55,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:55,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:55,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:55,355 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:55,355 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 411 places, 320 transitions, 3114 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:55,355 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:55,355 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:55,355 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:55,776 INFO L124 PetriNetUnfolderBase]: 871/1619 cut-off events. [2024-06-28 03:43:55,776 INFO L125 PetriNetUnfolderBase]: For 108356/108356 co-relation queries the response was YES. [2024-06-28 03:43:55,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8653 conditions, 1619 events. 871/1619 cut-off events. For 108356/108356 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9752 event pairs, 165 based on Foata normal form. 2/1621 useless extension candidates. Maximal degree in co-relation 8483. Up to 1483 conditions per place. [2024-06-28 03:43:55,795 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 312 selfloop transitions, 29 changer transitions 0/343 dead transitions. [2024-06-28 03:43:55,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 422 places, 343 transitions, 3888 flow [2024-06-28 03:43:55,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:43:55,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:43:55,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-28 03:43:55,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-28 03:43:55,796 INFO L175 Difference]: Start difference. First operand has 411 places, 320 transitions, 3114 flow. Second operand 12 states and 118 transitions. [2024-06-28 03:43:55,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 422 places, 343 transitions, 3888 flow [2024-06-28 03:43:56,385 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 411 places, 343 transitions, 3729 flow, removed 19 selfloop flow, removed 11 redundant places. [2024-06-28 03:43:56,389 INFO L231 Difference]: Finished difference. Result has 412 places, 321 transitions, 3059 flow [2024-06-28 03:43:56,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2955, PETRI_DIFFERENCE_MINUEND_PLACES=400, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=320, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3059, PETRI_PLACES=412, PETRI_TRANSITIONS=321} [2024-06-28 03:43:56,389 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 382 predicate places. [2024-06-28 03:43:56,389 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 321 transitions, 3059 flow [2024-06-28 03:43:56,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:56,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:56,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:56,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-28 03:43:56,390 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:56,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:56,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1147707195, now seen corresponding path program 3 times [2024-06-28 03:43:56,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:56,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381771724] [2024-06-28 03:43:56,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:56,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:56,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:57,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:57,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:57,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381771724] [2024-06-28 03:43:57,476 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381771724] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:57,476 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:57,476 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:57,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166170274] [2024-06-28 03:43:57,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:57,479 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:57,479 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:57,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:57,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:57,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:57,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 321 transitions, 3059 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:57,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:57,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:57,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:43:58,022 INFO L124 PetriNetUnfolderBase]: 882/1640 cut-off events. [2024-06-28 03:43:58,023 INFO L125 PetriNetUnfolderBase]: For 123035/123035 co-relation queries the response was YES. [2024-06-28 03:43:58,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8932 conditions, 1640 events. 882/1640 cut-off events. For 123035/123035 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 9884 event pairs, 193 based on Foata normal form. 2/1642 useless extension candidates. Maximal degree in co-relation 8762. Up to 1464 conditions per place. [2024-06-28 03:43:58,042 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 308 selfloop transitions, 35 changer transitions 0/345 dead transitions. [2024-06-28 03:43:58,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 423 places, 345 transitions, 4129 flow [2024-06-28 03:43:58,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:43:58,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:43:58,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-28 03:43:58,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-28 03:43:58,043 INFO L175 Difference]: Start difference. First operand has 412 places, 321 transitions, 3059 flow. Second operand 12 states and 127 transitions. [2024-06-28 03:43:58,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 423 places, 345 transitions, 4129 flow [2024-06-28 03:43:58,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 413 places, 345 transitions, 4035 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-28 03:43:58,715 INFO L231 Difference]: Finished difference. Result has 414 places, 323 transitions, 3125 flow [2024-06-28 03:43:58,716 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2965, PETRI_DIFFERENCE_MINUEND_PLACES=402, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=321, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3125, PETRI_PLACES=414, PETRI_TRANSITIONS=323} [2024-06-28 03:43:58,716 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 384 predicate places. [2024-06-28 03:43:58,716 INFO L495 AbstractCegarLoop]: Abstraction has has 414 places, 323 transitions, 3125 flow [2024-06-28 03:43:58,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:58,716 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:43:58,716 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:43:58,716 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-28 03:43:58,716 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:43:58,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:43:58,717 INFO L85 PathProgramCache]: Analyzing trace with hash -284068453, now seen corresponding path program 4 times [2024-06-28 03:43:58,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:43:58,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748735479] [2024-06-28 03:43:58,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:43:58,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:43:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:43:59,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:43:59,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:43:59,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748735479] [2024-06-28 03:43:59,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748735479] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:43:59,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:43:59,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:43:59,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950068777] [2024-06-28 03:43:59,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:43:59,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:43:59,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:43:59,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:43:59,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:43:59,743 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:43:59,743 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 323 transitions, 3125 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:43:59,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:43:59,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:43:59,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:00,196 INFO L124 PetriNetUnfolderBase]: 886/1648 cut-off events. [2024-06-28 03:44:00,196 INFO L125 PetriNetUnfolderBase]: For 128371/128371 co-relation queries the response was YES. [2024-06-28 03:44:00,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8991 conditions, 1648 events. 886/1648 cut-off events. For 128371/128371 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 9970 event pairs, 198 based on Foata normal form. 2/1650 useless extension candidates. Maximal degree in co-relation 8820. Up to 1500 conditions per place. [2024-06-28 03:44:00,216 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 308 selfloop transitions, 36 changer transitions 0/346 dead transitions. [2024-06-28 03:44:00,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 425 places, 346 transitions, 4161 flow [2024-06-28 03:44:00,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:00,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:00,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-28 03:44:00,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 03:44:00,217 INFO L175 Difference]: Start difference. First operand has 414 places, 323 transitions, 3125 flow. Second operand 12 states and 126 transitions. [2024-06-28 03:44:00,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 425 places, 346 transitions, 4161 flow [2024-06-28 03:44:00,884 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 346 transitions, 4053 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-28 03:44:00,887 INFO L231 Difference]: Finished difference. Result has 418 places, 324 transitions, 3137 flow [2024-06-28 03:44:00,887 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3029, PETRI_DIFFERENCE_MINUEND_PLACES=406, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=323, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3137, PETRI_PLACES=418, PETRI_TRANSITIONS=324} [2024-06-28 03:44:00,887 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 388 predicate places. [2024-06-28 03:44:00,887 INFO L495 AbstractCegarLoop]: Abstraction has has 418 places, 324 transitions, 3137 flow [2024-06-28 03:44:00,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:00,888 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:00,888 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:00,888 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-28 03:44:00,888 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:00,888 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:00,889 INFO L85 PathProgramCache]: Analyzing trace with hash -283924303, now seen corresponding path program 5 times [2024-06-28 03:44:00,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:00,889 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591038081] [2024-06-28 03:44:00,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:00,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:01,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:01,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:01,798 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591038081] [2024-06-28 03:44:01,798 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591038081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:01,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:01,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:01,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864039720] [2024-06-28 03:44:01,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:01,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:01,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:01,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:01,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:01,925 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:44:01,925 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 418 places, 324 transitions, 3137 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:01,925 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:01,925 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:44:01,925 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:02,402 INFO L124 PetriNetUnfolderBase]: 890/1656 cut-off events. [2024-06-28 03:44:02,402 INFO L125 PetriNetUnfolderBase]: For 129236/129236 co-relation queries the response was YES. [2024-06-28 03:44:02,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9008 conditions, 1656 events. 890/1656 cut-off events. For 129236/129236 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10023 event pairs, 205 based on Foata normal form. 2/1658 useless extension candidates. Maximal degree in co-relation 8835. Up to 1528 conditions per place. [2024-06-28 03:44:02,421 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 308 selfloop transitions, 37 changer transitions 0/347 dead transitions. [2024-06-28 03:44:02,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 429 places, 347 transitions, 4169 flow [2024-06-28 03:44:02,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:02,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:02,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 03:44:02,422 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-28 03:44:02,422 INFO L175 Difference]: Start difference. First operand has 418 places, 324 transitions, 3137 flow. Second operand 12 states and 125 transitions. [2024-06-28 03:44:02,422 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 429 places, 347 transitions, 4169 flow [2024-06-28 03:44:03,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 419 places, 347 transitions, 4066 flow, removed 14 selfloop flow, removed 10 redundant places. [2024-06-28 03:44:03,182 INFO L231 Difference]: Finished difference. Result has 420 places, 325 transitions, 3146 flow [2024-06-28 03:44:03,182 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3036, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3146, PETRI_PLACES=420, PETRI_TRANSITIONS=325} [2024-06-28 03:44:03,183 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 390 predicate places. [2024-06-28 03:44:03,183 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 325 transitions, 3146 flow [2024-06-28 03:44:03,183 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:03,183 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:03,183 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:03,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-28 03:44:03,183 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:03,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:03,183 INFO L85 PathProgramCache]: Analyzing trace with hash -283918723, now seen corresponding path program 6 times [2024-06-28 03:44:03,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:03,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1101736003] [2024-06-28 03:44:03,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:03,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:03,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:04,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:04,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:04,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1101736003] [2024-06-28 03:44:04,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1101736003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:04,130 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:04,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:04,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004091342] [2024-06-28 03:44:04,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:04,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:04,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:04,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:04,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:04,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:44:04,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 325 transitions, 3146 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:04,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:04,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:44:04,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:04,703 INFO L124 PetriNetUnfolderBase]: 887/1651 cut-off events. [2024-06-28 03:44:04,703 INFO L125 PetriNetUnfolderBase]: For 115001/115001 co-relation queries the response was YES. [2024-06-28 03:44:04,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8675 conditions, 1651 events. 887/1651 cut-off events. For 115001/115001 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10006 event pairs, 209 based on Foata normal form. 2/1653 useless extension candidates. Maximal degree in co-relation 8501. Up to 1542 conditions per place. [2024-06-28 03:44:04,724 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 307 selfloop transitions, 37 changer transitions 0/346 dead transitions. [2024-06-28 03:44:04,724 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 431 places, 346 transitions, 3892 flow [2024-06-28 03:44:04,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:04,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:04,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-28 03:44:04,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-28 03:44:04,725 INFO L175 Difference]: Start difference. First operand has 420 places, 325 transitions, 3146 flow. Second operand 12 states and 123 transitions. [2024-06-28 03:44:04,725 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 431 places, 346 transitions, 3892 flow [2024-06-28 03:44:05,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 421 places, 346 transitions, 3761 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-28 03:44:05,394 INFO L231 Difference]: Finished difference. Result has 422 places, 325 transitions, 3094 flow [2024-06-28 03:44:05,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3015, PETRI_DIFFERENCE_MINUEND_PLACES=410, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=288, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3094, PETRI_PLACES=422, PETRI_TRANSITIONS=325} [2024-06-28 03:44:05,394 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 392 predicate places. [2024-06-28 03:44:05,394 INFO L495 AbstractCegarLoop]: Abstraction has has 422 places, 325 transitions, 3094 flow [2024-06-28 03:44:05,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:05,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:05,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:05,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-28 03:44:05,394 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:05,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:05,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1588062563, now seen corresponding path program 7 times [2024-06-28 03:44:05,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:05,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976328136] [2024-06-28 03:44:05,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:05,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:06,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:06,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:06,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976328136] [2024-06-28 03:44:06,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976328136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:06,398 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:06,398 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:06,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128585064] [2024-06-28 03:44:06,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:06,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:06,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:06,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:06,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:06,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:44:06,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 422 places, 325 transitions, 3094 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:06,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:06,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:44:06,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:06,980 INFO L124 PetriNetUnfolderBase]: 891/1659 cut-off events. [2024-06-28 03:44:06,980 INFO L125 PetriNetUnfolderBase]: For 116717/116717 co-relation queries the response was YES. [2024-06-28 03:44:06,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8678 conditions, 1659 events. 891/1659 cut-off events. For 116717/116717 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 10045 event pairs, 177 based on Foata normal form. 2/1661 useless extension candidates. Maximal degree in co-relation 8503. Up to 1558 conditions per place. [2024-06-28 03:44:07,001 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 319 selfloop transitions, 26 changer transitions 0/347 dead transitions. [2024-06-28 03:44:07,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 347 transitions, 3880 flow [2024-06-28 03:44:07,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:07,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:07,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-28 03:44:07,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3279569892473118 [2024-06-28 03:44:07,002 INFO L175 Difference]: Start difference. First operand has 422 places, 325 transitions, 3094 flow. Second operand 12 states and 122 transitions. [2024-06-28 03:44:07,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 347 transitions, 3880 flow [2024-06-28 03:44:07,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 422 places, 347 transitions, 3803 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-06-28 03:44:07,707 INFO L231 Difference]: Finished difference. Result has 423 places, 326 transitions, 3119 flow [2024-06-28 03:44:07,707 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3017, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=299, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3119, PETRI_PLACES=423, PETRI_TRANSITIONS=326} [2024-06-28 03:44:07,707 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 393 predicate places. [2024-06-28 03:44:07,707 INFO L495 AbstractCegarLoop]: Abstraction has has 423 places, 326 transitions, 3119 flow [2024-06-28 03:44:07,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:07,708 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:07,708 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:07,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-28 03:44:07,708 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:07,708 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:07,708 INFO L85 PathProgramCache]: Analyzing trace with hash 350074301, now seen corresponding path program 8 times [2024-06-28 03:44:07,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:07,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265563895] [2024-06-28 03:44:07,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:07,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:08,745 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:08,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:08,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265563895] [2024-06-28 03:44:08,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265563895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:08,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:08,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:08,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [529870631] [2024-06-28 03:44:08,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:08,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:08,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:08,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:08,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:08,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:44:08,867 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 423 places, 326 transitions, 3119 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:08,867 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:08,867 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:44:08,867 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:09,401 INFO L124 PetriNetUnfolderBase]: 895/1667 cut-off events. [2024-06-28 03:44:09,401 INFO L125 PetriNetUnfolderBase]: For 119492/119492 co-relation queries the response was YES. [2024-06-28 03:44:09,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8779 conditions, 1667 events. 895/1667 cut-off events. For 119492/119492 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10113 event pairs, 181 based on Foata normal form. 2/1669 useless extension candidates. Maximal degree in co-relation 8603. Up to 1558 conditions per place. [2024-06-28 03:44:09,422 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 309 selfloop transitions, 36 changer transitions 0/347 dead transitions. [2024-06-28 03:44:09,422 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 347 transitions, 3911 flow [2024-06-28 03:44:09,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:09,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:09,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-06-28 03:44:09,423 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 03:44:09,423 INFO L175 Difference]: Start difference. First operand has 423 places, 326 transitions, 3119 flow. Second operand 12 states and 124 transitions. [2024-06-28 03:44:09,423 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 434 places, 347 transitions, 3911 flow [2024-06-28 03:44:10,047 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 424 places, 347 transitions, 3819 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-28 03:44:10,051 INFO L231 Difference]: Finished difference. Result has 425 places, 327 transitions, 3152 flow [2024-06-28 03:44:10,051 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3027, PETRI_DIFFERENCE_MINUEND_PLACES=413, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=290, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3152, PETRI_PLACES=425, PETRI_TRANSITIONS=327} [2024-06-28 03:44:10,051 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 395 predicate places. [2024-06-28 03:44:10,052 INFO L495 AbstractCegarLoop]: Abstraction has has 425 places, 327 transitions, 3152 flow [2024-06-28 03:44:10,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:10,052 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:10,052 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:10,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-28 03:44:10,052 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:10,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:10,053 INFO L85 PathProgramCache]: Analyzing trace with hash -902319713, now seen corresponding path program 9 times [2024-06-28 03:44:10,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:10,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311714339] [2024-06-28 03:44:10,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:10,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:10,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:11,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:11,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:11,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311714339] [2024-06-28 03:44:11,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311714339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:11,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:11,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:11,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66699564] [2024-06-28 03:44:11,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:11,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:11,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:11,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:11,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:11,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:44:11,179 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 425 places, 327 transitions, 3152 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:11,179 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:11,179 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:44:11,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:11,656 INFO L124 PetriNetUnfolderBase]: 899/1675 cut-off events. [2024-06-28 03:44:11,656 INFO L125 PetriNetUnfolderBase]: For 121611/121611 co-relation queries the response was YES. [2024-06-28 03:44:11,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8848 conditions, 1675 events. 899/1675 cut-off events. For 121611/121611 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10180 event pairs, 181 based on Foata normal form. 2/1677 useless extension candidates. Maximal degree in co-relation 8671. Up to 1550 conditions per place. [2024-06-28 03:44:11,677 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 310 selfloop transitions, 36 changer transitions 0/348 dead transitions. [2024-06-28 03:44:11,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 436 places, 348 transitions, 3946 flow [2024-06-28 03:44:11,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:11,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:11,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 03:44:11,678 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-28 03:44:11,679 INFO L175 Difference]: Start difference. First operand has 425 places, 327 transitions, 3152 flow. Second operand 12 states and 125 transitions. [2024-06-28 03:44:11,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 436 places, 348 transitions, 3946 flow [2024-06-28 03:44:12,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 426 places, 348 transitions, 3833 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-28 03:44:12,319 INFO L231 Difference]: Finished difference. Result has 427 places, 328 transitions, 3165 flow [2024-06-28 03:44:12,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3039, PETRI_DIFFERENCE_MINUEND_PLACES=415, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3165, PETRI_PLACES=427, PETRI_TRANSITIONS=328} [2024-06-28 03:44:12,319 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 397 predicate places. [2024-06-28 03:44:12,319 INFO L495 AbstractCegarLoop]: Abstraction has has 427 places, 328 transitions, 3165 flow [2024-06-28 03:44:12,319 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:12,319 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:12,320 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:12,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-28 03:44:12,320 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:12,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:12,320 INFO L85 PathProgramCache]: Analyzing trace with hash -906038783, now seen corresponding path program 10 times [2024-06-28 03:44:12,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:12,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613580938] [2024-06-28 03:44:12,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:12,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:12,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:13,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:13,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:13,358 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613580938] [2024-06-28 03:44:13,358 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613580938] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:13,358 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:13,358 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:13,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598123720] [2024-06-28 03:44:13,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:13,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:13,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:13,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:13,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:13,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:44:13,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 427 places, 328 transitions, 3165 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:13,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:13,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:44:13,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:13,959 INFO L124 PetriNetUnfolderBase]: 910/1696 cut-off events. [2024-06-28 03:44:13,959 INFO L125 PetriNetUnfolderBase]: For 141733/141733 co-relation queries the response was YES. [2024-06-28 03:44:13,976 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9331 conditions, 1696 events. 910/1696 cut-off events. For 141733/141733 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10334 event pairs, 186 based on Foata normal form. 2/1698 useless extension candidates. Maximal degree in co-relation 9153. Up to 1512 conditions per place. [2024-06-28 03:44:13,980 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 313 selfloop transitions, 36 changer transitions 0/351 dead transitions. [2024-06-28 03:44:13,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 351 transitions, 4275 flow [2024-06-28 03:44:13,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:13,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:13,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-28 03:44:13,981 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 03:44:13,981 INFO L175 Difference]: Start difference. First operand has 427 places, 328 transitions, 3165 flow. Second operand 12 states and 128 transitions. [2024-06-28 03:44:13,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 351 transitions, 4275 flow [2024-06-28 03:44:14,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 351 transitions, 4159 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-28 03:44:14,736 INFO L231 Difference]: Finished difference. Result has 429 places, 330 transitions, 3227 flow [2024-06-28 03:44:14,737 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3049, PETRI_DIFFERENCE_MINUEND_PLACES=417, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=293, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3227, PETRI_PLACES=429, PETRI_TRANSITIONS=330} [2024-06-28 03:44:14,737 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 399 predicate places. [2024-06-28 03:44:14,737 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 330 transitions, 3227 flow [2024-06-28 03:44:14,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:14,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:14,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:14,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-28 03:44:14,738 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:14,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:14,738 INFO L85 PathProgramCache]: Analyzing trace with hash -319453723, now seen corresponding path program 11 times [2024-06-28 03:44:14,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:14,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699584482] [2024-06-28 03:44:14,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:14,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:14,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:15,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:15,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:15,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699584482] [2024-06-28 03:44:15,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699584482] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:15,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:15,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:15,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169173153] [2024-06-28 03:44:15,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:15,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:15,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:15,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:15,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:16,031 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:44:16,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 330 transitions, 3227 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:16,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:16,032 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:44:16,032 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:16,532 INFO L124 PetriNetUnfolderBase]: 907/1691 cut-off events. [2024-06-28 03:44:16,532 INFO L125 PetriNetUnfolderBase]: For 125938/125938 co-relation queries the response was YES. [2024-06-28 03:44:16,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8952 conditions, 1691 events. 907/1691 cut-off events. For 125938/125938 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10292 event pairs, 181 based on Foata normal form. 2/1693 useless extension candidates. Maximal degree in co-relation 8773. Up to 1542 conditions per place. [2024-06-28 03:44:16,553 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 312 selfloop transitions, 36 changer transitions 0/350 dead transitions. [2024-06-28 03:44:16,553 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 350 transitions, 3975 flow [2024-06-28 03:44:16,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:16,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:16,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-28 03:44:16,554 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 03:44:16,554 INFO L175 Difference]: Start difference. First operand has 429 places, 330 transitions, 3227 flow. Second operand 12 states and 126 transitions. [2024-06-28 03:44:16,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 350 transitions, 3975 flow [2024-06-28 03:44:17,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 350 transitions, 3841 flow, removed 46 selfloop flow, removed 8 redundant places. [2024-06-28 03:44:17,292 INFO L231 Difference]: Finished difference. Result has 433 places, 330 transitions, 3169 flow [2024-06-28 03:44:17,292 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3093, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3169, PETRI_PLACES=433, PETRI_TRANSITIONS=330} [2024-06-28 03:44:17,292 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 403 predicate places. [2024-06-28 03:44:17,293 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 330 transitions, 3169 flow [2024-06-28 03:44:17,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:17,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:17,293 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:17,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-28 03:44:17,293 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:17,293 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:17,293 INFO L85 PathProgramCache]: Analyzing trace with hash 6254279, now seen corresponding path program 12 times [2024-06-28 03:44:17,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:17,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468103315] [2024-06-28 03:44:17,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:17,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:18,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:18,322 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:18,322 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468103315] [2024-06-28 03:44:18,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468103315] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:18,322 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:18,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:18,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546911958] [2024-06-28 03:44:18,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:18,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:18,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:18,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:18,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:18,432 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:44:18,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 330 transitions, 3169 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:18,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:18,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:44:18,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:18,983 INFO L124 PetriNetUnfolderBase]: 927/1735 cut-off events. [2024-06-28 03:44:18,983 INFO L125 PetriNetUnfolderBase]: For 211541/211541 co-relation queries the response was YES. [2024-06-28 03:44:18,998 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9097 conditions, 1735 events. 927/1735 cut-off events. For 211541/211541 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10603 event pairs, 175 based on Foata normal form. 12/1747 useless extension candidates. Maximal degree in co-relation 8916. Up to 1451 conditions per place. [2024-06-28 03:44:19,001 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 276 selfloop transitions, 70 changer transitions 7/355 dead transitions. [2024-06-28 03:44:19,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 355 transitions, 4023 flow [2024-06-28 03:44:19,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:19,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:19,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 03:44:19,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-28 03:44:19,002 INFO L175 Difference]: Start difference. First operand has 433 places, 330 transitions, 3169 flow. Second operand 12 states and 133 transitions. [2024-06-28 03:44:19,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 355 transitions, 4023 flow [2024-06-28 03:44:19,833 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 355 transitions, 3937 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:44:19,836 INFO L231 Difference]: Finished difference. Result has 434 places, 328 transitions, 3258 flow [2024-06-28 03:44:19,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3083, PETRI_DIFFERENCE_MINUEND_PLACES=422, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3258, PETRI_PLACES=434, PETRI_TRANSITIONS=328} [2024-06-28 03:44:19,837 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 404 predicate places. [2024-06-28 03:44:19,837 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 328 transitions, 3258 flow [2024-06-28 03:44:19,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:19,837 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:19,837 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:19,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-28 03:44:19,837 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:19,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:19,837 INFO L85 PathProgramCache]: Analyzing trace with hash 675909279, now seen corresponding path program 1 times [2024-06-28 03:44:19,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:19,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832011537] [2024-06-28 03:44:19,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:19,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:19,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:20,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:20,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:20,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832011537] [2024-06-28 03:44:20,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832011537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:20,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:20,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:44:20,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408312045] [2024-06-28 03:44:20,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:20,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:44:20,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:20,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:44:20,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:44:20,819 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:44:20,819 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 328 transitions, 3258 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:20,819 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:20,819 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:44:20,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:21,327 INFO L124 PetriNetUnfolderBase]: 937/1761 cut-off events. [2024-06-28 03:44:21,327 INFO L125 PetriNetUnfolderBase]: For 251347/251347 co-relation queries the response was YES. [2024-06-28 03:44:21,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10429 conditions, 1761 events. 937/1761 cut-off events. For 251347/251347 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10748 event pairs, 181 based on Foata normal form. 8/1769 useless extension candidates. Maximal degree in co-relation 10247. Up to 1407 conditions per place. [2024-06-28 03:44:21,351 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 278 selfloop transitions, 67 changer transitions 8/355 dead transitions. [2024-06-28 03:44:21,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 445 places, 355 transitions, 4382 flow [2024-06-28 03:44:21,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:21,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:21,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 03:44:21,352 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-28 03:44:21,352 INFO L175 Difference]: Start difference. First operand has 434 places, 328 transitions, 3258 flow. Second operand 12 states and 134 transitions. [2024-06-28 03:44:21,352 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 445 places, 355 transitions, 4382 flow [2024-06-28 03:44:22,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 355 transitions, 4177 flow, removed 25 selfloop flow, removed 11 redundant places. [2024-06-28 03:44:22,550 INFO L231 Difference]: Finished difference. Result has 435 places, 325 transitions, 3157 flow [2024-06-28 03:44:22,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3053, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3157, PETRI_PLACES=435, PETRI_TRANSITIONS=325} [2024-06-28 03:44:22,551 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 405 predicate places. [2024-06-28 03:44:22,551 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 325 transitions, 3157 flow [2024-06-28 03:44:22,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:22,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:22,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:22,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-28 03:44:22,552 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:22,552 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:22,552 INFO L85 PathProgramCache]: Analyzing trace with hash 665655147, now seen corresponding path program 13 times [2024-06-28 03:44:22,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:22,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984206545] [2024-06-28 03:44:22,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:22,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:22,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:23,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:23,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:23,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984206545] [2024-06-28 03:44:23,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984206545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:23,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:23,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:23,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860007800] [2024-06-28 03:44:23,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:23,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:23,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:23,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:23,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:23,722 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:44:23,723 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 325 transitions, 3157 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:23,723 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:23,723 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:44:23,723 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:24,232 INFO L124 PetriNetUnfolderBase]: 922/1728 cut-off events. [2024-06-28 03:44:24,233 INFO L125 PetriNetUnfolderBase]: For 203728/203728 co-relation queries the response was YES. [2024-06-28 03:44:24,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10266 conditions, 1728 events. 922/1728 cut-off events. For 203728/203728 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 10510 event pairs, 181 based on Foata normal form. 2/1730 useless extension candidates. Maximal degree in co-relation 10083. Up to 1495 conditions per place. [2024-06-28 03:44:24,255 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 281 selfloop transitions, 63 changer transitions 0/346 dead transitions. [2024-06-28 03:44:24,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 443 places, 346 transitions, 3955 flow [2024-06-28 03:44:24,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:24,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:24,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-28 03:44:24,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3387096774193548 [2024-06-28 03:44:24,257 INFO L175 Difference]: Start difference. First operand has 435 places, 325 transitions, 3157 flow. Second operand 12 states and 126 transitions. [2024-06-28 03:44:24,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 443 places, 346 transitions, 3955 flow [2024-06-28 03:44:25,480 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 432 places, 346 transitions, 3825 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:44:25,483 INFO L231 Difference]: Finished difference. Result has 433 places, 326 transitions, 3213 flow [2024-06-28 03:44:25,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3027, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=262, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3213, PETRI_PLACES=433, PETRI_TRANSITIONS=326} [2024-06-28 03:44:25,483 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 403 predicate places. [2024-06-28 03:44:25,483 INFO L495 AbstractCegarLoop]: Abstraction has has 433 places, 326 transitions, 3213 flow [2024-06-28 03:44:25,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:25,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:25,484 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:25,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-28 03:44:25,484 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:25,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:25,484 INFO L85 PathProgramCache]: Analyzing trace with hash 665649567, now seen corresponding path program 14 times [2024-06-28 03:44:25,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:25,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290323387] [2024-06-28 03:44:25,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:25,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:25,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:26,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:26,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:26,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290323387] [2024-06-28 03:44:26,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290323387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:26,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:26,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:26,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827480850] [2024-06-28 03:44:26,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:26,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:26,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:26,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:26,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:26,598 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:44:26,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 433 places, 326 transitions, 3213 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:26,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:26,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:44:26,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:27,105 INFO L124 PetriNetUnfolderBase]: 926/1736 cut-off events. [2024-06-28 03:44:27,106 INFO L125 PetriNetUnfolderBase]: For 205284/205284 co-relation queries the response was YES. [2024-06-28 03:44:27,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10403 conditions, 1736 events. 