./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/mix054_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/mix054_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/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i ./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix054_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 03:36:21,153 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-28 03:36:21,233 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-28 03:36:21,240 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-28 03:36:21,240 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-28 03:36:21,269 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-28 03:36:21,269 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-28 03:36:21,270 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-28 03:36:21,270 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-28 03:36:21,274 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-28 03:36:21,274 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-28 03:36:21,275 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-28 03:36:21,276 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-28 03:36:21,277 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-28 03:36:21,277 INFO L153 SettingsManager]: * Use SBE=true [2024-06-28 03:36:21,277 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-28 03:36:21,278 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-28 03:36:21,278 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-28 03:36:21,278 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-28 03:36:21,278 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-28 03:36:21,279 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-28 03:36:21,279 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-28 03:36:21,279 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-28 03:36:21,280 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-28 03:36:21,280 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-28 03:36:21,280 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-28 03:36:21,280 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-28 03:36:21,281 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-28 03:36:21,281 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-28 03:36:21,281 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-28 03:36:21,282 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-28 03:36:21,283 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-28 03:36:21,283 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:36:21,283 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-28 03:36:21,283 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-28 03:36:21,283 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-28 03:36:21,284 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-28 03:36:21,284 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-28 03:36:21,284 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-28 03:36:21,284 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-28 03:36:21,284 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-28 03:36:21,285 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-28 03:36:21,285 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-28 03:36:21,285 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-28 03:36:21,537 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-28 03:36:21,554 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-28 03:36:21,557 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-28 03:36:21,558 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-28 03:36:21,558 INFO L274 PluginConnector]: CDTParser initialized [2024-06-28 03:36:21,559 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 03:36:22,732 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-28 03:36:22,966 INFO L384 CDTParser]: Found 1 translation units. [2024-06-28 03:36:22,966 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 03:36:22,982 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dde3835f2/98b48340568b437a8affc7af23eaa77b/FLAGc97dfb559 [2024-06-28 03:36:22,996 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dde3835f2/98b48340568b437a8affc7af23eaa77b [2024-06-28 03:36:22,998 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-28 03:36:22,999 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-28 03:36:22,999 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/mutex-meet-nonrel/mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.yml/witness.yml [2024-06-28 03:36:23,117 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-28 03:36:23,118 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-28 03:36:23,119 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-28 03:36:23,120 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-28 03:36:23,124 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-28 03:36:23,125 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:36:22" (1/2) ... [2024-06-28 03:36:23,126 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88df057 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:36:23, skipping insertion in model container [2024-06-28 03:36:23,127 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.06 03:36:22" (1/2) ... [2024-06-28 03:36:23,129 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@5e6303ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.06 03:36:23, skipping insertion in model container [2024-06-28 03:36:23,129 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:36:23" (2/2) ... [2024-06-28 03:36:23,129 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@88df057 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:36:23, skipping insertion in model container [2024-06-28 03:36:23,130 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:36:23" (2/2) ... [2024-06-28 03:36:23,130 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-28 03:36:23,193 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-28 03:36:23,194 INFO L97 edCorrectnessWitness]: Location invariant before [L796-L796] (((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 03:36:23,194 INFO L97 edCorrectnessWitness]: Location invariant before [L795-L795] (((((((((((((! multithreaded || (y == 0 || y == 1)) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || x$read_delayed == (_Bool)0)) && (! multithreaded || (((((((((((((0 <= __unbuffered_cnt && x$flush_delayed == (_Bool)0) && x$r_buff0_thd0 == (_Bool)0) && x$r_buff0_thd1 == (_Bool)0) && x$r_buff1_thd0 == (_Bool)0) && x$r_buff1_thd1 == (_Bool)0) && x$read_delayed == (_Bool)0) && x$read_delayed_var == 0) && (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1)) && (x$w_buff0 == 0 || x$w_buff0 == 2)) && (x$w_buff1 == 0 || x$w_buff1 == 2)) && (y == 0 || y == 1)) && ((x == 0 || x == 1) || x == 2)) && ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2)))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || 0 <= __unbuffered_cnt) [2024-06-28 03:36:23,195 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-28 03:36:23,195 INFO L106 edCorrectnessWitness]: ghost_update [L793-L793] multithreaded = 1; [2024-06-28 03:36:23,251 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-28 03:36:23,617 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:36:23,628 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-28 03:36:23,777 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-28 03:36:23,824 INFO L206 MainTranslator]: Completed translation [2024-06-28 03:36:23,824 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:36:23 WrapperNode [2024-06-28 03:36:23,825 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-28 03:36:23,826 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-28 03:36:23,826 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-28 03:36:23,826 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-28 03:36:23,832 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:36:23" (1/1) ... [2024-06-28 03:36:23,845 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:36:23" (1/1) ... [2024-06-28 03:36:23,878 INFO L138 Inliner]: procedures = 174, calls = 34, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 131 [2024-06-28 03:36:23,879 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-28 03:36:23,879 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-28 03:36:23,880 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-28 03:36:23,880 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-28 03:36:23,891 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:36:23" (1/1) ... [2024-06-28 03:36:23,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:36:23" (1/1) ... [2024-06-28 03:36:23,905 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:36:23" (1/1) ... [2024-06-28 03:36:23,934 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 03:36:23,934 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:36:23" (1/1) ... [2024-06-28 03:36:23,935 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:36:23" (1/1) ... [2024-06-28 03:36:23,951 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:36:23" (1/1) ... [2024-06-28 03:36:23,959 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:36:23" (1/1) ... [2024-06-28 03:36:23,961 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:36:23" (1/1) ... [2024-06-28 03:36:23,969 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:36:23" (1/1) ... [2024-06-28 03:36:23,972 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-28 03:36:23,975 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-28 03:36:23,975 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-28 03:36:23,975 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-28 03:36:23,976 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:36:23" (1/1) ... [2024-06-28 03:36:23,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-28 03:36:23,989 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-28 03:36:24,005 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 03:36:24,031 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 03:36:24,049 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-28 03:36:24,049 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-28 03:36:24,049 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-28 03:36:24,050 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-28 03:36:24,050 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-28 03:36:24,050 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-28 03:36:24,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-28 03:36:24,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-28 03:36:24,051 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-28 03:36:24,051 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-28 03:36:24,053 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 03:36:24,208 INFO L244 CfgBuilder]: Building ICFG [2024-06-28 03:36:24,211 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-28 03:36:24,555 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-28 03:36:24,556 INFO L293 CfgBuilder]: Performing block encoding [2024-06-28 03:36:24,735 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-28 03:36:24,738 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-28 03:36:24,740 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:36:24 BoogieIcfgContainer [2024-06-28 03:36:24,741 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-28 03:36:24,742 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-28 03:36:24,744 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-28 03:36:24,746 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-28 03:36:24,746 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.06 03:36:22" (1/4) ... [2024-06-28 03:36:24,746 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128d6df3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.06 03:36:24, skipping insertion in model container [2024-06-28 03:36:24,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 28.06 03:36:23" (2/4) ... [2024-06-28 03:36:24,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128d6df3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:36:24, skipping insertion in model container [2024-06-28 03:36:24,747 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 28.06 03:36:23" (3/4) ... [2024-06-28 03:36:24,747 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128d6df3 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 28.06 03:36:24, skipping insertion in model container [2024-06-28 03:36:24,748 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.06 03:36:24" (4/4) ... [2024-06-28 03:36:24,749 INFO L112 eAbstractionObserver]: Analyzing ICFG mix054_pso.opt_rmo.opt_tso.oepc_tso.opt.i [2024-06-28 03:36:24,762 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-28 03:36:24,763 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-28 03:36:24,763 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-28 03:36:24,805 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-28 03:36:24,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 36 places, 29 transitions, 66 flow [2024-06-28 03:36:24,859 INFO L124 PetriNetUnfolderBase]: 0/27 cut-off events. [2024-06-28 03:36:24,860 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:36:24,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34 conditions, 27 events. 0/27 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 39 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-28 03:36:24,862 INFO L82 GeneralOperation]: Start removeDead. Operand has 36 places, 29 transitions, 66 flow [2024-06-28 03:36:24,865 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 28 places, 21 transitions, 48 flow [2024-06-28 03:36:24,875 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-28 03:36:24,881 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;@229a14c4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-28 03:36:24,882 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-28 03:36:24,885 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-28 03:36:24,886 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-28 03:36:24,886 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-28 03:36:24,886 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:24,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-28 03:36:24,887 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 03:36:24,891 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:24,892 INFO L85 PathProgramCache]: Analyzing trace with hash 324002771, now seen corresponding path program 1 times [2024-06-28 03:36:24,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:24,899 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755186615] [2024-06-28 03:36:24,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:24,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:25,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:25,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:25,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:25,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755186615] [2024-06-28 03:36:25,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755186615] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:25,800 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:25,800 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-28 03:36:25,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955967348] [2024-06-28 03:36:25,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:25,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-28 03:36:25,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:25,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-28 03:36:25,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-28 03:36:25,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 29 [2024-06-28 03:36:25,901 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 21 transitions, 48 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:25,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:25,903 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 29 [2024-06-28 03:36:25,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:26,050 INFO L124 PetriNetUnfolderBase]: 135/261 cut-off events. [2024-06-28 03:36:26,051 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-06-28 03:36:26,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 527 conditions, 261 events. 135/261 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 947 event pairs, 79 based on Foata normal form. 1/254 useless extension candidates. Maximal degree in co-relation 516. Up to 243 conditions per place. [2024-06-28 03:36:26,056 INFO L140 encePairwiseOnDemand]: 24/29 looper letters, 20 selfloop transitions, 3 changer transitions 0/27 dead transitions. [2024-06-28 03:36:26,057 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 109 flow [2024-06-28 03:36:26,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-28 03:36:26,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-28 03:36:26,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2024-06-28 03:36:26,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5632183908045977 [2024-06-28 03:36:26,069 INFO L175 Difference]: Start difference. First operand has 28 places, 21 transitions, 48 flow. Second operand 3 states and 49 transitions. [2024-06-28 03:36:26,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 109 flow [2024-06-28 03:36:26,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 106 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-28 03:36:26,073 INFO L231 Difference]: Finished difference. Result has 29 places, 23 transitions, 67 flow [2024-06-28 03:36:26,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=67, PETRI_PLACES=29, PETRI_TRANSITIONS=23} [2024-06-28 03:36:26,078 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 1 predicate places. [2024-06-28 03:36:26,078 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 23 transitions, 67 flow [2024-06-28 03:36:26,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:26,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:26,079 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:26,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-28 03:36:26,080 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 03:36:26,080 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:26,081 INFO L85 PathProgramCache]: Analyzing trace with hash 2129656104, now seen corresponding path program 1 times [2024-06-28 03:36:26,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:26,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1149354359] [2024-06-28 03:36:26,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:26,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:26,567 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 03:36:26,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:26,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1149354359] [2024-06-28 03:36:26,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1149354359] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:26,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:26,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-28 03:36:26,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287196452] [2024-06-28 03:36:26,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:26,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-28 03:36:26,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:26,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-28 03:36:26,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-28 03:36:26,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 03:36:26,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 23 transitions, 67 flow. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:26,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:26,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 03:36:26,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:26,730 INFO L124 PetriNetUnfolderBase]: 159/291 cut-off events. [2024-06-28 03:36:26,730 INFO L125 PetriNetUnfolderBase]: For 58/58 co-relation queries the response was YES. [2024-06-28 03:36:26,734 INFO L83 FinitePrefix]: Finished finitePrefix Result has 679 conditions, 291 events. 159/291 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 995 event pairs, 79 based on Foata normal form. 2/292 useless extension candidates. Maximal degree in co-relation 667. Up to 274 conditions per place. [2024-06-28 03:36:26,737 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 25 selfloop transitions, 5 changer transitions 0/33 dead transitions. [2024-06-28 03:36:26,737 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 33 transitions, 153 flow [2024-06-28 03:36:26,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-28 03:36:26,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-28 03:36:26,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 60 transitions. [2024-06-28 03:36:26,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5172413793103449 [2024-06-28 03:36:26,741 INFO L175 Difference]: Start difference. First operand has 29 places, 23 transitions, 67 flow. Second operand 4 states and 60 transitions. [2024-06-28 03:36:26,741 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 33 transitions, 153 flow [2024-06-28 03:36:26,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 33 transitions, 150 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-28 03:36:26,745 INFO L231 Difference]: Finished difference. Result has 32 places, 25 transitions, 91 flow [2024-06-28 03:36:26,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=32, PETRI_TRANSITIONS=25} [2024-06-28 03:36:26,746 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 4 predicate places. [2024-06-28 03:36:26,746 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 25 transitions, 91 flow [2024-06-28 03:36:26,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:26,746 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:26,746 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:26,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-28 03:36:26,747 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 03:36:26,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:26,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1594830878, now seen corresponding path program 1 times [2024-06-28 03:36:26,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:26,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717931831] [2024-06-28 03:36:26,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:26,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:27,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:27,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:27,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717931831] [2024-06-28 03:36:27,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717931831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:27,189 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:27,189 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-28 03:36:27,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371589711] [2024-06-28 03:36:27,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:27,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-28 03:36:27,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:27,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-28 03:36:27,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-06-28 03:36:27,223 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 03:36:27,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 25 transitions, 91 flow. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:27,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:27,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 03:36:27,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:27,326 INFO L124 PetriNetUnfolderBase]: 153/281 cut-off events. [2024-06-28 03:36:27,326 INFO L125 PetriNetUnfolderBase]: For 171/171 co-relation queries the response was YES. [2024-06-28 03:36:27,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 728 conditions, 281 events. 153/281 cut-off events. For 171/171 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 948 event pairs, 43 based on Foata normal form. 4/284 useless extension candidates. Maximal degree in co-relation 714. Up to 246 conditions per place. [2024-06-28 03:36:27,328 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 30 selfloop transitions, 7 changer transitions 0/40 dead transitions. [2024-06-28 03:36:27,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 40 transitions, 205 flow [2024-06-28 03:36:27,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:36:27,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:36:27,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 74 transitions. [2024-06-28 03:36:27,330 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5103448275862069 [2024-06-28 03:36:27,330 INFO L175 Difference]: Start difference. First operand has 32 places, 25 transitions, 91 flow. Second operand 5 states and 74 transitions. [2024-06-28 03:36:27,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 40 transitions, 205 flow [2024-06-28 03:36:27,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 40 transitions, 196 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-28 03:36:27,339 INFO L231 Difference]: Finished difference. Result has 35 places, 27 transitions, 115 flow [2024-06-28 03:36:27,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=35, PETRI_TRANSITIONS=27} [2024-06-28 03:36:27,340 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 7 predicate places. [2024-06-28 03:36:27,340 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 27 transitions, 115 flow [2024-06-28 03:36:27,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:27,340 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:27,341 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:27,341 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-28 03:36:27,341 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 03:36:27,341 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:27,342 INFO L85 PathProgramCache]: Analyzing trace with hash -1527310829, now seen corresponding path program 1 times [2024-06-28 03:36:27,342 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:27,342 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712795456] [2024-06-28 03:36:27,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:27,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:27,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:28,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:28,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:28,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712795456] [2024-06-28 03:36:28,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712795456] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:28,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:28,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:36:28,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449993701] [2024-06-28 03:36:28,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:28,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:36:28,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:28,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:36:28,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:36:28,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 29 [2024-06-28 03:36:28,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 27 transitions, 115 flow. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 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 03:36:28,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:28,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 29 [2024-06-28 03:36:28,176 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:28,329 INFO L124 PetriNetUnfolderBase]: 149/273 cut-off events. [2024-06-28 03:36:28,330 INFO L125 PetriNetUnfolderBase]: For 269/269 co-relation queries the response was YES. [2024-06-28 03:36:28,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 273 events. 149/273 cut-off events. For 269/269 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 906 event pairs, 24 based on Foata normal form. 4/276 useless extension candidates. Maximal degree in co-relation 756. Up to 220 conditions per place. [2024-06-28 03:36:28,332 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 30 selfloop transitions, 8 changer transitions 0/41 dead transitions. [2024-06-28 03:36:28,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 41 transitions, 219 flow [2024-06-28 03:36:28,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:36:28,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:36:28,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 82 transitions. [2024-06-28 03:36:28,334 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47126436781609193 [2024-06-28 03:36:28,334 INFO L175 Difference]: Start difference. First operand has 35 places, 27 transitions, 115 flow. Second operand 6 states and 82 transitions. [2024-06-28 03:36:28,334 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 41 transitions, 219 flow [2024-06-28 03:36:28,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 41 transitions, 204 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-28 03:36:28,337 INFO L231 Difference]: Finished difference. Result has 37 places, 26 transitions, 112 flow [2024-06-28 03:36:28,337 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=112, PETRI_PLACES=37, PETRI_TRANSITIONS=26} [2024-06-28 03:36:28,338 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 9 predicate places. [2024-06-28 03:36:28,338 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 26 transitions, 112 flow [2024-06-28 03:36:28,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 7 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 03:36:28,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:28,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:28,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-28 03:36:28,339 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 03:36:28,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:28,340 INFO L85 PathProgramCache]: Analyzing trace with hash 2119854161, now seen corresponding path program 1 times [2024-06-28 03:36:28,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:28,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798875217] [2024-06-28 03:36:28,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:28,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:28,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:28,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:28,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:28,863 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [798875217] [2024-06-28 03:36:28,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [798875217] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:28,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:28,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-28 03:36:28,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816530430] [2024-06-28 03:36:28,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:28,864 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-28 03:36:28,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:28,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-28 03:36:28,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-28 03:36:28,901 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 29 [2024-06-28 03:36:28,902 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 26 transitions, 112 flow. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:28,902 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:28,902 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 29 [2024-06-28 03:36:28,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:29,034 INFO L124 PetriNetUnfolderBase]: 120/237 cut-off events. [2024-06-28 03:36:29,035 INFO L125 PetriNetUnfolderBase]: For 308/308 co-relation queries the response was YES. [2024-06-28 03:36:29,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 686 conditions, 237 events. 120/237 cut-off events. For 308/308 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 819 event pairs, 41 based on Foata normal form. 1/237 useless extension candidates. Maximal degree in co-relation 669. Up to 214 conditions per place. [2024-06-28 03:36:29,038 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 24 selfloop transitions, 6 changer transitions 0/33 dead transitions. [2024-06-28 03:36:29,038 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 33 transitions, 190 flow [2024-06-28 03:36:29,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-28 03:36:29,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-28 03:36:29,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 57 transitions. [2024-06-28 03:36:29,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3931034482758621 [2024-06-28 03:36:29,040 INFO L175 Difference]: Start difference. First operand has 37 places, 26 transitions, 112 flow. Second operand 5 states and 57 transitions. [2024-06-28 03:36:29,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 33 transitions, 190 flow [2024-06-28 03:36:29,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 33 transitions, 170 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-28 03:36:29,045 INFO L231 Difference]: Finished difference. Result has 38 places, 28 transitions, 119 flow [2024-06-28 03:36:29,046 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=119, PETRI_PLACES=38, PETRI_TRANSITIONS=28} [2024-06-28 03:36:29,051 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 10 predicate places. [2024-06-28 03:36:29,051 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 28 transitions, 119 flow [2024-06-28 03:36:29,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:29,051 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:29,051 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:29,052 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-28 03:36:29,053 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 03:36:29,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:29,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1365163602, now seen corresponding path program 1 times [2024-06-28 03:36:29,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:29,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [547505711] [2024-06-28 03:36:29,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:29,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:29,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:29,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:29,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:29,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [547505711] [2024-06-28 03:36:29,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [547505711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:29,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:29,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:36:29,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188024041] [2024-06-28 03:36:29,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:29,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:36:29,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:29,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:36:29,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:36:29,603 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:29,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 28 transitions, 119 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:29,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:29,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:29,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:29,788 INFO L124 PetriNetUnfolderBase]: 148/272 cut-off events. [2024-06-28 03:36:29,789 INFO L125 PetriNetUnfolderBase]: For 463/463 co-relation queries the response was YES. [2024-06-28 03:36:29,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 837 conditions, 272 events. 