926/1736 cut-off events. For 205284/205284 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 10580 event pairs, 183 based on Foata normal form. 2/1738 useless extension candidates. Maximal degree in co-relation 10221. Up to 1483 conditions per place. [2024-06-28 03:44:27,129 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 280 selfloop transitions, 65 changer transitions 0/347 dead transitions. [2024-06-28 03:44:27,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 347 transitions, 4013 flow [2024-06-28 03:44:27,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:27,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:27,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-28 03:44:27,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-28 03:44:27,130 INFO L175 Difference]: Start difference. First operand has 433 places, 326 transitions, 3213 flow. Second operand 12 states and 127 transitions. [2024-06-28 03:44:27,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 347 transitions, 4013 flow [2024-06-28 03:44:28,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 434 places, 347 transitions, 3837 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-28 03:44:28,332 INFO L231 Difference]: Finished difference. Result has 435 places, 327 transitions, 3229 flow [2024-06-28 03:44:28,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3037, PETRI_DIFFERENCE_MINUEND_PLACES=423, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=326, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3229, PETRI_PLACES=435, PETRI_TRANSITIONS=327} [2024-06-28 03:44:28,332 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 405 predicate places. [2024-06-28 03:44:28,332 INFO L495 AbstractCegarLoop]: Abstraction has has 435 places, 327 transitions, 3229 flow [2024-06-28 03:44:28,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:28,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:28,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:28,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-28 03:44:28,333 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:28,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:28,333 INFO L85 PathProgramCache]: Analyzing trace with hash 466353357, now seen corresponding path program 15 times [2024-06-28 03:44:28,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:28,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991244668] [2024-06-28 03:44:28,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:28,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:29,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:29,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:29,412 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991244668] [2024-06-28 03:44:29,412 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991244668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:29,412 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:29,412 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:29,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129518983] [2024-06-28 03:44:29,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:29,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:29,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:29,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:29,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:29,543 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:44:29,543 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 435 places, 327 transitions, 3229 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:29,543 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:29,543 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:44:29,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:30,136 INFO L124 PetriNetUnfolderBase]: 930/1744 cut-off events. [2024-06-28 03:44:30,137 INFO L125 PetriNetUnfolderBase]: For 208632/208632 co-relation queries the response was YES. [2024-06-28 03:44:30,156 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10474 conditions, 1744 events. 930/1744 cut-off events. For 208632/208632 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10636 event pairs, 185 based on Foata normal form. 2/1746 useless extension candidates. Maximal degree in co-relation 10291. Up to 1511 conditions per place. [2024-06-28 03:44:30,161 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 288 selfloop transitions, 58 changer transitions 0/348 dead transitions. [2024-06-28 03:44:30,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 348 transitions, 4035 flow [2024-06-28 03:44:30,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:30,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:30,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-28 03:44:30,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-28 03:44:30,162 INFO L175 Difference]: Start difference. First operand has 435 places, 327 transitions, 3229 flow. Second operand 12 states and 127 transitions. [2024-06-28 03:44:30,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 348 transitions, 4035 flow [2024-06-28 03:44:31,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 348 transitions, 3853 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-28 03:44:31,334 INFO L231 Difference]: Finished difference. Result has 437 places, 328 transitions, 3227 flow [2024-06-28 03:44:31,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3047, PETRI_DIFFERENCE_MINUEND_PLACES=425, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3227, PETRI_PLACES=437, PETRI_TRANSITIONS=328} [2024-06-28 03:44:31,334 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 407 predicate places. [2024-06-28 03:44:31,334 INFO L495 AbstractCegarLoop]: Abstraction has has 437 places, 328 transitions, 3227 flow [2024-06-28 03:44:31,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:31,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:31,335 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:31,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-28 03:44:31,335 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:31,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:31,335 INFO L85 PathProgramCache]: Analyzing trace with hash -530454677, now seen corresponding path program 16 times [2024-06-28 03:44:31,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:31,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664894430] [2024-06-28 03:44:31,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:31,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:31,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:32,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:32,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:32,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664894430] [2024-06-28 03:44:32,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664894430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:32,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:32,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:32,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549787203] [2024-06-28 03:44:32,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:32,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:32,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:32,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:32,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:32,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:44:32,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 437 places, 328 transitions, 3227 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:32,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:32,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:44:32,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:33,131 INFO L124 PetriNetUnfolderBase]: 927/1739 cut-off events. [2024-06-28 03:44:33,131 INFO L125 PetriNetUnfolderBase]: For 191929/191929 co-relation queries the response was YES. [2024-06-28 03:44:33,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10043 conditions, 1739 events. 927/1739 cut-off events. For 191929/191929 co-relation queries the response was YES. Maximal size of possible extension queue 183. Compared 10607 event pairs, 200 based on Foata normal form. 2/1741 useless extension candidates. Maximal degree in co-relation 9859. Up to 1506 conditions per place. [2024-06-28 03:44:33,155 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 293 selfloop transitions, 54 changer transitions 0/349 dead transitions. [2024-06-28 03:44:33,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 448 places, 349 transitions, 4037 flow [2024-06-28 03:44:33,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:33,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:33,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-28 03:44:33,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 03:44:33,156 INFO L175 Difference]: Start difference. First operand has 437 places, 328 transitions, 3227 flow. Second operand 12 states and 128 transitions. [2024-06-28 03:44:33,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 448 places, 349 transitions, 4037 flow [2024-06-28 03:44:34,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 349 transitions, 3867 flow, removed 28 selfloop flow, removed 10 redundant places. [2024-06-28 03:44:34,213 INFO L231 Difference]: Finished difference. Result has 439 places, 329 transitions, 3231 flow [2024-06-28 03:44:34,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3057, PETRI_DIFFERENCE_MINUEND_PLACES=427, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3231, PETRI_PLACES=439, PETRI_TRANSITIONS=329} [2024-06-28 03:44:34,213 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 409 predicate places. [2024-06-28 03:44:34,215 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 329 transitions, 3231 flow [2024-06-28 03:44:34,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:34,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:34,215 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:34,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-28 03:44:34,215 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:34,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:34,215 INFO L85 PathProgramCache]: Analyzing trace with hash -530460257, now seen corresponding path program 17 times [2024-06-28 03:44:34,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:34,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331138539] [2024-06-28 03:44:34,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:34,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:34,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:35,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:35,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:35,284 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331138539] [2024-06-28 03:44:35,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331138539] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:35,284 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:35,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:35,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766942888] [2024-06-28 03:44:35,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:35,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:35,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:35,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:35,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:35,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:44:35,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 329 transitions, 3231 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:35,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:35,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:44:35,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:35,988 INFO L124 PetriNetUnfolderBase]: 931/1747 cut-off events. [2024-06-28 03:44:35,988 INFO L125 PetriNetUnfolderBase]: For 194998/194998 co-relation queries the response was YES. [2024-06-28 03:44:36,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10086 conditions, 1747 events. 931/1747 cut-off events. For 194998/194998 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 10668 event pairs, 200 based on Foata normal form. 2/1749 useless extension candidates. Maximal degree in co-relation 9901. Up to 1500 conditions per place. [2024-06-28 03:44:36,013 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 293 selfloop transitions, 55 changer transitions 0/350 dead transitions. [2024-06-28 03:44:36,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 450 places, 350 transitions, 4043 flow [2024-06-28 03:44:36,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:36,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:36,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 03:44:36,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 03:44:36,014 INFO L175 Difference]: Start difference. First operand has 439 places, 329 transitions, 3231 flow. Second operand 12 states and 129 transitions. [2024-06-28 03:44:36,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 450 places, 350 transitions, 4043 flow [2024-06-28 03:44:37,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 440 places, 350 transitions, 3879 flow, removed 29 selfloop flow, removed 10 redundant places. [2024-06-28 03:44:37,122 INFO L231 Difference]: Finished difference. Result has 441 places, 330 transitions, 3245 flow [2024-06-28 03:44:37,122 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3067, PETRI_DIFFERENCE_MINUEND_PLACES=429, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3245, PETRI_PLACES=441, PETRI_TRANSITIONS=330} [2024-06-28 03:44:37,123 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2024-06-28 03:44:37,123 INFO L495 AbstractCegarLoop]: Abstraction has has 441 places, 330 transitions, 3245 flow [2024-06-28 03:44:37,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:37,123 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:37,123 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:37,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-28 03:44:37,123 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:37,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:37,123 INFO L85 PathProgramCache]: Analyzing trace with hash -530604407, now seen corresponding path program 18 times [2024-06-28 03:44:37,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:37,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498047587] [2024-06-28 03:44:37,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:37,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:37,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:38,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:38,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:38,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498047587] [2024-06-28 03:44:38,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498047587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:38,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:38,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:38,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641597950] [2024-06-28 03:44:38,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:38,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:38,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:38,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:38,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:38,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:44:38,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 330 transitions, 3245 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:38,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:38,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:44:38,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:38,916 INFO L124 PetriNetUnfolderBase]: 935/1755 cut-off events. [2024-06-28 03:44:38,916 INFO L125 PetriNetUnfolderBase]: For 198058/198058 co-relation queries the response was YES. [2024-06-28 03:44:38,932 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10145 conditions, 1755 events. 935/1755 cut-off events. For 198058/198058 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 10753 event pairs, 200 based on Foata normal form. 2/1757 useless extension candidates. Maximal degree in co-relation 9959. Up to 1486 conditions per place. [2024-06-28 03:44:38,935 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 293 selfloop transitions, 56 changer transitions 0/351 dead transitions. [2024-06-28 03:44:38,936 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 452 places, 351 transitions, 4059 flow [2024-06-28 03:44:38,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:38,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:38,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-28 03:44:38,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-28 03:44:38,936 INFO L175 Difference]: Start difference. First operand has 441 places, 330 transitions, 3245 flow. Second operand 12 states and 130 transitions. [2024-06-28 03:44:38,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 452 places, 351 transitions, 4059 flow [2024-06-28 03:44:40,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 442 places, 351 transitions, 3891 flow, removed 30 selfloop flow, removed 10 redundant places. [2024-06-28 03:44:40,282 INFO L231 Difference]: Finished difference. Result has 443 places, 331 transitions, 3259 flow [2024-06-28 03:44:40,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3077, PETRI_DIFFERENCE_MINUEND_PLACES=431, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=274, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3259, PETRI_PLACES=443, PETRI_TRANSITIONS=331} [2024-06-28 03:44:40,283 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 413 predicate places. [2024-06-28 03:44:40,283 INFO L495 AbstractCegarLoop]: Abstraction has has 443 places, 331 transitions, 3259 flow [2024-06-28 03:44:40,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:40,283 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:40,283 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:40,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-28 03:44:40,283 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:40,283 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:40,284 INFO L85 PathProgramCache]: Analyzing trace with hash 466347777, now seen corresponding path program 19 times [2024-06-28 03:44:40,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:40,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824833864] [2024-06-28 03:44:40,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:40,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:40,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:41,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:41,280 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:41,280 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824833864] [2024-06-28 03:44:41,280 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824833864] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:41,280 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:41,280 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:41,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631127900] [2024-06-28 03:44:41,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:41,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:41,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:41,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:41,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:41,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:44:41,408 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 443 places, 331 transitions, 3259 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:41,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:41,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:44:41,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:41,971 INFO L124 PetriNetUnfolderBase]: 939/1763 cut-off events. [2024-06-28 03:44:41,971 INFO L125 PetriNetUnfolderBase]: For 201196/201196 co-relation queries the response was YES. [2024-06-28 03:44:41,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10206 conditions, 1763 events. 939/1763 cut-off events. For 201196/201196 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 10797 event pairs, 188 based on Foata normal form. 2/1765 useless extension candidates. Maximal degree in co-relation 10019. Up to 1516 conditions per place. [2024-06-28 03:44:41,995 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 291 selfloop transitions, 59 changer transitions 0/352 dead transitions. [2024-06-28 03:44:41,995 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 454 places, 352 transitions, 4079 flow [2024-06-28 03:44:41,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:41,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:41,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-28 03:44:41,996 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 03:44:41,996 INFO L175 Difference]: Start difference. First operand has 443 places, 331 transitions, 3259 flow. Second operand 12 states and 128 transitions. [2024-06-28 03:44:41,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 454 places, 352 transitions, 4079 flow [2024-06-28 03:44:43,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 352 transitions, 3907 flow, removed 31 selfloop flow, removed 10 redundant places. [2024-06-28 03:44:43,377 INFO L231 Difference]: Finished difference. Result has 445 places, 332 transitions, 3277 flow [2024-06-28 03:44:43,377 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3087, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=272, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3277, PETRI_PLACES=445, PETRI_TRANSITIONS=332} [2024-06-28 03:44:43,377 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 415 predicate places. [2024-06-28 03:44:43,377 INFO L495 AbstractCegarLoop]: Abstraction has has 445 places, 332 transitions, 3277 flow [2024-06-28 03:44:43,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:43,378 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:43,378 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:43,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-28 03:44:43,379 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:43,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:43,380 INFO L85 PathProgramCache]: Analyzing trace with hash 466203627, now seen corresponding path program 20 times [2024-06-28 03:44:43,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:43,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1678567445] [2024-06-28 03:44:43,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:43,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:43,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:44,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:44,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:44,448 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1678567445] [2024-06-28 03:44:44,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1678567445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:44,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:44,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:44,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797158681] [2024-06-28 03:44:44,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:44,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:44,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:44,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:44,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:44,631 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:44:44,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 445 places, 332 transitions, 3277 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:44,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:44,632 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:44:44,632 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:45,128 INFO L124 PetriNetUnfolderBase]: 943/1771 cut-off events. [2024-06-28 03:44:45,128 INFO L125 PetriNetUnfolderBase]: For 204368/204368 co-relation queries the response was YES. [2024-06-28 03:44:45,147 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10271 conditions, 1771 events. 943/1771 cut-off events. For 204368/204368 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 10884 event pairs, 192 based on Foata normal form. 2/1773 useless extension candidates. Maximal degree in co-relation 10083. Up to 1476 conditions per place. [2024-06-28 03:44:45,151 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 288 selfloop transitions, 63 changer transitions 0/353 dead transitions. [2024-06-28 03:44:45,152 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 456 places, 353 transitions, 4099 flow [2024-06-28 03:44:45,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:45,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:45,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-28 03:44:45,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34408602150537637 [2024-06-28 03:44:45,153 INFO L175 Difference]: Start difference. First operand has 445 places, 332 transitions, 3277 flow. Second operand 12 states and 128 transitions. [2024-06-28 03:44:45,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 456 places, 353 transitions, 4099 flow [2024-06-28 03:44:46,334 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 446 places, 353 transitions, 3919 flow, removed 32 selfloop flow, removed 10 redundant places. [2024-06-28 03:44:46,338 INFO L231 Difference]: Finished difference. Result has 447 places, 333 transitions, 3297 flow [2024-06-28 03:44:46,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3097, PETRI_DIFFERENCE_MINUEND_PLACES=435, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=332, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3297, PETRI_PLACES=447, PETRI_TRANSITIONS=333} [2024-06-28 03:44:46,338 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 417 predicate places. [2024-06-28 03:44:46,338 INFO L495 AbstractCegarLoop]: Abstraction has has 447 places, 333 transitions, 3297 flow [2024-06-28 03:44:46,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:46,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:46,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:46,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-28 03:44:46,339 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:46,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:46,339 INFO L85 PathProgramCache]: Analyzing trace with hash -534179327, now seen corresponding path program 21 times [2024-06-28 03:44:46,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:46,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434403644] [2024-06-28 03:44:46,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:46,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:46,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:47,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:47,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:47,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434403644] [2024-06-28 03:44:47,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434403644] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:47,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:47,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:47,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444563093] [2024-06-28 03:44:47,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:47,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:47,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:47,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:47,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:47,509 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:44:47,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 333 transitions, 3297 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:47,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:47,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:44:47,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:47,999 INFO L124 PetriNetUnfolderBase]: 947/1779 cut-off events. [2024-06-28 03:44:47,999 INFO L125 PetriNetUnfolderBase]: For 207570/207570 co-relation queries the response was YES. [2024-06-28 03:44:48,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10344 conditions, 1779 events. 947/1779 cut-off events. For 207570/207570 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 10951 event pairs, 210 based on Foata normal form. 2/1781 useless extension candidates. Maximal degree in co-relation 10155. Up to 1412 conditions per place. [2024-06-28 03:44:48,023 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 289 selfloop transitions, 63 changer transitions 0/354 dead transitions. [2024-06-28 03:44:48,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 458 places, 354 transitions, 4121 flow [2024-06-28 03:44:48,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:44:48,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:44:48,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-28 03:44:48,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3467741935483871 [2024-06-28 03:44:48,024 INFO L175 Difference]: Start difference. First operand has 447 places, 333 transitions, 3297 flow. Second operand 12 states and 129 transitions. [2024-06-28 03:44:48,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 458 places, 354 transitions, 4121 flow [2024-06-28 03:44:49,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 448 places, 354 transitions, 3931 flow, removed 33 selfloop flow, removed 10 redundant places. [2024-06-28 03:44:49,301 INFO L231 Difference]: Finished difference. Result has 449 places, 334 transitions, 3309 flow [2024-06-28 03:44:49,301 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3107, PETRI_DIFFERENCE_MINUEND_PLACES=437, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3309, PETRI_PLACES=449, PETRI_TRANSITIONS=334} [2024-06-28 03:44:49,301 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 419 predicate places. [2024-06-28 03:44:49,301 INFO L495 AbstractCegarLoop]: Abstraction has has 449 places, 334 transitions, 3309 flow [2024-06-28 03:44:49,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:49,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:49,302 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:49,302 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-28 03:44:49,302 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:49,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:49,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1737814347, now seen corresponding path program 22 times [2024-06-28 03:44:49,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:49,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115432868] [2024-06-28 03:44:49,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:49,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:49,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:50,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:50,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:50,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115432868] [2024-06-28 03:44:50,235 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115432868] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:50,235 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:50,235 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:50,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547057036] [2024-06-28 03:44:50,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:50,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:50,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:50,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:50,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:50,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:44:50,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 449 places, 334 transitions, 3309 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:50,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:50,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:44:50,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:50,881 INFO L124 PetriNetUnfolderBase]: 951/1787 cut-off events. [2024-06-28 03:44:50,881 INFO L125 PetriNetUnfolderBase]: For 210805/210805 co-relation queries the response was YES. [2024-06-28 03:44:50,902 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10405 conditions, 1787 events. 951/1787 cut-off events. For 210805/210805 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 11004 event pairs, 205 based on Foata normal form. 2/1789 useless extension candidates. Maximal degree in co-relation 10215. Up to 1555 conditions per place. [2024-06-28 03:44:50,906 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 312 selfloop transitions, 40 changer transitions 0/354 dead transitions. [2024-06-28 03:44:50,906 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 354 transitions, 4129 flow [2024-06-28 03:44:50,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:44:50,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:44:50,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-28 03:44:50,907 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-28 03:44:50,907 INFO L175 Difference]: Start difference. First operand has 449 places, 334 transitions, 3309 flow. Second operand 11 states and 109 transitions. [2024-06-28 03:44:50,907 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 459 places, 354 transitions, 4129 flow [2024-06-28 03:44:52,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 354 transitions, 3937 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-28 03:44:52,257 INFO L231 Difference]: Finished difference. Result has 450 places, 335 transitions, 3281 flow [2024-06-28 03:44:52,257 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3117, PETRI_DIFFERENCE_MINUEND_PLACES=439, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=294, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3281, PETRI_PLACES=450, PETRI_TRANSITIONS=335} [2024-06-28 03:44:52,257 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 420 predicate places. [2024-06-28 03:44:52,258 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 335 transitions, 3281 flow [2024-06-28 03:44:52,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:52,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:52,258 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:52,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-28 03:44:52,258 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:52,258 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:52,258 INFO L85 PathProgramCache]: Analyzing trace with hash -752712079, now seen corresponding path program 23 times [2024-06-28 03:44:52,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:52,258 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738227207] [2024-06-28 03:44:52,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:52,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:52,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:53,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:53,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:53,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738227207] [2024-06-28 03:44:53,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738227207] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:53,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:53,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:53,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135698375] [2024-06-28 03:44:53,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:53,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:53,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:53,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:53,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:53,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:44:53,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 335 transitions, 3281 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:53,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:53,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:44:53,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:54,048 INFO L124 PetriNetUnfolderBase]: 962/1808 cut-off events. [2024-06-28 03:44:54,049 INFO L125 PetriNetUnfolderBase]: For 236560/236560 co-relation queries the response was YES. [2024-06-28 03:44:54,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10975 conditions, 1808 events. 962/1808 cut-off events. For 236560/236560 co-relation queries the response was YES. Maximal size of possible extension queue 191. Compared 11145 event pairs, 214 based on Foata normal form. 2/1810 useless extension candidates. Maximal degree in co-relation 10784. Up to 1480 conditions per place. [2024-06-28 03:44:54,069 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 289 selfloop transitions, 66 changer transitions 0/357 dead transitions. [2024-06-28 03:44:54,069 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 357 transitions, 4475 flow [2024-06-28 03:44:54,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:44:54,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:44:54,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 03:44:54,070 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 03:44:54,070 INFO L175 Difference]: Start difference. First operand has 450 places, 335 transitions, 3281 flow. Second operand 11 states and 117 transitions. [2024-06-28 03:44:54,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 357 transitions, 4475 flow [2024-06-28 03:44:55,551 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 451 places, 357 transitions, 4309 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-28 03:44:55,554 INFO L231 Difference]: Finished difference. Result has 452 places, 337 transitions, 3411 flow [2024-06-28 03:44:55,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3133, PETRI_DIFFERENCE_MINUEND_PLACES=441, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=335, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=270, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3411, PETRI_PLACES=452, PETRI_TRANSITIONS=337} [2024-06-28 03:44:55,555 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 422 predicate places. [2024-06-28 03:44:55,555 INFO L495 AbstractCegarLoop]: Abstraction has has 452 places, 337 transitions, 3411 flow [2024-06-28 03:44:55,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:55,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:55,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:55,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-28 03:44:55,555 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:55,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:55,556 INFO L85 PathProgramCache]: Analyzing trace with hash -752567929, now seen corresponding path program 24 times [2024-06-28 03:44:55,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:55,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549922511] [2024-06-28 03:44:55,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:55,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:56,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:56,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:56,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549922511] [2024-06-28 03:44:56,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [549922511] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:56,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:56,599 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:56,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218983433] [2024-06-28 03:44:56,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:56,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:56,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:56,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:56,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:56,746 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:44:56,746 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 452 places, 337 transitions, 3411 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:56,746 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:56,746 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:44:56,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:44:57,307 INFO L124 PetriNetUnfolderBase]: 966/1816 cut-off events. [2024-06-28 03:44:57,307 INFO L125 PetriNetUnfolderBase]: For 229260/229260 co-relation queries the response was YES. [2024-06-28 03:44:57,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10996 conditions, 1816 events. 966/1816 cut-off events. For 229260/229260 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 11235 event pairs, 225 based on Foata normal form. 2/1818 useless extension candidates. Maximal degree in co-relation 10804. Up to 1556 conditions per place. [2024-06-28 03:44:57,342 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 289 selfloop transitions, 67 changer transitions 0/358 dead transitions. [2024-06-28 03:44:57,343 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 462 places, 358 transitions, 4527 flow [2024-06-28 03:44:57,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:44:57,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:44:57,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-28 03:44:57,344 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34017595307917886 [2024-06-28 03:44:57,344 INFO L175 Difference]: Start difference. First operand has 452 places, 337 transitions, 3411 flow. Second operand 11 states and 116 transitions. [2024-06-28 03:44:57,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 462 places, 358 transitions, 4527 flow [2024-06-28 03:44:58,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 453 places, 358 transitions, 4353 flow, removed 47 selfloop flow, removed 9 redundant places. [2024-06-28 03:44:58,684 INFO L231 Difference]: Finished difference. Result has 454 places, 338 transitions, 3453 flow [2024-06-28 03:44:58,685 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3253, PETRI_DIFFERENCE_MINUEND_PLACES=443, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3453, PETRI_PLACES=454, PETRI_TRANSITIONS=338} [2024-06-28 03:44:58,685 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 424 predicate places. [2024-06-28 03:44:58,685 INFO L495 AbstractCegarLoop]: Abstraction has has 454 places, 338 transitions, 3453 flow [2024-06-28 03:44:58,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:58,685 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:44:58,685 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:44:58,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable195 [2024-06-28 03:44:58,685 INFO L420 AbstractCegarLoop]: === Iteration 197 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:44:58,686 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:44:58,686 INFO L85 PathProgramCache]: Analyzing trace with hash -752562349, now seen corresponding path program 25 times [2024-06-28 03:44:58,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:44:58,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654637619] [2024-06-28 03:44:58,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:44:58,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:44:58,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:44:59,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:44:59,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:44:59,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654637619] [2024-06-28 03:44:59,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654637619] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:44:59,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:44:59,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:44:59,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051182879] [2024-06-28 03:44:59,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:44:59,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:44:59,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:44:59,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:44:59,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:44:59,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:44:59,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 454 places, 338 transitions, 3453 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:44:59,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:44:59,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:44:59,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:00,363 INFO L124 PetriNetUnfolderBase]: 963/1811 cut-off events. [2024-06-28 03:45:00,363 INFO L125 PetriNetUnfolderBase]: For 203225/203225 co-relation queries the response was YES. [2024-06-28 03:45:00,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10563 conditions, 1811 events. 963/1811 cut-off events. For 203225/203225 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 11182 event pairs, 233 based on Foata normal form. 2/1813 useless extension candidates. Maximal degree in co-relation 10371. Up to 1602 conditions per place. [2024-06-28 03:45:00,388 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 288 selfloop transitions, 67 changer transitions 0/357 dead transitions. [2024-06-28 03:45:00,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 464 places, 357 transitions, 4215 flow [2024-06-28 03:45:00,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:00,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:00,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-28 03:45:00,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3343108504398827 [2024-06-28 03:45:00,389 INFO L175 Difference]: Start difference. First operand has 454 places, 338 transitions, 3453 flow. Second operand 11 states and 114 transitions. [2024-06-28 03:45:00,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 464 places, 357 transitions, 4215 flow [2024-06-28 03:45:01,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 357 transitions, 3978 flow, removed 49 selfloop flow, removed 10 redundant places. [2024-06-28 03:45:01,614 INFO L231 Difference]: Finished difference. Result has 455 places, 338 transitions, 3361 flow [2024-06-28 03:45:01,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3216, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3361, PETRI_PLACES=455, PETRI_TRANSITIONS=338} [2024-06-28 03:45:01,614 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 425 predicate places. [2024-06-28 03:45:01,614 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 338 transitions, 3361 flow [2024-06-28 03:45:01,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:01,614 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:01,614 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:01,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable196 [2024-06-28 03:45:01,615 INFO L420 AbstractCegarLoop]: === Iteration 198 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:01,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:01,615 INFO L85 PathProgramCache]: Analyzing trace with hash -756286999, now seen corresponding path program 26 times [2024-06-28 03:45:01,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:01,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135716100] [2024-06-28 03:45:01,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:01,615 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:01,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:02,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:02,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:02,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135716100] [2024-06-28 03:45:02,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2135716100] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:02,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:02,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:02,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930614470] [2024-06-28 03:45:02,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:02,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:02,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:02,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:02,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:02,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:45:02,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 338 transitions, 3361 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:02,757 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:02,757 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:45:02,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:03,331 INFO L124 PetriNetUnfolderBase]: 967/1819 cut-off events. [2024-06-28 03:45:03,331 INFO L125 PetriNetUnfolderBase]: For 202885/202885 co-relation queries the response was YES. [2024-06-28 03:45:03,353 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10525 conditions, 1819 events. 967/1819 cut-off events. For 202885/202885 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 11250 event pairs, 218 based on Foata normal form. 2/1821 useless extension candidates. Maximal degree in co-relation 10333. Up to 1394 conditions per place. [2024-06-28 03:45:03,358 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 289 selfloop transitions, 67 changer transitions 0/358 dead transitions. [2024-06-28 03:45:03,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 465 places, 358 transitions, 4189 flow [2024-06-28 03:45:03,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:03,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:03,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-28 03:45:03,359 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34310850439882695 [2024-06-28 03:45:03,359 INFO L175 Difference]: Start difference. First operand has 455 places, 338 transitions, 3361 flow. Second operand 11 states and 117 transitions. [2024-06-28 03:45:03,359 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 465 places, 358 transitions, 4189 flow [2024-06-28 03:45:04,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 454 places, 358 transitions, 4041 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 03:45:04,539 INFO L231 Difference]: Finished difference. Result has 455 places, 339 transitions, 3427 flow [2024-06-28 03:45:04,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3213, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=271, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3427, PETRI_PLACES=455, PETRI_TRANSITIONS=339} [2024-06-28 03:45:04,540 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 425 predicate places. [2024-06-28 03:45:04,540 INFO L495 AbstractCegarLoop]: Abstraction has has 455 places, 339 transitions, 3427 flow [2024-06-28 03:45:04,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:04,540 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:04,540 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:04,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable197 [2024-06-28 03:45:04,540 INFO L420 AbstractCegarLoop]: === Iteration 199 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:04,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:04,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1097988713, now seen corresponding path program 2 times [2024-06-28 03:45:04,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:04,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565010576] [2024-06-28 03:45:04,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:04,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:05,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:05,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:05,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565010576] [2024-06-28 03:45:05,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565010576] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:05,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:05,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:05,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57777228] [2024-06-28 03:45:05,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:05,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:05,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:05,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:05,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:06,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:45:06,070 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 455 places, 339 transitions, 3427 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:06,070 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:06,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:45:06,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:06,645 INFO L124 PetriNetUnfolderBase]: 1001/1890 cut-off events. [2024-06-28 03:45:06,646 INFO L125 PetriNetUnfolderBase]: For 279236/279236 co-relation queries the response was YES. [2024-06-28 03:45:06,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10828 conditions, 1890 events. 1001/1890 cut-off events. For 279236/279236 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11796 event pairs, 206 based on Foata normal form. 10/1900 useless extension candidates. Maximal degree in co-relation 10636. Up to 1672 conditions per place. [2024-06-28 03:45:06,672 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 310 selfloop transitions, 48 changer transitions 9/369 dead transitions. [2024-06-28 03:45:06,672 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 369 transitions, 4307 flow [2024-06-28 03:45:06,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:45:06,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:45:06,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-28 03:45:06,673 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34139784946236557 [2024-06-28 03:45:06,673 INFO L175 Difference]: Start difference. First operand has 455 places, 339 transitions, 3427 flow. Second operand 12 states and 127 transitions. [2024-06-28 03:45:06,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 369 transitions, 4307 flow [2024-06-28 03:45:08,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 455 places, 369 transitions, 4101 flow, removed 34 selfloop flow, removed 11 redundant places. [2024-06-28 03:45:08,015 INFO L231 Difference]: Finished difference. Result has 457 places, 341 transitions, 3351 flow [2024-06-28 03:45:08,016 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3227, PETRI_DIFFERENCE_MINUEND_PLACES=444, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=291, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3351, PETRI_PLACES=457, PETRI_TRANSITIONS=341} [2024-06-28 03:45:08,016 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 427 predicate places. [2024-06-28 03:45:08,016 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 341 transitions, 3351 flow [2024-06-28 03:45:08,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:08,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:08,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:08,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable198 [2024-06-28 03:45:08,016 INFO L420 AbstractCegarLoop]: === Iteration 200 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:08,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:08,017 INFO L85 PathProgramCache]: Analyzing trace with hash 616105141, now seen corresponding path program 27 times [2024-06-28 03:45:08,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:08,017 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011304861] [2024-06-28 03:45:08,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:08,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:09,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:09,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011304861] [2024-06-28 03:45:09,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011304861] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:09,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:09,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:09,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635713795] [2024-06-28 03:45:09,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:09,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:09,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:09,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:09,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:09,294 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:45:09,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 341 transitions, 3351 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:09,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:09,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:45:09,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:09,997 INFO L124 PetriNetUnfolderBase]: 979/1847 cut-off events. [2024-06-28 03:45:09,997 INFO L125 PetriNetUnfolderBase]: For 200159/200159 co-relation queries the response was YES. [2024-06-28 03:45:10,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10590 conditions, 1847 events. 