148/272 cut-off events. For 463/463 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 905 event pairs, 51 based on Foata normal form. 1/272 useless extension candidates. Maximal degree in co-relation 818. Up to 252 conditions per place. [2024-06-28 03:36:29,791 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 29 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2024-06-28 03:36:29,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 39 transitions, 221 flow [2024-06-28 03:36:29,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:36:29,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:36:29,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-28 03:36:29,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367816091954023 [2024-06-28 03:36:29,793 INFO L175 Difference]: Start difference. First operand has 38 places, 28 transitions, 119 flow. Second operand 6 states and 64 transitions. [2024-06-28 03:36:29,793 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 39 transitions, 221 flow [2024-06-28 03:36:29,794 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 39 transitions, 210 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-28 03:36:29,795 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 139 flow [2024-06-28 03:36:29,795 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=139, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2024-06-28 03:36:29,796 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 13 predicate places. [2024-06-28 03:36:29,796 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 139 flow [2024-06-28 03:36:29,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:29,796 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:29,796 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:29,796 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-28 03:36:29,797 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 03:36:29,797 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:29,797 INFO L85 PathProgramCache]: Analyzing trace with hash 1365370992, now seen corresponding path program 2 times [2024-06-28 03:36:29,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:29,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752512502] [2024-06-28 03:36:29,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:29,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:29,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:30,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:30,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:30,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752512502] [2024-06-28 03:36:30,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752512502] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:30,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:30,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-28 03:36:30,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304637928] [2024-06-28 03:36:30,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:30,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-28 03:36:30,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:30,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-28 03:36:30,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-28 03:36:30,371 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:30,372 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 30 transitions, 139 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:30,372 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:30,372 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:30,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:30,485 INFO L124 PetriNetUnfolderBase]: 146/270 cut-off events. [2024-06-28 03:36:30,486 INFO L125 PetriNetUnfolderBase]: For 635/638 co-relation queries the response was YES. [2024-06-28 03:36:30,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 891 conditions, 270 events. 146/270 cut-off events. For 635/638 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 899 event pairs, 55 based on Foata normal form. 3/271 useless extension candidates. Maximal degree in co-relation 871. Up to 243 conditions per place. [2024-06-28 03:36:30,489 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 27 selfloop transitions, 11 changer transitions 0/40 dead transitions. [2024-06-28 03:36:30,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 40 transitions, 247 flow [2024-06-28 03:36:30,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-28 03:36:30,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-28 03:36:30,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 63 transitions. [2024-06-28 03:36:30,490 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3620689655172414 [2024-06-28 03:36:30,490 INFO L175 Difference]: Start difference. First operand has 41 places, 30 transitions, 139 flow. Second operand 6 states and 63 transitions. [2024-06-28 03:36:30,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 40 transitions, 247 flow [2024-06-28 03:36:30,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 40 transitions, 232 flow, removed 1 selfloop flow, removed 4 redundant places. [2024-06-28 03:36:30,493 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 181 flow [2024-06-28 03:36:30,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=181, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2024-06-28 03:36:30,494 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 16 predicate places. [2024-06-28 03:36:30,495 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 181 flow [2024-06-28 03:36:30,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:30,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:30,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:30,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-28 03:36:30,496 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 03:36:30,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:30,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1864080268, now seen corresponding path program 1 times [2024-06-28 03:36:30,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:30,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85737551] [2024-06-28 03:36:30,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:30,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:30,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:31,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:31,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:31,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85737551] [2024-06-28 03:36:31,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85737551] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:31,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:31,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:36:31,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080926704] [2024-06-28 03:36:31,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:31,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:36:31,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:31,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:36:31,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:36:31,200 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:31,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 181 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 03:36:31,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:31,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:31,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:31,335 INFO L124 PetriNetUnfolderBase]: 144/266 cut-off events. [2024-06-28 03:36:31,336 INFO L125 PetriNetUnfolderBase]: For 810/810 co-relation queries the response was YES. [2024-06-28 03:36:31,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 945 conditions, 266 events. 144/266 cut-off events. For 810/810 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 881 event pairs, 50 based on Foata normal form. 1/266 useless extension candidates. Maximal degree in co-relation 923. Up to 249 conditions per place. [2024-06-28 03:36:31,338 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 31 selfloop transitions, 10 changer transitions 0/43 dead transitions. [2024-06-28 03:36:31,338 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 43 transitions, 287 flow [2024-06-28 03:36:31,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:36:31,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:36:31,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 69 transitions. [2024-06-28 03:36:31,339 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3399014778325123 [2024-06-28 03:36:31,339 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 181 flow. Second operand 7 states and 69 transitions. [2024-06-28 03:36:31,339 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 43 transitions, 287 flow [2024-06-28 03:36:31,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 43 transitions, 275 flow, removed 3 selfloop flow, removed 2 redundant places. [2024-06-28 03:36:31,342 INFO L231 Difference]: Finished difference. Result has 49 places, 36 transitions, 206 flow [2024-06-28 03:36:31,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=169, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=206, PETRI_PLACES=49, PETRI_TRANSITIONS=36} [2024-06-28 03:36:31,342 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 21 predicate places. [2024-06-28 03:36:31,343 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 36 transitions, 206 flow [2024-06-28 03:36:31,343 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 03:36:31,343 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:31,343 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:31,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-28 03:36:31,344 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 03:36:31,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:31,344 INFO L85 PathProgramCache]: Analyzing trace with hash 2100362180, now seen corresponding path program 1 times [2024-06-28 03:36:31,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:31,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749856819] [2024-06-28 03:36:31,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:31,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:31,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:31,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:31,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:31,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749856819] [2024-06-28 03:36:31,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749856819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:31,867 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:31,867 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:36:31,867 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027826559] [2024-06-28 03:36:31,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:31,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:36:31,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:31,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:36:31,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:36:31,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:31,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 36 transitions, 206 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 03:36:31,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:31,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:31,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:32,158 INFO L124 PetriNetUnfolderBase]: 150/276 cut-off events. [2024-06-28 03:36:32,158 INFO L125 PetriNetUnfolderBase]: For 1013/1013 co-relation queries the response was YES. [2024-06-28 03:36:32,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1041 conditions, 276 events. 150/276 cut-off events. For 1013/1013 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 924 event pairs, 34 based on Foata normal form. 2/277 useless extension candidates. Maximal degree in co-relation 1017. Up to 235 conditions per place. [2024-06-28 03:36:32,161 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 40 selfloop transitions, 12 changer transitions 0/54 dead transitions. [2024-06-28 03:36:32,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 54 transitions, 360 flow [2024-06-28 03:36:32,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:36:32,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:36:32,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-06-28 03:36:32,163 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 03:36:32,163 INFO L175 Difference]: Start difference. First operand has 49 places, 36 transitions, 206 flow. Second operand 7 states and 77 transitions. [2024-06-28 03:36:32,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 54 transitions, 360 flow [2024-06-28 03:36:32,165 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 54 transitions, 325 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:32,166 INFO L231 Difference]: Finished difference. Result has 51 places, 40 transitions, 225 flow [2024-06-28 03:36:32,167 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=171, 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=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=225, PETRI_PLACES=51, PETRI_TRANSITIONS=40} [2024-06-28 03:36:32,167 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 23 predicate places. [2024-06-28 03:36:32,167 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 40 transitions, 225 flow [2024-06-28 03:36:32,168 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 03:36:32,168 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:32,168 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:32,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-28 03:36:32,168 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 03:36:32,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:32,169 INFO L85 PathProgramCache]: Analyzing trace with hash -800303024, now seen corresponding path program 2 times [2024-06-28 03:36:32,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:32,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636966997] [2024-06-28 03:36:32,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:32,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:32,719 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 03:36:32,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:32,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636966997] [2024-06-28 03:36:32,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636966997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:32,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:32,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:36:32,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697624516] [2024-06-28 03:36:32,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:32,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:36:32,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:32,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:36:32,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:36:32,762 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:32,763 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 40 transitions, 225 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 03:36:32,763 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:32,763 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:32,763 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:32,957 INFO L124 PetriNetUnfolderBase]: 161/294 cut-off events. [2024-06-28 03:36:32,958 INFO L125 PetriNetUnfolderBase]: For 1334/1334 co-relation queries the response was YES. [2024-06-28 03:36:32,959 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1202 conditions, 294 events. 161/294 cut-off events. For 1334/1334 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1006 event pairs, 34 based on Foata normal form. 2/295 useless extension candidates. Maximal degree in co-relation 1177. Up to 240 conditions per place. [2024-06-28 03:36:32,960 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 39 selfloop transitions, 16 changer transitions 0/57 dead transitions. [2024-06-28 03:36:32,960 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 57 transitions, 415 flow [2024-06-28 03:36:32,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:36:32,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:36:32,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-28 03:36:32,962 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3842364532019704 [2024-06-28 03:36:32,962 INFO L175 Difference]: Start difference. First operand has 51 places, 40 transitions, 225 flow. Second operand 7 states and 78 transitions. [2024-06-28 03:36:32,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 57 transitions, 415 flow [2024-06-28 03:36:32,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 57 transitions, 397 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-06-28 03:36:32,965 INFO L231 Difference]: Finished difference. Result has 55 places, 44 transitions, 276 flow [2024-06-28 03:36:32,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=207, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=276, PETRI_PLACES=55, PETRI_TRANSITIONS=44} [2024-06-28 03:36:32,966 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 27 predicate places. [2024-06-28 03:36:32,966 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 44 transitions, 276 flow [2024-06-28 03:36:32,966 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 03:36:32,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:32,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:32,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-28 03:36:32,967 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 03:36:32,967 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:32,967 INFO L85 PathProgramCache]: Analyzing trace with hash -800302838, now seen corresponding path program 1 times [2024-06-28 03:36:32,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:32,968 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701119908] [2024-06-28 03:36:32,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:32,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:33,497 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 03:36:33,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:33,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701119908] [2024-06-28 03:36:33,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701119908] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:33,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:33,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:36:33,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264176952] [2024-06-28 03:36:33,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:33,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:36:33,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:33,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:36:33,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:36:33,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:33,554 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 44 transitions, 276 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 03:36:33,554 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:33,554 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:33,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:33,711 INFO L124 PetriNetUnfolderBase]: 164/299 cut-off events. [2024-06-28 03:36:33,711 INFO L125 PetriNetUnfolderBase]: For 1629/1629 co-relation queries the response was YES. [2024-06-28 03:36:33,712 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1294 conditions, 299 events. 164/299 cut-off events. For 1629/1629 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1013 event pairs, 34 based on Foata normal form. 1/299 useless extension candidates. Maximal degree in co-relation 1268. Up to 276 conditions per place. [2024-06-28 03:36:33,714 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 44 selfloop transitions, 10 changer transitions 0/56 dead transitions. [2024-06-28 03:36:33,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 56 transitions, 420 flow [2024-06-28 03:36:33,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:36:33,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:36:33,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-28 03:36:33,715 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35467980295566504 [2024-06-28 03:36:33,715 INFO L175 Difference]: Start difference. First operand has 55 places, 44 transitions, 276 flow. Second operand 7 states and 72 transitions. [2024-06-28 03:36:33,715 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 56 transitions, 420 flow [2024-06-28 03:36:33,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 56 transitions, 400 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-06-28 03:36:33,719 INFO L231 Difference]: Finished difference. Result has 59 places, 46 transitions, 297 flow [2024-06-28 03:36:33,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=256, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=297, PETRI_PLACES=59, PETRI_TRANSITIONS=46} [2024-06-28 03:36:33,720 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 31 predicate places. [2024-06-28 03:36:33,720 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 46 transitions, 297 flow [2024-06-28 03:36:33,720 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 03:36:33,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:33,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:33,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-28 03:36:33,721 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 03:36:33,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:33,721 INFO L85 PathProgramCache]: Analyzing trace with hash -623171504, now seen corresponding path program 3 times [2024-06-28 03:36:33,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:33,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10834064] [2024-06-28 03:36:33,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:33,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:33,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:34,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:34,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:34,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10834064] [2024-06-28 03:36:34,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10834064] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:34,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:34,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:36:34,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913601111] [2024-06-28 03:36:34,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:34,246 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:36:34,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:34,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:36:34,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:36:34,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:34,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 297 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 03:36:34,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:34,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:34,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:34,470 INFO L124 PetriNetUnfolderBase]: 160/295 cut-off events. [2024-06-28 03:36:34,471 INFO L125 PetriNetUnfolderBase]: For 1888/1891 co-relation queries the response was YES. [2024-06-28 03:36:34,471 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1311 conditions, 295 events. 160/295 cut-off events. For 1888/1891 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1002 event pairs, 44 based on Foata normal form. 2/294 useless extension candidates. Maximal degree in co-relation 1283. Up to 227 conditions per place. [2024-06-28 03:36:34,473 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 36 selfloop transitions, 20 changer transitions 0/58 dead transitions. [2024-06-28 03:36:34,473 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 58 transitions, 475 flow [2024-06-28 03:36:34,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:36:34,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:36:34,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-06-28 03:36:34,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 03:36:34,475 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 297 flow. Second operand 7 states and 77 transitions. [2024-06-28 03:36:34,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 58 transitions, 475 flow [2024-06-28 03:36:34,478 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 58 transitions, 450 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:36:34,479 INFO L231 Difference]: Finished difference. Result has 61 places, 48 transitions, 339 flow [2024-06-28 03:36:34,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=272, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=339, PETRI_PLACES=61, PETRI_TRANSITIONS=48} [2024-06-28 03:36:34,480 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 33 predicate places. [2024-06-28 03:36:34,480 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 48 transitions, 339 flow [2024-06-28 03:36:34,480 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 03:36:34,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:34,480 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:34,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-28 03:36:34,480 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 03:36:34,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:34,481 INFO L85 PathProgramCache]: Analyzing trace with hash -623171318, now seen corresponding path program 2 times [2024-06-28 03:36:34,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:34,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352083473] [2024-06-28 03:36:34,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:34,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:34,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:34,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:34,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352083473] [2024-06-28 03:36:34,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352083473] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:34,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:34,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:36:34,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042064524] [2024-06-28 03:36:34,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:34,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:36:34,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:34,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:36:34,983 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:36:35,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:35,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 339 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 03:36:35,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:35,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:35,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:35,167 INFO L124 PetriNetUnfolderBase]: 163/299 cut-off events. [2024-06-28 03:36:35,168 INFO L125 PetriNetUnfolderBase]: For 2157/2163 co-relation queries the response was YES. [2024-06-28 03:36:35,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1401 conditions, 299 events. 163/299 cut-off events. For 2157/2163 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1025 event pairs, 37 based on Foata normal form. 5/302 useless extension candidates. Maximal degree in co-relation 1372. Up to 259 conditions per place. [2024-06-28 03:36:35,170 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 41 selfloop transitions, 17 changer transitions 0/60 dead transitions. [2024-06-28 03:36:35,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 60 transitions, 529 flow [2024-06-28 03:36:35,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:36:35,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:36:35,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 74 transitions. [2024-06-28 03:36:35,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645320197044335 [2024-06-28 03:36:35,171 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 339 flow. Second operand 7 states and 74 transitions. [2024-06-28 03:36:35,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 60 transitions, 529 flow [2024-06-28 03:36:35,175 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 478 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 03:36:35,176 INFO L231 Difference]: Finished difference. Result has 63 places, 52 transitions, 363 flow [2024-06-28 03:36:35,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=288, 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=363, PETRI_PLACES=63, PETRI_TRANSITIONS=52} [2024-06-28 03:36:35,177 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 35 predicate places. [2024-06-28 03:36:35,177 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 52 transitions, 363 flow [2024-06-28 03:36:35,177 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 03:36:35,177 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:35,177 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:35,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-28 03:36:35,178 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 03:36:35,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:35,178 INFO L85 PathProgramCache]: Analyzing trace with hash -622934168, now seen corresponding path program 3 times [2024-06-28 03:36:35,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:35,178 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209601753] [2024-06-28 03:36:35,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:35,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:35,739 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 03:36:35,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:35,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209601753] [2024-06-28 03:36:35,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209601753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:35,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:35,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-28 03:36:35,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573829529] [2024-06-28 03:36:35,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:35,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-28 03:36:35,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:35,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-28 03:36:35,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-28 03:36:35,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:35,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 52 transitions, 363 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 03:36:35,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:35,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:35,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:35,987 INFO L124 PetriNetUnfolderBase]: 161/298 cut-off events. [2024-06-28 03:36:35,987 INFO L125 PetriNetUnfolderBase]: For 2407/2407 co-relation queries the response was YES. [2024-06-28 03:36:35,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1395 conditions, 298 events. 161/298 cut-off events. For 2407/2407 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1019 event pairs, 73 based on Foata normal form. 1/298 useless extension candidates. Maximal degree in co-relation 1365. Up to 278 conditions per place. [2024-06-28 03:36:35,990 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 46 selfloop transitions, 12 changer transitions 0/60 dead transitions. [2024-06-28 03:36:35,990 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 60 transitions, 502 flow [2024-06-28 03:36:35,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:35,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:35,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 75 transitions. [2024-06-28 03:36:35,991 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3232758620689655 [2024-06-28 03:36:35,991 INFO L175 Difference]: Start difference. First operand has 63 places, 52 transitions, 363 flow. Second operand 8 states and 75 transitions. [2024-06-28 03:36:35,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 60 transitions, 502 flow [2024-06-28 03:36:35,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 60 transitions, 466 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-28 03:36:35,997 INFO L231 Difference]: Finished difference. Result has 69 places, 54 transitions, 370 flow [2024-06-28 03:36:35,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=327, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=370, PETRI_PLACES=69, PETRI_TRANSITIONS=54} [2024-06-28 03:36:35,998 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 41 predicate places. [2024-06-28 03:36:35,998 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 54 transitions, 370 flow [2024-06-28 03:36:35,998 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 03:36:35,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:35,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:35,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-28 03:36:35,999 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 03:36:35,999 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:35,999 INFO L85 PathProgramCache]: Analyzing trace with hash 1951914412, now seen corresponding path program 1 times [2024-06-28 03:36:35,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:35,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787623228] [2024-06-28 03:36:35,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:36,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:36,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:36,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:36,706 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:36,706 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787623228] [2024-06-28 03:36:36,706 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787623228] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:36,706 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:36,706 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:36,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2831489] [2024-06-28 03:36:36,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:36,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:36,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:36,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:36,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:36,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:36,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 54 transitions, 370 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 03:36:36,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:36,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:36,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:36,944 INFO L124 PetriNetUnfolderBase]: 158/293 cut-off events. [2024-06-28 03:36:36,944 INFO L125 PetriNetUnfolderBase]: For 2610/2610 co-relation queries the response was YES. [2024-06-28 03:36:36,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1384 conditions, 293 events. 158/293 cut-off events. For 2610/2610 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 983 event pairs, 72 based on Foata normal form. 2/294 useless extension candidates. Maximal degree in co-relation 1351. Up to 267 conditions per place. [2024-06-28 03:36:36,946 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 48 selfloop transitions, 12 changer transitions 0/62 dead transitions. [2024-06-28 03:36:36,946 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 62 transitions, 508 flow [2024-06-28 03:36:36,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:36,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:36,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 76 transitions. [2024-06-28 03:36:36,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3275862068965517 [2024-06-28 03:36:36,948 INFO L175 Difference]: Start difference. First operand has 69 places, 54 transitions, 370 flow. Second operand 8 states and 76 transitions. [2024-06-28 03:36:36,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 62 transitions, 508 flow [2024-06-28 03:36:36,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 62 transitions, 481 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:36,954 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 371 flow [2024-06-28 03:36:36,955 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=371, PETRI_PLACES=71, PETRI_TRANSITIONS=54} [2024-06-28 03:36:36,956 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 43 predicate places. [2024-06-28 03:36:36,956 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 371 flow [2024-06-28 03:36:36,956 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 03:36:36,956 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:36,956 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:36,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-28 03:36:36,957 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 03:36:36,957 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:36,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1456218187, now seen corresponding path program 1 times [2024-06-28 03:36:36,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:36,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904415580] [2024-06-28 03:36:36,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:36,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:36,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:37,768 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 03:36:37,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:37,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904415580] [2024-06-28 03:36:37,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904415580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:37,768 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:37,769 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:37,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782261915] [2024-06-28 03:36:37,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:37,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:37,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:37,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:37,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:37,839 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:37,839 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 54 transitions, 371 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 03:36:37,839 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:37,839 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:37,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:38,087 INFO L124 PetriNetUnfolderBase]: 175/322 cut-off events. [2024-06-28 03:36:38,087 INFO L125 PetriNetUnfolderBase]: For 2814/2818 co-relation queries the response was YES. [2024-06-28 03:36:38,088 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1528 conditions, 322 events. 175/322 cut-off events. For 2814/2818 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1136 event pairs, 32 based on Foata normal form. 5/326 useless extension candidates. Maximal degree in co-relation 1494. Up to 268 conditions per place. [2024-06-28 03:36:38,090 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 57 selfloop transitions, 18 changer transitions 0/77 dead transitions. [2024-06-28 03:36:38,090 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 77 transitions, 623 flow [2024-06-28 03:36:38,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:38,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:38,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-28 03:36:38,092 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-28 03:36:38,092 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 371 flow. Second operand 8 states and 87 transitions. [2024-06-28 03:36:38,092 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 77 transitions, 623 flow [2024-06-28 03:36:38,097 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 77 transitions, 595 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:38,099 INFO L231 Difference]: Finished difference. Result has 74 places, 62 transitions, 459 flow [2024-06-28 03:36:38,099 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=343, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=459, PETRI_PLACES=74, PETRI_TRANSITIONS=62} [2024-06-28 03:36:38,099 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 46 predicate places. [2024-06-28 03:36:38,099 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 62 transitions, 459 flow [2024-06-28 03:36:38,100 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 03:36:38,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:38,100 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:38,100 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-28 03:36:38,100 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 03:36:38,101 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:38,101 INFO L85 PathProgramCache]: Analyzing trace with hash -2013658821, now seen corresponding path program 2 times [2024-06-28 03:36:38,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:38,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827438919] [2024-06-28 03:36:38,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:38,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:38,900 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 03:36:38,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:38,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827438919] [2024-06-28 03:36:38,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [827438919] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:38,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:38,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:38,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136991318] [2024-06-28 03:36:38,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:38,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:38,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:38,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:38,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:38,967 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:38,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 62 transitions, 459 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 03:36:38,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:38,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:38,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:39,215 INFO L124 PetriNetUnfolderBase]: 196/358 cut-off events. [2024-06-28 03:36:39,216 INFO L125 PetriNetUnfolderBase]: For 3288/3288 co-relation queries the response was YES. [2024-06-28 03:36:39,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1780 conditions, 358 events. 196/358 cut-off events. For 3288/3288 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1303 event pairs, 31 based on Foata normal form. 1/358 useless extension candidates. Maximal degree in co-relation 1744. Up to 292 conditions per place. [2024-06-28 03:36:39,219 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 61 selfloop transitions, 23 changer transitions 0/86 dead transitions. [2024-06-28 03:36:39,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 86 transitions, 771 flow [2024-06-28 03:36:39,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:39,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:39,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-28 03:36:39,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 03:36:39,220 INFO L175 Difference]: Start difference. First operand has 74 places, 62 transitions, 459 flow. Second operand 8 states and 88 transitions. [2024-06-28 03:36:39,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 86 transitions, 771 flow [2024-06-28 03:36:39,228 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 86 transitions, 725 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-28 03:36:39,229 INFO L231 Difference]: Finished difference. Result has 79 places, 72 transitions, 594 flow [2024-06-28 03:36:39,229 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=423, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=594, PETRI_PLACES=79, PETRI_TRANSITIONS=72} [2024-06-28 03:36:39,230 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 51 predicate places. [2024-06-28 03:36:39,230 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 72 transitions, 594 flow [2024-06-28 03:36:39,230 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 03:36:39,230 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:39,231 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:39,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-28 03:36:39,231 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 03:36:39,231 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:39,231 INFO L85 PathProgramCache]: Analyzing trace with hash 1719422292, now seen corresponding path program 1 times [2024-06-28 03:36:39,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:39,232 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925216794] [2024-06-28 03:36:39,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:39,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:39,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:39,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:39,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:39,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925216794] [2024-06-28 03:36:39,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925216794] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:39,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:39,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:39,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556061622] [2024-06-28 03:36:39,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:39,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:39,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:39,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:39,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:39,820 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:39,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 72 transitions, 594 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 03:36:39,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:39,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:39,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:40,003 INFO L124 PetriNetUnfolderBase]: 202/369 cut-off events. [2024-06-28 03:36:40,003 INFO L125 PetriNetUnfolderBase]: For 3899/3899 co-relation queries the response was YES. [2024-06-28 03:36:40,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1897 conditions, 369 events. 202/369 cut-off events. For 3899/3899 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1368 event pairs, 35 based on Foata normal form. 2/370 useless extension candidates. Maximal degree in co-relation 1858. Up to 297 conditions per place. [2024-06-28 03:36:40,007 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 64 selfloop transitions, 25 changer transitions 0/91 dead transitions. [2024-06-28 03:36:40,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 91 transitions, 846 flow [2024-06-28 03:36:40,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:40,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:40,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 03:36:40,009 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36398467432950193 [2024-06-28 03:36:40,009 INFO L175 Difference]: Start difference. First operand has 79 places, 72 transitions, 594 flow. Second operand 9 states and 95 transitions. [2024-06-28 03:36:40,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 91 transitions, 846 flow [2024-06-28 03:36:40,017 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 91 transitions, 809 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-28 03:36:40,019 INFO L231 Difference]: Finished difference. Result has 86 places, 76 transitions, 656 flow [2024-06-28 03:36:40,019 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=557, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=656, PETRI_PLACES=86, PETRI_TRANSITIONS=76} [2024-06-28 03:36:40,019 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 58 predicate places. [2024-06-28 03:36:40,020 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 76 transitions, 656 flow [2024-06-28 03:36:40,020 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 03:36:40,020 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:40,020 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:40,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-28 03:36:40,020 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 03:36:40,021 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:40,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1511292196, now seen corresponding path program 2 times [2024-06-28 03:36:40,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:40,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922385850] [2024-06-28 03:36:40,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:40,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:40,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:40,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:40,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:40,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922385850] [2024-06-28 03:36:40,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922385850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:40,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:40,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:40,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593077999] [2024-06-28 03:36:40,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:40,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:40,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:40,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:40,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:40,608 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:40,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 76 transitions, 656 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 03:36:40,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:40,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:40,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:40,839 INFO L124 PetriNetUnfolderBase]: 208/379 cut-off events. [2024-06-28 03:36:40,839 INFO L125 PetriNetUnfolderBase]: For 4491/4491 co-relation queries the response was YES. [2024-06-28 03:36:40,841 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2027 conditions, 379 events. 208/379 cut-off events. For 4491/4491 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1414 event pairs, 35 based on Foata normal form. 2/380 useless extension candidates. Maximal degree in co-relation 1986. Up to 307 conditions per place. [2024-06-28 03:36:40,843 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 66 selfloop transitions, 25 changer transitions 0/93 dead transitions. [2024-06-28 03:36:40,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 93 transitions, 908 flow [2024-06-28 03:36:40,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:40,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:40,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:36:40,844 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367816091954023 [2024-06-28 03:36:40,844 INFO L175 Difference]: Start difference. First operand has 86 places, 76 transitions, 656 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:36:40,844 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 93 transitions, 908 flow [2024-06-28 03:36:40,854 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 93 transitions, 850 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-28 03:36:40,856 INFO L231 Difference]: Finished difference. Result has 91 places, 79 transitions, 692 flow [2024-06-28 03:36:40,856 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=600, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=692, PETRI_PLACES=91, PETRI_TRANSITIONS=79} [2024-06-28 03:36:40,856 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 63 predicate places. [2024-06-28 03:36:40,856 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 79 transitions, 692 flow [2024-06-28 03:36:40,857 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 03:36:40,857 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:40,857 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:40,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-28 03:36:40,857 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 03:36:40,857 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:40,857 INFO L85 PathProgramCache]: Analyzing trace with hash -1511148046, now seen corresponding path program 3 times [2024-06-28 03:36:40,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:40,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397852946] [2024-06-28 03:36:40,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:40,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:40,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:41,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:41,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:41,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397852946] [2024-06-28 03:36:41,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397852946] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:41,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:41,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:41,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199863070] [2024-06-28 03:36:41,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:41,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:41,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:41,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:41,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:41,449 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:41,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 79 transitions, 692 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 03:36:41,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:41,450 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:41,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:41,708 INFO L124 PetriNetUnfolderBase]: 266/473 cut-off events. [2024-06-28 03:36:41,708 INFO L125 PetriNetUnfolderBase]: For 6546/6546 co-relation queries the response was YES. [2024-06-28 03:36:41,710 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2635 conditions, 473 events. 266/473 cut-off events. For 6546/6546 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1869 event pairs, 38 based on Foata normal form. 2/474 useless extension candidates. Maximal degree in co-relation 2592. Up to 304 conditions per place. [2024-06-28 03:36:41,713 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 71 selfloop transitions, 37 changer transitions 0/110 dead transitions. [2024-06-28 03:36:41,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 110 transitions, 1164 flow [2024-06-28 03:36:41,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:41,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:41,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 03:36:41,716 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946360153256705 [2024-06-28 03:36:41,716 INFO L175 Difference]: Start difference. First operand has 91 places, 79 transitions, 692 flow. Second operand 9 states and 103 transitions. [2024-06-28 03:36:41,716 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 110 transitions, 1164 flow [2024-06-28 03:36:41,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 110 transitions, 1116 flow, removed 9 selfloop flow, removed 4 redundant places. [2024-06-28 03:36:41,736 INFO L231 Difference]: Finished difference. Result has 98 places, 91 transitions, 877 flow [2024-06-28 03:36:41,736 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=644, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=877, PETRI_PLACES=98, PETRI_TRANSITIONS=91} [2024-06-28 03:36:41,737 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 70 predicate places. [2024-06-28 03:36:41,737 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 91 transitions, 877 flow [2024-06-28 03:36:41,737 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 03:36:41,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:41,737 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:41,737 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-28 03:36:41,738 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 03:36:41,738 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:41,738 INFO L85 PathProgramCache]: Analyzing trace with hash -2009843806, now seen corresponding path program 4 times [2024-06-28 03:36:41,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:41,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386434134] [2024-06-28 03:36:41,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:41,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:41,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:42,247 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:42,247 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:42,247 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386434134] [2024-06-28 03:36:42,247 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386434134] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:42,247 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:42,248 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:42,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598926633] [2024-06-28 03:36:42,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:42,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:42,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:42,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:42,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:42,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:42,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 91 transitions, 877 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 03:36:42,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:42,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:42,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:42,565 INFO L124 PetriNetUnfolderBase]: 260/465 cut-off events. [2024-06-28 03:36:42,566 INFO L125 PetriNetUnfolderBase]: For 7208/7208 co-relation queries the response was YES. [2024-06-28 03:36:42,568 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2724 conditions, 465 events. 260/465 cut-off events. For 7208/7208 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1836 event pairs, 32 based on Foata normal form. 4/468 useless extension candidates. Maximal degree in co-relation 2678. Up to 303 conditions per place. [2024-06-28 03:36:42,571 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 67 selfloop transitions, 40 changer transitions 0/109 dead transitions. [2024-06-28 03:36:42,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 109 transitions, 1203 flow [2024-06-28 03:36:42,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:42,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:42,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 03:36:42,573 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38697318007662834 [2024-06-28 03:36:42,573 INFO L175 Difference]: Start difference. First operand has 98 places, 91 transitions, 877 flow. Second operand 9 states and 101 transitions. [2024-06-28 03:36:42,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 109 transitions, 1203 flow [2024-06-28 03:36:42,591 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 109 transitions, 1134 flow, removed 22 selfloop flow, removed 4 redundant places. [2024-06-28 03:36:42,593 INFO L231 Difference]: Finished difference. Result has 104 places, 92 transitions, 922 flow [2024-06-28 03:36:42,593 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=922, PETRI_PLACES=104, PETRI_TRANSITIONS=92} [2024-06-28 03:36:42,594 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 76 predicate places. [2024-06-28 03:36:42,594 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 92 transitions, 922 flow [2024-06-28 03:36:42,595 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 03:36:42,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:42,595 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:42,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-28 03:36:42,595 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 03:36:42,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:42,596 INFO L85 PathProgramCache]: Analyzing trace with hash 1534580273, now seen corresponding path program 1 times [2024-06-28 03:36:42,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:42,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668648537] [2024-06-28 03:36:42,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:42,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:43,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:43,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:43,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668648537] [2024-06-28 03:36:43,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668648537] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:43,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:43,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:43,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259720939] [2024-06-28 03:36:43,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:43,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:43,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:43,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:43,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:43,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:43,343 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 92 transitions, 922 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 03:36:43,343 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:43,343 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:43,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:43,537 INFO L124 PetriNetUnfolderBase]: 256/459 cut-off events. [2024-06-28 03:36:43,537 INFO L125 PetriNetUnfolderBase]: For 6810/6810 co-relation queries the response was YES. [2024-06-28 03:36:43,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2753 conditions, 459 events. 256/459 cut-off events. For 6810/6810 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1815 event pairs, 63 based on Foata normal form. 1/459 useless extension candidates. Maximal degree in co-relation 2704. Up to 426 conditions per place. [2024-06-28 03:36:43,542 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 87 selfloop transitions, 16 changer transitions 0/105 dead transitions. [2024-06-28 03:36:43,542 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 105 transitions, 1170 flow [2024-06-28 03:36:43,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:43,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:43,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-28 03:36:43,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34099616858237547 [2024-06-28 03:36:43,543 INFO L175 Difference]: Start difference. First operand has 104 places, 92 transitions, 922 flow. Second operand 9 states and 89 transitions. [2024-06-28 03:36:43,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 105 transitions, 1170 flow [2024-06-28 03:36:43,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 105 transitions, 1120 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-28 03:36:43,563 INFO L231 Difference]: Finished difference. Result has 109 places, 94 transitions, 930 flow [2024-06-28 03:36:43,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=930, PETRI_PLACES=109, PETRI_TRANSITIONS=94} [2024-06-28 03:36:43,563 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 81 predicate places. [2024-06-28 03:36:43,563 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 94 transitions, 930 flow [2024-06-28 03:36:43,564 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 03:36:43,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:43,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:43,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-28 03:36:43,564 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 03:36:43,564 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:43,564 INFO L85 PathProgramCache]: Analyzing trace with hash 686715155, now seen corresponding path program 3 times [2024-06-28 03:36:43,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:43,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160371858] [2024-06-28 03:36:43,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:43,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:44,306 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 03:36:44,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:44,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160371858] [2024-06-28 03:36:44,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160371858] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:44,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:44,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:44,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101979587] [2024-06-28 03:36:44,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:44,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:44,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:44,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:44,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:44,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:44,361 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 94 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 03:36:44,361 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:44,361 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:44,361 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:44,599 INFO L124 PetriNetUnfolderBase]: 254/456 cut-off events. [2024-06-28 03:36:44,600 INFO L125 PetriNetUnfolderBase]: For 6927/6927 co-relation queries the response was YES. [2024-06-28 03:36:44,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2714 conditions, 456 events. 