979/1847 cut-off events. For 200159/200159 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 11512 event pairs, 186 based on Foata normal form. 2/1849 useless extension candidates. Maximal degree in co-relation 10398. Up to 1451 conditions per place. [2024-06-28 03:45:10,023 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 266 selfloop transitions, 92 changer transitions 0/360 dead transitions. [2024-06-28 03:45:10,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 466 places, 360 transitions, 4189 flow [2024-06-28 03:45:10,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:10,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:10,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 03:45:10,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:45:10,024 INFO L175 Difference]: Start difference. First operand has 457 places, 341 transitions, 3351 flow. Second operand 11 states and 121 transitions. [2024-06-28 03:45:10,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 466 places, 360 transitions, 4189 flow [2024-06-28 03:45:11,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 360 transitions, 4093 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-28 03:45:11,358 INFO L231 Difference]: Finished difference. Result has 457 places, 342 transitions, 3519 flow [2024-06-28 03:45:11,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3255, PETRI_DIFFERENCE_MINUEND_PLACES=446, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=91, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3519, PETRI_PLACES=457, PETRI_TRANSITIONS=342} [2024-06-28 03:45:11,359 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 427 predicate places. [2024-06-28 03:45:11,359 INFO L495 AbstractCegarLoop]: Abstraction has has 457 places, 342 transitions, 3519 flow [2024-06-28 03:45:11,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:11,359 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:11,359 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:11,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable199 [2024-06-28 03:45:11,359 INFO L420 AbstractCegarLoop]: === Iteration 201 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:11,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:11,359 INFO L85 PathProgramCache]: Analyzing trace with hash -931822773, now seen corresponding path program 28 times [2024-06-28 03:45:11,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:11,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286716061] [2024-06-28 03:45:11,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:11,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:11,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:12,425 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:12,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:12,425 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286716061] [2024-06-28 03:45:12,425 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286716061] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:12,425 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:12,425 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:12,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067924920] [2024-06-28 03:45:12,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:12,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:12,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:12,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:12,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:12,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:45:12,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 457 places, 342 transitions, 3519 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:12,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:12,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:45:12,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:13,257 INFO L124 PetriNetUnfolderBase]: 983/1855 cut-off events. [2024-06-28 03:45:13,257 INFO L125 PetriNetUnfolderBase]: For 203463/203463 co-relation queries the response was YES. [2024-06-28 03:45:13,274 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10855 conditions, 1855 events. 983/1855 cut-off events. For 203463/203463 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 11591 event pairs, 182 based on Foata normal form. 2/1857 useless extension candidates. Maximal degree in co-relation 10663. Up to 1431 conditions per place. [2024-06-28 03:45:13,277 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 265 selfloop transitions, 94 changer transitions 0/361 dead transitions. [2024-06-28 03:45:13,277 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 361 transitions, 4359 flow [2024-06-28 03:45:13,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:13,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:13,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:45:13,278 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 03:45:13,278 INFO L175 Difference]: Start difference. First operand has 457 places, 342 transitions, 3519 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:45:13,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 467 places, 361 transitions, 4359 flow [2024-06-28 03:45:14,637 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 458 places, 361 transitions, 4105 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-28 03:45:14,640 INFO L231 Difference]: Finished difference. Result has 459 places, 343 transitions, 3535 flow [2024-06-28 03:45:14,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3267, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=248, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3535, PETRI_PLACES=459, PETRI_TRANSITIONS=343} [2024-06-28 03:45:14,641 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 429 predicate places. [2024-06-28 03:45:14,641 INFO L495 AbstractCegarLoop]: Abstraction has has 459 places, 343 transitions, 3535 flow [2024-06-28 03:45:14,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:14,641 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:14,641 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:14,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable200 [2024-06-28 03:45:14,641 INFO L420 AbstractCegarLoop]: === Iteration 202 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:14,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:14,642 INFO L85 PathProgramCache]: Analyzing trace with hash 815406931, now seen corresponding path program 29 times [2024-06-28 03:45:14,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:14,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651607426] [2024-06-28 03:45:14,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:14,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:15,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:15,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:15,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651607426] [2024-06-28 03:45:15,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651607426] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:15,686 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:15,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:15,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538493245] [2024-06-28 03:45:15,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:15,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:15,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:15,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:15,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:15,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:45:15,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 343 transitions, 3535 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:15,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:15,853 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:45:15,853 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:16,442 INFO L124 PetriNetUnfolderBase]: 987/1863 cut-off events. [2024-06-28 03:45:16,442 INFO L125 PetriNetUnfolderBase]: For 203461/203461 co-relation queries the response was YES. [2024-06-28 03:45:16,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10896 conditions, 1863 events. 987/1863 cut-off events. For 203461/203461 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 11638 event pairs, 184 based on Foata normal form. 2/1865 useless extension candidates. Maximal degree in co-relation 10703. Up to 1467 conditions per place. [2024-06-28 03:45:16,468 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 261 selfloop transitions, 99 changer transitions 0/362 dead transitions. [2024-06-28 03:45:16,468 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 469 places, 362 transitions, 4379 flow [2024-06-28 03:45:16,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:16,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:16,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-28 03:45:16,469 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3519061583577713 [2024-06-28 03:45:16,469 INFO L175 Difference]: Start difference. First operand has 459 places, 343 transitions, 3535 flow. Second operand 11 states and 120 transitions. [2024-06-28 03:45:16,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 469 places, 362 transitions, 4379 flow [2024-06-28 03:45:17,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 362 transitions, 4121 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-28 03:45:17,790 INFO L231 Difference]: Finished difference. Result has 461 places, 344 transitions, 3557 flow [2024-06-28 03:45:17,790 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3279, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3557, PETRI_PLACES=461, PETRI_TRANSITIONS=344} [2024-06-28 03:45:17,791 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 431 predicate places. [2024-06-28 03:45:17,791 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 344 transitions, 3557 flow [2024-06-28 03:45:17,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:17,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:17,791 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:17,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable201 [2024-06-28 03:45:17,791 INFO L420 AbstractCegarLoop]: === Iteration 203 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:17,791 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:17,791 INFO L85 PathProgramCache]: Analyzing trace with hash 615955411, now seen corresponding path program 30 times [2024-06-28 03:45:17,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:17,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113656245] [2024-06-28 03:45:17,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:17,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:18,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:18,850 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:18,850 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113656245] [2024-06-28 03:45:18,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113656245] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:18,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:18,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:18,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770678470] [2024-06-28 03:45:18,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:18,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:18,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:18,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:18,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:18,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:45:18,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 344 transitions, 3557 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:18,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:18,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:45:18,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:19,604 INFO L124 PetriNetUnfolderBase]: 1027/1943 cut-off events. [2024-06-28 03:45:19,604 INFO L125 PetriNetUnfolderBase]: For 319376/319376 co-relation queries the response was YES. [2024-06-28 03:45:19,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13071 conditions, 1943 events. 1027/1943 cut-off events. For 319376/319376 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12159 event pairs, 204 based on Foata normal form. 2/1945 useless extension candidates. Maximal degree in co-relation 12877. Up to 1359 conditions per place. [2024-06-28 03:45:19,633 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 266 selfloop transitions, 101 changer transitions 0/369 dead transitions. [2024-06-28 03:45:19,633 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 471 places, 369 transitions, 4805 flow [2024-06-28 03:45:19,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:19,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:19,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:45:19,634 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 03:45:19,634 INFO L175 Difference]: Start difference. First operand has 461 places, 344 transitions, 3557 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:45:19,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 471 places, 369 transitions, 4805 flow [2024-06-28 03:45:21,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 462 places, 369 transitions, 4533 flow, removed 39 selfloop flow, removed 9 redundant places. [2024-06-28 03:45:21,305 INFO L231 Difference]: Finished difference. Result has 463 places, 346 transitions, 3645 flow [2024-06-28 03:45:21,306 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3291, PETRI_DIFFERENCE_MINUEND_PLACES=452, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3645, PETRI_PLACES=463, PETRI_TRANSITIONS=346} [2024-06-28 03:45:21,306 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 433 predicate places. [2024-06-28 03:45:21,306 INFO L495 AbstractCegarLoop]: Abstraction has has 463 places, 346 transitions, 3645 flow [2024-06-28 03:45:21,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:21,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:21,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:21,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable202 [2024-06-28 03:45:21,306 INFO L420 AbstractCegarLoop]: === Iteration 204 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:21,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:21,306 INFO L85 PathProgramCache]: Analyzing trace with hash 621677267, now seen corresponding path program 3 times [2024-06-28 03:45:21,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:21,307 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635690381] [2024-06-28 03:45:21,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:21,307 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:21,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:22,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:22,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:22,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635690381] [2024-06-28 03:45:22,541 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635690381] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:22,541 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:22,541 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:22,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096639624] [2024-06-28 03:45:22,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:22,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:22,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:22,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:22,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:22,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:45:22,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 463 places, 346 transitions, 3645 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:22,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:22,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:45:22,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:23,320 INFO L124 PetriNetUnfolderBase]: 1049/1989 cut-off events. [2024-06-28 03:45:23,320 INFO L125 PetriNetUnfolderBase]: For 391713/391713 co-relation queries the response was YES. [2024-06-28 03:45:23,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13134 conditions, 1989 events. 1049/1989 cut-off events. For 391713/391713 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 12531 event pairs, 214 based on Foata normal form. 10/1999 useless extension candidates. Maximal degree in co-relation 12939. Up to 1574 conditions per place. [2024-06-28 03:45:23,348 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 273 selfloop transitions, 88 changer transitions 9/372 dead transitions. [2024-06-28 03:45:23,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 474 places, 372 transitions, 4501 flow [2024-06-28 03:45:23,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:45:23,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:45:23,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-28 03:45:23,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:45:23,349 INFO L175 Difference]: Start difference. First operand has 463 places, 346 transitions, 3645 flow. Second operand 12 states and 132 transitions. [2024-06-28 03:45:23,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 474 places, 372 transitions, 4501 flow [2024-06-28 03:45:25,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 372 transitions, 4269 flow, removed 46 selfloop flow, removed 9 redundant places. [2024-06-28 03:45:25,024 INFO L231 Difference]: Finished difference. Result has 467 places, 345 transitions, 3590 flow [2024-06-28 03:45:25,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3415, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=88, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3590, PETRI_PLACES=467, PETRI_TRANSITIONS=345} [2024-06-28 03:45:25,024 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 437 predicate places. [2024-06-28 03:45:25,024 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 345 transitions, 3590 flow [2024-06-28 03:45:25,025 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:25,025 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:25,025 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:25,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable203 [2024-06-28 03:45:25,025 INFO L420 AbstractCegarLoop]: === Iteration 205 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:25,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:25,025 INFO L85 PathProgramCache]: Analyzing trace with hash -732520983, now seen corresponding path program 31 times [2024-06-28 03:45:25,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:25,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511722788] [2024-06-28 03:45:25,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:25,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:25,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:26,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:26,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511722788] [2024-06-28 03:45:26,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511722788] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:26,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:26,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:26,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420973388] [2024-06-28 03:45:26,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:26,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:26,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:26,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:26,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:26,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:45:26,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 345 transitions, 3590 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:26,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:26,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:45:26,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:26,794 INFO L124 PetriNetUnfolderBase]: 1027/1947 cut-off events. [2024-06-28 03:45:26,794 INFO L125 PetriNetUnfolderBase]: For 318874/318874 co-relation queries the response was YES. [2024-06-28 03:45:26,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12976 conditions, 1947 events. 1027/1947 cut-off events. For 318874/318874 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 12226 event pairs, 200 based on Foata normal form. 2/1949 useless extension candidates. Maximal degree in co-relation 12780. Up to 1447 conditions per place. [2024-06-28 03:45:26,821 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 264 selfloop transitions, 103 changer transitions 0/369 dead transitions. [2024-06-28 03:45:26,821 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 369 transitions, 4750 flow [2024-06-28 03:45:26,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:26,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:26,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 03:45:26,822 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 03:45:26,822 INFO L175 Difference]: Start difference. First operand has 467 places, 345 transitions, 3590 flow. Second operand 11 states and 125 transitions. [2024-06-28 03:45:26,822 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 369 transitions, 4750 flow [2024-06-28 03:45:28,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 464 places, 369 transitions, 4578 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:45:28,351 INFO L231 Difference]: Finished difference. Result has 465 places, 346 transitions, 3688 flow [2024-06-28 03:45:28,351 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3420, PETRI_DIFFERENCE_MINUEND_PLACES=454, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=243, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3688, PETRI_PLACES=465, PETRI_TRANSITIONS=346} [2024-06-28 03:45:28,351 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 435 predicate places. [2024-06-28 03:45:28,351 INFO L495 AbstractCegarLoop]: Abstraction has has 465 places, 346 transitions, 3688 flow [2024-06-28 03:45:28,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:28,352 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:28,352 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:28,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable204 [2024-06-28 03:45:28,352 INFO L420 AbstractCegarLoop]: === Iteration 206 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:28,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:28,352 INFO L85 PathProgramCache]: Analyzing trace with hash -1928625227, now seen corresponding path program 32 times [2024-06-28 03:45:28,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:28,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672065778] [2024-06-28 03:45:28,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:28,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:28,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:29,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:29,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:29,551 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672065778] [2024-06-28 03:45:29,551 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672065778] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:29,551 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:29,551 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:29,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027530787] [2024-06-28 03:45:29,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:29,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:29,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:29,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:29,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:29,673 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:45:29,673 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 465 places, 346 transitions, 3688 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:29,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:29,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:45:29,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:30,407 INFO L124 PetriNetUnfolderBase]: 1031/1955 cut-off events. [2024-06-28 03:45:30,408 INFO L125 PetriNetUnfolderBase]: For 321118/321118 co-relation queries the response was YES. [2024-06-28 03:45:30,432 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13178 conditions, 1955 events. 1031/1955 cut-off events. For 321118/321118 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 12242 event pairs, 232 based on Foata normal form. 2/1957 useless extension candidates. Maximal degree in co-relation 12984. Up to 1563 conditions per place. [2024-06-28 03:45:30,437 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 277 selfloop transitions, 86 changer transitions 0/365 dead transitions. [2024-06-28 03:45:30,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 475 places, 365 transitions, 4532 flow [2024-06-28 03:45:30,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:30,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:30,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:45:30,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 03:45:30,438 INFO L175 Difference]: Start difference. First operand has 465 places, 346 transitions, 3688 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:45:30,438 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 475 places, 365 transitions, 4532 flow [2024-06-28 03:45:31,990 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 365 transitions, 4268 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-28 03:45:31,993 INFO L231 Difference]: Finished difference. Result has 467 places, 347 transitions, 3672 flow [2024-06-28 03:45:31,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3424, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=260, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3672, PETRI_PLACES=467, PETRI_TRANSITIONS=347} [2024-06-28 03:45:31,994 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 437 predicate places. [2024-06-28 03:45:31,994 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 347 transitions, 3672 flow [2024-06-28 03:45:31,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:31,994 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:31,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:31,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable205 [2024-06-28 03:45:31,994 INFO L420 AbstractCegarLoop]: === Iteration 207 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:31,995 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:31,995 INFO L85 PathProgramCache]: Analyzing trace with hash 822758581, now seen corresponding path program 33 times [2024-06-28 03:45:31,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:31,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398074400] [2024-06-28 03:45:31,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:31,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:32,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:32,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:32,956 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398074400] [2024-06-28 03:45:32,956 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398074400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:32,956 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:32,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:32,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197365517] [2024-06-28 03:45:32,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:32,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:32,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:32,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:32,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:33,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:45:33,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 347 transitions, 3672 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:33,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:33,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:45:33,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:33,712 INFO L124 PetriNetUnfolderBase]: 1015/1927 cut-off events. [2024-06-28 03:45:33,712 INFO L125 PetriNetUnfolderBase]: For 304420/304420 co-relation queries the response was YES. [2024-06-28 03:45:33,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11227 conditions, 1927 events. 1015/1927 cut-off events. For 304420/304420 co-relation queries the response was YES. Maximal size of possible extension queue 204. Compared 12155 event pairs, 192 based on Foata normal form. 12/1939 useless extension candidates. Maximal degree in co-relation 11032. Up to 1493 conditions per place. [2024-06-28 03:45:33,739 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 255 selfloop transitions, 105 changer transitions 7/369 dead transitions. [2024-06-28 03:45:33,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 369 transitions, 4496 flow [2024-06-28 03:45:33,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:33,739 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:33,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:45:33,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 03:45:33,740 INFO L175 Difference]: Start difference. First operand has 467 places, 347 transitions, 3672 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:45:33,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 369 transitions, 4496 flow [2024-06-28 03:45:34,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 369 transitions, 4222 flow, removed 53 selfloop flow, removed 9 redundant places. [2024-06-28 03:45:34,983 INFO L231 Difference]: Finished difference. Result has 469 places, 344 transitions, 3591 flow [2024-06-28 03:45:34,983 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3398, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3591, PETRI_PLACES=469, PETRI_TRANSITIONS=344} [2024-06-28 03:45:34,984 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 439 predicate places. [2024-06-28 03:45:34,984 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 344 transitions, 3591 flow [2024-06-28 03:45:34,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:34,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:34,984 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:34,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable206 [2024-06-28 03:45:34,984 INFO L420 AbstractCegarLoop]: === Iteration 208 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:34,984 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:34,984 INFO L85 PathProgramCache]: Analyzing trace with hash -380708473, now seen corresponding path program 34 times [2024-06-28 03:45:34,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:34,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599962461] [2024-06-28 03:45:34,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:34,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:34,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:36,035 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:36,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:36,036 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599962461] [2024-06-28 03:45:36,036 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1599962461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:36,036 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:36,036 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:36,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568765933] [2024-06-28 03:45:36,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:36,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:36,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:36,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:36,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:36,172 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:45:36,172 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 344 transitions, 3591 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:36,172 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:36,172 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:45:36,172 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:36,853 INFO L124 PetriNetUnfolderBase]: 995/1887 cut-off events. [2024-06-28 03:45:36,853 INFO L125 PetriNetUnfolderBase]: For 208862/208862 co-relation queries the response was YES. [2024-06-28 03:45:36,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11072 conditions, 1887 events. 995/1887 cut-off events. For 208862/208862 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 11894 event pairs, 216 based on Foata normal form. 2/1889 useless extension candidates. Maximal degree in co-relation 10876. Up to 1473 conditions per place. [2024-06-28 03:45:36,877 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 276 selfloop transitions, 85 changer transitions 0/363 dead transitions. [2024-06-28 03:45:36,877 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 363 transitions, 4431 flow [2024-06-28 03:45:36,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:36,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:36,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-28 03:45:36,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35777126099706746 [2024-06-28 03:45:36,879 INFO L175 Difference]: Start difference. First operand has 469 places, 344 transitions, 3591 flow. Second operand 11 states and 122 transitions. [2024-06-28 03:45:36,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 363 transitions, 4431 flow [2024-06-28 03:45:38,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 466 places, 363 transitions, 4115 flow, removed 7 selfloop flow, removed 13 redundant places. [2024-06-28 03:45:38,026 INFO L231 Difference]: Finished difference. Result has 467 places, 345 transitions, 3523 flow [2024-06-28 03:45:38,026 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3277, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3523, PETRI_PLACES=467, PETRI_TRANSITIONS=345} [2024-06-28 03:45:38,026 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 437 predicate places. [2024-06-28 03:45:38,026 INFO L495 AbstractCegarLoop]: Abstraction has has 467 places, 345 transitions, 3523 flow [2024-06-28 03:45:38,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:38,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:38,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:38,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable207 [2024-06-28 03:45:38,027 INFO L420 AbstractCegarLoop]: === Iteration 209 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:38,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:38,027 INFO L85 PathProgramCache]: Analyzing trace with hash -380852623, now seen corresponding path program 35 times [2024-06-28 03:45:38,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:38,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001158249] [2024-06-28 03:45:38,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:38,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:39,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:39,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:39,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001158249] [2024-06-28 03:45:39,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001158249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:39,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:39,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:39,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619722530] [2024-06-28 03:45:39,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:39,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:39,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:39,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:39,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:39,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:45:39,213 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 345 transitions, 3523 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:39,213 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:39,213 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:45:39,213 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:39,765 INFO L124 PetriNetUnfolderBase]: 999/1895 cut-off events. [2024-06-28 03:45:39,765 INFO L125 PetriNetUnfolderBase]: For 210780/210780 co-relation queries the response was YES. [2024-06-28 03:45:39,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11040 conditions, 1895 events. 999/1895 cut-off events. For 210780/210780 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 11943 event pairs, 214 based on Foata normal form. 2/1897 useless extension candidates. Maximal degree in co-relation 10844. Up to 1437 conditions per place. [2024-06-28 03:45:39,793 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 275 selfloop transitions, 87 changer transitions 0/364 dead transitions. [2024-06-28 03:45:39,794 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 477 places, 364 transitions, 4363 flow [2024-06-28 03:45:39,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:39,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:39,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:45:39,795 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 03:45:39,795 INFO L175 Difference]: Start difference. First operand has 467 places, 345 transitions, 3523 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:45:39,795 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 477 places, 364 transitions, 4363 flow [2024-06-28 03:45:41,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 364 transitions, 4127 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-28 03:45:41,183 INFO L231 Difference]: Finished difference. Result has 469 places, 346 transitions, 3539 flow [2024-06-28 03:45:41,183 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3289, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=258, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3539, PETRI_PLACES=469, PETRI_TRANSITIONS=346} [2024-06-28 03:45:41,183 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 439 predicate places. [2024-06-28 03:45:41,183 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 346 transitions, 3539 flow [2024-06-28 03:45:41,184 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:41,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:41,184 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:41,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable208 [2024-06-28 03:45:41,184 INFO L420 AbstractCegarLoop]: === Iteration 210 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:41,185 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:41,185 INFO L85 PathProgramCache]: Analyzing trace with hash -1085808447, now seen corresponding path program 36 times [2024-06-28 03:45:41,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:41,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176734240] [2024-06-28 03:45:41,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:41,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:41,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:42,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:42,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:42,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176734240] [2024-06-28 03:45:42,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176734240] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:42,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:42,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:42,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706222369] [2024-06-28 03:45:42,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:42,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:42,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:42,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:42,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:42,396 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:45:42,396 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 346 transitions, 3539 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:42,396 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:42,396 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:45:42,396 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:42,966 INFO L124 PetriNetUnfolderBase]: 1003/1903 cut-off events. [2024-06-28 03:45:42,967 INFO L125 PetriNetUnfolderBase]: For 210998/210998 co-relation queries the response was YES. [2024-06-28 03:45:42,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11085 conditions, 1903 events. 1003/1903 cut-off events. For 210998/210998 co-relation queries the response was YES. Maximal size of possible extension queue 203. Compared 11999 event pairs, 222 based on Foata normal form. 2/1905 useless extension candidates. Maximal degree in co-relation 10888. Up to 1249 conditions per place. [2024-06-28 03:45:42,997 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 262 selfloop transitions, 101 changer transitions 0/365 dead transitions. [2024-06-28 03:45:42,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 479 places, 365 transitions, 4379 flow [2024-06-28 03:45:42,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:42,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:42,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 03:45:42,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:45:42,998 INFO L175 Difference]: Start difference. First operand has 469 places, 346 transitions, 3539 flow. Second operand 11 states and 121 transitions. [2024-06-28 03:45:42,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 479 places, 365 transitions, 4379 flow [2024-06-28 03:45:44,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 470 places, 365 transitions, 4139 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-28 03:45:44,154 INFO L231 Difference]: Finished difference. Result has 471 places, 347 transitions, 3579 flow [2024-06-28 03:45:44,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3301, PETRI_DIFFERENCE_MINUEND_PLACES=460, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=245, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3579, PETRI_PLACES=471, PETRI_TRANSITIONS=347} [2024-06-28 03:45:44,154 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 441 predicate places. [2024-06-28 03:45:44,155 INFO L495 AbstractCegarLoop]: Abstraction has has 471 places, 347 transitions, 3579 flow [2024-06-28 03:45:44,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:44,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:44,155 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:44,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable209 [2024-06-28 03:45:44,155 INFO L420 AbstractCegarLoop]: === Iteration 211 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:44,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:44,155 INFO L85 PathProgramCache]: Analyzing trace with hash 121385613, now seen corresponding path program 4 times [2024-06-28 03:45:44,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:44,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525989634] [2024-06-28 03:45:44,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:44,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:44,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:45,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:45,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:45,388 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525989634] [2024-06-28 03:45:45,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525989634] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:45,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:45,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:45,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023560169] [2024-06-28 03:45:45,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:45,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:45,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:45,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:45,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:45,485 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:45:45,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 471 places, 347 transitions, 3579 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:45,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:45,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:45:45,485 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:46,102 INFO L124 PetriNetUnfolderBase]: 1025/1949 cut-off events. [2024-06-28 03:45:46,102 INFO L125 PetriNetUnfolderBase]: For 286974/286974 co-relation queries the response was YES. [2024-06-28 03:45:46,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11212 conditions, 1949 events. 1025/1949 cut-off events. For 286974/286974 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 12333 event pairs, 196 based on Foata normal form. 10/1959 useless extension candidates. Maximal degree in co-relation 11014. Up to 1534 conditions per place. [2024-06-28 03:45:46,129 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 257 selfloop transitions, 105 changer transitions 9/373 dead transitions. [2024-06-28 03:45:46,130 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 373 transitions, 4439 flow [2024-06-28 03:45:46,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:45:46,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:45:46,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-28 03:45:46,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-28 03:45:46,130 INFO L175 Difference]: Start difference. First operand has 471 places, 347 transitions, 3579 flow. Second operand 12 states and 130 transitions. [2024-06-28 03:45:46,131 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 373 transitions, 4439 flow [2024-06-28 03:45:47,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 373 transitions, 4169 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-28 03:45:47,527 INFO L231 Difference]: Finished difference. Result has 475 places, 346 transitions, 3524 flow [2024-06-28 03:45:47,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3313, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3524, PETRI_PLACES=475, PETRI_TRANSITIONS=346} [2024-06-28 03:45:47,527 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 445 predicate places. [2024-06-28 03:45:47,528 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 346 transitions, 3524 flow [2024-06-28 03:45:47,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:47,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:47,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:47,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable210 [2024-06-28 03:45:47,528 INFO L420 AbstractCegarLoop]: === Iteration 212 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:47,528 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:47,528 INFO L85 PathProgramCache]: Analyzing trace with hash -937983521, now seen corresponding path program 5 times [2024-06-28 03:45:47,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:47,528 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [427889355] [2024-06-28 03:45:47,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:47,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:47,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:48,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:48,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:48,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [427889355] [2024-06-28 03:45:48,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [427889355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:48,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:48,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:48,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577838864] [2024-06-28 03:45:48,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:48,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:48,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:48,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:48,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:48,935 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:45:48,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 346 transitions, 3524 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:48,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:48,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:45:48,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:49,586 INFO L124 PetriNetUnfolderBase]: 1021/1945 cut-off events. [2024-06-28 03:45:49,586 INFO L125 PetriNetUnfolderBase]: For 284564/284564 co-relation queries the response was YES. [2024-06-28 03:45:49,609 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11072 conditions, 1945 events. 1021/1945 cut-off events. For 284564/284564 co-relation queries the response was YES. Maximal size of possible extension queue 206. Compared 12322 event pairs, 226 based on Foata normal form. 10/1955 useless extension candidates. Maximal degree in co-relation 10872. Up to 1530 conditions per place. [2024-06-28 03:45:49,614 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 281 selfloop transitions, 80 changer transitions 9/372 dead transitions. [2024-06-28 03:45:49,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 372 transitions, 4382 flow [2024-06-28 03:45:49,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:45:49,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:45:49,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 03:45:49,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-28 03:45:49,615 INFO L175 Difference]: Start difference. First operand has 475 places, 346 transitions, 3524 flow. Second operand 12 states and 133 transitions. [2024-06-28 03:45:49,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 372 transitions, 4382 flow [2024-06-28 03:45:50,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 372 transitions, 4158 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 03:45:50,801 INFO L231 Difference]: Finished difference. Result has 475 places, 345 transitions, 3465 flow [2024-06-28 03:45:50,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3304, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=80, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=266, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3465, PETRI_PLACES=475, PETRI_TRANSITIONS=345} [2024-06-28 03:45:50,801 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 445 predicate places. [2024-06-28 03:45:50,801 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 345 transitions, 3465 flow [2024-06-28 03:45:50,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:50,801 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:50,801 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:50,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable211 [2024-06-28 03:45:50,801 INFO L420 AbstractCegarLoop]: === Iteration 213 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:50,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:50,802 INFO L85 PathProgramCache]: Analyzing trace with hash -732305657, now seen corresponding path program 6 times [2024-06-28 03:45:50,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:50,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128415799] [2024-06-28 03:45:50,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:50,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:50,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:52,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:52,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:52,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128415799] [2024-06-28 03:45:52,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128415799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:52,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:52,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:52,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [136228084] [2024-06-28 03:45:52,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:52,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:52,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:52,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:52,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:52,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:45:52,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 345 transitions, 3465 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:52,191 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:52,191 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:45:52,191 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:52,775 INFO L124 PetriNetUnfolderBase]: 1014/1936 cut-off events. [2024-06-28 03:45:52,775 INFO L125 PetriNetUnfolderBase]: For 284506/284506 co-relation queries the response was YES. [2024-06-28 03:45:52,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10944 conditions, 1936 events. 1014/1936 cut-off events. For 284506/284506 co-relation queries the response was YES. Maximal size of possible extension queue 205. Compared 12301 event pairs, 198 based on Foata normal form. 10/1946 useless extension candidates. Maximal degree in co-relation 10744. Up to 1521 conditions per place. [2024-06-28 03:45:52,803 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 267 selfloop transitions, 93 changer transitions 9/371 dead transitions. [2024-06-28 03:45:52,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 371 transitions, 4321 flow [2024-06-28 03:45:52,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:45:52,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:45:52,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-28 03:45:52,804 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34946236559139787 [2024-06-28 03:45:52,804 INFO L175 Difference]: Start difference. First operand has 475 places, 345 transitions, 3465 flow. Second operand 12 states and 130 transitions. [2024-06-28 03:45:52,804 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 371 transitions, 4321 flow [2024-06-28 03:45:54,066 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 371 transitions, 4147 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 03:45:54,069 INFO L231 Difference]: Finished difference. Result has 475 places, 344 transitions, 3483 flow [2024-06-28 03:45:54,069 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3295, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=252, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3483, PETRI_PLACES=475, PETRI_TRANSITIONS=344} [2024-06-28 03:45:54,069 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 445 predicate places. [2024-06-28 03:45:54,070 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 344 transitions, 3483 flow [2024-06-28 03:45:54,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:54,070 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:54,070 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:54,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable212 [2024-06-28 03:45:54,070 INFO L420 AbstractCegarLoop]: === Iteration 214 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:54,070 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:54,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1402392019, now seen corresponding path program 7 times [2024-06-28 03:45:54,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:54,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497469545] [2024-06-28 03:45:54,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:54,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:55,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:55,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:55,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497469545] [2024-06-28 03:45:55,211 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497469545] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:55,212 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:55,212 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:55,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907823165] [2024-06-28 03:45:55,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:55,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:55,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:55,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:55,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:55,393 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:45:55,393 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 344 transitions, 3483 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:55,393 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:55,393 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:45:55,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:55,999 INFO L124 PetriNetUnfolderBase]: 1022/1960 cut-off events. [2024-06-28 03:45:55,999 INFO L125 PetriNetUnfolderBase]: For 342390/342390 co-relation queries the response was YES. [2024-06-28 03:45:56,022 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12204 conditions, 1960 events. 