254/456 cut-off events. For 6927/6927 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 1796 event pairs, 52 based on Foata normal form. 1/456 useless extension candidates. Maximal degree in co-relation 2663. Up to 370 conditions per place. [2024-06-28 03:36:44,604 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 73 selfloop transitions, 30 changer transitions 0/105 dead transitions. [2024-06-28 03:36:44,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 105 transitions, 1166 flow [2024-06-28 03:36:44,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-28 03:36:44,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-28 03:36:44,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 77 transitions. [2024-06-28 03:36:44,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 03:36:44,606 INFO L175 Difference]: Start difference. First operand has 109 places, 94 transitions, 930 flow. Second operand 7 states and 77 transitions. [2024-06-28 03:36:44,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 105 transitions, 1166 flow [2024-06-28 03:36:44,627 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 105 transitions, 1111 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:44,629 INFO L231 Difference]: Finished difference. Result has 110 places, 94 transitions, 955 flow [2024-06-28 03:36:44,630 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=875, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=955, PETRI_PLACES=110, PETRI_TRANSITIONS=94} [2024-06-28 03:36:44,630 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 82 predicate places. [2024-06-28 03:36:44,630 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 94 transitions, 955 flow [2024-06-28 03:36:44,630 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 03:36:44,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:44,631 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:44,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-28 03:36:44,631 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 03:36:44,631 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:44,631 INFO L85 PathProgramCache]: Analyzing trace with hash 956691852, now seen corresponding path program 5 times [2024-06-28 03:36:44,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:44,632 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1216967667] [2024-06-28 03:36:44,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:44,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:44,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:45,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:45,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:45,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1216967667] [2024-06-28 03:36:45,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1216967667] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:45,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:45,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:45,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324409056] [2024-06-28 03:36:45,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:45,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:45,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:45,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:45,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:45,216 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:45,216 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 94 transitions, 955 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 03:36:45,216 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:45,216 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:45,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:45,447 INFO L124 PetriNetUnfolderBase]: 260/464 cut-off events. [2024-06-28 03:36:45,448 INFO L125 PetriNetUnfolderBase]: For 7771/7771 co-relation queries the response was YES. [2024-06-28 03:36:45,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2842 conditions, 464 events. 260/464 cut-off events. For 7771/7771 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 1826 event pairs, 37 based on Foata normal form. 2/465 useless extension candidates. Maximal degree in co-relation 2791. Up to 365 conditions per place. [2024-06-28 03:36:45,452 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 74 selfloop transitions, 33 changer transitions 0/109 dead transitions. [2024-06-28 03:36:45,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 109 transitions, 1237 flow [2024-06-28 03:36:45,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:45,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:45,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 03:36:45,454 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3706896551724138 [2024-06-28 03:36:45,454 INFO L175 Difference]: Start difference. First operand has 110 places, 94 transitions, 955 flow. Second operand 8 states and 86 transitions. [2024-06-28 03:36:45,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 109 transitions, 1237 flow [2024-06-28 03:36:45,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 109 transitions, 1163 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:45,477 INFO L231 Difference]: Finished difference. Result has 112 places, 96 transitions, 994 flow [2024-06-28 03:36:45,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=994, PETRI_PLACES=112, PETRI_TRANSITIONS=96} [2024-06-28 03:36:45,478 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 84 predicate places. [2024-06-28 03:36:45,478 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 96 transitions, 994 flow [2024-06-28 03:36:45,478 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 03:36:45,478 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:45,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:45,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-28 03:36:45,479 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 03:36:45,479 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:45,479 INFO L85 PathProgramCache]: Analyzing trace with hash 690443897, now seen corresponding path program 2 times [2024-06-28 03:36:45,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:45,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327016831] [2024-06-28 03:36:45,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:45,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:46,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:46,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:46,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327016831] [2024-06-28 03:36:46,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327016831] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:46,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:46,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:46,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451612598] [2024-06-28 03:36:46,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:46,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:46,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:46,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:46,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:46,211 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:46,212 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 96 transitions, 994 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 03:36:46,212 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:46,212 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:46,212 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:46,397 INFO L124 PetriNetUnfolderBase]: 263/471 cut-off events. [2024-06-28 03:36:46,397 INFO L125 PetriNetUnfolderBase]: For 7283/7283 co-relation queries the response was YES. [2024-06-28 03:36:46,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2901 conditions, 471 events. 263/471 cut-off events. For 7283/7283 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 1877 event pairs, 63 based on Foata normal form. 1/471 useless extension candidates. Maximal degree in co-relation 2849. Up to 429 conditions per place. [2024-06-28 03:36:46,402 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 84 selfloop transitions, 21 changer transitions 0/107 dead transitions. [2024-06-28 03:36:46,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 107 transitions, 1246 flow [2024-06-28 03:36:46,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:46,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:46,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-28 03:36:46,403 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-28 03:36:46,403 INFO L175 Difference]: Start difference. First operand has 112 places, 96 transitions, 994 flow. Second operand 8 states and 80 transitions. [2024-06-28 03:36:46,403 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 107 transitions, 1246 flow [2024-06-28 03:36:46,425 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 107 transitions, 1171 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:46,427 INFO L231 Difference]: Finished difference. Result has 114 places, 98 transitions, 993 flow [2024-06-28 03:36:46,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=919, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=993, PETRI_PLACES=114, PETRI_TRANSITIONS=98} [2024-06-28 03:36:46,427 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 86 predicate places. [2024-06-28 03:36:46,428 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 98 transitions, 993 flow [2024-06-28 03:36:46,428 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 03:36:46,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:46,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:46,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-28 03:36:46,428 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 03:36:46,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:46,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1542963876, now seen corresponding path program 6 times [2024-06-28 03:36:46,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:46,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639760431] [2024-06-28 03:36:46,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:46,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:46,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:46,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:46,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:46,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639760431] [2024-06-28 03:36:46,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639760431] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:46,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:46,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:46,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289917099] [2024-06-28 03:36:46,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:46,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:46,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:46,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:46,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:47,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:47,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 98 transitions, 993 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 03:36:47,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:47,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:47,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:47,249 INFO L124 PetriNetUnfolderBase]: 295/521 cut-off events. [2024-06-28 03:36:47,249 INFO L125 PetriNetUnfolderBase]: For 9789/9789 co-relation queries the response was YES. [2024-06-28 03:36:47,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3290 conditions, 521 events. 295/521 cut-off events. For 9789/9789 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2102 event pairs, 47 based on Foata normal form. 4/521 useless extension candidates. Maximal degree in co-relation 3237. Up to 386 conditions per place. [2024-06-28 03:36:47,255 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 81 selfloop transitions, 36 changer transitions 0/119 dead transitions. [2024-06-28 03:36:47,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 119 transitions, 1430 flow [2024-06-28 03:36:47,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:47,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:47,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 03:36:47,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3831417624521073 [2024-06-28 03:36:47,257 INFO L175 Difference]: Start difference. First operand has 114 places, 98 transitions, 993 flow. Second operand 9 states and 100 transitions. [2024-06-28 03:36:47,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 119 transitions, 1430 flow [2024-06-28 03:36:47,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 119 transitions, 1380 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:47,282 INFO L231 Difference]: Finished difference. Result has 117 places, 104 transitions, 1112 flow [2024-06-28 03:36:47,283 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1112, PETRI_PLACES=117, PETRI_TRANSITIONS=104} [2024-06-28 03:36:47,283 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 89 predicate places. [2024-06-28 03:36:47,283 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 104 transitions, 1112 flow [2024-06-28 03:36:47,284 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 03:36:47,284 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:47,284 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:47,284 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-28 03:36:47,284 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 03:36:47,284 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:47,285 INFO L85 PathProgramCache]: Analyzing trace with hash 690438100, now seen corresponding path program 7 times [2024-06-28 03:36:47,285 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:47,285 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393708609] [2024-06-28 03:36:47,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:47,285 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:47,751 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 03:36:47,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:47,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393708609] [2024-06-28 03:36:47,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393708609] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:47,752 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:47,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:47,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889768408] [2024-06-28 03:36:47,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:47,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:47,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:47,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:47,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:47,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:47,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 104 transitions, 1112 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 03:36:47,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:47,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:47,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:48,039 INFO L124 PetriNetUnfolderBase]: 296/524 cut-off events. [2024-06-28 03:36:48,039 INFO L125 PetriNetUnfolderBase]: For 10256/10256 co-relation queries the response was YES. [2024-06-28 03:36:48,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3421 conditions, 524 events. 296/524 cut-off events. For 10256/10256 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2109 event pairs, 42 based on Foata normal form. 2/525 useless extension candidates. Maximal degree in co-relation 3367. Up to 287 conditions per place. [2024-06-28 03:36:48,044 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 66 selfloop transitions, 52 changer transitions 0/120 dead transitions. [2024-06-28 03:36:48,045 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 120 transitions, 1492 flow [2024-06-28 03:36:48,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:48,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:48,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-28 03:36:48,046 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3922413793103448 [2024-06-28 03:36:48,046 INFO L175 Difference]: Start difference. First operand has 117 places, 104 transitions, 1112 flow. Second operand 8 states and 91 transitions. [2024-06-28 03:36:48,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 120 transitions, 1492 flow [2024-06-28 03:36:48,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 120 transitions, 1371 flow, removed 39 selfloop flow, removed 5 redundant places. [2024-06-28 03:36:48,071 INFO L231 Difference]: Finished difference. Result has 120 places, 106 transitions, 1145 flow [2024-06-28 03:36:48,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=995, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1145, PETRI_PLACES=120, PETRI_TRANSITIONS=106} [2024-06-28 03:36:48,072 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 92 predicate places. [2024-06-28 03:36:48,072 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 106 transitions, 1145 flow [2024-06-28 03:36:48,072 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 03:36:48,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:48,072 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:48,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-28 03:36:48,073 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 03:36:48,073 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:48,073 INFO L85 PathProgramCache]: Analyzing trace with hash -2130822193, now seen corresponding path program 3 times [2024-06-28 03:36:48,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:48,073 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2107721906] [2024-06-28 03:36:48,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:48,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:48,739 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 03:36:48,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:48,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2107721906] [2024-06-28 03:36:48,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2107721906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:48,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:48,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:48,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303519027] [2024-06-28 03:36:48,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:48,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:48,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:48,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:48,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:48,806 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:48,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 106 transitions, 1145 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 03:36:48,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:48,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:48,807 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:49,105 INFO L124 PetriNetUnfolderBase]: 324/571 cut-off events. [2024-06-28 03:36:49,105 INFO L125 PetriNetUnfolderBase]: For 12195/12195 co-relation queries the response was YES. [2024-06-28 03:36:49,107 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3848 conditions, 571 events. 324/571 cut-off events. For 12195/12195 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2379 event pairs, 92 based on Foata normal form. 1/571 useless extension candidates. Maximal degree in co-relation 3794. Up to 516 conditions per place. [2024-06-28 03:36:49,120 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 104 selfloop transitions, 19 changer transitions 0/125 dead transitions. [2024-06-28 03:36:49,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 125 transitions, 1635 flow [2024-06-28 03:36:49,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:49,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:49,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-28 03:36:49,122 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3524904214559387 [2024-06-28 03:36:49,122 INFO L175 Difference]: Start difference. First operand has 120 places, 106 transitions, 1145 flow. Second operand 9 states and 92 transitions. [2024-06-28 03:36:49,122 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 125 transitions, 1635 flow [2024-06-28 03:36:49,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 125 transitions, 1532 flow, removed 19 selfloop flow, removed 5 redundant places. [2024-06-28 03:36:49,149 INFO L231 Difference]: Finished difference. Result has 125 places, 113 transitions, 1215 flow [2024-06-28 03:36:49,149 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1048, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1215, PETRI_PLACES=125, PETRI_TRANSITIONS=113} [2024-06-28 03:36:49,153 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 97 predicate places. [2024-06-28 03:36:49,153 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 113 transitions, 1215 flow [2024-06-28 03:36:49,154 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 03:36:49,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:49,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:49,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-28 03:36:49,155 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 03:36:49,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:49,155 INFO L85 PathProgramCache]: Analyzing trace with hash -2131089103, now seen corresponding path program 4 times [2024-06-28 03:36:49,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:49,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457479556] [2024-06-28 03:36:49,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:49,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:49,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:49,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:49,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457479556] [2024-06-28 03:36:49,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457479556] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:49,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:49,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:49,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417394075] [2024-06-28 03:36:49,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:49,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:49,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:49,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:49,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:49,957 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:49,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 113 transitions, 1215 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 03:36:49,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:49,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:49,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:50,217 INFO L124 PetriNetUnfolderBase]: 322/568 cut-off events. [2024-06-28 03:36:50,217 INFO L125 PetriNetUnfolderBase]: For 11848/11848 co-relation queries the response was YES. [2024-06-28 03:36:50,219 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3756 conditions, 568 events. 322/568 cut-off events. For 11848/11848 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2367 event pairs, 97 based on Foata normal form. 1/568 useless extension candidates. Maximal degree in co-relation 3700. Up to 542 conditions per place. [2024-06-28 03:36:50,222 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 105 selfloop transitions, 14 changer transitions 0/121 dead transitions. [2024-06-28 03:36:50,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 121 transitions, 1481 flow [2024-06-28 03:36:50,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:50,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:50,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 83 transitions. [2024-06-28 03:36:50,223 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31800766283524906 [2024-06-28 03:36:50,223 INFO L175 Difference]: Start difference. First operand has 125 places, 113 transitions, 1215 flow. Second operand 9 states and 83 transitions. [2024-06-28 03:36:50,223 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 121 transitions, 1481 flow [2024-06-28 03:36:50,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 121 transitions, 1421 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-28 03:36:50,252 INFO L231 Difference]: Finished difference. Result has 130 places, 114 transitions, 1202 flow [2024-06-28 03:36:50,252 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1159, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1202, PETRI_PLACES=130, PETRI_TRANSITIONS=114} [2024-06-28 03:36:50,254 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 102 predicate places. [2024-06-28 03:36:50,254 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 114 transitions, 1202 flow [2024-06-28 03:36:50,254 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 03:36:50,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:50,254 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:50,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-28 03:36:50,255 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 03:36:50,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:50,255 INFO L85 PathProgramCache]: Analyzing trace with hash -2131089320, now seen corresponding path program 8 times [2024-06-28 03:36:50,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:50,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783285342] [2024-06-28 03:36:50,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:50,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:50,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:50,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:50,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783285342] [2024-06-28 03:36:50,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783285342] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:50,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:50,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:50,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885288331] [2024-06-28 03:36:50,784 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:50,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:50,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:50,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:50,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:50,865 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:50,866 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 114 transitions, 1202 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 03:36:50,866 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:50,866 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:50,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:51,101 INFO L124 PetriNetUnfolderBase]: 324/572 cut-off events. [2024-06-28 03:36:51,101 INFO L125 PetriNetUnfolderBase]: For 12631/12631 co-relation queries the response was YES. [2024-06-28 03:36:51,103 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3722 conditions, 572 events. 324/572 cut-off events. For 12631/12631 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2386 event pairs, 95 based on Foata normal form. 4/575 useless extension candidates. Maximal degree in co-relation 3664. Up to 515 conditions per place. [2024-06-28 03:36:51,105 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 103 selfloop transitions, 21 changer transitions 0/126 dead transitions. [2024-06-28 03:36:51,105 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 126 transitions, 1562 flow [2024-06-28 03:36:51,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:51,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:51,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-28 03:36:51,106 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3620689655172414 [2024-06-28 03:36:51,107 INFO L175 Difference]: Start difference. First operand has 130 places, 114 transitions, 1202 flow. Second operand 8 states and 84 transitions. [2024-06-28 03:36:51,107 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 126 transitions, 1562 flow [2024-06-28 03:36:51,139 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 126 transitions, 1497 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-28 03:36:51,141 INFO L231 Difference]: Finished difference. Result has 131 places, 116 transitions, 1226 flow [2024-06-28 03:36:51,141 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1137, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1226, PETRI_PLACES=131, PETRI_TRANSITIONS=116} [2024-06-28 03:36:51,142 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 103 predicate places. [2024-06-28 03:36:51,142 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 116 transitions, 1226 flow [2024-06-28 03:36:51,142 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 03:36:51,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:51,142 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:51,142 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-28 03:36:51,143 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 03:36:51,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:51,143 INFO L85 PathProgramCache]: Analyzing trace with hash 372171334, now seen corresponding path program 9 times [2024-06-28 03:36:51,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:51,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389509844] [2024-06-28 03:36:51,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:51,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:51,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:51,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:51,630 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:51,630 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389509844] [2024-06-28 03:36:51,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389509844] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:51,630 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:51,630 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:51,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120627638] [2024-06-28 03:36:51,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:51,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:51,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:51,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:51,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:51,669 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:51,669 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 116 transitions, 1226 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 03:36:51,669 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:51,669 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:51,669 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:51,895 INFO L124 PetriNetUnfolderBase]: 340/597 cut-off events. [2024-06-28 03:36:51,896 INFO L125 PetriNetUnfolderBase]: For 14004/14007 co-relation queries the response was YES. [2024-06-28 03:36:51,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4004 conditions, 597 events. 340/597 cut-off events. For 14004/14007 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2496 event pairs, 54 based on Foata normal form. 2/593 useless extension candidates. Maximal degree in co-relation 3945. Up to 256 conditions per place. [2024-06-28 03:36:51,900 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 72 selfloop transitions, 65 changer transitions 0/139 dead transitions. [2024-06-28 03:36:51,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 139 transitions, 1884 flow [2024-06-28 03:36:51,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:51,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:51,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-28 03:36:51,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41379310344827586 [2024-06-28 03:36:51,903 INFO L175 Difference]: Start difference. First operand has 131 places, 116 transitions, 1226 flow. Second operand 8 states and 96 transitions. [2024-06-28 03:36:51,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 139 transitions, 1884 flow [2024-06-28 03:36:51,935 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 139 transitions, 1831 flow, removed 14 selfloop flow, removed 5 redundant places. [2024-06-28 03:36:51,937 INFO L231 Difference]: Finished difference. Result has 136 places, 124 transitions, 1513 flow [2024-06-28 03:36:51,938 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1513, PETRI_PLACES=136, PETRI_TRANSITIONS=124} [2024-06-28 03:36:51,938 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 108 predicate places. [2024-06-28 03:36:51,938 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 124 transitions, 1513 flow [2024-06-28 03:36:51,938 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 03:36:51,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:51,939 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:51,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-28 03:36:51,939 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 03:36:51,939 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:51,940 INFO L85 PathProgramCache]: Analyzing trace with hash -2138440970, now seen corresponding path program 10 times [2024-06-28 03:36:51,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:51,940 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161925993] [2024-06-28 03:36:51,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:51,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:51,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:52,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:52,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:52,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161925993] [2024-06-28 03:36:52,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161925993] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:52,429 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:52,429 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:52,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149718474] [2024-06-28 03:36:52,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:52,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:52,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:52,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:52,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:52,476 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:52,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 124 transitions, 1513 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 03:36:52,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:52,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:52,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:52,695 INFO L124 PetriNetUnfolderBase]: 334/587 cut-off events. [2024-06-28 03:36:52,696 INFO L125 PetriNetUnfolderBase]: For 14752/14752 co-relation queries the response was YES. [2024-06-28 03:36:52,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4107 conditions, 587 events. 334/587 cut-off events. For 14752/14752 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2463 event pairs, 55 based on Foata normal form. 4/587 useless extension candidates. Maximal degree in co-relation 4045. Up to 255 conditions per place. [2024-06-28 03:36:52,701 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 77 selfloop transitions, 60 changer transitions 0/139 dead transitions. [2024-06-28 03:36:52,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 139 transitions, 2019 flow [2024-06-28 03:36:52,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:52,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:52,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 97 transitions. [2024-06-28 03:36:52,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41810344827586204 [2024-06-28 03:36:52,703 INFO L175 Difference]: Start difference. First operand has 136 places, 124 transitions, 1513 flow. Second operand 8 states and 97 transitions. [2024-06-28 03:36:52,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 139 transitions, 2019 flow [2024-06-28 03:36:52,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 139 transitions, 1820 flow, removed 52 selfloop flow, removed 5 redundant places. [2024-06-28 03:36:52,745 INFO L231 Difference]: Finished difference. Result has 139 places, 124 transitions, 1441 flow [2024-06-28 03:36:52,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1314, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1441, PETRI_PLACES=139, PETRI_TRANSITIONS=124} [2024-06-28 03:36:52,747 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 111 predicate places. [2024-06-28 03:36:52,747 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 124 transitions, 1441 flow [2024-06-28 03:36:52,747 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 03:36:52,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:52,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:52,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-28 03:36:52,748 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 03:36:52,748 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:52,748 INFO L85 PathProgramCache]: Analyzing trace with hash 372177131, now seen corresponding path program 5 times [2024-06-28 03:36:52,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:52,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525537849] [2024-06-28 03:36:52,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:52,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:52,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:53,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:53,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:53,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525537849] [2024-06-28 03:36:53,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525537849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:53,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:53,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:53,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481118574] [2024-06-28 03:36:53,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:53,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:53,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:53,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:53,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:53,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:53,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 124 transitions, 1441 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 03:36:53,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:53,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:53,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:53,653 INFO L124 PetriNetUnfolderBase]: 326/574 cut-off events. [2024-06-28 03:36:53,653 INFO L125 PetriNetUnfolderBase]: For 13250/13250 co-relation queries the response was YES. [2024-06-28 03:36:53,654 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3797 conditions, 574 events. 326/574 cut-off events. For 13250/13250 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2401 event pairs, 52 based on Foata normal form. 3/573 useless extension candidates. Maximal degree in co-relation 3735. Up to 348 conditions per place. [2024-06-28 03:36:53,656 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 81 selfloop transitions, 59 changer transitions 0/142 dead transitions. [2024-06-28 03:36:53,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 146 places, 142 transitions, 1907 flow [2024-06-28 03:36:53,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:36:53,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:36:53,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 92 transitions. [2024-06-28 03:36:53,658 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39655172413793105 [2024-06-28 03:36:53,658 INFO L175 Difference]: Start difference. First operand has 139 places, 124 transitions, 1441 flow. Second operand 8 states and 92 transitions. [2024-06-28 03:36:53,658 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 146 places, 142 transitions, 1907 flow [2024-06-28 03:36:53,685 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 142 transitions, 1721 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:53,687 INFO L231 Difference]: Finished difference. Result has 143 places, 130 transitions, 1533 flow [2024-06-28 03:36:53,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1533, PETRI_PLACES=143, PETRI_TRANSITIONS=130} [2024-06-28 03:36:53,687 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 115 predicate places. [2024-06-28 03:36:53,688 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 130 transitions, 1533 flow [2024-06-28 03:36:53,688 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 03:36:53,688 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:53,688 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:53,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-28 03:36:53,688 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 03:36:53,689 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:53,689 INFO L85 PathProgramCache]: Analyzing trace with hash 2089638347, now seen corresponding path program 1 times [2024-06-28 03:36:53,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:53,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268422505] [2024-06-28 03:36:53,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:53,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:53,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:54,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:54,308 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:54,308 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268422505] [2024-06-28 03:36:54,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1268422505] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:54,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:54,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:36:54,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1645953676] [2024-06-28 03:36:54,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:54,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:36:54,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:54,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:36:54,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:36:54,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:54,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 130 transitions, 1533 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 03:36:54,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:54,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:54,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:54,596 INFO L124 PetriNetUnfolderBase]: 335/595 cut-off events. [2024-06-28 03:36:54,597 INFO L125 PetriNetUnfolderBase]: For 13431/13431 co-relation queries the response was YES. [2024-06-28 03:36:54,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3927 conditions, 595 events. 335/595 cut-off events. For 13431/13431 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2546 event pairs, 70 based on Foata normal form. 2/596 useless extension candidates. Maximal degree in co-relation 3862. Up to 518 conditions per place. [2024-06-28 03:36:54,600 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 123 selfloop transitions, 23 changer transitions 0/148 dead transitions. [2024-06-28 03:36:54,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 148 transitions, 1883 flow [2024-06-28 03:36:54,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:54,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:54,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 03:36:54,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36398467432950193 [2024-06-28 03:36:54,601 INFO L175 Difference]: Start difference. First operand has 143 places, 130 transitions, 1533 flow. Second operand 9 states and 95 transitions. [2024-06-28 03:36:54,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 148 transitions, 1883 flow [2024-06-28 03:36:54,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 148 transitions, 1785 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:54,632 INFO L231 Difference]: Finished difference. Result has 147 places, 132 transitions, 1507 flow [2024-06-28 03:36:54,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1435, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1507, PETRI_PLACES=147, PETRI_TRANSITIONS=132} [2024-06-28 03:36:54,632 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 119 predicate places. [2024-06-28 03:36:54,633 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 132 transitions, 1507 flow [2024-06-28 03:36:54,633 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 03:36:54,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:54,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:54,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-28 03:36:54,633 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 03:36:54,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:54,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1667183053, now seen corresponding path program 2 times [2024-06-28 03:36:54,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:54,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238888686] [2024-06-28 03:36:54,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:54,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:55,196 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 03:36:55,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:55,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238888686] [2024-06-28 03:36:55,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238888686] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:55,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:55,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:36:55,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697919114] [2024-06-28 03:36:55,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:55,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:36:55,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:55,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:36:55,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:36:55,256 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:55,256 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 132 transitions, 1507 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 03:36:55,256 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:55,256 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:55,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:55,471 INFO L124 PetriNetUnfolderBase]: 344/614 cut-off events. [2024-06-28 03:36:55,471 INFO L125 PetriNetUnfolderBase]: For 14272/14272 co-relation queries the response was YES. [2024-06-28 03:36:55,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3940 conditions, 614 events. 344/614 cut-off events. For 14272/14272 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2705 event pairs, 49 based on Foata normal form. 2/615 useless extension candidates. Maximal degree in co-relation 3873. Up to 509 conditions per place. [2024-06-28 03:36:55,474 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 124 selfloop transitions, 24 changer transitions 0/150 dead transitions. [2024-06-28 03:36:55,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 150 transitions, 1863 flow [2024-06-28 03:36:55,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:55,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:55,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 92 transitions. [2024-06-28 03:36:55,475 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3524904214559387 [2024-06-28 03:36:55,475 INFO L175 Difference]: Start difference. First operand has 147 places, 132 transitions, 1507 flow. Second operand 9 states and 92 transitions. [2024-06-28 03:36:55,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 150 transitions, 1863 flow [2024-06-28 03:36:55,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 150 transitions, 1811 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:55,509 INFO L231 Difference]: Finished difference. Result has 150 places, 134 transitions, 1529 flow [2024-06-28 03:36:55,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1455, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1529, PETRI_PLACES=150, PETRI_TRANSITIONS=134} [2024-06-28 03:36:55,509 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 122 predicate places. [2024-06-28 03:36:55,510 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 134 transitions, 1529 flow [2024-06-28 03:36:55,510 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 03:36:55,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:55,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:55,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-28 03:36:55,510 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 03:36:55,510 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:55,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1164218277, now seen corresponding path program 1 times [2024-06-28 03:36:55,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:55,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160425740] [2024-06-28 03:36:55,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:55,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:56,077 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:56,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:56,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160425740] [2024-06-28 03:36:56,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160425740] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:56,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:56,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:36:56,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902137457] [2024-06-28 03:36:56,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:56,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:36:56,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:56,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:36:56,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:36:56,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:56,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 134 transitions, 1529 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 03:36:56,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:56,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:56,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:56,363 INFO L124 PetriNetUnfolderBase]: 347/619 cut-off events. [2024-06-28 03:36:56,364 INFO L125 PetriNetUnfolderBase]: For 14641/14641 co-relation queries the response was YES. [2024-06-28 03:36:56,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4018 conditions, 619 events. 347/619 cut-off events. For 14641/14641 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2729 event pairs, 65 based on Foata normal form. 1/619 useless extension candidates. Maximal degree in co-relation 3950. Up to 540 conditions per place. [2024-06-28 03:36:56,368 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 120 selfloop transitions, 29 changer transitions 0/151 dead transitions. [2024-06-28 03:36:56,368 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 151 transitions, 1912 flow [2024-06-28 03:36:56,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:56,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:56,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:36:56,369 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367816091954023 [2024-06-28 03:36:56,369 INFO L175 Difference]: Start difference. First operand has 150 places, 134 transitions, 1529 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:36:56,370 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 151 transitions, 1912 flow [2024-06-28 03:36:56,422 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 151 transitions, 1824 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-28 03:36:56,425 INFO L231 Difference]: Finished difference. Result has 150 places, 136 transitions, 1554 flow [2024-06-28 03:36:56,425 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1441, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1554, PETRI_PLACES=150, PETRI_TRANSITIONS=136} [2024-06-28 03:36:56,425 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 122 predicate places. [2024-06-28 03:36:56,425 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 136 transitions, 1554 flow [2024-06-28 03:36:56,426 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 03:36:56,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:56,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:56,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-28 03:36:56,426 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 03:36:56,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:56,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1164233033, now seen corresponding path program 3 times [2024-06-28 03:36:56,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:56,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537782211] [2024-06-28 03:36:56,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:56,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:57,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:57,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:57,103 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537782211] [2024-06-28 03:36:57,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537782211] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:57,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:57,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:36:57,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066223888] [2024-06-28 03:36:57,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:57,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:36:57,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:57,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:36:57,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:36:57,158 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:57,159 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 136 transitions, 1554 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 03:36:57,159 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:57,159 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:57,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:57,397 INFO L124 PetriNetUnfolderBase]: 351/627 cut-off events. [2024-06-28 03:36:57,398 INFO L125 PetriNetUnfolderBase]: For 15940/15940 co-relation queries the response was YES. [2024-06-28 03:36:57,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4044 conditions, 627 events. 351/627 cut-off events. For 15940/15940 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2770 event pairs, 68 based on Foata normal form. 2/628 useless extension candidates. Maximal degree in co-relation 3978. Up to 551 conditions per place. [2024-06-28 03:36:57,402 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 124 selfloop transitions, 26 changer transitions 0/152 dead transitions. [2024-06-28 03:36:57,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 152 transitions, 1910 flow [2024-06-28 03:36:57,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:57,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:57,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 03:36:57,413 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36398467432950193 [2024-06-28 03:36:57,413 INFO L175 Difference]: Start difference. First operand has 150 places, 136 transitions, 1554 flow. Second operand 9 states and 95 transitions. [2024-06-28 03:36:57,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 158 places, 152 transitions, 1910 flow [2024-06-28 03:36:57,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 152 transitions, 1834 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-28 03:36:57,465 INFO L231 Difference]: Finished difference. Result has 152 places, 137 transitions, 1553 flow [2024-06-28 03:36:57,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1478, PETRI_DIFFERENCE_MINUEND_PLACES=143, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1553, PETRI_PLACES=152, PETRI_TRANSITIONS=137} [2024-06-28 03:36:57,466 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 124 predicate places. [2024-06-28 03:36:57,467 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 137 transitions, 1553 flow [2024-06-28 03:36:57,467 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 03:36:57,467 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:57,467 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:57,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-28 03:36:57,467 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 03:36:57,468 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:57,468 INFO L85 PathProgramCache]: Analyzing trace with hash 486733257, now seen corresponding path program 1 times [2024-06-28 03:36:57,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:57,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462103438] [2024-06-28 03:36:57,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:57,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:57,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:57,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:36:57,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:57,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462103438] [2024-06-28 03:36:57,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462103438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:57,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:57,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:36:57,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406818631] [2024-06-28 03:36:57,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:57,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:36:57,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:57,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:36:57,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:36:58,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:58,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 137 transitions, 1553 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:58,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:58,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:58,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:58,278 INFO L124 PetriNetUnfolderBase]: 348/624 cut-off events. [2024-06-28 03:36:58,278 INFO L125 PetriNetUnfolderBase]: For 15789/15789 co-relation queries the response was YES. [2024-06-28 03:36:58,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3975 conditions, 624 events. 348/624 cut-off events. For 15789/15789 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 2758 event pairs, 49 based on Foata normal form. 2/625 useless extension candidates. Maximal degree in co-relation 3908. Up to 469 conditions per place. [2024-06-28 03:36:58,283 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 103 selfloop transitions, 48 changer transitions 0/153 dead transitions. [2024-06-28 03:36:58,283 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 153 transitions, 1991 flow [2024-06-28 03:36:58,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:58,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:58,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 03:36:58,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3831417624521073 [2024-06-28 03:36:58,285 INFO L175 Difference]: Start difference. First operand has 152 places, 137 transitions, 1553 flow. Second operand 9 states and 100 transitions. [2024-06-28 03:36:58,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 160 places, 153 transitions, 1991 flow [2024-06-28 03:36:58,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 153 transitions, 1928 flow, removed 7 selfloop flow, removed 7 redundant places. [2024-06-28 03:36:58,325 INFO L231 Difference]: Finished difference. Result has 155 places, 138 transitions, 1646 flow [2024-06-28 03:36:58,325 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1490, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1646, PETRI_PLACES=155, PETRI_TRANSITIONS=138} [2024-06-28 03:36:58,325 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 127 predicate places. [2024-06-28 03:36:58,325 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 138 transitions, 1646 flow [2024-06-28 03:36:58,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:36:58,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:58,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:58,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-28 03:36:58,325 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 03:36:58,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:58,326 INFO L85 PathProgramCache]: Analyzing trace with hash 737513685, now seen corresponding path program 4 times [2024-06-28 03:36:58,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:58,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1967648373] [2024-06-28 03:36:58,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:58,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:58,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:36:59,107 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 03:36:59,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:36:59,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1967648373] [2024-06-28 03:36:59,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1967648373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:36:59,108 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:36:59,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:36:59,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601718499] [2024-06-28 03:36:59,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:36:59,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:36:59,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:36:59,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:36:59,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:36:59,205 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:36:59,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 138 transitions, 1646 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 03:36:59,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:36:59,205 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:36:59,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:36:59,453 INFO L124 PetriNetUnfolderBase]: 357/642 cut-off events. [2024-06-28 03:36:59,453 INFO L125 PetriNetUnfolderBase]: For 16857/16857 co-relation queries the response was YES. [2024-06-28 03:36:59,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4162 conditions, 642 events. 357/642 cut-off events. For 16857/16857 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 2900 event pairs, 49 based on Foata normal form. 2/643 useless extension candidates. Maximal degree in co-relation 4093. Up to 565 conditions per place. [2024-06-28 03:36:59,458 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 130 selfloop transitions, 23 changer transitions 0/155 dead transitions. [2024-06-28 03:36:59,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 155 transitions, 2016 flow [2024-06-28 03:36:59,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:36:59,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:36:59,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:36:59,460 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367816091954023 [2024-06-28 03:36:59,460 INFO L175 Difference]: Start difference. First operand has 155 places, 138 transitions, 1646 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:36:59,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 155 transitions, 2016 flow [2024-06-28 03:36:59,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 155 transitions, 1934 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-28 03:36:59,532 INFO L231 Difference]: Finished difference. Result has 159 places, 140 transitions, 1644 flow [2024-06-28 03:36:59,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1564, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1644, PETRI_PLACES=159, PETRI_TRANSITIONS=140} [2024-06-28 03:36:59,534 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 131 predicate places. [2024-06-28 03:36:59,535 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 140 transitions, 1644 flow [2024-06-28 03:36:59,535 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 03:36:59,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:36:59,535 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:36:59,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-28 03:36:59,535 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 03:36:59,536 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:36:59,536 INFO L85 PathProgramCache]: Analyzing trace with hash 2001086755, now seen corresponding path program 5 times [2024-06-28 03:36:59,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:36:59,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908210083] [2024-06-28 03:36:59,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:36:59,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:36:59,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:00,275 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 03:37:00,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:00,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908210083] [2024-06-28 03:37:00,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908210083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:00,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:00,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:00,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009174772] [2024-06-28 03:37:00,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:00,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:00,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:00,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:00,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:00,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:00,334 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 140 transitions, 1644 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 03:37:00,334 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:00,334 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:00,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:00,596 INFO L124 PetriNetUnfolderBase]: 361/650 cut-off events. [2024-06-28 03:37:00,596 INFO L125 PetriNetUnfolderBase]: For 17090/17090 co-relation queries the response was YES. [2024-06-28 03:37:00,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4187 conditions, 650 events. 361/650 cut-off events. For 17090/17090 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2954 event pairs, 49 based on Foata normal form. 2/651 useless extension candidates. Maximal degree in co-relation 4116. Up to 574 conditions per place. [2024-06-28 03:37:00,602 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 127 selfloop transitions, 26 changer transitions 0/155 dead transitions. [2024-06-28 03:37:00,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 155 transitions, 2008 flow [2024-06-28 03:37:00,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:00,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:00,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:37:00,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367816091954023 [2024-06-28 03:37:00,610 INFO L175 Difference]: Start difference. First operand has 159 places, 140 transitions, 1644 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:37:00,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 155 transitions, 2008 flow [2024-06-28 03:37:00,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 155 transitions, 1948 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-06-28 03:37:00,673 INFO L231 Difference]: Finished difference. Result has 162 places, 141 transitions, 1663 flow [2024-06-28 03:37:00,673 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1663, PETRI_PLACES=162, PETRI_TRANSITIONS=141} [2024-06-28 03:37:00,674 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 134 predicate places. [2024-06-28 03:37:00,674 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 141 transitions, 1663 flow [2024-06-28 03:37:00,674 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 03:37:00,674 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:00,674 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:00,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-28 03:37:00,675 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 03:37:00,675 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:00,675 INFO L85 PathProgramCache]: Analyzing trace with hash 2001086879, now seen corresponding path program 2 times [2024-06-28 03:37:00,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:00,675 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1996910981] [2024-06-28 03:37:00,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:00,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:01,352 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:01,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:01,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1996910981] [2024-06-28 03:37:01,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1996910981] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:01,353 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:01,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:01,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688564198] [2024-06-28 03:37:01,353 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:01,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:01,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:01,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:01,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:01,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:01,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 141 transitions, 1663 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 03:37:01,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:01,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:01,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:01,666 INFO L124 PetriNetUnfolderBase]: 358/645 cut-off events. [2024-06-28 03:37:01,666 INFO L125 PetriNetUnfolderBase]: For 16539/16539 co-relation queries the response was YES. [2024-06-28 03:37:01,669 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4120 conditions, 645 events. 