1022/1960 cut-off events. For 342390/342390 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 12476 event pairs, 210 based on Foata normal form. 8/1968 useless extension candidates. Maximal degree in co-relation 12004. Up to 1340 conditions per place. [2024-06-28 03:45:56,027 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 260 selfloop transitions, 100 changer transitions 8/370 dead transitions. [2024-06-28 03:45:56,027 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 370 transitions, 4625 flow [2024-06-28 03:45:56,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:45:56,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:45:56,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-28 03:45:56,028 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-28 03:45:56,028 INFO L175 Difference]: Start difference. First operand has 475 places, 344 transitions, 3483 flow. Second operand 12 states and 131 transitions. [2024-06-28 03:45:56,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 370 transitions, 4625 flow [2024-06-28 03:45:57,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 370 transitions, 4427 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:45:57,594 INFO L231 Difference]: Finished difference. Result has 474 places, 341 transitions, 3462 flow [2024-06-28 03:45:57,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3287, PETRI_DIFFERENCE_MINUEND_PLACES=462, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3462, PETRI_PLACES=474, PETRI_TRANSITIONS=341} [2024-06-28 03:45:57,594 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 444 predicate places. [2024-06-28 03:45:57,594 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 341 transitions, 3462 flow [2024-06-28 03:45:57,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:57,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:45:57,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:45:57,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable213 [2024-06-28 03:45:57,595 INFO L420 AbstractCegarLoop]: === Iteration 215 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:45:57,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:45:57,595 INFO L85 PathProgramCache]: Analyzing trace with hash 434017401, now seen corresponding path program 37 times [2024-06-28 03:45:57,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:45:57,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666341161] [2024-06-28 03:45:57,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:45:57,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:45:57,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:45:58,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:45:58,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:45:58,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666341161] [2024-06-28 03:45:58,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666341161] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:45:58,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:45:58,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:45:58,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954587168] [2024-06-28 03:45:58,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:45:58,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:45:58,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:45:58,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:45:58,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:45:58,690 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:45:58,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 341 transitions, 3462 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:45:58,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:45:58,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:45:58,690 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:45:59,263 INFO L124 PetriNetUnfolderBase]: 1023/1963 cut-off events. [2024-06-28 03:45:59,263 INFO L125 PetriNetUnfolderBase]: For 384820/384820 co-relation queries the response was YES. [2024-06-28 03:45:59,286 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12335 conditions, 1963 events. 1023/1963 cut-off events. For 384820/384820 co-relation queries the response was YES. Maximal size of possible extension queue 200. Compared 12474 event pairs, 207 based on Foata normal form. 12/1975 useless extension candidates. Maximal degree in co-relation 12136. Up to 1289 conditions per place. [2024-06-28 03:45:59,291 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 215 selfloop transitions, 139 changer transitions 7/363 dead transitions. [2024-06-28 03:45:59,291 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 363 transitions, 4340 flow [2024-06-28 03:45:59,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:45:59,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:45:59,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 129 transitions. [2024-06-28 03:45:59,292 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3782991202346041 [2024-06-28 03:45:59,292 INFO L175 Difference]: Start difference. First operand has 474 places, 341 transitions, 3462 flow. Second operand 11 states and 129 transitions. [2024-06-28 03:45:59,292 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 363 transitions, 4340 flow [2024-06-28 03:46:00,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 363 transitions, 4146 flow, removed 4 selfloop flow, removed 13 redundant places. [2024-06-28 03:46:00,908 INFO L231 Difference]: Finished difference. Result has 469 places, 339 transitions, 3600 flow [2024-06-28 03:46:00,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3268, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=138, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3600, PETRI_PLACES=469, PETRI_TRANSITIONS=339} [2024-06-28 03:46:00,908 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 439 predicate places. [2024-06-28 03:46:00,908 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 339 transitions, 3600 flow [2024-06-28 03:46:00,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:00,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:00,908 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:00,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable214 [2024-06-28 03:46:00,909 INFO L420 AbstractCegarLoop]: === Iteration 216 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:00,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:00,909 INFO L85 PathProgramCache]: Analyzing trace with hash 434294107, now seen corresponding path program 8 times [2024-06-28 03:46:00,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:00,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993672586] [2024-06-28 03:46:00,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:00,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:00,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:02,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:02,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:02,100 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993672586] [2024-06-28 03:46:02,100 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993672586] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:02,100 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:02,100 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:46:02,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612825999] [2024-06-28 03:46:02,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:02,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:46:02,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:02,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:46:02,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:46:02,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:46:02,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 339 transitions, 3600 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:02,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:02,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:46:02,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:02,861 INFO L124 PetriNetUnfolderBase]: 1033/1989 cut-off events. [2024-06-28 03:46:02,861 INFO L125 PetriNetUnfolderBase]: For 415264/415264 co-relation queries the response was YES. [2024-06-28 03:46:02,882 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13789 conditions, 1989 events. 1033/1989 cut-off events. For 415264/415264 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 12656 event pairs, 207 based on Foata normal form. 8/1997 useless extension candidates. Maximal degree in co-relation 13593. Up to 1355 conditions per place. [2024-06-28 03:46:02,886 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 227 selfloop transitions, 126 changer transitions 9/364 dead transitions. [2024-06-28 03:46:02,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 364 transitions, 4768 flow [2024-06-28 03:46:02,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:46:02,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:46:02,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 03:46:02,887 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-28 03:46:02,887 INFO L175 Difference]: Start difference. First operand has 469 places, 339 transitions, 3600 flow. Second operand 12 states and 134 transitions. [2024-06-28 03:46:02,887 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 364 transitions, 4768 flow [2024-06-28 03:46:04,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 364 transitions, 4422 flow, removed 33 selfloop flow, removed 11 redundant places. [2024-06-28 03:46:04,844 INFO L231 Difference]: Finished difference. Result has 470 places, 336 transitions, 3491 flow [2024-06-28 03:46:04,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3254, PETRI_DIFFERENCE_MINUEND_PLACES=458, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3491, PETRI_PLACES=470, PETRI_TRANSITIONS=336} [2024-06-28 03:46:04,845 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 440 predicate places. [2024-06-28 03:46:04,845 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 336 transitions, 3491 flow [2024-06-28 03:46:04,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:04,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:04,845 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:04,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable215 [2024-06-28 03:46:04,845 INFO L420 AbstractCegarLoop]: === Iteration 217 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:04,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:04,846 INFO L85 PathProgramCache]: Analyzing trace with hash 987947287, now seen corresponding path program 38 times [2024-06-28 03:46:04,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:04,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680944033] [2024-06-28 03:46:04,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:04,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:05,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:05,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:05,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680944033] [2024-06-28 03:46:05,911 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680944033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:05,911 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:05,912 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:46:05,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279293299] [2024-06-28 03:46:05,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:05,912 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:46:05,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:05,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:46:05,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:46:06,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:46:06,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 336 transitions, 3491 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:06,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:06,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:46:06,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:06,767 INFO L124 PetriNetUnfolderBase]: 1018/1956 cut-off events. [2024-06-28 03:46:06,767 INFO L125 PetriNetUnfolderBase]: For 369672/369672 co-relation queries the response was YES. [2024-06-28 03:46:06,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13659 conditions, 1956 events. 1018/1956 cut-off events. For 369672/369672 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 12398 event pairs, 227 based on Foata normal form. 2/1958 useless extension candidates. Maximal degree in co-relation 13463. Up to 1333 conditions per place. [2024-06-28 03:46:06,790 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 220 selfloop transitions, 132 changer transitions 0/354 dead transitions. [2024-06-28 03:46:06,790 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 354 transitions, 4313 flow [2024-06-28 03:46:06,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:06,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:06,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:46:06,791 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 03:46:06,791 INFO L175 Difference]: Start difference. First operand has 470 places, 336 transitions, 3491 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:46:06,791 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 354 transitions, 4313 flow [2024-06-28 03:46:08,676 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 465 places, 354 transitions, 4057 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:46:08,679 INFO L231 Difference]: Finished difference. Result has 466 places, 337 transitions, 3575 flow [2024-06-28 03:46:08,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3235, PETRI_DIFFERENCE_MINUEND_PLACES=455, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=131, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3575, PETRI_PLACES=466, PETRI_TRANSITIONS=337} [2024-06-28 03:46:08,680 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 436 predicate places. [2024-06-28 03:46:08,680 INFO L495 AbstractCegarLoop]: Abstraction has has 466 places, 337 transitions, 3575 flow [2024-06-28 03:46:08,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:08,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:08,680 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:08,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable216 [2024-06-28 03:46:08,681 INFO L420 AbstractCegarLoop]: === Iteration 218 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:08,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:08,681 INFO L85 PathProgramCache]: Analyzing trace with hash 426665751, now seen corresponding path program 39 times [2024-06-28 03:46:08,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:08,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097859352] [2024-06-28 03:46:08,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:08,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:08,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:09,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:09,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:09,861 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097859352] [2024-06-28 03:46:09,861 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097859352] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:09,861 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:09,861 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:46:09,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257608788] [2024-06-28 03:46:09,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:09,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:46:09,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:09,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:46:09,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:46:09,966 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:46:09,966 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 466 places, 337 transitions, 3575 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:09,967 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:09,967 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:46:09,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:10,619 INFO L124 PetriNetUnfolderBase]: 1015/1951 cut-off events. [2024-06-28 03:46:10,619 INFO L125 PetriNetUnfolderBase]: For 343598/343598 co-relation queries the response was YES. [2024-06-28 03:46:10,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13251 conditions, 1951 events. 1015/1951 cut-off events. For 343598/343598 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 12373 event pairs, 210 based on Foata normal form. 2/1953 useless extension candidates. Maximal degree in co-relation 13057. Up to 1328 conditions per place. [2024-06-28 03:46:10,651 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 211 selfloop transitions, 141 changer transitions 0/354 dead transitions. [2024-06-28 03:46:10,651 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 476 places, 354 transitions, 4395 flow [2024-06-28 03:46:10,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:10,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:10,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-28 03:46:10,652 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3548387096774194 [2024-06-28 03:46:10,652 INFO L175 Difference]: Start difference. First operand has 466 places, 337 transitions, 3575 flow. Second operand 11 states and 121 transitions. [2024-06-28 03:46:10,652 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 476 places, 354 transitions, 4395 flow [2024-06-28 03:46:12,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 467 places, 354 transitions, 4065 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-28 03:46:12,393 INFO L231 Difference]: Finished difference. Result has 468 places, 338 transitions, 3605 flow [2024-06-28 03:46:12,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3245, PETRI_DIFFERENCE_MINUEND_PLACES=457, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3605, PETRI_PLACES=468, PETRI_TRANSITIONS=338} [2024-06-28 03:46:12,393 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 438 predicate places. [2024-06-28 03:46:12,394 INFO L495 AbstractCegarLoop]: Abstraction has has 468 places, 338 transitions, 3605 flow [2024-06-28 03:46:12,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:12,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:12,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:12,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable217 [2024-06-28 03:46:12,394 INFO L420 AbstractCegarLoop]: === Iteration 219 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:12,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:12,395 INFO L85 PathProgramCache]: Analyzing trace with hash 156486053, now seen corresponding path program 40 times [2024-06-28 03:46:12,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:12,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025201230] [2024-06-28 03:46:12,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:12,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:12,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:13,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:13,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:13,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025201230] [2024-06-28 03:46:13,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025201230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:13,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:13,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:46:13,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037851108] [2024-06-28 03:46:13,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:13,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:46:13,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:13,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:46:13,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:46:13,616 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:46:13,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 468 places, 338 transitions, 3605 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:13,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:13,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:46:13,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:14,287 INFO L124 PetriNetUnfolderBase]: 1019/1959 cut-off events. [2024-06-28 03:46:14,287 INFO L125 PetriNetUnfolderBase]: For 348355/348355 co-relation queries the response was YES. [2024-06-28 03:46:14,310 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13350 conditions, 1959 events. 1019/1959 cut-off events. For 348355/348355 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 12447 event pairs, 258 based on Foata normal form. 2/1961 useless extension candidates. Maximal degree in co-relation 13155. Up to 1336 conditions per place. [2024-06-28 03:46:14,315 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 237 selfloop transitions, 117 changer transitions 0/356 dead transitions. [2024-06-28 03:46:14,315 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 478 places, 356 transitions, 4435 flow [2024-06-28 03:46:14,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:14,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:14,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 03:46:14,316 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-28 03:46:14,316 INFO L175 Difference]: Start difference. First operand has 468 places, 338 transitions, 3605 flow. Second operand 11 states and 130 transitions. [2024-06-28 03:46:14,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 478 places, 356 transitions, 4435 flow [2024-06-28 03:46:16,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 469 places, 356 transitions, 4085 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-28 03:46:16,094 INFO L231 Difference]: Finished difference. Result has 470 places, 339 transitions, 3569 flow [2024-06-28 03:46:16,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3255, PETRI_DIFFERENCE_MINUEND_PLACES=459, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=338, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3569, PETRI_PLACES=470, PETRI_TRANSITIONS=339} [2024-06-28 03:46:16,095 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 440 predicate places. [2024-06-28 03:46:16,095 INFO L495 AbstractCegarLoop]: Abstraction has has 470 places, 339 transitions, 3569 flow [2024-06-28 03:46:16,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:16,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:16,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:16,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable218 [2024-06-28 03:46:16,095 INFO L420 AbstractCegarLoop]: === Iteration 220 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:16,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:16,096 INFO L85 PathProgramCache]: Analyzing trace with hash 2127384403, now seen corresponding path program 41 times [2024-06-28 03:46:16,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:16,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888615008] [2024-06-28 03:46:16,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:16,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:16,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:17,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:17,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:17,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888615008] [2024-06-28 03:46:17,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888615008] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:17,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:17,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:46:17,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641455099] [2024-06-28 03:46:17,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:17,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:46:17,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:17,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:46:17,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:46:17,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:46:17,301 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 470 places, 339 transitions, 3569 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:17,301 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:17,301 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:46:17,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:17,912 INFO L124 PetriNetUnfolderBase]: 1023/1967 cut-off events. [2024-06-28 03:46:17,912 INFO L125 PetriNetUnfolderBase]: For 353628/353628 co-relation queries the response was YES. [2024-06-28 03:46:17,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13349 conditions, 1967 events. 1023/1967 cut-off events. For 353628/353628 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 12475 event pairs, 250 based on Foata normal form. 2/1969 useless extension candidates. Maximal degree in co-relation 13153. Up to 1426 conditions per place. [2024-06-28 03:46:17,940 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 251 selfloop transitions, 104 changer transitions 0/357 dead transitions. [2024-06-28 03:46:17,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 357 transitions, 4403 flow [2024-06-28 03:46:17,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:17,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:17,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 03:46:17,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 03:46:17,941 INFO L175 Difference]: Start difference. First operand has 470 places, 339 transitions, 3569 flow. Second operand 11 states and 125 transitions. [2024-06-28 03:46:17,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 480 places, 357 transitions, 4403 flow [2024-06-28 03:46:19,773 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 357 transitions, 4099 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-28 03:46:19,776 INFO L231 Difference]: Finished difference. Result has 472 places, 340 transitions, 3555 flow [2024-06-28 03:46:19,776 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3265, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=339, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3555, PETRI_PLACES=472, PETRI_TRANSITIONS=340} [2024-06-28 03:46:19,777 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 442 predicate places. [2024-06-28 03:46:19,777 INFO L495 AbstractCegarLoop]: Abstraction has has 472 places, 340 transitions, 3555 flow [2024-06-28 03:46:19,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:19,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:19,777 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:19,777 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable219 [2024-06-28 03:46:19,777 INFO L420 AbstractCegarLoop]: === Iteration 221 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:19,778 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:19,778 INFO L85 PathProgramCache]: Analyzing trace with hash 931274579, now seen corresponding path program 42 times [2024-06-28 03:46:19,778 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:19,778 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195580446] [2024-06-28 03:46:19,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:19,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:19,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:20,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:20,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:20,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195580446] [2024-06-28 03:46:20,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195580446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:20,860 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:20,860 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:46:20,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307313811] [2024-06-28 03:46:20,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:20,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:46:20,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:20,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:46:20,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:46:20,975 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:46:20,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 472 places, 340 transitions, 3555 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:20,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:20,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:46:20,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:21,670 INFO L124 PetriNetUnfolderBase]: 1027/1975 cut-off events. [2024-06-28 03:46:21,670 INFO L125 PetriNetUnfolderBase]: For 358672/358672 co-relation queries the response was YES. [2024-06-28 03:46:21,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13388 conditions, 1975 events. 1027/1975 cut-off events. For 358672/358672 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 12561 event pairs, 258 based on Foata normal form. 2/1977 useless extension candidates. Maximal degree in co-relation 13191. Up to 1352 conditions per place. [2024-06-28 03:46:21,698 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 226 selfloop transitions, 130 changer transitions 0/358 dead transitions. [2024-06-28 03:46:21,698 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 482 places, 358 transitions, 4393 flow [2024-06-28 03:46:21,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:21,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:21,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 03:46:21,698 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 03:46:21,699 INFO L175 Difference]: Start difference. First operand has 472 places, 340 transitions, 3555 flow. Second operand 11 states and 127 transitions. [2024-06-28 03:46:21,699 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 482 places, 358 transitions, 4393 flow [2024-06-28 03:46:23,638 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 474 places, 358 transitions, 4119 flow, removed 37 selfloop flow, removed 8 redundant places. [2024-06-28 03:46:23,641 INFO L231 Difference]: Finished difference. Result has 475 places, 341 transitions, 3625 flow [2024-06-28 03:46:23,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3281, PETRI_DIFFERENCE_MINUEND_PLACES=464, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=129, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3625, PETRI_PLACES=475, PETRI_TRANSITIONS=341} [2024-06-28 03:46:23,641 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 445 predicate places. [2024-06-28 03:46:23,642 INFO L495 AbstractCegarLoop]: Abstraction has has 475 places, 341 transitions, 3625 flow [2024-06-28 03:46:23,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:23,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:23,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:23,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable220 [2024-06-28 03:46:23,642 INFO L420 AbstractCegarLoop]: === Iteration 222 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:23,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:23,643 INFO L85 PathProgramCache]: Analyzing trace with hash -247961663, now seen corresponding path program 43 times [2024-06-28 03:46:23,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:23,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735876353] [2024-06-28 03:46:23,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:23,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:23,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:24,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:24,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:24,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735876353] [2024-06-28 03:46:24,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735876353] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:24,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:24,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:46:24,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263262704] [2024-06-28 03:46:24,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:24,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:46:24,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:24,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:46:24,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:46:24,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:46:24,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 475 places, 341 transitions, 3625 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:24,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:24,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:46:24,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:25,453 INFO L124 PetriNetUnfolderBase]: 1067/2055 cut-off events. [2024-06-28 03:46:25,453 INFO L125 PetriNetUnfolderBase]: For 489142/489142 co-relation queries the response was YES. [2024-06-28 03:46:25,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15727 conditions, 2055 events. 1067/2055 cut-off events. For 489142/489142 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 13130 event pairs, 272 based on Foata normal form. 2/2057 useless extension candidates. Maximal degree in co-relation 15529. Up to 1344 conditions per place. [2024-06-28 03:46:25,485 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 244 selfloop transitions, 119 changer transitions 0/365 dead transitions. [2024-06-28 03:46:25,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 365 transitions, 4887 flow [2024-06-28 03:46:25,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:25,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:25,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-28 03:46:25,486 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39296187683284456 [2024-06-28 03:46:25,486 INFO L175 Difference]: Start difference. First operand has 475 places, 341 transitions, 3625 flow. Second operand 11 states and 134 transitions. [2024-06-28 03:46:25,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 365 transitions, 4887 flow [2024-06-28 03:46:27,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 365 transitions, 4553 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-28 03:46:27,799 INFO L231 Difference]: Finished difference. Result has 477 places, 343 transitions, 3695 flow [2024-06-28 03:46:27,799 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3291, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=341, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=118, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3695, PETRI_PLACES=477, PETRI_TRANSITIONS=343} [2024-06-28 03:46:27,799 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 447 predicate places. [2024-06-28 03:46:27,800 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 343 transitions, 3695 flow [2024-06-28 03:46:27,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:27,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:27,800 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:27,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable221 [2024-06-28 03:46:27,800 INFO L420 AbstractCegarLoop]: === Iteration 223 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:27,800 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:27,800 INFO L85 PathProgramCache]: Analyzing trace with hash 1928077033, now seen corresponding path program 44 times [2024-06-28 03:46:27,800 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:27,800 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976284534] [2024-06-28 03:46:27,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:27,801 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:27,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:28,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:28,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:28,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976284534] [2024-06-28 03:46:28,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976284534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:28,857 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:28,857 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:46:28,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538485541] [2024-06-28 03:46:28,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:28,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:46:28,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:28,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:46:28,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:46:28,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:46:28,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 343 transitions, 3695 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:28,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:28,983 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:46:28,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:29,656 INFO L124 PetriNetUnfolderBase]: 1071/2063 cut-off events. [2024-06-28 03:46:29,656 INFO L125 PetriNetUnfolderBase]: For 492957/492957 co-relation queries the response was YES. [2024-06-28 03:46:29,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15784 conditions, 2063 events. 1071/2063 cut-off events. For 492957/492957 co-relation queries the response was YES. Maximal size of possible extension queue 195. Compared 13197 event pairs, 276 based on Foata normal form. 2/2065 useless extension candidates. Maximal degree in co-relation 15585. Up to 1426 conditions per place. [2024-06-28 03:46:29,688 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 241 selfloop transitions, 118 changer transitions 0/361 dead transitions. [2024-06-28 03:46:29,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 361 transitions, 4541 flow [2024-06-28 03:46:29,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:29,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:29,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 03:46:29,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 03:46:29,689 INFO L175 Difference]: Start difference. First operand has 477 places, 343 transitions, 3695 flow. Second operand 11 states and 131 transitions. [2024-06-28 03:46:29,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 361 transitions, 4541 flow [2024-06-28 03:46:32,128 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 361 transitions, 4238 flow, removed 52 selfloop flow, removed 10 redundant places. [2024-06-28 03:46:32,131 INFO L231 Difference]: Finished difference. Result has 478 places, 344 transitions, 3716 flow [2024-06-28 03:46:32,132 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3398, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=117, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3716, PETRI_PLACES=478, PETRI_TRANSITIONS=344} [2024-06-28 03:46:32,132 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 448 predicate places. [2024-06-28 03:46:32,132 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 344 transitions, 3716 flow [2024-06-28 03:46:32,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:32,132 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:32,132 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:32,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable222 [2024-06-28 03:46:32,132 INFO L420 AbstractCegarLoop]: === Iteration 224 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:32,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:32,132 INFO L85 PathProgramCache]: Analyzing trace with hash -193321677, now seen corresponding path program 45 times [2024-06-28 03:46:32,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:32,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999432391] [2024-06-28 03:46:32,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:32,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:32,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:33,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:33,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:33,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999432391] [2024-06-28 03:46:33,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999432391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:33,214 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:33,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:46:33,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1409326009] [2024-06-28 03:46:33,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:33,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:46:33,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:33,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:46:33,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:46:33,358 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:46:33,359 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 344 transitions, 3716 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:33,359 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:33,359 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:46:33,359 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:33,956 INFO L124 PetriNetUnfolderBase]: 1111/2143 cut-off events. [2024-06-28 03:46:33,957 INFO L125 PetriNetUnfolderBase]: For 629084/629084 co-relation queries the response was YES. [2024-06-28 03:46:33,984 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18094 conditions, 2143 events. 1111/2143 cut-off events. For 629084/629084 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 13764 event pairs, 244 based on Foata normal form. 2/2145 useless extension candidates. Maximal degree in co-relation 17896. Up to 1426 conditions per place. [2024-06-28 03:46:33,989 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 221 selfloop transitions, 144 changer transitions 0/367 dead transitions. [2024-06-28 03:46:33,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 367 transitions, 4978 flow [2024-06-28 03:46:33,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:33,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:33,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 03:46:33,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 03:46:33,990 INFO L175 Difference]: Start difference. First operand has 478 places, 344 transitions, 3716 flow. Second operand 11 states and 127 transitions. [2024-06-28 03:46:33,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 367 transitions, 4978 flow [2024-06-28 03:46:36,538 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 367 transitions, 4670 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-28 03:46:36,542 INFO L231 Difference]: Finished difference. Result has 480 places, 346 transitions, 3858 flow [2024-06-28 03:46:36,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3408, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=201, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3858, PETRI_PLACES=480, PETRI_TRANSITIONS=346} [2024-06-28 03:46:36,543 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 450 predicate places. [2024-06-28 03:46:36,543 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 346 transitions, 3858 flow [2024-06-28 03:46:36,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:36,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:36,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:36,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable223 [2024-06-28 03:46:36,543 INFO L420 AbstractCegarLoop]: === Iteration 225 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:36,544 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:36,544 INFO L85 PathProgramCache]: Analyzing trace with hash -1444071487, now seen corresponding path program 46 times [2024-06-28 03:46:36,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:36,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503532149] [2024-06-28 03:46:36,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:36,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:36,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:37,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:37,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:37,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503532149] [2024-06-28 03:46:37,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503532149] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:37,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:37,600 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:46:37,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90795661] [2024-06-28 03:46:37,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:37,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:46:37,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:37,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:46:37,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:46:37,726 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:46:37,726 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 346 transitions, 3858 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:37,726 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:37,726 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:46:37,726 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:38,520 INFO L124 PetriNetUnfolderBase]: 1115/2151 cut-off events. [2024-06-28 03:46:38,520 INFO L125 PetriNetUnfolderBase]: For 637584/637584 co-relation queries the response was YES. [2024-06-28 03:46:38,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18269 conditions, 2151 events. 1115/2151 cut-off events. For 637584/637584 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 13847 event pairs, 296 based on Foata normal form. 2/2153 useless extension candidates. Maximal degree in co-relation 18070. Up to 1514 conditions per place. [2024-06-28 03:46:38,554 INFO L140 encePairwiseOnDemand]: 18/31 looper letters, 227 selfloop transitions, 135 changer transitions 0/364 dead transitions. [2024-06-28 03:46:38,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 364 transitions, 4708 flow [2024-06-28 03:46:38,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:46:38,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:46:38,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 03:46:38,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-28 03:46:38,556 INFO L175 Difference]: Start difference. First operand has 480 places, 346 transitions, 3858 flow. Second operand 12 states and 137 transitions. [2024-06-28 03:46:38,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 364 transitions, 4708 flow [2024-06-28 03:46:41,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 364 transitions, 4434 flow, removed 43 selfloop flow, removed 7 redundant places. [2024-06-28 03:46:41,269 INFO L231 Difference]: Finished difference. Result has 485 places, 347 transitions, 3940 flow [2024-06-28 03:46:41,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3584, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=346, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=134, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3940, PETRI_PLACES=485, PETRI_TRANSITIONS=347} [2024-06-28 03:46:41,269 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 455 predicate places. [2024-06-28 03:46:41,269 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 347 transitions, 3940 flow [2024-06-28 03:46:41,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:41,269 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:41,269 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:41,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable224 [2024-06-28 03:46:41,270 INFO L420 AbstractCegarLoop]: === Iteration 226 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:41,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:41,270 INFO L85 PathProgramCache]: Analyzing trace with hash 683368071, now seen corresponding path program 47 times [2024-06-28 03:46:41,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:41,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186297574] [2024-06-28 03:46:41,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:41,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:41,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:42,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:42,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:42,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186297574] [2024-06-28 03:46:42,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186297574] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:42,370 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:42,370 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:46:42,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147288846] [2024-06-28 03:46:42,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:42,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:46:42,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:42,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:46:42,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:46:42,477 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:46:42,477 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 347 transitions, 3940 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:42,477 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:42,477 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:46:42,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:43,174 INFO L124 PetriNetUnfolderBase]: 1099/2123 cut-off events. [2024-06-28 03:46:43,174 INFO L125 PetriNetUnfolderBase]: For 620915/620915 co-relation queries the response was YES. [2024-06-28 03:46:43,198 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16398 conditions, 2123 events. 1099/2123 cut-off events. For 620915/620915 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 13681 event pairs, 469 based on Foata normal form. 12/2135 useless extension candidates. Maximal degree in co-relation 16197. Up to 2024 conditions per place. [2024-06-28 03:46:43,203 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 334 selfloop transitions, 19 changer transitions 8/363 dead transitions. [2024-06-28 03:46:43,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 495 places, 363 transitions, 4730 flow [2024-06-28 03:46:43,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:43,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:43,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-28 03:46:43,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 03:46:43,204 INFO L175 Difference]: Start difference. First operand has 485 places, 347 transitions, 3940 flow. Second operand 11 states and 110 transitions. [2024-06-28 03:46:43,204 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 495 places, 363 transitions, 4730 flow [2024-06-28 03:46:45,508 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 485 places, 363 transitions, 4328 flow, removed 67 selfloop flow, removed 10 redundant places. [2024-06-28 03:46:45,511 INFO L231 Difference]: Finished difference. Result has 486 places, 343 transitions, 3550 flow [2024-06-28 03:46:45,511 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3538, PETRI_DIFFERENCE_MINUEND_PLACES=475, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3550, PETRI_PLACES=486, PETRI_TRANSITIONS=343} [2024-06-28 03:46:45,511 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 456 predicate places. [2024-06-28 03:46:45,511 INFO L495 AbstractCegarLoop]: Abstraction has has 486 places, 343 transitions, 3550 flow [2024-06-28 03:46:45,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:45,512 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:45,512 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:45,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable225 [2024-06-28 03:46:45,512 INFO L420 AbstractCegarLoop]: === Iteration 227 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:45,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:45,512 INFO L85 PathProgramCache]: Analyzing trace with hash 156336323, now seen corresponding path program 48 times [2024-06-28 03:46:45,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:45,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565570489] [2024-06-28 03:46:45,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:45,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:45,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:46,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:46,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:46,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565570489] [2024-06-28 03:46:46,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565570489] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:46,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:46,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:46:46,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481686513] [2024-06-28 03:46:46,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:46,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:46:46,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:46,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:46:46,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:46:46,859 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:46:46,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 343 transitions, 3550 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:46,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:46,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:46:46,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:47,501 INFO L124 PetriNetUnfolderBase]: 1077/2081 cut-off events. [2024-06-28 03:46:47,501 INFO L125 PetriNetUnfolderBase]: For 515464/515464 co-relation queries the response was YES. [2024-06-28 03:46:47,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15889 conditions, 2081 events. 1077/2081 cut-off events. For 515464/515464 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 13385 event pairs, 282 based on Foata normal form. 2/2083 useless extension candidates. Maximal degree in co-relation 15687. Up to 1336 conditions per place. [2024-06-28 03:46:47,534 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 244 selfloop transitions, 120 changer transitions 0/366 dead transitions. [2024-06-28 03:46:47,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 366 transitions, 4744 flow [2024-06-28 03:46:47,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:46:47,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:46:47,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-28 03:46:47,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39589442815249265 [2024-06-28 03:46:47,535 INFO L175 Difference]: Start difference. First operand has 486 places, 343 transitions, 3550 flow. Second operand 11 states and 135 transitions. [2024-06-28 03:46:47,535 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 366 transitions, 4744 flow [2024-06-28 03:46:49,824 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 366 transitions, 4684 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 03:46:49,828 INFO L231 Difference]: Finished difference. Result has 485 places, 344 transitions, 3818 flow [2024-06-28 03:46:49,829 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3490, PETRI_DIFFERENCE_MINUEND_PLACES=474, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=119, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3818, PETRI_PLACES=485, PETRI_TRANSITIONS=344} [2024-06-28 03:46:49,829 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 455 predicate places. [2024-06-28 03:46:49,829 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 344 transitions, 3818 flow [2024-06-28 03:46:49,829 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:49,829 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:49,830 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:49,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable226 [2024-06-28 03:46:49,830 INFO L420 AbstractCegarLoop]: === Iteration 228 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:49,830 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:49,831 INFO L85 PathProgramCache]: Analyzing trace with hash 162058179, now seen corresponding path program 9 times [2024-06-28 03:46:49,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:49,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217189068] [2024-06-28 03:46:49,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:49,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:51,166 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:51,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:51,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217189068] [2024-06-28 03:46:51,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217189068] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:51,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:51,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:46:51,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648931165] [2024-06-28 03:46:51,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:51,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:46:51,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:51,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:46:51,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:46:51,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:46:51,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 344 transitions, 3818 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:51,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:51,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:46:51,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:51,894 INFO L124 PetriNetUnfolderBase]: 1099/2127 cut-off events. [2024-06-28 03:46:51,895 INFO L125 PetriNetUnfolderBase]: For 612998/612998 co-relation queries the response was YES. [2024-06-28 03:46:51,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16343 conditions, 2127 events. 1099/2127 cut-off events. For 612998/612998 co-relation queries the response was YES. Maximal size of possible extension queue 198. Compared 13718 event pairs, 294 based on Foata normal form. 10/2137 useless extension candidates. Maximal degree in co-relation 16141. Up to 1536 conditions per place. [2024-06-28 03:46:51,927 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 256 selfloop transitions, 102 changer transitions 9/369 dead transitions. [2024-06-28 03:46:51,927 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 496 places, 369 transitions, 4666 flow [2024-06-28 03:46:51,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:46:51,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:46:51,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 03:46:51,928 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-28 03:46:51,928 INFO L175 Difference]: Start difference. First operand has 485 places, 344 transitions, 3818 flow. Second operand 12 states and 139 transitions. [2024-06-28 03:46:51,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 496 places, 369 transitions, 4666 flow [2024-06-28 03:46:54,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 369 transitions, 4344 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-28 03:46:54,529 INFO L231 Difference]: Finished difference. Result has 489 places, 343 transitions, 3704 flow [2024-06-28 03:46:54,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3500, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=344, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=242, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3704, PETRI_PLACES=489, PETRI_TRANSITIONS=343} [2024-06-28 03:46:54,530 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 459 predicate places. [2024-06-28 03:46:54,530 INFO L495 AbstractCegarLoop]: Abstraction has has 489 places, 343 transitions, 3704 flow [2024-06-28 03:46:54,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:54,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:54,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:54,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable227 [2024-06-28 03:46:54,530 INFO L420 AbstractCegarLoop]: === Iteration 229 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:54,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:54,531 INFO L85 PathProgramCache]: Analyzing trace with hash -854057887, now seen corresponding path program 10 times [2024-06-28 03:46:54,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:54,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071104424] [2024-06-28 03:46:54,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:54,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:54,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:46:55,488 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:46:55,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:46:55,488 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071104424] [2024-06-28 03:46:55,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071104424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:46:55,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:46:55,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:46:55,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872089877] [2024-06-28 03:46:55,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:46:55,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:46:55,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:46:55,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:46:55,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:46:55,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:46:55,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 489 places, 343 transitions, 3704 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:55,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:46:55,583 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:46:55,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:46:56,231 INFO L124 PetriNetUnfolderBase]: 1114/2164 cut-off events. [2024-06-28 03:46:56,231 INFO L125 PetriNetUnfolderBase]: For 703312/703312 co-relation queries the response was YES. [2024-06-28 03:46:56,258 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17813 conditions, 2164 events. 1114/2164 cut-off events. For 703312/703312 co-relation queries the response was YES. Maximal size of possible extension queue 196. Compared 14036 event pairs, 484 based on Foata normal form. 8/2172 useless extension candidates. Maximal degree in co-relation 17609. Up to 1986 conditions per place. [2024-06-28 03:46:56,264 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 338 selfloop transitions, 16 changer transitions 10/366 dead transitions. [2024-06-28 03:46:56,264 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 499 places, 366 transitions, 4844 flow [2024-06-28 03:46:56,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:46:56,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:46:56,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-28 03:46:56,266 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-28 03:46:56,266 INFO L175 Difference]: Start difference. First operand has 489 places, 343 transitions, 3704 flow. Second operand 12 states and 123 transitions. [2024-06-28 03:46:56,266 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 499 places, 366 transitions, 4844 flow [2024-06-28 03:46:59,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 487 places, 366 transitions, 4630 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:46:59,249 INFO L231 Difference]: Finished difference. Result has 488 places, 340 transitions, 3509 flow [2024-06-28 03:46:59,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3492, PETRI_DIFFERENCE_MINUEND_PLACES=476, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3509, PETRI_PLACES=488, PETRI_TRANSITIONS=340} [2024-06-28 03:46:59,250 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 458 predicate places. [2024-06-28 03:46:59,250 INFO L495 AbstractCegarLoop]: Abstraction has has 488 places, 340 transitions, 3509 flow [2024-06-28 03:46:59,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:46:59,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:46:59,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:46:59,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable228 [2024-06-28 03:46:59,250 INFO L420 AbstractCegarLoop]: === Iteration 230 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:46:59,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:46:59,250 INFO L85 PathProgramCache]: Analyzing trace with hash -854375017, now seen corresponding path program 11 times [2024-06-28 03:46:59,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:46:59,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1682765695] [2024-06-28 03:46:59,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:46:59,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:46:59,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:00,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:00,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:00,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1682765695] [2024-06-28 03:47:00,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1682765695] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:00,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:00,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:00,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660929574] [2024-06-28 03:47:00,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:00,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:00,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:00,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:00,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:00,350 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:47:00,350 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 488 places, 340 transitions, 3509 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:00,350 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:00,350 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:47:00,350 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:00,970 INFO L124 PetriNetUnfolderBase]: 1090/2120 cut-off events. [2024-06-28 03:47:00,970 INFO L125 PetriNetUnfolderBase]: For 660027/660027 co-relation queries the response was YES. [2024-06-28 03:47:00,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16814 conditions, 2120 events. 1090/2120 cut-off events. For 660027/660027 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 13711 event pairs, 476 based on Foata normal form. 8/2128 useless extension candidates. Maximal degree in co-relation 16611. Up to 1986 conditions per place. [2024-06-28 03:47:01,005 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 332 selfloop transitions, 13 changer transitions 12/359 dead transitions. [2024-06-28 03:47:01,006 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 359 transitions, 4599 flow [2024-06-28 03:47:01,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:47:01,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:47:01,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-28 03:47:01,006 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255131964809384 [2024-06-28 03:47:01,007 INFO L175 Difference]: Start difference. First operand has 488 places, 340 transitions, 3509 flow. Second operand 11 states and 111 transitions. [2024-06-28 03:47:01,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 359 transitions, 4599 flow [2024-06-28 03:47:03,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 483 places, 359 transitions, 4558 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 03:47:03,529 INFO L231 Difference]: Finished difference. Result has 484 places, 333 transitions, 3446 flow [2024-06-28 03:47:03,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3474, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3446, PETRI_PLACES=484, PETRI_TRANSITIONS=333} [2024-06-28 03:47:03,530 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 454 predicate places. [2024-06-28 03:47:03,530 INFO L495 AbstractCegarLoop]: Abstraction has has 484 places, 333 transitions, 3446 flow [2024-06-28 03:47:03,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:03,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:03,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:03,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable229 [2024-06-28 03:47:03,531 INFO L420 AbstractCegarLoop]: === Iteration 231 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:03,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:03,531 INFO L85 PathProgramCache]: Analyzing trace with hash -783654853, now seen corresponding path program 49 times [2024-06-28 03:47:03,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:03,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549413256] [2024-06-28 03:47:03,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:03,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:03,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:04,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:04,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:04,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549413256] [2024-06-28 03:47:04,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549413256] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:04,584 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:04,584 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:47:04,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112634004] [2024-06-28 03:47:04,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:04,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:47:04,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:04,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:47:04,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:47:04,712 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:47:04,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 484 places, 333 transitions, 3446 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:04,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:04,713 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:47:04,713 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:05,336 INFO L124 PetriNetUnfolderBase]: 1067/2071 cut-off events. [2024-06-28 03:47:05,336 INFO L125 PetriNetUnfolderBase]: For 582100/582100 co-relation queries the response was YES. [2024-06-28 03:47:05,362 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16662 conditions, 2071 events. 1067/2071 cut-off events. For 582100/582100 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 13265 event pairs, 259 based on Foata normal form. 2/2073 useless extension candidates. Maximal degree in co-relation 16461. Up to 1455 conditions per place. [2024-06-28 03:47:05,367 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 224 selfloop transitions, 125 changer transitions 0/351 dead transitions. [2024-06-28 03:47:05,367 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 351 transitions, 4274 flow [2024-06-28 03:47:05,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:47:05,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:47:05,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:47:05,368 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 03:47:05,368 INFO L175 Difference]: Start difference. First operand has 484 places, 333 transitions, 3446 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:47:05,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 351 transitions, 4274 flow [2024-06-28 03:47:08,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 351 transitions, 4243 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:47:08,103 INFO L231 Difference]: Finished difference. Result has 478 places, 334 transitions, 3755 flow [2024-06-28 03:47:08,103 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3415, PETRI_DIFFERENCE_MINUEND_PLACES=467, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3755, PETRI_PLACES=478, PETRI_TRANSITIONS=334} [2024-06-28 03:47:08,104 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 448 predicate places. [2024-06-28 03:47:08,104 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 334 transitions, 3755 flow [2024-06-28 03:47:08,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:08,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:08,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:08,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable230 [2024-06-28 03:47:08,104 INFO L420 AbstractCegarLoop]: === Iteration 232 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:08,104 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:08,104 INFO L85 PathProgramCache]: Analyzing trace with hash 1326170735, now seen corresponding path program 50 times [2024-06-28 03:47:08,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:08,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779866326] [2024-06-28 03:47:08,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:08,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:09,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:09,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:09,127 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779866326] [2024-06-28 03:47:09,127 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779866326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:09,127 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:09,127 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:47:09,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810565479] [2024-06-28 03:47:09,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:09,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:47:09,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:09,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:47:09,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:47:09,240 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:47:09,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 334 transitions, 3755 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:09,241 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:09,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:47:09,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:09,912 INFO L124 PetriNetUnfolderBase]: 1107/2151 cut-off events. [2024-06-28 03:47:09,912 INFO L125 PetriNetUnfolderBase]: For 701668/701668 co-relation queries the response was YES. [2024-06-28 03:47:09,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19276 conditions, 2151 events. 1107/2151 cut-off events. For 701668/701668 co-relation queries the response was YES. Maximal size of possible extension queue 192. Compared 13883 event pairs, 271 based on Foata normal form. 2/2153 useless extension candidates. Maximal degree in co-relation 19077. Up to 1395 conditions per place. [2024-06-28 03:47:09,943 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 225 selfloop transitions, 131 changer transitions 0/358 dead transitions. [2024-06-28 03:47:09,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 358 transitions, 5019 flow [2024-06-28 03:47:09,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:47:09,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:47:09,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 130 transitions. [2024-06-28 03:47:09,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3812316715542522 [2024-06-28 03:47:09,944 INFO L175 Difference]: Start difference. First operand has 478 places, 334 transitions, 3755 flow. Second operand 11 states and 130 transitions. [2024-06-28 03:47:09,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 358 transitions, 5019 flow [2024-06-28 03:47:12,659 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 358 transitions, 4689 flow, removed 41 selfloop flow, removed 9 redundant places. [2024-06-28 03:47:12,663 INFO L231 Difference]: Finished difference. Result has 480 places, 336 transitions, 3865 flow [2024-06-28 03:47:12,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3425, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3865, PETRI_PLACES=480, PETRI_TRANSITIONS=336} [2024-06-28 03:47:12,663 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 450 predicate places. [2024-06-28 03:47:12,663 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 336 transitions, 3865 flow [2024-06-28 03:47:12,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:12,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:12,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:12,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable231 [2024-06-28 03:47:12,664 INFO L420 AbstractCegarLoop]: === Iteration 233 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:12,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:12,664 INFO L85 PathProgramCache]: Analyzing trace with hash 993519413, now seen corresponding path program 12 times [2024-06-28 03:47:12,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:12,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361601133] [2024-06-28 03:47:12,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:12,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:13,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:13,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:13,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361601133] [2024-06-28 03:47:13,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [361601133] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:13,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:13,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:47:13,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338733839] [2024-06-28 03:47:13,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:13,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:47:13,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:13,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:47:13,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:47:14,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:47:14,084 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 336 transitions, 3865 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:14,084 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:14,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:47:14,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:14,806 INFO L124 PetriNetUnfolderBase]: 1123/2187 cut-off events. [2024-06-28 03:47:14,806 INFO L125 PetriNetUnfolderBase]: For 795860/795860 co-relation queries the response was YES. [2024-06-28 03:47:14,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19351 conditions, 2187 events. 1123/2187 cut-off events. For 795860/795860 co-relation queries the response was YES. Maximal size of possible extension queue 193. Compared 14176 event pairs, 291 based on Foata normal form. 10/2197 useless extension candidates. Maximal degree in co-relation 19151. Up to 1596 conditions per place. [2024-06-28 03:47:14,837 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 235 selfloop transitions, 112 changer transitions 9/358 dead transitions. [2024-06-28 03:47:14,837 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 358 transitions, 4667 flow [2024-06-28 03:47:14,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:47:14,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:47:14,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-28 03:47:14,838 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3575268817204301 [2024-06-28 03:47:14,838 INFO L175 Difference]: Start difference. First operand has 480 places, 336 transitions, 3865 flow. Second operand 12 states and 133 transitions. [2024-06-28 03:47:14,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 358 transitions, 4667 flow [2024-06-28 03:47:17,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 484 places, 358 transitions, 4412 flow, removed 48 selfloop flow, removed 7 redundant places. [2024-06-28 03:47:17,993 INFO L231 Difference]: Finished difference. Result has 485 places, 333 transitions, 3805 flow [2024-06-28 03:47:17,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3610, PETRI_DIFFERENCE_MINUEND_PLACES=473, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=336, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3805, PETRI_PLACES=485, PETRI_TRANSITIONS=333} [2024-06-28 03:47:17,993 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 455 predicate places. [2024-06-28 03:47:17,993 INFO L495 AbstractCegarLoop]: Abstraction has has 485 places, 333 transitions, 3805 flow [2024-06-28 03:47:17,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:17,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:17,994 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:17,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable232 [2024-06-28 03:47:17,994 INFO L420 AbstractCegarLoop]: === Iteration 234 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:17,994 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:17,994 INFO L85 PathProgramCache]: Analyzing trace with hash 460776471, now seen corresponding path program 51 times [2024-06-28 03:47:17,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:17,995 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655475692] [2024-06-28 03:47:17,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:17,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:18,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:19,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:19,076 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:19,076 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655475692] [2024-06-28 03:47:19,076 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655475692] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:19,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:19,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:47:19,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724130099] [2024-06-28 03:47:19,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:19,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:47:19,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:19,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:47:19,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:47:19,184 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:47:19,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 485 places, 333 transitions, 3805 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:19,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:19,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:47:19,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:19,807 INFO L124 PetriNetUnfolderBase]: 1081/2109 cut-off events. [2024-06-28 03:47:19,807 INFO L125 PetriNetUnfolderBase]: For 693409/693409 co-relation queries the response was YES. [2024-06-28 03:47:19,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17208 conditions, 2109 events. 1081/2109 cut-off events. For 693409/693409 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 13640 event pairs, 299 based on Foata normal form. 12/2121 useless extension candidates. Maximal degree in co-relation 17006. Up to 1473 conditions per place. [2024-06-28 03:47:19,838 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 238 selfloop transitions, 107 changer transitions 7/354 dead transitions. [2024-06-28 03:47:19,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 354 transitions, 4597 flow [2024-06-28 03:47:19,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:47:19,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:47:19,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-28 03:47:19,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3841642228739003 [2024-06-28 03:47:19,839 INFO L175 Difference]: Start difference. First operand has 485 places, 333 transitions, 3805 flow. Second operand 11 states and 131 transitions. [2024-06-28 03:47:19,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 354 transitions, 4597 flow [2024-06-28 03:47:22,437 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 354 transitions, 4295 flow, removed 29 selfloop flow, removed 15 redundant places. [2024-06-28 03:47:22,440 INFO L231 Difference]: Finished difference. Result has 480 places, 330 transitions, 3696 flow [2024-06-28 03:47:22,440 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3503, PETRI_DIFFERENCE_MINUEND_PLACES=469, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=107, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3696, PETRI_PLACES=480, PETRI_TRANSITIONS=330} [2024-06-28 03:47:22,441 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 450 predicate places. [2024-06-28 03:47:22,441 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 330 transitions, 3696 flow [2024-06-28 03:47:22,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:22,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:22,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:22,441 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable233 [2024-06-28 03:47:22,442 INFO L420 AbstractCegarLoop]: === Iteration 235 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:22,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:22,442 INFO L85 PathProgramCache]: Analyzing trace with hash 1194600727, now seen corresponding path program 52 times [2024-06-28 03:47:22,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:22,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434373288] [2024-06-28 03:47:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:22,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:22,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:23,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:23,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:23,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434373288] [2024-06-28 03:47:23,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434373288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:23,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:23,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:47:23,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023997238] [2024-06-28 03:47:23,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:23,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:47:23,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:23,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:47:23,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:47:23,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:47:23,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 330 transitions, 3696 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:23,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:23,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:47:23,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:24,108 INFO L124 PetriNetUnfolderBase]: 1048/2046 cut-off events. [2024-06-28 03:47:24,108 INFO L125 PetriNetUnfolderBase]: For 586293/586293 co-relation queries the response was YES. [2024-06-28 03:47:24,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15453 conditions, 2046 events. 1048/2046 cut-off events. For 586293/586293 co-relation queries the response was YES. Maximal size of possible extension queue 188. Compared 13197 event pairs, 250 based on Foata normal form. 12/2058 useless extension candidates. Maximal degree in co-relation 15254. Up to 1416 conditions per place. [2024-06-28 03:47:24,139 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 230 selfloop transitions, 113 changer transitions 7/352 dead transitions. [2024-06-28 03:47:24,139 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 352 transitions, 4562 flow [2024-06-28 03:47:24,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:47:24,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:47:24,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-28 03:47:24,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375366568914956 [2024-06-28 03:47:24,140 INFO L175 Difference]: Start difference. First operand has 480 places, 330 transitions, 3696 flow. Second operand 11 states and 128 transitions. [2024-06-28 03:47:24,140 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 352 transitions, 4562 flow [2024-06-28 03:47:26,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 352 transitions, 4318 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:47:26,610 INFO L231 Difference]: Finished difference. Result has 479 places, 328 transitions, 3739 flow [2024-06-28 03:47:26,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3452, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3739, PETRI_PLACES=479, PETRI_TRANSITIONS=328} [2024-06-28 03:47:26,610 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 449 predicate places. [2024-06-28 03:47:26,611 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 328 transitions, 3739 flow [2024-06-28 03:47:26,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:26,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:26,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:26,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable234 [2024-06-28 03:47:26,611 INFO L420 AbstractCegarLoop]: === Iteration 236 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:26,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:26,612 INFO L85 PathProgramCache]: Analyzing trace with hash 931124849, now seen corresponding path program 53 times [2024-06-28 03:47:26,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:26,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [592897881] [2024-06-28 03:47:26,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:26,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:26,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:27,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:27,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:27,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [592897881] [2024-06-28 03:47:27,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [592897881] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:27,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:27,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:47:27,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315915664] [2024-06-28 03:47:27,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:27,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:47:27,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:27,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:47:27,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:47:27,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:47:27,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 328 transitions, 3739 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:27,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:27,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:47:27,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:28,461 INFO L124 PetriNetUnfolderBase]: 1028/2006 cut-off events. [2024-06-28 03:47:28,461 INFO L125 PetriNetUnfolderBase]: For 484648/484648 co-relation queries the response was YES. [2024-06-28 03:47:28,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15468 conditions, 2006 events. 1028/2006 cut-off events. For 484648/484648 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 12917 event pairs, 280 based on Foata normal form. 2/2008 useless extension candidates. Maximal degree in co-relation 15268. Up to 1388 conditions per place. [2024-06-28 03:47:28,491 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 230 selfloop transitions, 114 changer transitions 0/346 dead transitions. [2024-06-28 03:47:28,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 346 transitions, 4557 flow [2024-06-28 03:47:28,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:47:28,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:47:28,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-28 03:47:28,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3724340175953079 [2024-06-28 03:47:28,492 INFO L175 Difference]: Start difference. First operand has 479 places, 328 transitions, 3739 flow. Second operand 11 states and 127 transitions. [2024-06-28 03:47:28,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 346 transitions, 4557 flow [2024-06-28 03:47:30,772 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 346 transitions, 4190 flow, removed 37 selfloop flow, removed 11 redundant places. [2024-06-28 03:47:30,775 INFO L231 Difference]: Finished difference. Result has 479 places, 329 transitions, 3692 flow [2024-06-28 03:47:30,775 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3372, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3692, PETRI_PLACES=479, PETRI_TRANSITIONS=329} [2024-06-28 03:47:30,775 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 449 predicate places. [2024-06-28 03:47:30,775 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 329 transitions, 3692 flow [2024-06-28 03:47:30,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:30,775 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:30,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:30,776 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable235 [2024-06-28 03:47:30,776 INFO L420 AbstractCegarLoop]: === Iteration 237 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:30,776 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:30,776 INFO L85 PathProgramCache]: Analyzing trace with hash 927549929, now seen corresponding path program 54 times [2024-06-28 03:47:30,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:30,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150103754] [2024-06-28 03:47:30,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:30,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:30,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:31,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:31,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:31,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150103754] [2024-06-28 03:47:31,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150103754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:31,736 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:31,736 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:47:31,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292371095] [2024-06-28 03:47:31,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:31,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:47:31,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:31,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:47:31,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:47:31,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:47:31,854 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 329 transitions, 3692 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:31,854 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:31,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:47:31,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:32,393 INFO L124 PetriNetUnfolderBase]: 1025/2001 cut-off events. [2024-06-28 03:47:32,393 INFO L125 PetriNetUnfolderBase]: For 465697/465697 co-relation queries the response was YES. [2024-06-28 03:47:32,417 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14868 conditions, 2001 events. 1025/2001 cut-off events. For 465697/465697 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 12875 event pairs, 279 based on Foata normal form. 2/2003 useless extension candidates. Maximal degree in co-relation 14668. Up to 1186 conditions per place. [2024-06-28 03:47:32,423 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 215 selfloop transitions, 130 changer transitions 0/347 dead transitions. [2024-06-28 03:47:32,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 347 transitions, 4728 flow [2024-06-28 03:47:32,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:47:32,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:47:32,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-28 03:47:32,424 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36950146627565983 [2024-06-28 03:47:32,424 INFO L175 Difference]: Start difference. First operand has 479 places, 329 transitions, 3692 flow. Second operand 11 states and 126 transitions. [2024-06-28 03:47:32,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 347 transitions, 4728 flow [2024-06-28 03:47:35,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 480 places, 347 transitions, 4418 flow, removed 42 selfloop flow, removed 9 redundant places. [2024-06-28 03:47:35,115 INFO L231 Difference]: Finished difference. Result has 481 places, 329 transitions, 3646 flow [2024-06-28 03:47:35,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3382, PETRI_DIFFERENCE_MINUEND_PLACES=470, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3646, PETRI_PLACES=481, PETRI_TRANSITIONS=329} [2024-06-28 03:47:35,116 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 451 predicate places. [2024-06-28 03:47:35,116 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 329 transitions, 3646 flow [2024-06-28 03:47:35,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:35,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:35,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:35,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable236 [2024-06-28 03:47:35,116 INFO L420 AbstractCegarLoop]: === Iteration 238 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:35,116 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:35,117 INFO L85 PathProgramCache]: Analyzing trace with hash 2127594149, now seen corresponding path program 13 times [2024-06-28 03:47:35,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:35,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398041930] [2024-06-28 03:47:35,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:35,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:35,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:36,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:36,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:36,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398041930] [2024-06-28 03:47:36,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398041930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:36,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:36,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:47:36,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797577755] [2024-06-28 03:47:36,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:36,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:47:36,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:36,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:47:36,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:47:36,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:47:36,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 329 transitions, 3646 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:36,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:36,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:47:36,543 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:37,129 INFO L124 PetriNetUnfolderBase]: 1047/2047 cut-off events. [2024-06-28 03:47:37,129 INFO L125 PetriNetUnfolderBase]: For 561032/561032 co-relation queries the response was YES. [2024-06-28 03:47:37,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15011 conditions, 2047 events. 1047/2047 cut-off events. For 561032/561032 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 13228 event pairs, 281 based on Foata normal form. 10/2057 useless extension candidates. Maximal degree in co-relation 14810. Up to 1456 conditions per place. [2024-06-28 03:47:37,160 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 244 selfloop transitions, 99 changer transitions 9/354 dead transitions. [2024-06-28 03:47:37,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 492 places, 354 transitions, 4466 flow [2024-06-28 03:47:37,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:47:37,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:47:37,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-28 03:47:37,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3682795698924731 [2024-06-28 03:47:37,161 INFO L175 Difference]: Start difference. First operand has 481 places, 329 transitions, 3646 flow. Second operand 12 states and 137 transitions. [2024-06-28 03:47:37,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 492 places, 354 transitions, 4466 flow [2024-06-28 03:47:39,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 354 transitions, 3878 flow, removed 43 selfloop flow, removed 13 redundant places. [2024-06-28 03:47:39,616 INFO L231 Difference]: Finished difference. Result has 481 places, 328 transitions, 3266 flow [2024-06-28 03:47:39,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3066, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=99, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3266, PETRI_PLACES=481, PETRI_TRANSITIONS=328} [2024-06-28 03:47:39,617 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 451 predicate places. [2024-06-28 03:47:39,617 INFO L495 AbstractCegarLoop]: Abstraction has has 481 places, 328 transitions, 3266 flow [2024-06-28 03:47:39,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:39,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:39,617 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:39,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable237 [2024-06-28 03:47:39,617 INFO L420 AbstractCegarLoop]: === Iteration 239 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:39,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:39,617 INFO L85 PathProgramCache]: Analyzing trace with hash 2134743989, now seen corresponding path program 14 times [2024-06-28 03:47:39,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:39,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640340057] [2024-06-28 03:47:39,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:39,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:40,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:40,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:40,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640340057] [2024-06-28 03:47:40,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640340057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:40,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:40,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:47:40,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323914232] [2024-06-28 03:47:40,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:40,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:47:40,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:40,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:47:40,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:47:41,011 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:47:41,011 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 481 places, 328 transitions, 3266 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:41,012 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:41,012 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:47:41,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:41,734 INFO L124 PetriNetUnfolderBase]: 1043/2043 cut-off events. [2024-06-28 03:47:41,734 INFO L125 PetriNetUnfolderBase]: For 564123/564123 co-relation queries the response was YES. [2024-06-28 03:47:41,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14193 conditions, 2043 events. 1043/2043 cut-off events. For 564123/564123 co-relation queries the response was YES. Maximal size of possible extension queue 189. Compared 13207 event pairs, 287 based on Foata normal form. 10/2053 useless extension candidates. Maximal degree in co-relation 13994. Up to 1419 conditions per place. [2024-06-28 03:47:41,762 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 238 selfloop transitions, 104 changer transitions 9/353 dead transitions. [2024-06-28 03:47:41,763 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 353 transitions, 4080 flow [2024-06-28 03:47:41,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:47:41,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:47:41,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-28 03:47:41,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3736559139784946 [2024-06-28 03:47:41,763 INFO L175 Difference]: Start difference. First operand has 481 places, 328 transitions, 3266 flow. Second operand 12 states and 139 transitions. [2024-06-28 03:47:41,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 353 transitions, 4080 flow [2024-06-28 03:47:44,356 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 353 transitions, 3870 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 03:47:44,359 INFO L231 Difference]: Finished difference. Result has 480 places, 327 transitions, 3266 flow [2024-06-28 03:47:44,359 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3060, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=104, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3266, PETRI_PLACES=480, PETRI_TRANSITIONS=327} [2024-06-28 03:47:44,360 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 450 predicate places. [2024-06-28 03:47:44,360 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 327 transitions, 3266 flow [2024-06-28 03:47:44,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:44,360 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:44,360 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:44,360 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable238 [2024-06-28 03:47:44,360 INFO L420 AbstractCegarLoop]: === Iteration 240 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:44,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:44,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1075374855, now seen corresponding path program 15 times [2024-06-28 03:47:44,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:44,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90188496] [2024-06-28 03:47:44,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:44,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:44,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:45,664 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:45,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:45,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90188496] [2024-06-28 03:47:45,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90188496] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:45,665 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:45,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:47:45,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398339799] [2024-06-28 03:47:45,665 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:45,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:47:45,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:45,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:47:45,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:47:45,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:47:45,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 327 transitions, 3266 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:45,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:45,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:47:45,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:46,468 INFO L124 PetriNetUnfolderBase]: 1033/2029 cut-off events. [2024-06-28 03:47:46,468 INFO L125 PetriNetUnfolderBase]: For 564077/564077 co-relation queries the response was YES. [2024-06-28 03:47:46,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14132 conditions, 2029 events. 