358/645 cut-off events. For 16539/16539 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 2927 event pairs, 49 based on Foata normal form. 1/645 useless extension candidates. Maximal degree in co-relation 4048. Up to 566 conditions per place. [2024-06-28 03:37:01,671 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 124 selfloop transitions, 29 changer transitions 0/155 dead transitions. [2024-06-28 03:37:01,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 155 transitions, 2009 flow [2024-06-28 03:37:01,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:01,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:01,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:37:01,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716475095785441 [2024-06-28 03:37:01,672 INFO L175 Difference]: Start difference. First operand has 162 places, 141 transitions, 1663 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:37:01,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 155 transitions, 2009 flow [2024-06-28 03:37:01,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 155 transitions, 1930 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-28 03:37:01,718 INFO L231 Difference]: Finished difference. Result has 164 places, 141 transitions, 1650 flow [2024-06-28 03:37:01,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1584, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1650, PETRI_PLACES=164, PETRI_TRANSITIONS=141} [2024-06-28 03:37:01,719 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 136 predicate places. [2024-06-28 03:37:01,719 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 141 transitions, 1650 flow [2024-06-28 03:37:01,719 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 03:37:01,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:01,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:01,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-28 03:37:01,719 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 03:37:01,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:01,719 INFO L85 PathProgramCache]: Analyzing trace with hash 2119174435, now seen corresponding path program 6 times [2024-06-28 03:37:01,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:01,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922031819] [2024-06-28 03:37:01,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:01,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:02,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:02,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:02,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922031819] [2024-06-28 03:37:02,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922031819] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:02,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:02,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:37:02,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323699292] [2024-06-28 03:37:02,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:02,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:37:02,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:02,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:37:02,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:37:02,391 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:02,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 141 transitions, 1650 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:02,392 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:02,392 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:02,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:02,609 INFO L124 PetriNetUnfolderBase]: 362/653 cut-off events. [2024-06-28 03:37:02,610 INFO L125 PetriNetUnfolderBase]: For 18020/18020 co-relation queries the response was YES. [2024-06-28 03:37:02,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4170 conditions, 653 events. 362/653 cut-off events. For 18020/18020 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 2964 event pairs, 51 based on Foata normal form. 2/654 useless extension candidates. Maximal degree in co-relation 4097. Up to 561 conditions per place. [2024-06-28 03:37:02,614 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 121 selfloop transitions, 33 changer transitions 0/156 dead transitions. [2024-06-28 03:37:02,614 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 156 transitions, 2018 flow [2024-06-28 03:37:02,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:02,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:02,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:37:02,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367816091954023 [2024-06-28 03:37:02,615 INFO L175 Difference]: Start difference. First operand has 164 places, 141 transitions, 1650 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:37:02,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 156 transitions, 2018 flow [2024-06-28 03:37:02,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 156 transitions, 1912 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-28 03:37:02,667 INFO L231 Difference]: Finished difference. Result has 164 places, 142 transitions, 1638 flow [2024-06-28 03:37:02,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1544, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1638, PETRI_PLACES=164, PETRI_TRANSITIONS=142} [2024-06-28 03:37:02,667 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 136 predicate places. [2024-06-28 03:37:02,668 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 142 transitions, 1638 flow [2024-06-28 03:37:02,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:02,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:02,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:02,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-28 03:37:02,668 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 03:37:02,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:02,669 INFO L85 PathProgramCache]: Analyzing trace with hash 2119359133, now seen corresponding path program 1 times [2024-06-28 03:37:02,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:02,669 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14511253] [2024-06-28 03:37:02,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:02,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:03,313 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 03:37:03,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:03,314 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14511253] [2024-06-28 03:37:03,314 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14511253] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:03,315 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:03,315 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:03,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1761702581] [2024-06-28 03:37:03,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:03,316 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:03,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:03,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:03,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:03,364 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:03,364 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 142 transitions, 1638 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 03:37:03,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:03,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:03,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:03,541 INFO L124 PetriNetUnfolderBase]: 366/661 cut-off events. [2024-06-28 03:37:03,541 INFO L125 PetriNetUnfolderBase]: For 19019/19019 co-relation queries the response was YES. [2024-06-28 03:37:03,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4215 conditions, 661 events. 366/661 cut-off events. For 19019/19019 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3039 event pairs, 81 based on Foata normal form. 2/662 useless extension candidates. Maximal degree in co-relation 4141. Up to 622 conditions per place. [2024-06-28 03:37:03,545 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 137 selfloop transitions, 17 changer transitions 0/156 dead transitions. [2024-06-28 03:37:03,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 156 transitions, 1998 flow [2024-06-28 03:37:03,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:03,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:03,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-06-28 03:37:03,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33448275862068966 [2024-06-28 03:37:03,546 INFO L175 Difference]: Start difference. First operand has 164 places, 142 transitions, 1638 flow. Second operand 10 states and 97 transitions. [2024-06-28 03:37:03,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 156 transitions, 1998 flow [2024-06-28 03:37:03,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 156 transitions, 1892 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-28 03:37:03,597 INFO L231 Difference]: Finished difference. Result has 166 places, 143 transitions, 1592 flow [2024-06-28 03:37:03,597 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1532, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1592, PETRI_PLACES=166, PETRI_TRANSITIONS=143} [2024-06-28 03:37:03,598 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 138 predicate places. [2024-06-28 03:37:03,598 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 143 transitions, 1592 flow [2024-06-28 03:37:03,598 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 03:37:03,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:03,598 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:03,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-28 03:37:03,599 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 03:37:03,599 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:03,599 INFO L85 PathProgramCache]: Analyzing trace with hash -410184659, now seen corresponding path program 7 times [2024-06-28 03:37:03,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:03,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690807141] [2024-06-28 03:37:03,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:03,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:03,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:04,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:04,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:04,286 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690807141] [2024-06-28 03:37:04,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [690807141] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:04,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:04,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:04,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1382974700] [2024-06-28 03:37:04,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:04,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:04,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:04,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:04,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:04,370 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:04,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 143 transitions, 1592 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 03:37:04,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:04,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:04,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:04,620 INFO L124 PetriNetUnfolderBase]: 370/669 cut-off events. [2024-06-28 03:37:04,620 INFO L125 PetriNetUnfolderBase]: For 19583/19583 co-relation queries the response was YES. [2024-06-28 03:37:04,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4220 conditions, 669 events. 370/669 cut-off events. For 19583/19583 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3086 event pairs, 49 based on Foata normal form. 2/670 useless extension candidates. Maximal degree in co-relation 4145. Up to 533 conditions per place. [2024-06-28 03:37:04,624 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 128 selfloop transitions, 27 changer transitions 0/157 dead transitions. [2024-06-28 03:37:04,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 157 transitions, 1958 flow [2024-06-28 03:37:04,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:37:04,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:37:04,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 83 transitions. [2024-06-28 03:37:04,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3577586206896552 [2024-06-28 03:37:04,625 INFO L175 Difference]: Start difference. First operand has 166 places, 143 transitions, 1592 flow. Second operand 8 states and 83 transitions. [2024-06-28 03:37:04,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 157 transitions, 1958 flow [2024-06-28 03:37:04,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 157 transitions, 1908 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-28 03:37:04,680 INFO L231 Difference]: Finished difference. Result has 166 places, 144 transitions, 1632 flow [2024-06-28 03:37:04,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=143, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1632, PETRI_PLACES=166, PETRI_TRANSITIONS=144} [2024-06-28 03:37:04,680 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 138 predicate places. [2024-06-28 03:37:04,680 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 144 transitions, 1632 flow [2024-06-28 03:37:04,680 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 03:37:04,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:04,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:04,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-28 03:37:04,681 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 03:37:04,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:04,681 INFO L85 PathProgramCache]: Analyzing trace with hash -189347099, now seen corresponding path program 8 times [2024-06-28 03:37:04,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:04,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158957182] [2024-06-28 03:37:04,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:04,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:04,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:05,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:05,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:05,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158957182] [2024-06-28 03:37:05,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158957182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:05,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:05,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:05,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124125672] [2024-06-28 03:37:05,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:05,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:05,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:05,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:05,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:05,410 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:05,410 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 144 transitions, 1632 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 03:37:05,410 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:05,411 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:05,411 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:05,700 INFO L124 PetriNetUnfolderBase]: 374/677 cut-off events. [2024-06-28 03:37:05,701 INFO L125 PetriNetUnfolderBase]: For 20785/20785 co-relation queries the response was YES. [2024-06-28 03:37:05,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4332 conditions, 677 events. 374/677 cut-off events. For 20785/20785 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3131 event pairs, 64 based on Foata normal form. 2/678 useless extension candidates. Maximal degree in co-relation 4256. Up to 567 conditions per place. [2024-06-28 03:37:05,704 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 122 selfloop transitions, 34 changer transitions 0/158 dead transitions. [2024-06-28 03:37:05,705 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 158 transitions, 2004 flow [2024-06-28 03:37:05,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:37:05,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:37:05,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-28 03:37:05,706 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36637931034482757 [2024-06-28 03:37:05,706 INFO L175 Difference]: Start difference. First operand has 166 places, 144 transitions, 1632 flow. Second operand 8 states and 85 transitions. [2024-06-28 03:37:05,706 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 158 transitions, 2004 flow [2024-06-28 03:37:05,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 158 transitions, 1924 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-28 03:37:05,781 INFO L231 Difference]: Finished difference. Result has 168 places, 145 transitions, 1659 flow [2024-06-28 03:37:05,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1558, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1659, PETRI_PLACES=168, PETRI_TRANSITIONS=145} [2024-06-28 03:37:05,782 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 140 predicate places. [2024-06-28 03:37:05,783 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 145 transitions, 1659 flow [2024-06-28 03:37:05,783 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 03:37:05,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:05,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:05,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-28 03:37:05,783 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 03:37:05,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:05,784 INFO L85 PathProgramCache]: Analyzing trace with hash 1059400683, now seen corresponding path program 3 times [2024-06-28 03:37:05,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:05,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247829293] [2024-06-28 03:37:05,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:05,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:06,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:06,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:06,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247829293] [2024-06-28 03:37:06,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247829293] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:06,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:06,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:06,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802920285] [2024-06-28 03:37:06,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:06,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:06,410 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:06,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:06,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:06,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:06,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 145 transitions, 1659 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 03:37:06,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:06,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:06,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:06,740 INFO L124 PetriNetUnfolderBase]: 372/674 cut-off events. [2024-06-28 03:37:06,740 INFO L125 PetriNetUnfolderBase]: For 17353/17353 co-relation queries the response was YES. [2024-06-28 03:37:06,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4208 conditions, 674 events. 372/674 cut-off events. For 17353/17353 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3113 event pairs, 62 based on Foata normal form. 1/674 useless extension candidates. Maximal degree in co-relation 4131. Up to 555 conditions per place. [2024-06-28 03:37:06,744 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 113 selfloop transitions, 43 changer transitions 0/158 dead transitions. [2024-06-28 03:37:06,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 158 transitions, 2007 flow [2024-06-28 03:37:06,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:37:06,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:37:06,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 86 transitions. [2024-06-28 03:37:06,745 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3706896551724138 [2024-06-28 03:37:06,745 INFO L175 Difference]: Start difference. First operand has 168 places, 145 transitions, 1659 flow. Second operand 8 states and 86 transitions. [2024-06-28 03:37:06,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 158 transitions, 2007 flow [2024-06-28 03:37:06,796 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 158 transitions, 1920 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:37:06,798 INFO L231 Difference]: Finished difference. Result has 170 places, 145 transitions, 1678 flow [2024-06-28 03:37:06,798 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1678, PETRI_PLACES=170, PETRI_TRANSITIONS=145} [2024-06-28 03:37:06,798 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 142 predicate places. [2024-06-28 03:37:06,798 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 145 transitions, 1678 flow [2024-06-28 03:37:06,799 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 03:37:06,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:06,799 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:06,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-28 03:37:06,799 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 03:37:06,799 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:06,799 INFO L85 PathProgramCache]: Analyzing trace with hash 582599191, now seen corresponding path program 2 times [2024-06-28 03:37:06,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:06,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171764852] [2024-06-28 03:37:06,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:06,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:06,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:07,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:07,389 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:07,389 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171764852] [2024-06-28 03:37:07,389 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171764852] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:07,389 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:07,389 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:07,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013131767] [2024-06-28 03:37:07,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:07,389 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:07,390 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:07,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:07,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:07,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:07,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 145 transitions, 1678 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 03:37:07,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:07,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:07,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:07,687 INFO L124 PetriNetUnfolderBase]: 384/694 cut-off events. [2024-06-28 03:37:07,687 INFO L125 PetriNetUnfolderBase]: For 17039/17039 co-relation queries the response was YES. [2024-06-28 03:37:07,689 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4297 conditions, 694 events. 384/694 cut-off events. For 17039/17039 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3240 event pairs, 49 based on Foata normal form. 2/695 useless extension candidates. Maximal degree in co-relation 4219. Up to 573 conditions per place. [2024-06-28 03:37:07,690 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 124 selfloop transitions, 38 changer transitions 0/164 dead transitions. [2024-06-28 03:37:07,690 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 164 transitions, 2088 flow [2024-06-28 03:37:07,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:07,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:07,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 03:37:07,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36398467432950193 [2024-06-28 03:37:07,691 INFO L175 Difference]: Start difference. First operand has 170 places, 145 transitions, 1678 flow. Second operand 9 states and 95 transitions. [2024-06-28 03:37:07,691 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 164 transitions, 2088 flow [2024-06-28 03:37:07,744 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 164 transitions, 1996 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-28 03:37:07,746 INFO L231 Difference]: Finished difference. Result has 172 places, 149 transitions, 1723 flow [2024-06-28 03:37:07,746 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1586, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1723, PETRI_PLACES=172, PETRI_TRANSITIONS=149} [2024-06-28 03:37:07,747 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 144 predicate places. [2024-06-28 03:37:07,747 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 149 transitions, 1723 flow [2024-06-28 03:37:07,747 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 03:37:07,747 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:07,747 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:07,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-28 03:37:07,747 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 03:37:07,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:07,748 INFO L85 PathProgramCache]: Analyzing trace with hash -291858589, now seen corresponding path program 3 times [2024-06-28 03:37:07,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:07,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1601229501] [2024-06-28 03:37:07,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:07,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:08,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:08,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:08,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1601229501] [2024-06-28 03:37:08,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1601229501] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:08,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:08,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:08,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400987110] [2024-06-28 03:37:08,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:08,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:08,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:08,338 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:08,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:08,404 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:08,404 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 149 transitions, 1723 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 03:37:08,404 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:08,404 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:08,404 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:08,684 INFO L124 PetriNetUnfolderBase]: 396/714 cut-off events. [2024-06-28 03:37:08,685 INFO L125 PetriNetUnfolderBase]: For 16498/16498 co-relation queries the response was YES. [2024-06-28 03:37:08,687 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4403 conditions, 714 events. 396/714 cut-off events. For 16498/16498 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3357 event pairs, 46 based on Foata normal form. 2/715 useless extension candidates. Maximal degree in co-relation 4325. Up to 464 conditions per place. [2024-06-28 03:37:08,689 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 97 selfloop transitions, 69 changer transitions 0/168 dead transitions. [2024-06-28 03:37:08,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 168 transitions, 2221 flow [2024-06-28 03:37:08,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:08,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:08,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-28 03:37:08,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3793103448275862 [2024-06-28 03:37:08,690 INFO L175 Difference]: Start difference. First operand has 172 places, 149 transitions, 1723 flow. Second operand 9 states and 99 transitions. [2024-06-28 03:37:08,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 168 transitions, 2221 flow [2024-06-28 03:37:08,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 168 transitions, 2124 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-28 03:37:08,739 INFO L231 Difference]: Finished difference. Result has 173 places, 153 transitions, 1824 flow [2024-06-28 03:37:08,740 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1626, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1824, PETRI_PLACES=173, PETRI_TRANSITIONS=153} [2024-06-28 03:37:08,740 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 145 predicate places. [2024-06-28 03:37:08,740 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 153 transitions, 1824 flow [2024-06-28 03:37:08,740 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 03:37:08,740 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:08,740 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:08,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-28 03:37:08,740 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 03:37:08,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:08,741 INFO L85 PathProgramCache]: Analyzing trace with hash -291851831, now seen corresponding path program 2 times [2024-06-28 03:37:08,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:08,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706979050] [2024-06-28 03:37:08,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:08,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:08,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:09,282 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 03:37:09,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:09,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706979050] [2024-06-28 03:37:09,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706979050] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:09,282 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:09,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:09,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843327297] [2024-06-28 03:37:09,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:09,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:09,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:09,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:09,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:09,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:09,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 153 transitions, 1824 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 03:37:09,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:09,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:09,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:09,592 INFO L124 PetriNetUnfolderBase]: 412/753 cut-off events. [2024-06-28 03:37:09,592 INFO L125 PetriNetUnfolderBase]: For 24377/24377 co-relation queries the response was YES. [2024-06-28 03:37:09,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4565 conditions, 753 events. 