1033/2029 cut-off events. For 564077/564077 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 13140 event pairs, 289 based on Foata normal form. 10/2039 useless extension candidates. Maximal degree in co-relation 13934. Up to 1438 conditions per place. [2024-06-28 03:47:46,493 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 236 selfloop transitions, 102 changer transitions 9/349 dead transitions. [2024-06-28 03:47:46,494 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 490 places, 349 transitions, 4050 flow [2024-06-28 03:47:46,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:47:46,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:47:46,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-28 03:47:46,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3602150537634409 [2024-06-28 03:47:46,495 INFO L175 Difference]: Start difference. First operand has 480 places, 327 transitions, 3266 flow. Second operand 12 states and 134 transitions. [2024-06-28 03:47:46,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 490 places, 349 transitions, 4050 flow [2024-06-28 03:47:49,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 479 places, 349 transitions, 3838 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-28 03:47:49,198 INFO L231 Difference]: Finished difference. Result has 480 places, 324 transitions, 3242 flow [2024-06-28 03:47:49,198 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3054, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=327, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=102, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3242, PETRI_PLACES=480, PETRI_TRANSITIONS=324} [2024-06-28 03:47:49,198 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 450 predicate places. [2024-06-28 03:47:49,198 INFO L495 AbstractCegarLoop]: Abstraction has has 480 places, 324 transitions, 3242 flow [2024-06-28 03:47:49,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:49,199 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:49,199 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:49,199 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable239 [2024-06-28 03:47:49,199 INFO L420 AbstractCegarLoop]: === Iteration 241 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:49,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:49,199 INFO L85 PathProgramCache]: Analyzing trace with hash 2145604103, now seen corresponding path program 55 times [2024-06-28 03:47:49,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:49,200 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659006631] [2024-06-28 03:47:49,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:49,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:49,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:50,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:50,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:50,264 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659006631] [2024-06-28 03:47:50,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659006631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:50,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:50,264 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:47:50,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1258417850] [2024-06-28 03:47:50,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:50,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:47:50,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:50,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:47:50,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:47:50,383 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:47:50,383 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 324 transitions, 3242 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:50,383 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:50,384 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:47:50,384 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:51,054 INFO L124 PetriNetUnfolderBase]: 1011/1987 cut-off events. [2024-06-28 03:47:51,054 INFO L125 PetriNetUnfolderBase]: For 476146/476146 co-relation queries the response was YES. [2024-06-28 03:47:51,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14092 conditions, 1987 events. 1011/1987 cut-off events. For 476146/476146 co-relation queries the response was YES. Maximal size of possible extension queue 185. Compared 12839 event pairs, 251 based on Foata normal form. 2/1989 useless extension candidates. Maximal degree in co-relation 13894. Up to 1421 conditions per place. [2024-06-28 03:47:51,085 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 229 selfloop transitions, 111 changer transitions 0/342 dead transitions. [2024-06-28 03:47:51,085 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 489 places, 342 transitions, 4049 flow [2024-06-28 03:47:51,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:47:51,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:47:51,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-28 03:47:51,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-28 03:47:51,086 INFO L175 Difference]: Start difference. First operand has 480 places, 324 transitions, 3242 flow. Second operand 11 states and 124 transitions. [2024-06-28 03:47:51,086 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 489 places, 342 transitions, 4049 flow [2024-06-28 03:47:53,763 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 476 places, 342 transitions, 3837 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-06-28 03:47:53,766 INFO L231 Difference]: Finished difference. Result has 477 places, 325 transitions, 3337 flow [2024-06-28 03:47:53,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3030, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=324, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=213, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3337, PETRI_PLACES=477, PETRI_TRANSITIONS=325} [2024-06-28 03:47:53,766 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 447 predicate places. [2024-06-28 03:47:53,766 INFO L495 AbstractCegarLoop]: Abstraction has has 477 places, 325 transitions, 3337 flow [2024-06-28 03:47:53,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:53,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:53,766 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:53,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable240 [2024-06-28 03:47:53,767 INFO L420 AbstractCegarLoop]: === Iteration 242 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:53,767 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:53,767 INFO L85 PathProgramCache]: Analyzing trace with hash -2142003607, now seen corresponding path program 16 times [2024-06-28 03:47:53,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:53,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1031670211] [2024-06-28 03:47:53,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:53,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:53,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:54,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:54,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:54,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1031670211] [2024-06-28 03:47:54,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1031670211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:54,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:54,840 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:47:54,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056779679] [2024-06-28 03:47:54,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:54,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:47:54,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:54,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:47:54,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:47:54,960 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:47:54,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 477 places, 325 transitions, 3337 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:54,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:54,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:47:54,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:47:55,531 INFO L124 PetriNetUnfolderBase]: 1027/2023 cut-off events. [2024-06-28 03:47:55,531 INFO L125 PetriNetUnfolderBase]: For 567253/567253 co-relation queries the response was YES. [2024-06-28 03:47:55,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14261 conditions, 2023 events. 1027/2023 cut-off events. For 567253/567253 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 13105 event pairs, 261 based on Foata normal form. 10/2033 useless extension candidates. Maximal degree in co-relation 14064. Up to 1415 conditions per place. [2024-06-28 03:47:55,560 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 228 selfloop transitions, 105 changer transitions 11/346 dead transitions. [2024-06-28 03:47:55,560 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 487 places, 346 transitions, 4113 flow [2024-06-28 03:47:55,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:47:55,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:47:55,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-28 03:47:55,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36656891495601174 [2024-06-28 03:47:55,561 INFO L175 Difference]: Start difference. First operand has 477 places, 325 transitions, 3337 flow. Second operand 11 states and 125 transitions. [2024-06-28 03:47:55,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 487 places, 346 transitions, 4113 flow [2024-06-28 03:47:58,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 478 places, 346 transitions, 3817 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-28 03:47:58,125 INFO L231 Difference]: Finished difference. Result has 479 places, 319 transitions, 3219 flow [2024-06-28 03:47:58,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3041, PETRI_DIFFERENCE_MINUEND_PLACES=468, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=325, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=105, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3219, PETRI_PLACES=479, PETRI_TRANSITIONS=319} [2024-06-28 03:47:58,126 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 449 predicate places. [2024-06-28 03:47:58,126 INFO L495 AbstractCegarLoop]: Abstraction has has 479 places, 319 transitions, 3219 flow [2024-06-28 03:47:58,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:58,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:47:58,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:47:58,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable241 [2024-06-28 03:47:58,126 INFO L420 AbstractCegarLoop]: === Iteration 243 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:47:58,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:47:58,126 INFO L85 PathProgramCache]: Analyzing trace with hash 461053177, now seen corresponding path program 17 times [2024-06-28 03:47:58,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:47:58,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605755255] [2024-06-28 03:47:58,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:47:58,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:47:58,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:47:59,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:47:59,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:47:59,331 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605755255] [2024-06-28 03:47:59,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605755255] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:47:59,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:47:59,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:47:59,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135799502] [2024-06-28 03:47:59,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:47:59,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:47:59,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:47:59,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:47:59,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:47:59,438 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:47:59,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 479 places, 319 transitions, 3219 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:47:59,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:47:59,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:47:59,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:00,069 INFO L124 PetriNetUnfolderBase]: 1018/2020 cut-off events. [2024-06-28 03:48:00,069 INFO L125 PetriNetUnfolderBase]: For 615526/615526 co-relation queries the response was YES. [2024-06-28 03:48:00,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15002 conditions, 2020 events. 1018/2020 cut-off events. For 615526/615526 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 13173 event pairs, 298 based on Foata normal form. 8/2028 useless extension candidates. Maximal degree in co-relation 14804. Up to 1371 conditions per place. [2024-06-28 03:48:00,099 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 238 selfloop transitions, 94 changer transitions 9/343 dead transitions. [2024-06-28 03:48:00,099 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 488 places, 343 transitions, 4301 flow [2024-06-28 03:48:00,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:48:00,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:48:00,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-28 03:48:00,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3629032258064516 [2024-06-28 03:48:00,100 INFO L175 Difference]: Start difference. First operand has 479 places, 319 transitions, 3219 flow. Second operand 12 states and 135 transitions. [2024-06-28 03:48:00,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 488 places, 343 transitions, 4301 flow [2024-06-28 03:48:02,880 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 477 places, 343 transitions, 4085 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-28 03:48:02,883 INFO L231 Difference]: Finished difference. Result has 478 places, 316 transitions, 3178 flow [2024-06-28 03:48:02,883 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=3005, PETRI_DIFFERENCE_MINUEND_PLACES=466, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=319, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=94, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=225, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3178, PETRI_PLACES=478, PETRI_TRANSITIONS=316} [2024-06-28 03:48:02,884 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 448 predicate places. [2024-06-28 03:48:02,884 INFO L495 AbstractCegarLoop]: Abstraction has has 478 places, 316 transitions, 3178 flow [2024-06-28 03:48:02,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:02,884 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:02,884 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:02,884 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable242 [2024-06-28 03:48:02,884 INFO L420 AbstractCegarLoop]: === Iteration 244 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:02,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:02,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1444217619, now seen corresponding path program 56 times [2024-06-28 03:48:02,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:02,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180639936] [2024-06-28 03:48:02,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:02,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:02,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:03,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:03,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:03,946 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180639936] [2024-06-28 03:48:03,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180639936] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:03,946 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:03,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:48:03,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398356895] [2024-06-28 03:48:03,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:03,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:48:03,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:03,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:48:03,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:48:04,058 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:48:04,058 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 478 places, 316 transitions, 3178 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:04,058 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:04,058 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:48:04,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:04,591 INFO L124 PetriNetUnfolderBase]: 996/1974 cut-off events. [2024-06-28 03:48:04,591 INFO L125 PetriNetUnfolderBase]: For 526836/526836 co-relation queries the response was YES. [2024-06-28 03:48:04,615 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14418 conditions, 1974 events. 996/1974 cut-off events. For 526836/526836 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 12762 event pairs, 269 based on Foata normal form. 2/1976 useless extension candidates. Maximal degree in co-relation 14220. Up to 1407 conditions per place. [2024-06-28 03:48:04,620 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 225 selfloop transitions, 106 changer transitions 0/333 dead transitions. [2024-06-28 03:48:04,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 484 places, 333 transitions, 3886 flow [2024-06-28 03:48:04,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:48:04,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:48:04,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-28 03:48:04,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36070381231671556 [2024-06-28 03:48:04,621 INFO L175 Difference]: Start difference. First operand has 478 places, 316 transitions, 3178 flow. Second operand 11 states and 123 transitions. [2024-06-28 03:48:04,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 484 places, 333 transitions, 3886 flow [2024-06-28 03:48:07,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 473 places, 333 transitions, 3632 flow, removed 35 selfloop flow, removed 11 redundant places. [2024-06-28 03:48:07,330 INFO L231 Difference]: Finished difference. Result has 474 places, 316 transitions, 3140 flow [2024-06-28 03:48:07,330 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2924, PETRI_DIFFERENCE_MINUEND_PLACES=463, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3140, PETRI_PLACES=474, PETRI_TRANSITIONS=316} [2024-06-28 03:48:07,330 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 444 predicate places. [2024-06-28 03:48:07,330 INFO L495 AbstractCegarLoop]: Abstraction has has 474 places, 316 transitions, 3140 flow [2024-06-28 03:48:07,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:07,330 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:07,330 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:07,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable243 [2024-06-28 03:48:07,331 INFO L420 AbstractCegarLoop]: === Iteration 245 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:07,331 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:07,331 INFO L85 PathProgramCache]: Analyzing trace with hash -2141734837, now seen corresponding path program 18 times [2024-06-28 03:48:07,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:07,331 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987863263] [2024-06-28 03:48:07,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:07,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:08,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:08,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:08,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987863263] [2024-06-28 03:48:08,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987863263] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:08,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:08,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:48:08,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35856458] [2024-06-28 03:48:08,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:08,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:48:08,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:08,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:48:08,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:48:08,637 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:48:08,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 474 places, 316 transitions, 3140 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:08,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:08,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:48:08,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:09,247 INFO L124 PetriNetUnfolderBase]: 1009/2009 cut-off events. [2024-06-28 03:48:09,247 INFO L125 PetriNetUnfolderBase]: For 599466/599466 co-relation queries the response was YES. [2024-06-28 03:48:09,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14608 conditions, 2009 events. 1009/2009 cut-off events. For 599466/599466 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 13070 event pairs, 274 based on Foata normal form. 8/2017 useless extension candidates. Maximal degree in co-relation 14412. Up to 1370 conditions per place. [2024-06-28 03:48:09,276 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 227 selfloop transitions, 101 changer transitions 9/339 dead transitions. [2024-06-28 03:48:09,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 485 places, 339 transitions, 4206 flow [2024-06-28 03:48:09,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:48:09,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:48:09,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 131 transitions. [2024-06-28 03:48:09,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3521505376344086 [2024-06-28 03:48:09,277 INFO L175 Difference]: Start difference. First operand has 474 places, 316 transitions, 3140 flow. Second operand 12 states and 131 transitions. [2024-06-28 03:48:09,277 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 485 places, 339 transitions, 4206 flow [2024-06-28 03:48:12,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 472 places, 339 transitions, 3744 flow, removed 19 selfloop flow, removed 13 redundant places. [2024-06-28 03:48:12,022 INFO L231 Difference]: Finished difference. Result has 473 places, 313 transitions, 2879 flow [2024-06-28 03:48:12,022 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2690, PETRI_DIFFERENCE_MINUEND_PLACES=461, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=316, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=101, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=215, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2879, PETRI_PLACES=473, PETRI_TRANSITIONS=313} [2024-06-28 03:48:12,022 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 443 predicate places. [2024-06-28 03:48:12,022 INFO L495 AbstractCegarLoop]: Abstraction has has 473 places, 313 transitions, 2879 flow [2024-06-28 03:48:12,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:12,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:12,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:12,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable244 [2024-06-28 03:48:12,022 INFO L420 AbstractCegarLoop]: === Iteration 246 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:12,023 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:12,023 INFO L85 PathProgramCache]: Analyzing trace with hash 700557998, now seen corresponding path program 1 times [2024-06-28 03:48:12,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:12,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962616992] [2024-06-28 03:48:12,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:12,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:13,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:13,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:13,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962616992] [2024-06-28 03:48:13,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1962616992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:13,215 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:13,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:48:13,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083354035] [2024-06-28 03:48:13,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:13,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:48:13,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:13,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:48:13,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:48:13,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:48:13,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 313 transitions, 2879 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:13,352 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:13,352 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:48:13,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:14,018 INFO L124 PetriNetUnfolderBase]: 998/1988 cut-off events. [2024-06-28 03:48:14,018 INFO L125 PetriNetUnfolderBase]: For 540520/540520 co-relation queries the response was YES. [2024-06-28 03:48:14,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13852 conditions, 1988 events. 998/1988 cut-off events. For 540520/540520 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 12885 event pairs, 337 based on Foata normal form. 6/1994 useless extension candidates. Maximal degree in co-relation 13657. Up to 1863 conditions per place. [2024-06-28 03:48:14,041 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 295 selfloop transitions, 21 changer transitions 21/339 dead transitions. [2024-06-28 03:48:14,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 481 places, 339 transitions, 3619 flow [2024-06-28 03:48:14,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:48:14,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:48:14,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 130 transitions. [2024-06-28 03:48:14,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 03:48:14,042 INFO L175 Difference]: Start difference. First operand has 473 places, 313 transitions, 2879 flow. Second operand 13 states and 130 transitions. [2024-06-28 03:48:14,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 481 places, 339 transitions, 3619 flow [2024-06-28 03:48:16,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 339 transitions, 3402 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-28 03:48:16,489 INFO L231 Difference]: Finished difference. Result has 469 places, 307 transitions, 2658 flow [2024-06-28 03:48:16,489 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2662, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=313, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=292, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2658, PETRI_PLACES=469, PETRI_TRANSITIONS=307} [2024-06-28 03:48:16,489 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 439 predicate places. [2024-06-28 03:48:16,489 INFO L495 AbstractCegarLoop]: Abstraction has has 469 places, 307 transitions, 2658 flow [2024-06-28 03:48:16,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:16,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:16,489 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:16,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable245 [2024-06-28 03:48:16,489 INFO L420 AbstractCegarLoop]: === Iteration 247 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:16,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:16,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1319256788, now seen corresponding path program 2 times [2024-06-28 03:48:16,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:16,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967247668] [2024-06-28 03:48:16,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:16,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:16,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:17,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:17,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:17,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967247668] [2024-06-28 03:48:17,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967247668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:17,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:17,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:48:17,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96359755] [2024-06-28 03:48:17,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:17,653 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:48:17,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:17,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:48:17,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:48:17,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:48:17,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 469 places, 307 transitions, 2658 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:17,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:17,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:48:17,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:18,401 INFO L124 PetriNetUnfolderBase]: 974/1942 cut-off events. [2024-06-28 03:48:18,401 INFO L125 PetriNetUnfolderBase]: For 526702/526702 co-relation queries the response was YES. [2024-06-28 03:48:18,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13396 conditions, 1942 events. 974/1942 cut-off events. For 526702/526702 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 12498 event pairs, 304 based on Foata normal form. 6/1948 useless extension candidates. Maximal degree in co-relation 13205. Up to 1792 conditions per place. [2024-06-28 03:48:18,427 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 288 selfloop transitions, 20 changer transitions 23/333 dead transitions. [2024-06-28 03:48:18,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 470 places, 333 transitions, 3384 flow [2024-06-28 03:48:18,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:48:18,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:48:18,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 127 transitions. [2024-06-28 03:48:18,428 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315136476426799 [2024-06-28 03:48:18,428 INFO L175 Difference]: Start difference. First operand has 469 places, 307 transitions, 2658 flow. Second operand 13 states and 127 transitions. [2024-06-28 03:48:18,428 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 470 places, 333 transitions, 3384 flow [2024-06-28 03:48:21,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 460 places, 333 transitions, 3334 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:48:21,035 INFO L231 Difference]: Finished difference. Result has 461 places, 300 transitions, 2600 flow [2024-06-28 03:48:21,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2608, PETRI_DIFFERENCE_MINUEND_PLACES=448, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=307, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=287, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2600, PETRI_PLACES=461, PETRI_TRANSITIONS=300} [2024-06-28 03:48:21,036 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 431 predicate places. [2024-06-28 03:48:21,036 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 300 transitions, 2600 flow [2024-06-28 03:48:21,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:21,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:21,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:21,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable246 [2024-06-28 03:48:21,036 INFO L420 AbstractCegarLoop]: === Iteration 248 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:21,037 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:21,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1219183146, now seen corresponding path program 3 times [2024-06-28 03:48:21,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:21,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [443141550] [2024-06-28 03:48:21,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:21,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:22,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:22,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:22,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [443141550] [2024-06-28 03:48:22,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [443141550] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:22,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:22,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:48:22,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417341272] [2024-06-28 03:48:22,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:22,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:48:22,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:22,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:48:22,089 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:48:22,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:48:22,227 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 300 transitions, 2600 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:22,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:22,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:48:22,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:22,738 INFO L124 PetriNetUnfolderBase]: 949/1889 cut-off events. [2024-06-28 03:48:22,739 INFO L125 PetriNetUnfolderBase]: For 519745/519745 co-relation queries the response was YES. [2024-06-28 03:48:22,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13177 conditions, 1889 events. 949/1889 cut-off events. For 519745/519745 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 12121 event pairs, 258 based on Foata normal form. 6/1895 useless extension candidates. Maximal degree in co-relation 12989. Up to 1324 conditions per place. [2024-06-28 03:48:22,765 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 236 selfloop transitions, 56 changer transitions 27/321 dead transitions. [2024-06-28 03:48:22,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 461 places, 321 transitions, 3292 flow [2024-06-28 03:48:22,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:48:22,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:48:22,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-28 03:48:22,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33602150537634407 [2024-06-28 03:48:22,766 INFO L175 Difference]: Start difference. First operand has 461 places, 300 transitions, 2600 flow. Second operand 12 states and 125 transitions. [2024-06-28 03:48:22,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 461 places, 321 transitions, 3292 flow [2024-06-28 03:48:24,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 449 places, 321 transitions, 3235 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:48:24,954 INFO L231 Difference]: Finished difference. Result has 450 places, 283 transitions, 2511 flow [2024-06-28 03:48:24,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2543, PETRI_DIFFERENCE_MINUEND_PLACES=438, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2511, PETRI_PLACES=450, PETRI_TRANSITIONS=283} [2024-06-28 03:48:24,955 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 420 predicate places. [2024-06-28 03:48:24,955 INFO L495 AbstractCegarLoop]: Abstraction has has 450 places, 283 transitions, 2511 flow [2024-06-28 03:48:24,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:24,955 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:24,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:24,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable247 [2024-06-28 03:48:24,955 INFO L420 AbstractCegarLoop]: === Iteration 249 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:24,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:24,955 INFO L85 PathProgramCache]: Analyzing trace with hash -211544290, now seen corresponding path program 4 times [2024-06-28 03:48:24,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:24,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468359003] [2024-06-28 03:48:24,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:24,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:24,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:26,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:26,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:26,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468359003] [2024-06-28 03:48:26,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468359003] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:26,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:26,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:48:26,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [244968291] [2024-06-28 03:48:26,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:26,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:48:26,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:26,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:48:26,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:48:26,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:48:26,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 450 places, 283 transitions, 2511 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:26,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:26,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:48:26,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:27,056 INFO L124 PetriNetUnfolderBase]: 891/1783 cut-off events. [2024-06-28 03:48:27,056 INFO L125 PetriNetUnfolderBase]: For 512252/512252 co-relation queries the response was YES. [2024-06-28 03:48:27,076 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12804 conditions, 1783 events. 891/1783 cut-off events. For 512252/512252 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 11282 event pairs, 266 based on Foata normal form. 6/1789 useless extension candidates. Maximal degree in co-relation 12619. Up to 1644 conditions per place. [2024-06-28 03:48:27,081 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 263 selfloop transitions, 28 changer transitions 14/307 dead transitions. [2024-06-28 03:48:27,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 446 places, 307 transitions, 3189 flow [2024-06-28 03:48:27,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:48:27,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:48:27,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 128 transitions. [2024-06-28 03:48:27,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3176178660049628 [2024-06-28 03:48:27,082 INFO L175 Difference]: Start difference. First operand has 450 places, 283 transitions, 2511 flow. Second operand 13 states and 128 transitions. [2024-06-28 03:48:27,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 446 places, 307 transitions, 3189 flow [2024-06-28 03:48:29,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 433 places, 307 transitions, 3051 flow, removed 13 selfloop flow, removed 13 redundant places. [2024-06-28 03:48:29,079 INFO L231 Difference]: Finished difference. Result has 434 places, 277 transitions, 2357 flow [2024-06-28 03:48:29,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2373, PETRI_DIFFERENCE_MINUEND_PLACES=421, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=255, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2357, PETRI_PLACES=434, PETRI_TRANSITIONS=277} [2024-06-28 03:48:29,079 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 404 predicate places. [2024-06-28 03:48:29,079 INFO L495 AbstractCegarLoop]: Abstraction has has 434 places, 277 transitions, 2357 flow [2024-06-28 03:48:29,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:29,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:29,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:29,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable248 [2024-06-28 03:48:29,080 INFO L420 AbstractCegarLoop]: === Iteration 250 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:29,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:29,080 INFO L85 PathProgramCache]: Analyzing trace with hash -794956958, now seen corresponding path program 5 times [2024-06-28 03:48:29,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:29,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690874831] [2024-06-28 03:48:29,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:29,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:29,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:30,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:30,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:30,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690874831] [2024-06-28 03:48:30,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690874831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:30,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:30,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:48:30,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530339030] [2024-06-28 03:48:30,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:30,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:48:30,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:30,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:48:30,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:48:30,500 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:48:30,500 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 277 transitions, 2357 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:30,500 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:30,500 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:48:30,500 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:31,031 INFO L124 PetriNetUnfolderBase]: 874/1752 cut-off events. [2024-06-28 03:48:31,031 INFO L125 PetriNetUnfolderBase]: For 511991/511991 co-relation queries the response was YES. [2024-06-28 03:48:31,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12502 conditions, 1752 events. 874/1752 cut-off events. For 511991/511991 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 11030 event pairs, 261 based on Foata normal form. 6/1758 useless extension candidates. Maximal degree in co-relation 12322. Up to 1624 conditions per place. [2024-06-28 03:48:31,054 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 259 selfloop transitions, 24 changer transitions 16/301 dead transitions. [2024-06-28 03:48:31,055 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 301 transitions, 3021 flow [2024-06-28 03:48:31,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:48:31,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:48:31,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 127 transitions. [2024-06-28 03:48:31,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.315136476426799 [2024-06-28 03:48:31,055 INFO L175 Difference]: Start difference. First operand has 434 places, 277 transitions, 2357 flow. Second operand 13 states and 127 transitions. [2024-06-28 03:48:31,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 440 places, 301 transitions, 3021 flow [2024-06-28 03:48:32,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 428 places, 301 transitions, 2947 flow, removed 9 selfloop flow, removed 12 redundant places. [2024-06-28 03:48:32,995 INFO L231 Difference]: Finished difference. Result has 429 places, 271 transitions, 2271 flow [2024-06-28 03:48:32,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2283, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2271, PETRI_PLACES=429, PETRI_TRANSITIONS=271} [2024-06-28 03:48:32,995 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 399 predicate places. [2024-06-28 03:48:32,995 INFO L495 AbstractCegarLoop]: Abstraction has has 429 places, 271 transitions, 2271 flow [2024-06-28 03:48:32,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:32,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:32,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:32,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable249 [2024-06-28 03:48:32,996 INFO L420 AbstractCegarLoop]: === Iteration 251 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:32,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:32,996 INFO L85 PathProgramCache]: Analyzing trace with hash -219206772, now seen corresponding path program 6 times [2024-06-28 03:48:32,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:32,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288138033] [2024-06-28 03:48:32,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:32,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:34,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:34,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:34,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288138033] [2024-06-28 03:48:34,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288138033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:34,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:34,261 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:48:34,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224412153] [2024-06-28 03:48:34,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:34,261 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:48:34,261 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:34,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:48:34,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:48:34,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:48:34,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 429 places, 271 transitions, 2271 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:34,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:34,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:48:34,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:34,871 INFO L124 PetriNetUnfolderBase]: 857/1721 cut-off events. [2024-06-28 03:48:34,871 INFO L125 PetriNetUnfolderBase]: For 504735/504735 co-relation queries the response was YES. [2024-06-28 03:48:34,889 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12276 conditions, 1721 events. 857/1721 cut-off events. For 504735/504735 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 10786 event pairs, 246 based on Foata normal form. 6/1727 useless extension candidates. Maximal degree in co-relation 12098. Up to 1596 conditions per place. [2024-06-28 03:48:34,893 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 247 selfloop transitions, 15 changer transitions 31/295 dead transitions. [2024-06-28 03:48:34,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 433 places, 295 transitions, 2921 flow [2024-06-28 03:48:34,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:48:34,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:48:34,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 126 transitions. [2024-06-28 03:48:34,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31265508684863524 [2024-06-28 03:48:34,894 INFO L175 Difference]: Start difference. First operand has 429 places, 271 transitions, 2271 flow. Second operand 13 states and 126 transitions. [2024-06-28 03:48:34,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 433 places, 295 transitions, 2921 flow [2024-06-28 03:48:36,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 423 places, 295 transitions, 2863 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 03:48:36,922 INFO L231 Difference]: Finished difference. Result has 424 places, 257 transitions, 2102 flow [2024-06-28 03:48:36,923 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=2213, PETRI_DIFFERENCE_MINUEND_PLACES=411, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=271, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2102, PETRI_PLACES=424, PETRI_TRANSITIONS=257} [2024-06-28 03:48:36,923 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 394 predicate places. [2024-06-28 03:48:36,923 INFO L495 AbstractCegarLoop]: Abstraction has has 424 places, 257 transitions, 2102 flow [2024-06-28 03:48:36,923 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:36,923 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:36,923 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:36,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable250 [2024-06-28 03:48:36,924 INFO L420 AbstractCegarLoop]: === Iteration 252 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:36,924 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:36,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1985300728, now seen corresponding path program 7 times [2024-06-28 03:48:36,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:36,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1282101386] [2024-06-28 03:48:36,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:36,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:36,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:38,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:38,070 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:38,070 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1282101386] [2024-06-28 03:48:38,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1282101386] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:38,071 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:38,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:48:38,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859710325] [2024-06-28 03:48:38,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:38,071 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:48:38,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:38,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:48:38,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:48:38,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:48:38,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 424 places, 257 transitions, 2102 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:38,176 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:38,176 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:48:38,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:38,613 INFO L124 PetriNetUnfolderBase]: 828/1656 cut-off events. [2024-06-28 03:48:38,613 INFO L125 PetriNetUnfolderBase]: For 497439/497439 co-relation queries the response was YES. [2024-06-28 03:48:38,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11918 conditions, 1656 events. 828/1656 cut-off events. For 497439/497439 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 10302 event pairs, 242 based on Foata normal form. 6/1662 useless extension candidates. Maximal degree in co-relation 11741. Up to 1550 conditions per place. [2024-06-28 03:48:38,635 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 243 selfloop transitions, 13 changer transitions 21/279 dead transitions. [2024-06-28 03:48:38,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 279 transitions, 2712 flow [2024-06-28 03:48:38,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:48:38,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:48:38,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-28 03:48:38,636 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31989247311827956 [2024-06-28 03:48:38,636 INFO L175 Difference]: Start difference. First operand has 424 places, 257 transitions, 2102 flow. Second operand 12 states and 119 transitions. [2024-06-28 03:48:38,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 279 transitions, 2712 flow [2024-06-28 03:48:40,830 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 401 places, 279 transitions, 2589 flow, removed 6 selfloop flow, removed 18 redundant places. [2024-06-28 03:48:40,832 INFO L231 Difference]: Finished difference. Result has 402 places, 251 transitions, 1965 flow [2024-06-28 03:48:40,832 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1979, PETRI_DIFFERENCE_MINUEND_PLACES=390, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=244, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1965, PETRI_PLACES=402, PETRI_TRANSITIONS=251} [2024-06-28 03:48:40,832 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 372 predicate places. [2024-06-28 03:48:40,833 INFO L495 AbstractCegarLoop]: Abstraction has has 402 places, 251 transitions, 1965 flow [2024-06-28 03:48:40,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:40,833 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:40,833 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:40,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable251 [2024-06-28 03:48:40,833 INFO L420 AbstractCegarLoop]: === Iteration 253 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:40,834 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:40,834 INFO L85 PathProgramCache]: Analyzing trace with hash -2072156646, now seen corresponding path program 8 times [2024-06-28 03:48:40,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:40,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080634825] [2024-06-28 03:48:40,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:40,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:40,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:42,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:42,375 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:42,375 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080634825] [2024-06-28 03:48:42,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080634825] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:42,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:42,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:48:42,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218690385] [2024-06-28 03:48:42,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:42,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:48:42,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:42,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:48:42,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:48:42,514 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:48:42,514 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 251 transitions, 1965 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:42,514 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:42,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:48:42,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:43,009 INFO L124 PetriNetUnfolderBase]: 804/1610 cut-off events. [2024-06-28 03:48:43,010 INFO L125 PetriNetUnfolderBase]: For 490274/490274 co-relation queries the response was YES. [2024-06-28 03:48:43,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11566 conditions, 1610 events. 804/1610 cut-off events. For 490274/490274 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 9991 event pairs, 228 based on Foata normal form. 6/1616 useless extension candidates. Maximal degree in co-relation 11397. Up to 1476 conditions per place. [2024-06-28 03:48:43,031 INFO L140 encePairwiseOnDemand]: 19/31 looper letters, 238 selfloop transitions, 24 changer transitions 10/274 dead transitions. [2024-06-28 03:48:43,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 274 transitions, 2573 flow [2024-06-28 03:48:43,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-28 03:48:43,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-28 03:48:43,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 128 transitions. [2024-06-28 03:48:43,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3176178660049628 [2024-06-28 03:48:43,032 INFO L175 Difference]: Start difference. First operand has 402 places, 251 transitions, 1965 flow. Second operand 13 states and 128 transitions. [2024-06-28 03:48:43,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 403 places, 274 transitions, 2573 flow [2024-06-28 03:48:44,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 394 places, 274 transitions, 2539 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:48:44,942 INFO L231 Difference]: Finished difference. Result has 395 places, 247 transitions, 1943 flow [2024-06-28 03:48:44,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1931, PETRI_DIFFERENCE_MINUEND_PLACES=382, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1943, PETRI_PLACES=395, PETRI_TRANSITIONS=247} [2024-06-28 03:48:44,942 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 365 predicate places. [2024-06-28 03:48:44,942 INFO L495 AbstractCegarLoop]: Abstraction has has 395 places, 247 transitions, 1943 flow [2024-06-28 03:48:44,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:44,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:44,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:44,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable252 [2024-06-28 03:48:44,943 INFO L420 AbstractCegarLoop]: === Iteration 254 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:44,943 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:44,943 INFO L85 PathProgramCache]: Analyzing trace with hash 2093034480, now seen corresponding path program 9 times [2024-06-28 03:48:44,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:44,943 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768678904] [2024-06-28 03:48:44,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:44,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:46,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:46,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:46,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768678904] [2024-06-28 03:48:46,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768678904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:46,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:46,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:48:46,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032114078] [2024-06-28 03:48:46,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:46,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:48:46,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:46,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:48:46,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:48:46,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:48:46,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 247 transitions, 1943 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:46,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:46,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:48:46,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:46,802 INFO L124 PetriNetUnfolderBase]: 777/1557 cut-off events. [2024-06-28 03:48:46,803 INFO L125 PetriNetUnfolderBase]: For 425366/425366 co-relation queries the response was YES. [2024-06-28 03:48:46,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10544 conditions, 1557 events. 777/1557 cut-off events. For 425366/425366 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 9596 event pairs, 209 based on Foata normal form. 6/1563 useless extension candidates. Maximal degree in co-relation 10378. Up to 1311 conditions per place. [2024-06-28 03:48:46,822 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 210 selfloop transitions, 27 changer transitions 29/268 dead transitions. [2024-06-28 03:48:46,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 268 transitions, 2535 flow [2024-06-28 03:48:46,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:48:46,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:48:46,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 123 transitions. [2024-06-28 03:48:46,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33064516129032256 [2024-06-28 03:48:46,823 INFO L175 Difference]: Start difference. First operand has 395 places, 247 transitions, 1943 flow. Second operand 12 states and 123 transitions. [2024-06-28 03:48:46,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 402 places, 268 transitions, 2535 flow [2024-06-28 03:48:48,442 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 391 places, 268 transitions, 2481 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:48:48,445 INFO L231 Difference]: Finished difference. Result has 392 places, 226 transitions, 1750 flow [2024-06-28 03:48:48,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1889, PETRI_DIFFERENCE_MINUEND_PLACES=380, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1750, PETRI_PLACES=392, PETRI_TRANSITIONS=226} [2024-06-28 03:48:48,445 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 362 predicate places. [2024-06-28 03:48:48,445 INFO L495 AbstractCegarLoop]: Abstraction has has 392 places, 226 transitions, 1750 flow [2024-06-28 03:48:48,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:48,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:48,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:48,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable253 [2024-06-28 03:48:48,446 INFO L420 AbstractCegarLoop]: === Iteration 255 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:48,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:48,446 INFO L85 PathProgramCache]: Analyzing trace with hash -18391270, now seen corresponding path program 10 times [2024-06-28 03:48:48,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:48,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75431506] [2024-06-28 03:48:48,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:48,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:49,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:49,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:49,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75431506] [2024-06-28 03:48:49,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75431506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:49,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:49,721 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:48:49,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982457321] [2024-06-28 03:48:49,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:49,721 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:48:49,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:49,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:48:49,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:48:49,893 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:48:49,893 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 392 places, 226 transitions, 1750 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:49,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:49,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:48:49,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:50,286 INFO L124 PetriNetUnfolderBase]: 716/1442 cut-off events. [2024-06-28 03:48:50,286 INFO L125 PetriNetUnfolderBase]: For 425392/425392 co-relation queries the response was YES. [2024-06-28 03:48:50,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10037 conditions, 1442 events. 716/1442 cut-off events. For 425392/425392 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 8725 event pairs, 197 based on Foata normal form. 6/1448 useless extension candidates. Maximal degree in co-relation 9871. Up to 1189 conditions per place. [2024-06-28 03:48:50,305 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 199 selfloop transitions, 19 changer transitions 27/247 dead transitions. [2024-06-28 03:48:50,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 247 transitions, 2296 flow [2024-06-28 03:48:50,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:48:50,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:48:50,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 122 transitions. [2024-06-28 03:48:50,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3279569892473118 [2024-06-28 03:48:50,306 INFO L175 Difference]: Start difference. First operand has 392 places, 226 transitions, 1750 flow. Second operand 12 states and 122 transitions. [2024-06-28 03:48:50,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 385 places, 247 transitions, 2296 flow [2024-06-28 03:48:51,936 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 365 places, 247 transitions, 2177 flow, removed 17 selfloop flow, removed 20 redundant places. [2024-06-28 03:48:51,938 INFO L231 Difference]: Finished difference. Result has 366 places, 207 transitions, 1517 flow [2024-06-28 03:48:51,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1631, PETRI_DIFFERENCE_MINUEND_PLACES=354, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1517, PETRI_PLACES=366, PETRI_TRANSITIONS=207} [2024-06-28 03:48:51,939 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 336 predicate places. [2024-06-28 03:48:51,939 INFO L495 AbstractCegarLoop]: Abstraction has has 366 places, 207 transitions, 1517 flow [2024-06-28 03:48:51,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:51,939 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:51,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:51,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable254 [2024-06-28 03:48:51,939 INFO L420 AbstractCegarLoop]: === Iteration 256 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:51,940 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:51,940 INFO L85 PathProgramCache]: Analyzing trace with hash 1571880730, now seen corresponding path program 11 times [2024-06-28 03:48:51,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:51,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696688593] [2024-06-28 03:48:51,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:51,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:51,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:53,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:53,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:53,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696688593] [2024-06-28 03:48:53,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696688593] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:53,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:53,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:48:53,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728280254] [2024-06-28 03:48:53,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:53,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:48:53,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:53,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:48:53,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:48:53,207 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:48:53,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 366 places, 207 transitions, 1517 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:53,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:53,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:48:53,207 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:53,600 INFO L124 PetriNetUnfolderBase]: 660/1332 cut-off events. [2024-06-28 03:48:53,600 INFO L125 PetriNetUnfolderBase]: For 400840/400840 co-relation queries the response was YES. [2024-06-28 03:48:53,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9367 conditions, 1332 events. 660/1332 cut-off events. For 400840/400840 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 7927 event pairs, 187 based on Foata normal form. 6/1338 useless extension candidates. Maximal degree in co-relation 9210. Up to 1177 conditions per place. [2024-06-28 03:48:53,615 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 181 selfloop transitions, 8 changer transitions 37/228 dead transitions. [2024-06-28 03:48:53,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 228 transitions, 2027 flow [2024-06-28 03:48:53,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:48:53,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:48:53,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 118 transitions. [2024-06-28 03:48:53,617 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3172043010752688 [2024-06-28 03:48:53,617 INFO L175 Difference]: Start difference. First operand has 366 places, 207 transitions, 1517 flow. Second operand 12 states and 118 transitions. [2024-06-28 03:48:53,617 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 228 transitions, 2027 flow [2024-06-28 03:48:55,126 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 228 transitions, 1942 flow, removed 12 selfloop flow, removed 18 redundant places. [2024-06-28 03:48:55,127 INFO L231 Difference]: Finished difference. Result has 342 places, 187 transitions, 1312 flow [2024-06-28 03:48:55,128 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1432, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1312, PETRI_PLACES=342, PETRI_TRANSITIONS=187} [2024-06-28 03:48:55,128 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2024-06-28 03:48:55,128 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 187 transitions, 1312 flow [2024-06-28 03:48:55,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:55,128 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:55,129 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:55,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable255 [2024-06-28 03:48:55,129 INFO L420 AbstractCegarLoop]: === Iteration 257 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:55,130 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:55,130 INFO L85 PathProgramCache]: Analyzing trace with hash -1962328560, now seen corresponding path program 12 times [2024-06-28 03:48:55,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:55,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664847909] [2024-06-28 03:48:55,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:55,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:55,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:56,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:56,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:56,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664847909] [2024-06-28 03:48:56,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664847909] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:56,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:56,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:48:56,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116479943] [2024-06-28 03:48:56,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:56,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:48:56,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:56,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:48:56,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:48:56,547 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:48:56,547 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 187 transitions, 1312 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:56,547 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:56,547 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:48:56,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:48:56,974 INFO L124 PetriNetUnfolderBase]: 608/1220 cut-off events. [2024-06-28 03:48:56,974 INFO L125 PetriNetUnfolderBase]: For 388848/388848 co-relation queries the response was YES. [2024-06-28 03:48:56,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8798 conditions, 1220 events. 608/1220 cut-off events. For 388848/388848 co-relation queries the response was YES. Maximal size of possible extension queue 108. Compared 7110 event pairs, 179 based on Foata normal form. 6/1226 useless extension candidates. Maximal degree in co-relation 8649. Up to 1131 conditions per place. [2024-06-28 03:48:56,987 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 176 selfloop transitions, 8 changer transitions 21/207 dead transitions. [2024-06-28 03:48:56,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 207 transitions, 1772 flow [2024-06-28 03:48:56,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:48:56,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:48:56,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 112 transitions. [2024-06-28 03:48:56,988 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3010752688172043 [2024-06-28 03:48:56,988 INFO L175 Difference]: Start difference. First operand has 342 places, 187 transitions, 1312 flow. Second operand 12 states and 112 transitions. [2024-06-28 03:48:56,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 207 transitions, 1772 flow [2024-06-28 03:48:58,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 207 transitions, 1645 flow, removed 12 selfloop flow, removed 22 redundant places. [2024-06-28 03:48:58,328 INFO L231 Difference]: Finished difference. Result has 309 places, 181 transitions, 1175 flow [2024-06-28 03:48:58,329 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1185, PETRI_DIFFERENCE_MINUEND_PLACES=297, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1175, PETRI_PLACES=309, PETRI_TRANSITIONS=181} [2024-06-28 03:48:58,329 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-06-28 03:48:58,329 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 181 transitions, 1175 flow [2024-06-28 03:48:58,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:58,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:48:58,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:48:58,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable256 [2024-06-28 03:48:58,330 INFO L420 AbstractCegarLoop]: === Iteration 258 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:48:58,330 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:48:58,330 INFO L85 PathProgramCache]: Analyzing trace with hash -2040069454, now seen corresponding path program 13 times [2024-06-28 03:48:58,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:48:58,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421305560] [2024-06-28 03:48:58,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:48:58,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:48:58,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:48:59,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:48:59,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:48:59,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421305560] [2024-06-28 03:48:59,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421305560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:48:59,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:48:59,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:48:59,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299265695] [2024-06-28 03:48:59,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:48:59,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:48:59,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:48:59,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:48:59,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:48:59,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:48:59,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 181 transitions, 1175 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:48:59,720 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:48:59,720 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:48:59,720 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:00,041 INFO L124 PetriNetUnfolderBase]: 584/1174 cut-off events. [2024-06-28 03:49:00,042 INFO L125 PetriNetUnfolderBase]: For 377321/377321 co-relation queries the response was YES. [2024-06-28 03:49:00,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8482 conditions, 1174 events. 584/1174 cut-off events. For 377321/377321 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 6815 event pairs, 151 based on Foata normal form. 6/1180 useless extension candidates. Maximal degree in co-relation 8342. Up to 831 conditions per place. [2024-06-28 03:49:00,054 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 139 selfloop transitions, 36 changer transitions 21/198 dead transitions. [2024-06-28 03:49:00,054 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 308 places, 198 transitions, 1611 flow [2024-06-28 03:49:00,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:49:00,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:49:00,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-28 03:49:00,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3225806451612903 [2024-06-28 03:49:00,055 INFO L175 Difference]: Start difference. First operand has 309 places, 181 transitions, 1175 flow. Second operand 11 states and 110 transitions. [2024-06-28 03:49:00,055 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 308 places, 198 transitions, 1611 flow [2024-06-28 03:49:01,171 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 297 places, 198 transitions, 1583 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-28 03:49:01,173 INFO L231 Difference]: Finished difference. Result has 298 places, 168 transitions, 1156 flow [2024-06-28 03:49:01,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1147, PETRI_DIFFERENCE_MINUEND_PLACES=287, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1156, PETRI_PLACES=298, PETRI_TRANSITIONS=168} [2024-06-28 03:49:01,173 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 268 predicate places. [2024-06-28 03:49:01,173 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 168 transitions, 1156 flow [2024-06-28 03:49:01,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:01,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:01,173 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:01,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable257 [2024-06-28 03:49:01,174 INFO L420 AbstractCegarLoop]: === Iteration 259 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:01,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:01,174 INFO L85 PathProgramCache]: Analyzing trace with hash -2122566352, now seen corresponding path program 14 times [2024-06-28 03:49:01,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:01,174 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978194957] [2024-06-28 03:49:01,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:01,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:02,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:02,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:02,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978194957] [2024-06-28 03:49:02,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1978194957] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:02,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:02,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:49:02,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [875326510] [2024-06-28 03:49:02,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:02,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:49:02,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:02,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:49:02,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:49:02,903 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:49:02,904 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 168 transitions, 1156 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:02,904 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:02,904 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:49:02,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:03,309 INFO L124 PetriNetUnfolderBase]: 540/1094 cut-off events. [2024-06-28 03:49:03,309 INFO L125 PetriNetUnfolderBase]: For 349028/349028 co-relation queries the response was YES. [2024-06-28 03:49:03,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8142 conditions, 1094 events. 540/1094 cut-off events. For 349028/349028 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 6247 event pairs, 159 based on Foata normal form. 6/1100 useless extension candidates. Maximal degree in co-relation 8007. Up to 989 conditions per place. [2024-06-28 03:49:03,321 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 155 selfloop transitions, 18 changer transitions 12/187 dead transitions. [2024-06-28 03:49:03,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 187 transitions, 1580 flow [2024-06-28 03:49:03,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:49:03,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:49:03,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-28 03:49:03,321 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30376344086021506 [2024-06-28 03:49:03,322 INFO L175 Difference]: Start difference. First operand has 298 places, 168 transitions, 1156 flow. Second operand 12 states and 113 transitions. [2024-06-28 03:49:03,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 187 transitions, 1580 flow [2024-06-28 03:49:04,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 187 transitions, 1488 flow, removed 10 selfloop flow, removed 17 redundant places. [2024-06-28 03:49:04,432 INFO L231 Difference]: Finished difference. Result has 281 places, 163 transitions, 1062 flow [2024-06-28 03:49:04,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1064, PETRI_DIFFERENCE_MINUEND_PLACES=269, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1062, PETRI_PLACES=281, PETRI_TRANSITIONS=163} [2024-06-28 03:49:04,433 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 251 predicate places. [2024-06-28 03:49:04,433 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 163 transitions, 1062 flow [2024-06-28 03:49:04,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:04,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:04,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:04,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable258 [2024-06-28 03:49:04,433 INFO L420 AbstractCegarLoop]: === Iteration 260 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:04,433 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:04,433 INFO L85 PathProgramCache]: Analyzing trace with hash -2035600804, now seen corresponding path program 15 times [2024-06-28 03:49:04,433 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:04,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569832165] [2024-06-28 03:49:04,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:04,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:04,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:05,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:05,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:05,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569832165] [2024-06-28 03:49:05,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569832165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:05,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:05,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:05,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984057158] [2024-06-28 03:49:05,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:05,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:05,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:05,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:05,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:05,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:49:05,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 163 transitions, 1062 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:05,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:05,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:49:05,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:06,217 INFO L124 PetriNetUnfolderBase]: 524/1066 cut-off events. [2024-06-28 03:49:06,218 INFO L125 PetriNetUnfolderBase]: For 300860/300860 co-relation queries the response was YES. [2024-06-28 03:49:06,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7628 conditions, 1066 events. 524/1066 cut-off events. For 300860/300860 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 6050 event pairs, 141 based on Foata normal form. 6/1072 useless extension candidates. Maximal degree in co-relation 7502. Up to 807 conditions per place. [2024-06-28 03:49:06,229 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 131 selfloop transitions, 26 changer transitions 21/180 dead transitions. [2024-06-28 03:49:06,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 180 transitions, 1464 flow [2024-06-28 03:49:06,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:49:06,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:49:06,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-06-28 03:49:06,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3196480938416422 [2024-06-28 03:49:06,230 INFO L175 Difference]: Start difference. First operand has 281 places, 163 transitions, 1062 flow. Second operand 11 states and 109 transitions. [2024-06-28 03:49:06,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 286 places, 180 transitions, 1464 flow [2024-06-28 03:49:07,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 275 places, 180 transitions, 1422 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-28 03:49:07,267 INFO L231 Difference]: Finished difference. Result has 276 places, 148 transitions, 991 flow [2024-06-28 03:49:07,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=991, PETRI_PLACES=276, PETRI_TRANSITIONS=148} [2024-06-28 03:49:07,268 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 246 predicate places. [2024-06-28 03:49:07,268 INFO L495 AbstractCegarLoop]: Abstraction has has 276 places, 148 transitions, 991 flow [2024-06-28 03:49:07,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:07,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:07,268 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:07,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable259 [2024-06-28 03:49:07,268 INFO L420 AbstractCegarLoop]: === Iteration 261 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:07,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:07,269 INFO L85 PathProgramCache]: Analyzing trace with hash 2056936794, now seen corresponding path program 16 times [2024-06-28 03:49:07,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:07,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248525477] [2024-06-28 03:49:07,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:07,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:08,497 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:08,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:08,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248525477] [2024-06-28 03:49:08,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248525477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:08,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:08,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:49:08,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118195583] [2024-06-28 03:49:08,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:08,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:49:08,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:08,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:49:08,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:49:08,593 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:49:08,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 276 places, 148 transitions, 991 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:08,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:08,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:49:08,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:08,890 INFO L124 PetriNetUnfolderBase]: 474/976 cut-off events. [2024-06-28 03:49:08,890 INFO L125 PetriNetUnfolderBase]: For 295736/295736 co-relation queries the response was YES. [2024-06-28 03:49:08,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7338 conditions, 976 events. 474/976 cut-off events. For 295736/295736 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 5421 event pairs, 139 based on Foata normal form. 6/982 useless extension candidates. Maximal degree in co-relation 7213. Up to 737 conditions per place. [2024-06-28 03:49:08,899 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 126 selfloop transitions, 15 changer transitions 22/165 dead transitions. [2024-06-28 03:49:08,900 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 165 transitions, 1359 flow [2024-06-28 03:49:08,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:49:08,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:49:08,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-28 03:49:08,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31671554252199413 [2024-06-28 03:49:08,900 INFO L175 Difference]: Start difference. First operand has 276 places, 148 transitions, 991 flow. Second operand 11 states and 108 transitions. [2024-06-28 03:49:08,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 165 transitions, 1359 flow [2024-06-28 03:49:09,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 165 transitions, 1281 flow, removed 13 selfloop flow, removed 18 redundant places. [2024-06-28 03:49:09,646 INFO L231 Difference]: Finished difference. Result has 257 places, 136 transitions, 881 flow [2024-06-28 03:49:09,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=913, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=881, PETRI_PLACES=257, PETRI_TRANSITIONS=136} [2024-06-28 03:49:09,646 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 227 predicate places. [2024-06-28 03:49:09,646 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 136 transitions, 881 flow [2024-06-28 03:49:09,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:09,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:09,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:09,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable260 [2024-06-28 03:49:09,647 INFO L420 AbstractCegarLoop]: === Iteration 262 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:09,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:09,647 INFO L85 PathProgramCache]: Analyzing trace with hash -2122559842, now seen corresponding path program 17 times [2024-06-28 03:49:09,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:09,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450290367] [2024-06-28 03:49:09,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:09,647 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:10,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:10,812 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:10,812 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450290367] [2024-06-28 03:49:10,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450290367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:10,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:10,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:49:10,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2126995488] [2024-06-28 03:49:10,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:10,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:49:10,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:10,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:49:10,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:49:10,912 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:49:10,912 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 136 transitions, 881 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:10,912 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:10,912 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:49:10,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:11,217 INFO L124 PetriNetUnfolderBase]: 431/895 cut-off events. [2024-06-28 03:49:11,217 INFO L125 PetriNetUnfolderBase]: For 251659/251659 co-relation queries the response was YES. [2024-06-28 03:49:11,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6499 conditions, 895 events. 431/895 cut-off events. For 251659/251659 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4867 event pairs, 132 based on Foata normal form. 8/903 useless extension candidates. Maximal degree in co-relation 6383. Up to 741 conditions per place. [2024-06-28 03:49:11,224 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 117 selfloop transitions, 18 changer transitions 15/152 dead transitions. [2024-06-28 03:49:11,225 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 152 transitions, 1227 flow [2024-06-28 03:49:11,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:49:11,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:49:11,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-28 03:49:11,225 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31671554252199413 [2024-06-28 03:49:11,225 INFO L175 Difference]: Start difference. First operand has 257 places, 136 transitions, 881 flow. Second operand 11 states and 108 transitions. [2024-06-28 03:49:11,225 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 152 transitions, 1227 flow [2024-06-28 03:49:11,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 152 transitions, 1169 flow, removed 14 selfloop flow, removed 17 redundant places. [2024-06-28 03:49:11,637 INFO L231 Difference]: Finished difference. Result has 238 places, 126 transitions, 803 flow [2024-06-28 03:49:11,637 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=823, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=803, PETRI_PLACES=238, PETRI_TRANSITIONS=126} [2024-06-28 03:49:11,638 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-06-28 03:49:11,638 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 126 transitions, 803 flow [2024-06-28 03:49:11,638 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:11,638 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:11,638 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:11,638 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable261 [2024-06-28 03:49:11,638 INFO L420 AbstractCegarLoop]: === Iteration 263 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:11,639 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:11,639 INFO L85 PathProgramCache]: Analyzing trace with hash -874490742, now seen corresponding path program 18 times [2024-06-28 03:49:11,639 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:11,639 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [390069418] [2024-06-28 03:49:11,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:11,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:11,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:13,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:13,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:13,143 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [390069418] [2024-06-28 03:49:13,143 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [390069418] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:13,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:13,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:49:13,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270799510] [2024-06-28 03:49:13,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:13,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:49:13,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:13,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:49:13,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:49:13,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:49:13,253 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 126 transitions, 803 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:13,253 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:13,253 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:49:13,253 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:13,738 INFO L124 PetriNetUnfolderBase]: 414/858 cut-off events. [2024-06-28 03:49:13,738 INFO L125 PetriNetUnfolderBase]: For 197129/197129 co-relation queries the response was YES. [2024-06-28 03:49:13,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5996 conditions, 858 events. 414/858 cut-off events. For 197129/197129 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4630 event pairs, 134 based on Foata normal form. 6/864 useless extension candidates. Maximal degree in co-relation 5890. Up to 731 conditions per place. [2024-06-28 03:49:13,745 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 113 selfloop transitions, 11 changer transitions 18/144 dead transitions. [2024-06-28 03:49:13,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 144 transitions, 1137 flow [2024-06-28 03:49:13,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:49:13,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:49:13,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-28 03:49:13,746 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30376344086021506 [2024-06-28 03:49:13,746 INFO L175 Difference]: Start difference. First operand has 238 places, 126 transitions, 803 flow. Second operand 12 states and 113 transitions. [2024-06-28 03:49:13,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 144 transitions, 1137 flow [2024-06-28 03:49:14,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 144 transitions, 1044 flow, removed 15 selfloop flow, removed 19 redundant places. [2024-06-28 03:49:14,097 INFO L231 Difference]: Finished difference. Result has 222 places, 120 transitions, 717 flow [2024-06-28 03:49:14,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=720, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=717, PETRI_PLACES=222, PETRI_TRANSITIONS=120} [2024-06-28 03:49:14,098 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 192 predicate places. [2024-06-28 03:49:14,098 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 120 transitions, 717 flow [2024-06-28 03:49:14,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:14,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:14,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:14,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable262 [2024-06-28 03:49:14,098 INFO L420 AbstractCegarLoop]: === Iteration 264 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:14,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:14,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1651420174, now seen corresponding path program 19 times [2024-06-28 03:49:14,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:14,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813867647] [2024-06-28 03:49:14,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:14,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:14,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:15,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:15,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:15,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813867647] [2024-06-28 03:49:15,491 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813867647] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:15,491 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:15,491 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:49:15,491 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096539096] [2024-06-28 03:49:15,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:15,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:49:15,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:15,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:49:15,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:49:15,623 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:49:15,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 120 transitions, 717 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:15,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:15,624 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:49:15,624 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:16,005 INFO L124 PetriNetUnfolderBase]: 394/818 cut-off events. [2024-06-28 03:49:16,005 INFO L125 PetriNetUnfolderBase]: For 169609/169609 co-relation queries the response was YES. [2024-06-28 03:49:16,010 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5452 conditions, 818 events. 394/818 cut-off events. For 169609/169609 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 4376 event pairs, 130 based on Foata normal form. 6/824 useless extension candidates. Maximal degree in co-relation 5355. Up to 721 conditions per place. [2024-06-28 03:49:16,012 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 110 selfloop transitions, 10 changer transitions 15/137 dead transitions. [2024-06-28 03:49:16,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 137 transitions, 1025 flow [2024-06-28 03:49:16,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:49:16,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:49:16,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 110 transitions. [2024-06-28 03:49:16,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2956989247311828 [2024-06-28 03:49:16,013 INFO L175 Difference]: Start difference. First operand has 222 places, 120 transitions, 717 flow. Second operand 12 states and 110 transitions. [2024-06-28 03:49:16,013 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 137 transitions, 1025 flow [2024-06-28 03:49:16,268 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 137 transitions, 991 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 03:49:16,269 INFO L231 Difference]: Finished difference. Result has 212 places, 115 transitions, 682 flow [2024-06-28 03:49:16,269 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=683, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=682, PETRI_PLACES=212, PETRI_TRANSITIONS=115} [2024-06-28 03:49:16,270 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-06-28 03:49:16,270 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 115 transitions, 682 flow [2024-06-28 03:49:16,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:16,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:16,270 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:16,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable263 [2024-06-28 03:49:16,270 INFO L420 AbstractCegarLoop]: === Iteration 265 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:16,270 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:16,270 INFO L85 PathProgramCache]: Analyzing trace with hash -532257778, now seen corresponding path program 20 times [2024-06-28 03:49:16,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:16,271 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66180564] [2024-06-28 03:49:16,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:16,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:16,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:17,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:17,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:17,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66180564] [2024-06-28 03:49:17,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66180564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:17,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:17,768 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:49:17,768 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737314543] [2024-06-28 03:49:17,768 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:17,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:49:17,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:17,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:49:17,769 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:49:17,905 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:49:17,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 115 transitions, 682 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:17,906 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:17,906 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:49:17,906 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:18,182 INFO L124 PetriNetUnfolderBase]: 378/786 cut-off events. [2024-06-28 03:49:18,182 INFO L125 PetriNetUnfolderBase]: For 151259/151259 co-relation queries the response was YES. [2024-06-28 03:49:18,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5179 conditions, 786 events. 378/786 cut-off events. For 151259/151259 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4175 event pairs, 128 based on Foata normal form. 6/792 useless extension candidates. Maximal degree in co-relation 5087. Up to 711 conditions per place. [2024-06-28 03:49:18,188 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 109 selfloop transitions, 9 changer transitions 12/132 dead transitions. [2024-06-28 03:49:18,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 132 transitions, 980 flow [2024-06-28 03:49:18,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:49:18,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:49:18,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 108 transitions. [2024-06-28 03:49:18,189 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2024-06-28 03:49:18,189 INFO L175 Difference]: Start difference. First operand has 212 places, 115 transitions, 682 flow. Second operand 12 states and 108 transitions. [2024-06-28 03:49:18,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 132 transitions, 980 flow [2024-06-28 03:49:18,412 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 132 transitions, 950 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 03:49:18,413 INFO L231 Difference]: Finished difference. Result has 204 places, 111 transitions, 653 flow [2024-06-28 03:49:18,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=652, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=653, PETRI_PLACES=204, PETRI_TRANSITIONS=111} [2024-06-28 03:49:18,413 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 174 predicate places. [2024-06-28 03:49:18,413 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 111 transitions, 653 flow [2024-06-28 03:49:18,413 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:18,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:18,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:18,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable264 [2024-06-28 03:49:18,413 INFO L420 AbstractCegarLoop]: === Iteration 266 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:18,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:18,414 INFO L85 PathProgramCache]: Analyzing trace with hash -760158928, now seen corresponding path program 21 times [2024-06-28 03:49:18,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:18,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512225812] [2024-06-28 03:49:18,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:18,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:18,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:19,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:19,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:19,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512225812] [2024-06-28 03:49:19,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512225812] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:19,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:19,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:19,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889933021] [2024-06-28 03:49:19,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:19,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:19,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:19,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:19,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:19,863 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:49:19,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 111 transitions, 653 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:19,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:19,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:49:19,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:20,169 INFO L124 PetriNetUnfolderBase]: 354/734 cut-off events. [2024-06-28 03:49:20,169 INFO L125 PetriNetUnfolderBase]: For 117733/117733 co-relation queries the response was YES. [2024-06-28 03:49:20,172 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4419 conditions, 734 events. 354/734 cut-off events. For 117733/117733 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3803 event pairs, 115 based on Foata normal form. 6/740 useless extension candidates. Maximal degree in co-relation 4331. Up to 668 conditions per place. [2024-06-28 03:49:20,174 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 99 selfloop transitions, 3 changer transitions 22/126 dead transitions. [2024-06-28 03:49:20,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 126 transitions, 935 flow [2024-06-28 03:49:20,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:49:20,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:49:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-28 03:49:20,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2024-06-28 03:49:20,175 INFO L175 Difference]: Start difference. First operand has 204 places, 111 transitions, 653 flow. Second operand 11 states and 99 transitions. [2024-06-28 03:49:20,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 126 transitions, 935 flow [2024-06-28 03:49:20,327 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 126 transitions, 909 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:49:20,328 INFO L231 Difference]: Finished difference. Result has 197 places, 103 transitions, 598 flow [2024-06-28 03:49:20,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=598, PETRI_PLACES=197, PETRI_TRANSITIONS=103} [2024-06-28 03:49:20,328 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-06-28 03:49:20,329 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 103 transitions, 598 flow [2024-06-28 03:49:20,329 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:20,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:20,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:20,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable265 [2024-06-28 03:49:20,329 INFO L420 AbstractCegarLoop]: === Iteration 267 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:20,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:20,329 INFO L85 PathProgramCache]: Analyzing trace with hash 277552330, now seen corresponding path program 22 times [2024-06-28 03:49:20,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:20,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066723541] [2024-06-28 03:49:20,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:20,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:20,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:21,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:21,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:21,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066723541] [2024-06-28 03:49:21,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066723541] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:21,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:21,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:49:21,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858054271] [2024-06-28 03:49:21,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:21,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:49:21,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:21,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:49:21,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:49:21,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:49:21,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 103 transitions, 598 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:21,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:21,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:49:21,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:22,009 INFO L124 PetriNetUnfolderBase]: 337/696 cut-off events. [2024-06-28 03:49:22,010 INFO L125 PetriNetUnfolderBase]: For 109138/109138 co-relation queries the response was YES. [2024-06-28 03:49:22,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4206 conditions, 696 events. 