412/753 cut-off events. For 24377/24377 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3617 event pairs, 56 based on Foata normal form. 14/766 useless extension candidates. Maximal degree in co-relation 4487. Up to 433 conditions per place. [2024-06-28 03:37:09,596 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 90 selfloop transitions, 53 changer transitions 27/172 dead transitions. [2024-06-28 03:37:09,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 172 transitions, 2264 flow [2024-06-28 03:37:09,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:09,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:09,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 03:37:09,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38697318007662834 [2024-06-28 03:37:09,597 INFO L175 Difference]: Start difference. First operand has 173 places, 153 transitions, 1824 flow. Second operand 9 states and 101 transitions. [2024-06-28 03:37:09,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 172 transitions, 2264 flow [2024-06-28 03:37:09,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 172 transitions, 2128 flow, removed 18 selfloop flow, removed 6 redundant places. [2024-06-28 03:37:09,652 INFO L231 Difference]: Finished difference. Result has 177 places, 132 transitions, 1576 flow [2024-06-28 03:37:09,652 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1688, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1576, PETRI_PLACES=177, PETRI_TRANSITIONS=132} [2024-06-28 03:37:09,652 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 149 predicate places. [2024-06-28 03:37:09,652 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 132 transitions, 1576 flow [2024-06-28 03:37:09,652 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 03:37:09,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:09,652 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:09,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-28 03:37:09,652 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 03:37:09,653 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:09,653 INFO L85 PathProgramCache]: Analyzing trace with hash -292036529, now seen corresponding path program 9 times [2024-06-28 03:37:09,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:09,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348257746] [2024-06-28 03:37:09,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:09,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:09,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:10,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:10,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:10,186 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348257746] [2024-06-28 03:37:10,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348257746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:10,186 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:10,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-28 03:37:10,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885650191] [2024-06-28 03:37:10,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:10,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-28 03:37:10,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:10,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-28 03:37:10,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-28 03:37:10,226 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:10,226 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 132 transitions, 1576 flow. Second operand has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:10,227 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:10,227 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:10,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:10,434 INFO L124 PetriNetUnfolderBase]: 330/631 cut-off events. [2024-06-28 03:37:10,434 INFO L125 PetriNetUnfolderBase]: For 17777/17777 co-relation queries the response was YES. [2024-06-28 03:37:10,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3951 conditions, 631 events. 330/631 cut-off events. For 17777/17777 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3071 event pairs, 52 based on Foata normal form. 2/632 useless extension candidates. Maximal degree in co-relation 3871. Up to 514 conditions per place. [2024-06-28 03:37:10,438 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 104 selfloop transitions, 39 changer transitions 0/145 dead transitions. [2024-06-28 03:37:10,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 145 transitions, 1912 flow [2024-06-28 03:37:10,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:37:10,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:37:10,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 85 transitions. [2024-06-28 03:37:10,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36637931034482757 [2024-06-28 03:37:10,440 INFO L175 Difference]: Start difference. First operand has 177 places, 132 transitions, 1576 flow. Second operand 8 states and 85 transitions. [2024-06-28 03:37:10,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 145 transitions, 1912 flow [2024-06-28 03:37:10,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 145 transitions, 1680 flow, removed 19 selfloop flow, removed 17 redundant places. [2024-06-28 03:37:10,482 INFO L231 Difference]: Finished difference. Result has 166 places, 133 transitions, 1448 flow [2024-06-28 03:37:10,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1448, PETRI_PLACES=166, PETRI_TRANSITIONS=133} [2024-06-28 03:37:10,483 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 138 predicate places. [2024-06-28 03:37:10,483 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 133 transitions, 1448 flow [2024-06-28 03:37:10,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.444444444444445) internal successors, (58), 9 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:10,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:10,483 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:10,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-28 03:37:10,483 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 03:37:10,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:10,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1630977591, now seen corresponding path program 3 times [2024-06-28 03:37:10,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:10,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572244325] [2024-06-28 03:37:10,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:10,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:10,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:11,068 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 03:37:11,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:11,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572244325] [2024-06-28 03:37:11,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572244325] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:11,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:11,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:11,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769905009] [2024-06-28 03:37:11,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:11,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:11,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:11,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:11,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:11,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:11,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 133 transitions, 1448 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 03:37:11,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:11,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:11,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:11,392 INFO L124 PetriNetUnfolderBase]: 334/639 cut-off events. [2024-06-28 03:37:11,392 INFO L125 PetriNetUnfolderBase]: For 14584/14584 co-relation queries the response was YES. [2024-06-28 03:37:11,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3801 conditions, 639 events. 334/639 cut-off events. For 14584/14584 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3142 event pairs, 114 based on Foata normal form. 2/640 useless extension candidates. Maximal degree in co-relation 3727. Up to 584 conditions per place. [2024-06-28 03:37:11,395 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 124 selfloop transitions, 21 changer transitions 0/147 dead transitions. [2024-06-28 03:37:11,395 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 147 transitions, 1862 flow [2024-06-28 03:37:11,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:11,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:11,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-28 03:37:11,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3413793103448276 [2024-06-28 03:37:11,396 INFO L175 Difference]: Start difference. First operand has 166 places, 133 transitions, 1448 flow. Second operand 10 states and 99 transitions. [2024-06-28 03:37:11,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 147 transitions, 1862 flow [2024-06-28 03:37:11,435 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 147 transitions, 1768 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-28 03:37:11,437 INFO L231 Difference]: Finished difference. Result has 170 places, 134 transitions, 1426 flow [2024-06-28 03:37:11,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1356, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1426, PETRI_PLACES=170, PETRI_TRANSITIONS=134} [2024-06-28 03:37:11,438 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 142 predicate places. [2024-06-28 03:37:11,438 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 134 transitions, 1426 flow [2024-06-28 03:37:11,438 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 03:37:11,438 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:11,438 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:11,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-28 03:37:11,439 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 03:37:11,439 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:11,439 INFO L85 PathProgramCache]: Analyzing trace with hash -1639258559, now seen corresponding path program 4 times [2024-06-28 03:37:11,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:11,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171104947] [2024-06-28 03:37:11,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:11,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:12,088 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 03:37:12,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:12,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171104947] [2024-06-28 03:37:12,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [171104947] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:12,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:12,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:12,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260957647] [2024-06-28 03:37:12,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:12,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:12,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:12,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:12,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:12,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:12,155 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 134 transitions, 1426 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 03:37:12,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:12,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:12,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:12,434 INFO L124 PetriNetUnfolderBase]: 330/633 cut-off events. [2024-06-28 03:37:12,434 INFO L125 PetriNetUnfolderBase]: For 13013/13013 co-relation queries the response was YES. [2024-06-28 03:37:12,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3631 conditions, 633 events. 330/633 cut-off events. For 13013/13013 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3106 event pairs, 116 based on Foata normal form. 2/634 useless extension candidates. Maximal degree in co-relation 3556. Up to 579 conditions per place. [2024-06-28 03:37:12,437 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 121 selfloop transitions, 21 changer transitions 0/144 dead transitions. [2024-06-28 03:37:12,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 144 transitions, 1736 flow [2024-06-28 03:37:12,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:12,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:12,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 90 transitions. [2024-06-28 03:37:12,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-28 03:37:12,439 INFO L175 Difference]: Start difference. First operand has 170 places, 134 transitions, 1426 flow. Second operand 9 states and 90 transitions. [2024-06-28 03:37:12,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 144 transitions, 1736 flow [2024-06-28 03:37:12,479 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 144 transitions, 1660 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 03:37:12,481 INFO L231 Difference]: Finished difference. Result has 171 places, 134 transitions, 1397 flow [2024-06-28 03:37:12,481 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1350, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1397, PETRI_PLACES=171, PETRI_TRANSITIONS=134} [2024-06-28 03:37:12,481 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 143 predicate places. [2024-06-28 03:37:12,482 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 134 transitions, 1397 flow [2024-06-28 03:37:12,482 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 03:37:12,482 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:12,482 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:12,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-28 03:37:12,482 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 03:37:12,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:12,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1630680921, now seen corresponding path program 4 times [2024-06-28 03:37:12,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:12,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493299773] [2024-06-28 03:37:12,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:12,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:12,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:13,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:13,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:13,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493299773] [2024-06-28 03:37:13,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493299773] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:13,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:13,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:13,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809039112] [2024-06-28 03:37:13,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:13,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:13,057 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:13,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:13,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:13,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:13,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 134 transitions, 1397 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 03:37:13,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:13,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:13,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:13,389 INFO L124 PetriNetUnfolderBase]: 370/713 cut-off events. [2024-06-28 03:37:13,389 INFO L125 PetriNetUnfolderBase]: For 21509/21509 co-relation queries the response was YES. [2024-06-28 03:37:13,391 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4394 conditions, 713 events. 370/713 cut-off events. For 21509/21509 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3522 event pairs, 128 based on Foata normal form. 2/714 useless extension candidates. Maximal degree in co-relation 4318. Up to 573 conditions per place. [2024-06-28 03:37:13,393 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 129 selfloop transitions, 23 changer transitions 0/154 dead transitions. [2024-06-28 03:37:13,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 154 transitions, 1895 flow [2024-06-28 03:37:13,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:13,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:13,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 03:37:13,399 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35517241379310344 [2024-06-28 03:37:13,399 INFO L175 Difference]: Start difference. First operand has 171 places, 134 transitions, 1397 flow. Second operand 10 states and 103 transitions. [2024-06-28 03:37:13,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 154 transitions, 1895 flow [2024-06-28 03:37:13,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 154 transitions, 1835 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-28 03:37:13,454 INFO L231 Difference]: Finished difference. Result has 172 places, 136 transitions, 1437 flow [2024-06-28 03:37:13,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1337, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1437, PETRI_PLACES=172, PETRI_TRANSITIONS=136} [2024-06-28 03:37:13,454 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 144 predicate places. [2024-06-28 03:37:13,454 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 136 transitions, 1437 flow [2024-06-28 03:37:13,455 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 03:37:13,455 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:13,455 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:13,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-28 03:37:13,455 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 03:37:13,455 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:13,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1867337649, now seen corresponding path program 10 times [2024-06-28 03:37:13,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:13,455 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050153243] [2024-06-28 03:37:13,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:13,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:13,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:14,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:14,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:14,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050153243] [2024-06-28 03:37:14,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050153243] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:14,032 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:14,032 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:14,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013904392] [2024-06-28 03:37:14,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:14,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:14,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:14,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:14,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:14,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:14,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 136 transitions, 1437 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 03:37:14,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:14,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:14,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:14,269 INFO L124 PetriNetUnfolderBase]: 367/707 cut-off events. [2024-06-28 03:37:14,270 INFO L125 PetriNetUnfolderBase]: For 21238/21238 co-relation queries the response was YES. [2024-06-28 03:37:14,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4328 conditions, 707 events. 367/707 cut-off events. For 21238/21238 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3494 event pairs, 77 based on Foata normal form. 2/705 useless extension candidates. Maximal degree in co-relation 4251. Up to 585 conditions per place. [2024-06-28 03:37:14,273 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 104 selfloop transitions, 40 changer transitions 0/146 dead transitions. [2024-06-28 03:37:14,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 146 transitions, 1751 flow [2024-06-28 03:37:14,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-28 03:37:14,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-28 03:37:14,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 84 transitions. [2024-06-28 03:37:14,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3620689655172414 [2024-06-28 03:37:14,274 INFO L175 Difference]: Start difference. First operand has 172 places, 136 transitions, 1437 flow. Second operand 8 states and 84 transitions. [2024-06-28 03:37:14,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 146 transitions, 1751 flow [2024-06-28 03:37:14,326 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 146 transitions, 1697 flow, removed 14 selfloop flow, removed 6 redundant places. [2024-06-28 03:37:14,327 INFO L231 Difference]: Finished difference. Result has 174 places, 136 transitions, 1467 flow [2024-06-28 03:37:14,328 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1383, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1467, PETRI_PLACES=174, PETRI_TRANSITIONS=136} [2024-06-28 03:37:14,328 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 146 predicate places. [2024-06-28 03:37:14,328 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 136 transitions, 1467 flow [2024-06-28 03:37:14,328 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 03:37:14,329 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:14,329 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:14,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-28 03:37:14,329 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 03:37:14,329 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:14,329 INFO L85 PathProgramCache]: Analyzing trace with hash -1639251801, now seen corresponding path program 5 times [2024-06-28 03:37:14,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:14,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680168499] [2024-06-28 03:37:14,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:14,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:14,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:14,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:14,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:14,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680168499] [2024-06-28 03:37:14,915 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680168499] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:14,915 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:14,915 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:14,915 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202227744] [2024-06-28 03:37:14,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:14,915 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:14,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:14,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:14,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:14,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:14,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 136 transitions, 1467 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 03:37:14,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:14,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:14,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:15,227 INFO L124 PetriNetUnfolderBase]: 351/680 cut-off events. [2024-06-28 03:37:15,227 INFO L125 PetriNetUnfolderBase]: For 20820/20820 co-relation queries the response was YES. [2024-06-28 03:37:15,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3816 conditions, 680 events. 351/680 cut-off events. For 20820/20820 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3372 event pairs, 119 based on Foata normal form. 12/691 useless extension candidates. Maximal degree in co-relation 3737. Up to 592 conditions per place. [2024-06-28 03:37:15,231 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 127 selfloop transitions, 14 changer transitions 8/151 dead transitions. [2024-06-28 03:37:15,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 151 transitions, 1833 flow [2024-06-28 03:37:15,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:15,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:15,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 93 transitions. [2024-06-28 03:37:15,232 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3563218390804598 [2024-06-28 03:37:15,232 INFO L175 Difference]: Start difference. First operand has 174 places, 136 transitions, 1467 flow. Second operand 9 states and 93 transitions. [2024-06-28 03:37:15,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 151 transitions, 1833 flow [2024-06-28 03:37:15,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 151 transitions, 1683 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-28 03:37:15,277 INFO L231 Difference]: Finished difference. Result has 175 places, 133 transitions, 1323 flow [2024-06-28 03:37:15,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1317, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1323, PETRI_PLACES=175, PETRI_TRANSITIONS=133} [2024-06-28 03:37:15,278 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 147 predicate places. [2024-06-28 03:37:15,278 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 133 transitions, 1323 flow [2024-06-28 03:37:15,278 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 03:37:15,278 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:15,278 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:15,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-28 03:37:15,278 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 03:37:15,279 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:15,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1867152951, now seen corresponding path program 6 times [2024-06-28 03:37:15,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:15,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570030711] [2024-06-28 03:37:15,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:15,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:15,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:15,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:15,885 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:15,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570030711] [2024-06-28 03:37:15,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570030711] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:15,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:15,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:15,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329681931] [2024-06-28 03:37:15,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:15,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:15,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:15,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:15,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:15,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:15,952 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 133 transitions, 1323 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 03:37:15,952 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:15,952 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:15,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:16,150 INFO L124 PetriNetUnfolderBase]: 338/660 cut-off events. [2024-06-28 03:37:16,150 INFO L125 PetriNetUnfolderBase]: For 19452/19452 co-relation queries the response was YES. [2024-06-28 03:37:16,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3473 conditions, 660 events. 338/660 cut-off events. For 19452/19452 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3266 event pairs, 68 based on Foata normal form. 12/668 useless extension candidates. Maximal degree in co-relation 3394. Up to 385 conditions per place. [2024-06-28 03:37:16,153 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 91 selfloop transitions, 49 changer transitions 8/150 dead transitions. [2024-06-28 03:37:16,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 150 transitions, 1695 flow [2024-06-28 03:37:16,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:16,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:16,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-28 03:37:16,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3946360153256705 [2024-06-28 03:37:16,154 INFO L175 Difference]: Start difference. First operand has 175 places, 133 transitions, 1323 flow. Second operand 9 states and 103 transitions. [2024-06-28 03:37:16,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 150 transitions, 1695 flow [2024-06-28 03:37:16,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 150 transitions, 1627 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:37:16,213 INFO L231 Difference]: Finished difference. Result has 173 places, 130 transitions, 1334 flow [2024-06-28 03:37:16,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1257, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1334, PETRI_PLACES=173, PETRI_TRANSITIONS=130} [2024-06-28 03:37:16,213 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 145 predicate places. [2024-06-28 03:37:16,213 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 130 transitions, 1334 flow [2024-06-28 03:37:16,214 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 03:37:16,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:16,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:16,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-28 03:37:16,214 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 03:37:16,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:16,215 INFO L85 PathProgramCache]: Analyzing trace with hash 854769007, now seen corresponding path program 1 times [2024-06-28 03:37:16,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:16,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123719361] [2024-06-28 03:37:16,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:16,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:16,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:16,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:16,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:16,755 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123719361] [2024-06-28 03:37:16,755 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123719361] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:16,755 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:16,756 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:16,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38819307] [2024-06-28 03:37:16,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:16,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:16,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:16,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:16,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:16,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:16,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 130 transitions, 1334 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 03:37:16,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:16,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:16,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:17,069 INFO L124 PetriNetUnfolderBase]: 312/614 cut-off events. [2024-06-28 03:37:17,069 INFO L125 PetriNetUnfolderBase]: For 12406/12406 co-relation queries the response was YES. [2024-06-28 03:37:17,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3317 conditions, 614 events. 312/614 cut-off events. For 12406/12406 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3076 event pairs, 65 based on Foata normal form. 2/615 useless extension candidates. Maximal degree in co-relation 3239. Up to 529 conditions per place. [2024-06-28 03:37:17,073 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 123 selfloop transitions, 24 changer transitions 0/149 dead transitions. [2024-06-28 03:37:17,073 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 149 transitions, 1702 flow [2024-06-28 03:37:17,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:17,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:17,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 03:37:17,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35517241379310344 [2024-06-28 03:37:17,074 INFO L175 Difference]: Start difference. First operand has 173 places, 130 transitions, 1334 flow. Second operand 10 states and 103 transitions. [2024-06-28 03:37:17,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 149 transitions, 1702 flow [2024-06-28 03:37:17,114 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 149 transitions, 1534 flow, removed 12 selfloop flow, removed 10 redundant places. [2024-06-28 03:37:17,116 INFO L231 Difference]: Finished difference. Result has 173 places, 131 transitions, 1248 flow [2024-06-28 03:37:17,116 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1248, PETRI_PLACES=173, PETRI_TRANSITIONS=131} [2024-06-28 03:37:17,116 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 145 predicate places. [2024-06-28 03:37:17,116 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 131 transitions, 1248 flow [2024-06-28 03:37:17,116 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 03:37:17,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:17,116 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:17,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-28 03:37:17,116 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 03:37:17,117 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:17,117 INFO L85 PathProgramCache]: Analyzing trace with hash -143066201, now seen corresponding path program 2 times [2024-06-28 03:37:17,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:17,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638080972] [2024-06-28 03:37:17,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:17,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:17,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:17,707 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:17,707 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:17,707 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638080972] [2024-06-28 03:37:17,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638080972] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:17,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:17,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:17,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66329445] [2024-06-28 03:37:17,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:17,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:17,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:17,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:17,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:17,803 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:17,803 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 131 transitions, 1248 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 03:37:17,803 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:17,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:17,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:18,020 INFO L124 PetriNetUnfolderBase]: 316/622 cut-off events. [2024-06-28 03:37:18,020 INFO L125 PetriNetUnfolderBase]: For 13377/13377 co-relation queries the response was YES. [2024-06-28 03:37:18,023 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3261 conditions, 622 events. 316/622 cut-off events. For 13377/13377 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3124 event pairs, 41 based on Foata normal form. 2/623 useless extension candidates. Maximal degree in co-relation 3184. Up to 502 conditions per place. [2024-06-28 03:37:18,025 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 122 selfloop transitions, 26 changer transitions 0/150 dead transitions. [2024-06-28 03:37:18,025 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 150 transitions, 1618 flow [2024-06-28 03:37:18,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:18,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:18,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-28 03:37:18,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-28 03:37:18,026 INFO L175 Difference]: Start difference. First operand has 173 places, 131 transitions, 1248 flow. Second operand 10 states and 100 transitions. [2024-06-28 03:37:18,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 150 transitions, 1618 flow [2024-06-28 03:37:18,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 150 transitions, 1542 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 03:37:18,074 INFO L231 Difference]: Finished difference. Result has 175 places, 132 transitions, 1260 flow [2024-06-28 03:37:18,074 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1260, PETRI_PLACES=175, PETRI_TRANSITIONS=132} [2024-06-28 03:37:18,075 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 147 predicate places. [2024-06-28 03:37:18,075 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 132 transitions, 1260 flow [2024-06-28 03:37:18,075 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 03:37:18,075 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:18,075 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:18,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-28 03:37:18,075 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 03:37:18,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:18,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1448763331, now seen corresponding path program 3 times [2024-06-28 03:37:18,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:18,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328049746] [2024-06-28 03:37:18,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:18,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:18,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:18,615 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:18,615 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:18,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328049746] [2024-06-28 03:37:18,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328049746] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:18,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:18,615 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:18,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1372034858] [2024-06-28 03:37:18,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:18,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:18,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:18,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:18,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:18,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:18,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 132 transitions, 1260 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 03:37:18,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:18,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:18,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:18,915 INFO L124 PetriNetUnfolderBase]: 320/630 cut-off events. [2024-06-28 03:37:18,915 INFO L125 PetriNetUnfolderBase]: For 13435/13435 co-relation queries the response was YES. [2024-06-28 03:37:18,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3312 conditions, 630 events. 320/630 cut-off events. For 13435/13435 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3167 event pairs, 69 based on Foata normal form. 2/631 useless extension candidates. Maximal degree in co-relation 3234. Up to 543 conditions per place. [2024-06-28 03:37:18,918 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 120 selfloop transitions, 28 changer transitions 0/150 dead transitions. [2024-06-28 03:37:18,918 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 150 transitions, 1634 flow [2024-06-28 03:37:18,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:18,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:18,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-28 03:37:18,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35517241379310344 [2024-06-28 03:37:18,920 INFO L175 Difference]: Start difference. First operand has 175 places, 132 transitions, 1260 flow. Second operand 10 states and 103 transitions. [2024-06-28 03:37:18,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 150 transitions, 1634 flow [2024-06-28 03:37:18,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 150 transitions, 1556 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-28 03:37:18,965 INFO L231 Difference]: Finished difference. Result has 177 places, 133 transitions, 1277 flow [2024-06-28 03:37:18,965 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1182, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1277, PETRI_PLACES=177, PETRI_TRANSITIONS=133} [2024-06-28 03:37:18,965 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 149 predicate places. [2024-06-28 03:37:18,965 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 133 transitions, 1277 flow [2024-06-28 03:37:18,965 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 03:37:18,966 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:18,966 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:18,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-28 03:37:18,966 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 03:37:18,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:18,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1731486545, now seen corresponding path program 4 times [2024-06-28 03:37:18,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:18,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347940822] [2024-06-28 03:37:18,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:18,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:18,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:19,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:19,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:19,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347940822] [2024-06-28 03:37:19,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347940822] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:19,636 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:19,637 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:19,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1052834210] [2024-06-28 03:37:19,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:19,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:19,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:19,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:19,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:19,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:19,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 133 transitions, 1277 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 03:37:19,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:19,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:19,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:19,943 INFO L124 PetriNetUnfolderBase]: 324/638 cut-off events. [2024-06-28 03:37:19,943 INFO L125 PetriNetUnfolderBase]: For 14890/14890 co-relation queries the response was YES. [2024-06-28 03:37:19,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3357 conditions, 638 events. 324/638 cut-off events. For 14890/14890 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3217 event pairs, 68 based on Foata normal form. 2/639 useless extension candidates. Maximal degree in co-relation 3278. Up to 535 conditions per place. [2024-06-28 03:37:19,947 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 121 selfloop transitions, 28 changer transitions 0/151 dead transitions. [2024-06-28 03:37:19,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 151 transitions, 1653 flow [2024-06-28 03:37:19,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:19,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:19,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:37:19,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3586206896551724 [2024-06-28 03:37:19,948 INFO L175 Difference]: Start difference. First operand has 177 places, 133 transitions, 1277 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:37:19,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 151 transitions, 1653 flow [2024-06-28 03:37:19,998 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 151 transitions, 1570 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-28 03:37:19,999 INFO L231 Difference]: Finished difference. Result has 179 places, 134 transitions, 1290 flow [2024-06-28 03:37:20,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1194, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1290, PETRI_PLACES=179, PETRI_TRANSITIONS=134} [2024-06-28 03:37:20,000 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 151 predicate places. [2024-06-28 03:37:20,000 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 134 transitions, 1290 flow [2024-06-28 03:37:20,000 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 03:37:20,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:20,001 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:20,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-28 03:37:20,001 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 03:37:20,001 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:20,001 INFO L85 PathProgramCache]: Analyzing trace with hash -2110427441, now seen corresponding path program 5 times [2024-06-28 03:37:20,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:20,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1196427570] [2024-06-28 03:37:20,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:20,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:20,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:20,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:20,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:20,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1196427570] [2024-06-28 03:37:20,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1196427570] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:20,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:20,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:20,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875537000] [2024-06-28 03:37:20,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:20,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:20,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:20,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:20,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:20,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:20,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 134 transitions, 1290 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 03:37:20,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:20,708 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:20,708 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:20,940 INFO L124 PetriNetUnfolderBase]: 328/646 cut-off events. [2024-06-28 03:37:20,940 INFO L125 PetriNetUnfolderBase]: For 15556/15556 co-relation queries the response was YES. [2024-06-28 03:37:20,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3410 conditions, 646 events. 328/646 cut-off events. For 15556/15556 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3277 event pairs, 55 based on Foata normal form. 2/647 useless extension candidates. Maximal degree in co-relation 3330. Up to 561 conditions per place. [2024-06-28 03:37:20,944 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 126 selfloop transitions, 24 changer transitions 0/152 dead transitions. [2024-06-28 03:37:20,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 152 transitions, 1670 flow [2024-06-28 03:37:20,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:20,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:20,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:37:20,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3586206896551724 [2024-06-28 03:37:20,945 INFO L175 Difference]: Start difference. First operand has 179 places, 134 transitions, 1290 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:37:20,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 152 transitions, 1670 flow [2024-06-28 03:37:20,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 152 transitions, 1584 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-28 03:37:20,997 INFO L231 Difference]: Finished difference. Result has 181 places, 135 transitions, 1294 flow [2024-06-28 03:37:20,997 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1204, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1294, PETRI_PLACES=181, PETRI_TRANSITIONS=135} [2024-06-28 03:37:20,997 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 153 predicate places. [2024-06-28 03:37:20,998 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 135 transitions, 1294 flow [2024-06-28 03:37:20,998 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 03:37:20,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:20,998 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:20,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-28 03:37:20,998 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 03:37:20,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:20,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1904151871, now seen corresponding path program 6 times [2024-06-28 03:37:20,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:20,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812171950] [2024-06-28 03:37:20,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:20,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:21,656 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 03:37:21,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:21,656 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812171950] [2024-06-28 03:37:21,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812171950] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:21,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:21,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:21,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169627897] [2024-06-28 03:37:21,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:21,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:21,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:21,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:21,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:21,741 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:21,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 135 transitions, 1294 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 03:37:21,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:21,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:21,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:21,981 INFO L124 PetriNetUnfolderBase]: 332/654 cut-off events. [2024-06-28 03:37:21,981 INFO L125 PetriNetUnfolderBase]: For 16346/16346 co-relation queries the response was YES. [2024-06-28 03:37:21,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3449 conditions, 654 events. 332/654 cut-off events. For 16346/16346 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3343 event pairs, 59 based on Foata normal form. 2/655 useless extension candidates. Maximal degree in co-relation 3368. Up to 567 conditions per place. [2024-06-28 03:37:21,985 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 122 selfloop transitions, 28 changer transitions 0/152 dead transitions. [2024-06-28 03:37:21,985 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 152 transitions, 1676 flow [2024-06-28 03:37:21,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:21,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:21,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 104 transitions. [2024-06-28 03:37:21,986 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3586206896551724 [2024-06-28 03:37:21,986 INFO L175 Difference]: Start difference. First operand has 181 places, 135 transitions, 1294 flow. Second operand 10 states and 104 transitions. [2024-06-28 03:37:21,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 152 transitions, 1676 flow [2024-06-28 03:37:22,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 152 transitions, 1596 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-28 03:37:22,042 INFO L231 Difference]: Finished difference. Result has 183 places, 136 transitions, 1315 flow [2024-06-28 03:37:22,043 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1214, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1315, PETRI_PLACES=183, PETRI_TRANSITIONS=136} [2024-06-28 03:37:22,043 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 155 predicate places. [2024-06-28 03:37:22,043 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 136 transitions, 1315 flow [2024-06-28 03:37:22,043 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 03:37:22,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:22,043 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:22,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-28 03:37:22,043 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 03:37:22,044 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:22,044 INFO L85 PathProgramCache]: Analyzing trace with hash 1904148151, now seen corresponding path program 7 times [2024-06-28 03:37:22,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:22,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1661190542] [2024-06-28 03:37:22,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:22,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:22,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:22,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:22,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:22,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1661190542] [2024-06-28 03:37:22,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1661190542] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:22,628 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:22,628 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:22,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993409916] [2024-06-28 03:37:22,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:22,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:22,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:22,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:22,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:22,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:22,708 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 136 transitions, 1315 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 03:37:22,708 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:22,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:22,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:22,961 INFO L124 PetriNetUnfolderBase]: 336/662 cut-off events. [2024-06-28 03:37:22,961 INFO L125 PetriNetUnfolderBase]: For 17334/17334 co-relation queries the response was YES. [2024-06-28 03:37:22,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3506 conditions, 662 events. 336/662 cut-off events. For 17334/17334 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3395 event pairs, 59 based on Foata normal form. 2/663 useless extension candidates. Maximal degree in co-relation 3424. Up to 559 conditions per place. [2024-06-28 03:37:22,965 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 123 selfloop transitions, 28 changer transitions 0/153 dead transitions. [2024-06-28 03:37:22,965 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 153 transitions, 1699 flow [2024-06-28 03:37:22,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:22,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:22,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-28 03:37:22,966 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3620689655172414 [2024-06-28 03:37:22,967 INFO L175 Difference]: Start difference. First operand has 183 places, 136 transitions, 1315 flow. Second operand 10 states and 105 transitions. [2024-06-28 03:37:22,967 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 153 transitions, 1699 flow [2024-06-28 03:37:23,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 153 transitions, 1610 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-28 03:37:23,027 INFO L231 Difference]: Finished difference. Result has 185 places, 137 transitions, 1328 flow [2024-06-28 03:37:23,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1226, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1328, PETRI_PLACES=185, PETRI_TRANSITIONS=137} [2024-06-28 03:37:23,027 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 157 predicate places. [2024-06-28 03:37:23,027 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 137 transitions, 1328 flow [2024-06-28 03:37:23,028 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 03:37:23,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:23,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:23,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-28 03:37:23,028 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 03:37:23,029 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:23,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1269902655, now seen corresponding path program 8 times [2024-06-28 03:37:23,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:23,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825477428] [2024-06-28 03:37:23,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:23,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:23,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:23,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:23,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:23,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825477428] [2024-06-28 03:37:23,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825477428] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:23,583 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:23,583 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:23,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294889971] [2024-06-28 03:37:23,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:23,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:23,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:23,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:23,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:23,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:23,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 137 transitions, 1328 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 03:37:23,650 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:23,650 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:23,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:23,846 INFO L124 PetriNetUnfolderBase]: 340/671 cut-off events. [2024-06-28 03:37:23,846 INFO L125 PetriNetUnfolderBase]: For 18186/18186 co-relation queries the response was YES. [2024-06-28 03:37:23,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3560 conditions, 671 events. 340/671 cut-off events. For 18186/18186 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3448 event pairs, 61 based on Foata normal form. 2/672 useless extension candidates. Maximal degree in co-relation 3477. Up to 530 conditions per place. [2024-06-28 03:37:23,850 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 113 selfloop transitions, 39 changer transitions 0/154 dead transitions. [2024-06-28 03:37:23,850 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 154 transitions, 1718 flow [2024-06-28 03:37:23,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:23,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:23,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-28 03:37:23,851 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3689655172413793 [2024-06-28 03:37:23,851 INFO L175 Difference]: Start difference. First operand has 185 places, 137 transitions, 1328 flow. Second operand 10 states and 107 transitions. [2024-06-28 03:37:23,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 194 places, 154 transitions, 1718 flow [2024-06-28 03:37:23,910 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 154 transitions, 1626 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-28 03:37:23,912 INFO L231 Difference]: Finished difference. Result has 187 places, 138 transitions, 1362 flow [2024-06-28 03:37:23,912 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1236, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1362, PETRI_PLACES=187, PETRI_TRANSITIONS=138} [2024-06-28 03:37:23,912 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 159 predicate places. [2024-06-28 03:37:23,913 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 138 transitions, 1362 flow [2024-06-28 03:37:23,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 03:37:23,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:23,913 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:23,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-28 03:37:23,913 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 03:37:23,914 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:23,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1269898935, now seen corresponding path program 9 times [2024-06-28 03:37:23,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:23,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215427672] [2024-06-28 03:37:23,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:23,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:24,586 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 03:37:24,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:24,586 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215427672] [2024-06-28 03:37:24,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215427672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:24,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:24,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:24,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658956544] [2024-06-28 03:37:24,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:24,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:24,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:24,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:24,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:24,665 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:24,665 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 138 transitions, 1362 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 03:37:24,665 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:24,665 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:24,665 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:24,914 INFO L124 PetriNetUnfolderBase]: 380/751 cut-off events. [2024-06-28 03:37:24,914 INFO L125 PetriNetUnfolderBase]: For 32934/32934 co-relation queries the response was YES. [2024-06-28 03:37:24,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4544 conditions, 751 events. 380/751 cut-off events. For 32934/32934 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3915 event pairs, 81 based on Foata normal form. 2/752 useless extension candidates. Maximal degree in co-relation 4460. Up to 522 conditions per place. [2024-06-28 03:37:24,919 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 118 selfloop transitions, 41 changer transitions 0/161 dead transitions. [2024-06-28 03:37:24,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 161 transitions, 1940 flow [2024-06-28 03:37:24,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:24,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:24,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-28 03:37:24,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3896551724137931 [2024-06-28 03:37:24,920 INFO L175 Difference]: Start difference. First operand has 187 places, 138 transitions, 1362 flow. Second operand 10 states and 113 transitions. [2024-06-28 03:37:24,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 161 transitions, 1940 flow [2024-06-28 03:37:25,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 161 transitions, 1824 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-28 03:37:25,009 INFO L231 Difference]: Finished difference. Result has 189 places, 140 transitions, 1422 flow [2024-06-28 03:37:25,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1246, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1422, PETRI_PLACES=189, PETRI_TRANSITIONS=140} [2024-06-28 03:37:25,009 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 161 predicate places. [2024-06-28 03:37:25,009 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 140 transitions, 1422 flow [2024-06-28 03:37:25,009 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 03:37:25,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:25,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:25,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-28 03:37:25,010 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 03:37:25,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:25,010 INFO L85 PathProgramCache]: Analyzing trace with hash 1275409185, now seen corresponding path program 10 times [2024-06-28 03:37:25,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:25,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570006944] [2024-06-28 03:37:25,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:25,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:25,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:25,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:25,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:25,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570006944] [2024-06-28 03:37:25,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570006944] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:25,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:25,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:25,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062068568] [2024-06-28 03:37:25,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:25,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:25,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:25,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:25,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:25,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:25,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 140 transitions, 1422 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 03:37:25,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:25,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:25,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:26,003 INFO L124 PetriNetUnfolderBase]: 364/723 cut-off events. [2024-06-28 03:37:26,003 INFO L125 PetriNetUnfolderBase]: For 31180/31180 co-relation queries the response was YES. [2024-06-28 03:37:26,005 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3809 conditions, 723 events. 364/723 cut-off events. For 31180/31180 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3774 event pairs, 67 based on Foata normal form. 12/734 useless extension candidates. Maximal degree in co-relation 3724. Up to 540 conditions per place. [2024-06-28 03:37:26,007 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 111 selfloop transitions, 40 changer transitions 7/160 dead transitions. [2024-06-28 03:37:26,007 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 160 transitions, 1816 flow [2024-06-28 03:37:26,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:26,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:26,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-28 03:37:26,008 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38275862068965516 [2024-06-28 03:37:26,008 INFO L175 Difference]: Start difference. First operand has 189 places, 140 transitions, 1422 flow. Second operand 10 states and 111 transitions. [2024-06-28 03:37:26,008 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 160 transitions, 1816 flow [2024-06-28 03:37:26,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 160 transitions, 1679 flow, removed 39 selfloop flow, removed 7 redundant places. [2024-06-28 03:37:26,080 INFO L231 Difference]: Finished difference. Result has 192 places, 137 transitions, 1348 flow [2024-06-28 03:37:26,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1285, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=140, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1348, PETRI_PLACES=192, PETRI_TRANSITIONS=137} [2024-06-28 03:37:26,080 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 164 predicate places. [2024-06-28 03:37:26,080 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 137 transitions, 1348 flow [2024-06-28 03:37:26,080 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 03:37:26,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:26,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:26,080 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-28 03:37:26,081 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 03:37:26,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:26,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