337/696 cut-off events. For 109138/109138 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3578 event pairs, 103 based on Foata normal form. 6/702 useless extension candidates. Maximal degree in co-relation 4121. Up to 476 conditions per place. [2024-06-28 03:49:22,015 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 75 selfloop transitions, 32 changer transitions 12/121 dead transitions. [2024-06-28 03:49:22,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 193 places, 121 transitions, 874 flow [2024-06-28 03:49:22,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:49:22,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:49:22,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 116 transitions. [2024-06-28 03:49:22,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3118279569892473 [2024-06-28 03:49:22,015 INFO L175 Difference]: Start difference. First operand has 197 places, 103 transitions, 598 flow. Second operand 12 states and 116 transitions. [2024-06-28 03:49:22,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 193 places, 121 transitions, 874 flow [2024-06-28 03:49:22,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 121 transitions, 850 flow, removed 8 selfloop flow, removed 12 redundant places. [2024-06-28 03:49:22,139 INFO L231 Difference]: Finished difference. Result has 182 places, 99 transitions, 621 flow [2024-06-28 03:49:22,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=621, PETRI_PLACES=182, PETRI_TRANSITIONS=99} [2024-06-28 03:49:22,140 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 152 predicate places. [2024-06-28 03:49:22,140 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 99 transitions, 621 flow [2024-06-28 03:49:22,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:22,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:22,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:22,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable266 [2024-06-28 03:49:22,140 INFO L420 AbstractCegarLoop]: === Iteration 268 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:22,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:22,140 INFO L85 PathProgramCache]: Analyzing trace with hash -934901258, now seen corresponding path program 23 times [2024-06-28 03:49:22,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:22,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916060780] [2024-06-28 03:49:22,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:22,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:22,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:23,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:23,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:23,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916060780] [2024-06-28 03:49:23,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916060780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:23,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:23,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:23,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190880915] [2024-06-28 03:49:23,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:23,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:23,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:23,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:23,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:23,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:49:23,566 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 99 transitions, 621 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:23,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:23,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:49:23,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:23,834 INFO L124 PetriNetUnfolderBase]: 313/644 cut-off events. [2024-06-28 03:49:23,834 INFO L125 PetriNetUnfolderBase]: For 75434/75434 co-relation queries the response was YES. [2024-06-28 03:49:23,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3502 conditions, 644 events. 313/644 cut-off events. For 75434/75434 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3235 event pairs, 90 based on Foata normal form. 6/650 useless extension candidates. Maximal degree in co-relation 3424. Up to 423 conditions per place. [2024-06-28 03:49:23,839 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 71 selfloop transitions, 28 changer transitions 14/115 dead transitions. [2024-06-28 03:49:23,839 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 115 transitions, 881 flow [2024-06-28 03:49:23,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:49:23,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:49:23,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-28 03:49:23,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-28 03:49:23,839 INFO L175 Difference]: Start difference. First operand has 182 places, 99 transitions, 621 flow. Second operand 11 states and 107 transitions. [2024-06-28 03:49:23,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 115 transitions, 881 flow [2024-06-28 03:49:23,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 115 transitions, 809 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-28 03:49:23,954 INFO L231 Difference]: Finished difference. Result has 175 places, 93 transitions, 579 flow [2024-06-28 03:49:23,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=549, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=579, PETRI_PLACES=175, PETRI_TRANSITIONS=93} [2024-06-28 03:49:23,954 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 145 predicate places. [2024-06-28 03:49:23,954 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 93 transitions, 579 flow [2024-06-28 03:49:23,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:23,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:23,954 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:23,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable267 [2024-06-28 03:49:23,955 INFO L420 AbstractCegarLoop]: === Iteration 269 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:23,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:23,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1476504864, now seen corresponding path program 24 times [2024-06-28 03:49:23,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:23,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521887943] [2024-06-28 03:49:23,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:23,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:23,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:25,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:25,402 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:25,402 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521887943] [2024-06-28 03:49:25,402 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521887943] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:25,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:25,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:49:25,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252305818] [2024-06-28 03:49:25,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:25,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:49:25,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:25,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:49:25,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:49:25,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:49:25,579 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 93 transitions, 579 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:25,579 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:25,579 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:49:25,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:25,888 INFO L124 PetriNetUnfolderBase]: 293/608 cut-off events. [2024-06-28 03:49:25,888 INFO L125 PetriNetUnfolderBase]: For 69182/69182 co-relation queries the response was YES. [2024-06-28 03:49:25,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3315 conditions, 608 events. 293/608 cut-off events. For 69182/69182 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 3005 event pairs, 88 based on Foata normal form. 6/614 useless extension candidates. Maximal degree in co-relation 3240. Up to 405 conditions per place. [2024-06-28 03:49:25,892 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 64 selfloop transitions, 30 changer transitions 14/110 dead transitions. [2024-06-28 03:49:25,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 110 transitions, 831 flow [2024-06-28 03:49:25,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:49:25,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:49:25,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 113 transitions. [2024-06-28 03:49:25,893 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30376344086021506 [2024-06-28 03:49:25,893 INFO L175 Difference]: Start difference. First operand has 175 places, 93 transitions, 579 flow. Second operand 12 states and 113 transitions. [2024-06-28 03:49:25,893 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 110 transitions, 831 flow [2024-06-28 03:49:25,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 110 transitions, 765 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-28 03:49:25,988 INFO L231 Difference]: Finished difference. Result has 167 places, 89 transitions, 558 flow [2024-06-28 03:49:25,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=513, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=558, PETRI_PLACES=167, PETRI_TRANSITIONS=89} [2024-06-28 03:49:25,988 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 137 predicate places. [2024-06-28 03:49:25,988 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 89 transitions, 558 flow [2024-06-28 03:49:25,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:25,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:25,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:25,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable268 [2024-06-28 03:49:25,989 INFO L420 AbstractCegarLoop]: === Iteration 270 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:25,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:25,989 INFO L85 PathProgramCache]: Analyzing trace with hash -962207770, now seen corresponding path program 25 times [2024-06-28 03:49:25,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:25,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334533612] [2024-06-28 03:49:25,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:25,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:25,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:27,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:27,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334533612] [2024-06-28 03:49:27,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334533612] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:27,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:27,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:27,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489769747] [2024-06-28 03:49:27,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:27,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:27,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:27,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:27,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:27,348 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:49:27,348 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 89 transitions, 558 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:27,348 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:27,348 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:49:27,349 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:27,581 INFO L124 PetriNetUnfolderBase]: 264/549 cut-off events. [2024-06-28 03:49:27,581 INFO L125 PetriNetUnfolderBase]: For 49050/49050 co-relation queries the response was YES. [2024-06-28 03:49:27,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2693 conditions, 549 events. 264/549 cut-off events. For 49050/49050 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2634 event pairs, 69 based on Foata normal form. 6/555 useless extension candidates. Maximal degree in co-relation 2622. Up to 352 conditions per place. [2024-06-28 03:49:27,585 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 61 selfloop transitions, 27 changer transitions 15/105 dead transitions. [2024-06-28 03:49:27,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 105 transitions, 798 flow [2024-06-28 03:49:27,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:49:27,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:49:27,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-28 03:49:27,586 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31378299120234604 [2024-06-28 03:49:27,586 INFO L175 Difference]: Start difference. First operand has 167 places, 89 transitions, 558 flow. Second operand 11 states and 107 transitions. [2024-06-28 03:49:27,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 105 transitions, 798 flow [2024-06-28 03:49:27,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 105 transitions, 730 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-28 03:49:27,654 INFO L231 Difference]: Finished difference. Result has 160 places, 82 transitions, 513 flow [2024-06-28 03:49:27,654 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=490, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=513, PETRI_PLACES=160, PETRI_TRANSITIONS=82} [2024-06-28 03:49:27,655 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-06-28 03:49:27,655 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 82 transitions, 513 flow [2024-06-28 03:49:27,655 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:27,655 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:27,655 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:27,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable269 [2024-06-28 03:49:27,655 INFO L420 AbstractCegarLoop]: === Iteration 271 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:27,655 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:27,655 INFO L85 PathProgramCache]: Analyzing trace with hash -935074238, now seen corresponding path program 26 times [2024-06-28 03:49:27,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:27,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558791632] [2024-06-28 03:49:27,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:27,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:27,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:28,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:28,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:28,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558791632] [2024-06-28 03:49:28,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558791632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:28,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:28,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:28,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587915365] [2024-06-28 03:49:28,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:28,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:28,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:28,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:28,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:28,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:49:28,986 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 82 transitions, 513 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:28,986 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:28,986 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:49:28,986 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:29,184 INFO L124 PetriNetUnfolderBase]: 245/512 cut-off events. [2024-06-28 03:49:29,184 INFO L125 PetriNetUnfolderBase]: For 44540/44540 co-relation queries the response was YES. [2024-06-28 03:49:29,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2530 conditions, 512 events. 245/512 cut-off events. For 44540/44540 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2407 event pairs, 71 based on Foata normal form. 6/518 useless extension candidates. Maximal degree in co-relation 2462. Up to 334 conditions per place. [2024-06-28 03:49:29,187 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 59 selfloop transitions, 22 changer transitions 15/98 dead transitions. [2024-06-28 03:49:29,187 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 98 transitions, 739 flow [2024-06-28 03:49:29,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:49:29,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:49:29,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-28 03:49:29,188 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30791788856304986 [2024-06-28 03:49:29,188 INFO L175 Difference]: Start difference. First operand has 160 places, 82 transitions, 513 flow. Second operand 11 states and 105 transitions. [2024-06-28 03:49:29,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 98 transitions, 739 flow [2024-06-28 03:49:29,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 98 transitions, 673 flow, removed 6 selfloop flow, removed 13 redundant places. [2024-06-28 03:49:29,252 INFO L231 Difference]: Finished difference. Result has 149 places, 77 transitions, 471 flow [2024-06-28 03:49:29,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=471, PETRI_PLACES=149, PETRI_TRANSITIONS=77} [2024-06-28 03:49:29,253 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 119 predicate places. [2024-06-28 03:49:29,253 INFO L495 AbstractCegarLoop]: Abstraction has has 149 places, 77 transitions, 471 flow [2024-06-28 03:49:29,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:29,253 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:29,253 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:29,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable270 [2024-06-28 03:49:29,253 INFO L420 AbstractCegarLoop]: === Iteration 272 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:29,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:29,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1472036214, now seen corresponding path program 27 times [2024-06-28 03:49:29,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:29,254 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810108617] [2024-06-28 03:49:29,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:29,254 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:29,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:30,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:30,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:30,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810108617] [2024-06-28 03:49:30,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810108617] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:30,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:30,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:49:30,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618964123] [2024-06-28 03:49:30,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:30,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:49:30,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:30,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:49:30,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:49:30,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:49:30,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 149 places, 77 transitions, 471 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:30,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:30,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:49:30,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:31,146 INFO L124 PetriNetUnfolderBase]: 232/485 cut-off events. [2024-06-28 03:49:31,146 INFO L125 PetriNetUnfolderBase]: For 37594/37594 co-relation queries the response was YES. [2024-06-28 03:49:31,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2349 conditions, 485 events. 232/485 cut-off events. For 37594/37594 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2234 event pairs, 65 based on Foata normal form. 6/491 useless extension candidates. Maximal degree in co-relation 2286. Up to 288 conditions per place. [2024-06-28 03:49:31,148 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 54 selfloop transitions, 24 changer transitions 14/94 dead transitions. [2024-06-28 03:49:31,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 94 transitions, 691 flow [2024-06-28 03:49:31,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:49:31,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:49:31,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 111 transitions. [2024-06-28 03:49:31,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29838709677419356 [2024-06-28 03:49:31,149 INFO L175 Difference]: Start difference. First operand has 149 places, 77 transitions, 471 flow. Second operand 12 states and 111 transitions. [2024-06-28 03:49:31,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 94 transitions, 691 flow [2024-06-28 03:49:31,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 141 places, 94 transitions, 637 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 03:49:31,189 INFO L231 Difference]: Finished difference. Result has 142 places, 71 transitions, 440 flow [2024-06-28 03:49:31,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=417, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=440, PETRI_PLACES=142, PETRI_TRANSITIONS=71} [2024-06-28 03:49:31,189 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 112 predicate places. [2024-06-28 03:49:31,190 INFO L495 AbstractCegarLoop]: Abstraction has has 142 places, 71 transitions, 440 flow [2024-06-28 03:49:31,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:31,190 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:31,190 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:31,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable271 [2024-06-28 03:49:31,190 INFO L420 AbstractCegarLoop]: === Iteration 273 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:31,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:31,190 INFO L85 PathProgramCache]: Analyzing trace with hash -868299010, now seen corresponding path program 28 times [2024-06-28 03:49:31,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:31,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877223765] [2024-06-28 03:49:31,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:31,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:32,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:32,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:32,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877223765] [2024-06-28 03:49:32,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877223765] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:32,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:32,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:32,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305674911] [2024-06-28 03:49:32,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:32,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:32,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:32,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:32,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:32,710 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:49:32,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 142 places, 71 transitions, 440 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:32,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:32,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:49:32,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:32,952 INFO L124 PetriNetUnfolderBase]: 200/417 cut-off events. [2024-06-28 03:49:32,953 INFO L125 PetriNetUnfolderBase]: For 24300/24300 co-relation queries the response was YES. [2024-06-28 03:49:32,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1805 conditions, 417 events. 200/417 cut-off events. For 24300/24300 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1814 event pairs, 48 based on Foata normal form. 6/423 useless extension candidates. Maximal degree in co-relation 1746. Up to 235 conditions per place. [2024-06-28 03:49:32,954 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 44 selfloop transitions, 19 changer transitions 21/86 dead transitions. [2024-06-28 03:49:32,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 86 transitions, 640 flow [2024-06-28 03:49:32,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:49:32,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:49:32,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 104 transitions. [2024-06-28 03:49:32,955 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30498533724340177 [2024-06-28 03:49:32,955 INFO L175 Difference]: Start difference. First operand has 142 places, 71 transitions, 440 flow. Second operand 11 states and 104 transitions. [2024-06-28 03:49:32,955 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 86 transitions, 640 flow [2024-06-28 03:49:32,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 86 transitions, 580 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-28 03:49:32,982 INFO L231 Difference]: Finished difference. Result has 131 places, 58 transitions, 359 flow [2024-06-28 03:49:32,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=359, PETRI_PLACES=131, PETRI_TRANSITIONS=58} [2024-06-28 03:49:32,983 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-06-28 03:49:32,983 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 58 transitions, 359 flow [2024-06-28 03:49:32,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:32,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:32,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:32,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable272 [2024-06-28 03:49:32,983 INFO L420 AbstractCegarLoop]: === Iteration 274 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:32,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:32,983 INFO L85 PathProgramCache]: Analyzing trace with hash 697330210, now seen corresponding path program 29 times [2024-06-28 03:49:32,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:32,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133286893] [2024-06-28 03:49:32,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:32,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:34,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:34,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:34,189 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133286893] [2024-06-28 03:49:34,189 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133286893] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:34,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:34,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:34,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521700891] [2024-06-28 03:49:34,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:34,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:34,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:34,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:34,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:34,374 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:49:34,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 58 transitions, 359 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:34,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:34,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:49:34,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:34,562 INFO L124 PetriNetUnfolderBase]: 161/344 cut-off events. [2024-06-28 03:49:34,562 INFO L125 PetriNetUnfolderBase]: For 19877/19877 co-relation queries the response was YES. [2024-06-28 03:49:34,564 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1526 conditions, 344 events. 161/344 cut-off events. For 19877/19877 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1403 event pairs, 44 based on Foata normal form. 6/350 useless extension candidates. Maximal degree in co-relation 1472. Up to 211 conditions per place. [2024-06-28 03:49:34,564 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 42 selfloop transitions, 19 changer transitions 11/74 dead transitions. [2024-06-28 03:49:34,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 74 transitions, 537 flow [2024-06-28 03:49:34,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:49:34,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:49:34,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 105 transitions. [2024-06-28 03:49:34,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30791788856304986 [2024-06-28 03:49:34,565 INFO L175 Difference]: Start difference. First operand has 131 places, 58 transitions, 359 flow. Second operand 11 states and 105 transitions. [2024-06-28 03:49:34,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 74 transitions, 537 flow [2024-06-28 03:49:34,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 74 transitions, 479 flow, removed 10 selfloop flow, removed 17 redundant places. [2024-06-28 03:49:34,581 INFO L231 Difference]: Finished difference. Result has 112 places, 53 transitions, 318 flow [2024-06-28 03:49:34,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=301, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=318, PETRI_PLACES=112, PETRI_TRANSITIONS=53} [2024-06-28 03:49:34,581 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 82 predicate places. [2024-06-28 03:49:34,582 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 53 transitions, 318 flow [2024-06-28 03:49:34,582 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:34,582 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:34,582 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:34,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable273 [2024-06-28 03:49:34,582 INFO L420 AbstractCegarLoop]: === Iteration 275 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:34,582 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:34,582 INFO L85 PathProgramCache]: Analyzing trace with hash 977796230, now seen corresponding path program 30 times [2024-06-28 03:49:34,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:34,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626445689] [2024-06-28 03:49:34,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:34,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:34,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:35,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:35,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:35,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626445689] [2024-06-28 03:49:35,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626445689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:35,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:35,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:35,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731588203] [2024-06-28 03:49:35,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:35,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:35,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:35,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:35,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:35,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:49:35,983 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 53 transitions, 318 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:35,983 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:35,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:49:35,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:36,207 INFO L124 PetriNetUnfolderBase]: 133/284 cut-off events. [2024-06-28 03:49:36,207 INFO L125 PetriNetUnfolderBase]: For 8666/8666 co-relation queries the response was YES. [2024-06-28 03:49:36,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1039 conditions, 284 events. 133/284 cut-off events. For 8666/8666 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1071 event pairs, 39 based on Foata normal form. 6/290 useless extension candidates. Maximal degree in co-relation 994. Up to 225 conditions per place. [2024-06-28 03:49:36,208 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 42 selfloop transitions, 4 changer transitions 18/66 dead transitions. [2024-06-28 03:49:36,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 66 transitions, 474 flow [2024-06-28 03:49:36,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:49:36,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:49:36,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 96 transitions. [2024-06-28 03:49:36,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28152492668621704 [2024-06-28 03:49:36,209 INFO L175 Difference]: Start difference. First operand has 112 places, 53 transitions, 318 flow. Second operand 11 states and 96 transitions. [2024-06-28 03:49:36,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 66 transitions, 474 flow [2024-06-28 03:49:36,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 103 places, 66 transitions, 426 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-28 03:49:36,216 INFO L231 Difference]: Finished difference. Result has 104 places, 46 transitions, 249 flow [2024-06-28 03:49:36,216 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=270, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=249, PETRI_PLACES=104, PETRI_TRANSITIONS=46} [2024-06-28 03:49:36,216 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-06-28 03:49:36,216 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 46 transitions, 249 flow [2024-06-28 03:49:36,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:36,217 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:36,217 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:36,217 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable274 [2024-06-28 03:49:36,217 INFO L420 AbstractCegarLoop]: === Iteration 276 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:36,217 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:36,217 INFO L85 PathProgramCache]: Analyzing trace with hash -1195430572, now seen corresponding path program 31 times [2024-06-28 03:49:36,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:36,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553380091] [2024-06-28 03:49:36,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:36,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:36,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:37,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:37,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:37,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553380091] [2024-06-28 03:49:37,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553380091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:37,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:37,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:37,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507199858] [2024-06-28 03:49:37,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:37,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:37,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:37,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:37,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:37,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:49:37,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 46 transitions, 249 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:37,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:37,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:49:37,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:37,717 INFO L124 PetriNetUnfolderBase]: 121/256 cut-off events. [2024-06-28 03:49:37,717 INFO L125 PetriNetUnfolderBase]: For 6906/6906 co-relation queries the response was YES. [2024-06-28 03:49:37,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 895 conditions, 256 events. 121/256 cut-off events. For 6906/6906 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 919 event pairs, 27 based on Foata normal form. 6/262 useless extension candidates. Maximal degree in co-relation 854. Up to 120 conditions per place. [2024-06-28 03:49:37,718 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 27 selfloop transitions, 9 changer transitions 23/61 dead transitions. [2024-06-28 03:49:37,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 61 transitions, 399 flow [2024-06-28 03:49:37,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:49:37,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:49:37,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-06-28 03:49:37,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2903225806451613 [2024-06-28 03:49:37,718 INFO L175 Difference]: Start difference. First operand has 104 places, 46 transitions, 249 flow. Second operand 11 states and 99 transitions. [2024-06-28 03:49:37,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 61 transitions, 399 flow [2024-06-28 03:49:37,724 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 61 transitions, 379 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:49:37,724 INFO L231 Difference]: Finished difference. Result has 91 places, 33 transitions, 193 flow [2024-06-28 03:49:37,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=193, PETRI_PLACES=91, PETRI_TRANSITIONS=33} [2024-06-28 03:49:37,725 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 61 predicate places. [2024-06-28 03:49:37,725 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 33 transitions, 193 flow [2024-06-28 03:49:37,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:37,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:37,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:37,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable275 [2024-06-28 03:49:37,725 INFO L420 AbstractCegarLoop]: === Iteration 277 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:37,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:37,725 INFO L85 PathProgramCache]: Analyzing trace with hash 551460248, now seen corresponding path program 32 times [2024-06-28 03:49:37,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:37,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932724202] [2024-06-28 03:49:37,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:37,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:39,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:39,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:39,204 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932724202] [2024-06-28 03:49:39,204 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932724202] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:39,204 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:39,205 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-28 03:49:39,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008962416] [2024-06-28 03:49:39,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:39,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-28 03:49:39,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:39,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-28 03:49:39,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-06-28 03:49:39,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:49:39,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 33 transitions, 193 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:39,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:39,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:49:39,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:39,611 INFO L124 PetriNetUnfolderBase]: 80/177 cut-off events. [2024-06-28 03:49:39,611 INFO L125 PetriNetUnfolderBase]: For 5026/5026 co-relation queries the response was YES. [2024-06-28 03:49:39,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 664 conditions, 177 events. 80/177 cut-off events. For 5026/5026 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 531 event pairs, 23 based on Foata normal form. 6/183 useless extension candidates. Maximal degree in co-relation 628. Up to 94 conditions per place. [2024-06-28 03:49:39,612 INFO L140 encePairwiseOnDemand]: 20/31 looper letters, 23 selfloop transitions, 7 changer transitions 18/50 dead transitions. [2024-06-28 03:49:39,612 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 50 transitions, 325 flow [2024-06-28 03:49:39,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:49:39,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:49:39,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 105 transitions. [2024-06-28 03:49:39,612 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28225806451612906 [2024-06-28 03:49:39,613 INFO L175 Difference]: Start difference. First operand has 91 places, 33 transitions, 193 flow. Second operand 12 states and 105 transitions. [2024-06-28 03:49:39,613 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 50 transitions, 325 flow [2024-06-28 03:49:39,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 50 transitions, 285 flow, removed 11 selfloop flow, removed 17 redundant places. [2024-06-28 03:49:39,615 INFO L231 Difference]: Finished difference. Result has 72 places, 27 transitions, 143 flow [2024-06-28 03:49:39,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=143, PETRI_PLACES=72, PETRI_TRANSITIONS=27} [2024-06-28 03:49:39,616 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2024-06-28 03:49:39,616 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 27 transitions, 143 flow [2024-06-28 03:49:39,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:39,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:39,616 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:39,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable276 [2024-06-28 03:49:39,616 INFO L420 AbstractCegarLoop]: === Iteration 278 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:39,616 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:39,616 INFO L85 PathProgramCache]: Analyzing trace with hash -284817734, now seen corresponding path program 33 times [2024-06-28 03:49:39,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:39,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082961739] [2024-06-28 03:49:39,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:39,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:39,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:40,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:40,776 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:40,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082961739] [2024-06-28 03:49:40,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082961739] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:40,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:40,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:40,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366425936] [2024-06-28 03:49:40,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:40,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:40,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:40,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:40,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:40,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:49:40,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 27 transitions, 143 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:40,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:40,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:49:40,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:41,113 INFO L124 PetriNetUnfolderBase]: 63/142 cut-off events. [2024-06-28 03:49:41,113 INFO L125 PetriNetUnfolderBase]: For 2158/2158 co-relation queries the response was YES. [2024-06-28 03:49:41,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 142 events. 63/142 cut-off events. For 2158/2158 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 364 event pairs, 19 based on Foata normal form. 6/148 useless extension candidates. Maximal degree in co-relation 472. Up to 68 conditions per place. [2024-06-28 03:49:41,113 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 18 selfloop transitions, 5 changer transitions 17/42 dead transitions. [2024-06-28 03:49:41,114 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 42 transitions, 255 flow [2024-06-28 03:49:41,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:49:41,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:49:41,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 96 transitions. [2024-06-28 03:49:41,114 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28152492668621704 [2024-06-28 03:49:41,114 INFO L175 Difference]: Start difference. First operand has 72 places, 27 transitions, 143 flow. Second operand 11 states and 96 transitions. [2024-06-28 03:49:41,114 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 42 transitions, 255 flow [2024-06-28 03:49:41,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 42 transitions, 229 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-28 03:49:41,116 INFO L231 Difference]: Finished difference. Result has 61 places, 22 transitions, 108 flow [2024-06-28 03:49:41,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=108, PETRI_PLACES=61, PETRI_TRANSITIONS=22} [2024-06-28 03:49:41,116 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 31 predicate places. [2024-06-28 03:49:41,116 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 22 transitions, 108 flow [2024-06-28 03:49:41,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:41,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:49:41,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:41,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable277 [2024-06-28 03:49:41,117 INFO L420 AbstractCegarLoop]: === Iteration 279 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-28 03:49:41,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:49:41,117 INFO L85 PathProgramCache]: Analyzing trace with hash -395640254, now seen corresponding path program 34 times [2024-06-28 03:49:41,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:49:41,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008792536] [2024-06-28 03:49:41,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:49:41,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:49:41,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:49:42,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:49:42,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:49:42,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008792536] [2024-06-28 03:49:42,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008792536] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:49:42,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:49:42,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-28 03:49:42,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694887867] [2024-06-28 03:49:42,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:49:42,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-28 03:49:42,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:49:42,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-28 03:49:42,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-28 03:49:42,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 31 [2024-06-28 03:49:42,428 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 22 transitions, 108 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:42,428 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:49:42,428 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 31 [2024-06-28 03:49:42,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:49:42,531 INFO L124 PetriNetUnfolderBase]: 30/75 cut-off events. [2024-06-28 03:49:42,532 INFO L125 PetriNetUnfolderBase]: For 590/590 co-relation queries the response was YES. [2024-06-28 03:49:42,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213 conditions, 75 events. 30/75 cut-off events. For 590/590 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 120 event pairs, 0 based on Foata normal form. 6/81 useless extension candidates. Maximal degree in co-relation 192. Up to 24 conditions per place. [2024-06-28 03:49:42,532 INFO L140 encePairwiseOnDemand]: 21/31 looper letters, 0 selfloop transitions, 0 changer transitions 32/32 dead transitions. [2024-06-28 03:49:42,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 32 transitions, 160 flow [2024-06-28 03:49:42,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:49:42,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:49:42,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 86 transitions. [2024-06-28 03:49:42,533 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.25219941348973607 [2024-06-28 03:49:42,533 INFO L175 Difference]: Start difference. First operand has 61 places, 22 transitions, 108 flow. Second operand 11 states and 86 transitions. [2024-06-28 03:49:42,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 32 transitions, 160 flow [2024-06-28 03:49:42,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 32 transitions, 130 flow, removed 1 selfloop flow, removed 15 redundant places. [2024-06-28 03:49:42,533 INFO L231 Difference]: Finished difference. Result has 46 places, 0 transitions, 0 flow [2024-06-28 03:49:42,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=31, PETRI_DIFFERENCE_MINUEND_FLOW=48, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=0, PETRI_PLACES=46, PETRI_TRANSITIONS=0} [2024-06-28 03:49:42,533 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 16 predicate places. [2024-06-28 03:49:42,534 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 0 transitions, 0 flow [2024-06-28 03:49:42,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:49:42,536 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 03:49:42,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 03:49:42,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 03:49:42,537 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 03:49:42,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable278 [2024-06-28 03:49:42,537 INFO L445 BasicCegarLoop]: Path program histogram: [56, 35, 34, 21, 20, 18, 15, 10, 10, 8, 7, 6, 6, 5, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:49:42,541 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 03:49:42,541 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 03:49:42,545 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 03:49:42,545 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 03:49:42,546 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 03:49:42 BasicIcfg [2024-06-28 03:49:42,546 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 03:49:42,546 INFO L158 Benchmark]: Toolchain (without parser) took 620577.30ms. Allocated memory was 161.5MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 123.1MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 196.6MB. Max. memory is 16.1GB. [2024-06-28 03:49:42,547 INFO L158 Benchmark]: Witness Parser took 0.19ms. Allocated memory is still 104.9MB. Free memory was 76.7MB in the beginning and 76.4MB in the end (delta: 211.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 03:49:42,547 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 104.9MB. Free memory is still 70.8MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:49:42,547 INFO L158 Benchmark]: CACSL2BoogieTranslator took 741.07ms. Allocated memory is still 161.5MB. Free memory was 122.1MB in the beginning and 89.6MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. [2024-06-28 03:49:42,548 INFO L158 Benchmark]: Boogie Procedure Inliner took 83.62ms. Allocated memory is still 161.5MB. Free memory was 89.6MB in the beginning and 86.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 03:49:42,548 INFO L158 Benchmark]: Boogie Preprocessor took 95.14ms. Allocated memory is still 161.5MB. Free memory was 86.4MB in the beginning and 83.2MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 03:49:42,548 INFO L158 Benchmark]: RCFGBuilder took 861.35ms. Allocated memory is still 161.5MB. Free memory was 82.2MB in the beginning and 80.2MB in the end (delta: 2.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-06-28 03:49:42,548 INFO L158 Benchmark]: TraceAbstraction took 618789.68ms. Allocated memory was 161.5MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 80.2MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 154.8MB. Max. memory is 16.1GB. [2024-06-28 03:49:42,550 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * Witness Parser took 0.19ms. Allocated memory is still 104.9MB. Free memory was 76.7MB in the beginning and 76.4MB in the end (delta: 211.9kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CDTParser took 0.10ms. Allocated memory is still 104.9MB. Free memory is still 70.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 741.07ms. Allocated memory is still 161.5MB. Free memory was 122.1MB in the beginning and 89.6MB in the end (delta: 32.5MB). Peak memory consumption was 31.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 83.62ms. Allocated memory is still 161.5MB. Free memory was 89.6MB in the beginning and 86.4MB in the end (delta: 3.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 95.14ms. Allocated memory is still 161.5MB. Free memory was 86.4MB in the beginning and 83.2MB in the end (delta: 3.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 861.35ms. Allocated memory is still 161.5MB. Free memory was 82.2MB in the beginning and 80.2MB in the end (delta: 2.1MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * TraceAbstraction took 618789.68ms. Allocated memory was 161.5MB in the beginning and 2.3GB in the end (delta: 2.2GB). Free memory was 80.2MB in the beginning and 2.1GB in the end (delta: -2.0GB). Peak memory consumption was 154.8MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 805]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 806]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 50 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 618.7s, OverallIterations: 279, TraceHistogramMax: 1, PathProgramHistogramMax: 56, EmptinessCheckTime: 0.0s, AutomataDifference: 343.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18295 SdHoareTripleChecker+Valid, 66.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15575 mSDsluCounter, 15848 SdHoareTripleChecker+Invalid, 57.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 14420 mSDsCounter, 4471 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 102624 IncrementalHoareTripleChecker+Invalid, 107095 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4471 mSolverCounterUnsat, 1428 mSDtfsCounter, 102624 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3129 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7811 ImplicationChecksByTransitivity, 106.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3940occurred in iteration=225, InterpolantAutomatonStates: 2873, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.4s SatisfiabilityAnalysisTime, 271.6s InterpolantComputationTime, 4620 NumberOfCodeBlocks, 4620 NumberOfCodeBlocksAsserted, 279 NumberOfCheckSat, 4341 ConstructedInterpolants, 0 QuantifiedInterpolants, 223417 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 279 InterpolantComputations, 279 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-28 03:49:42,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE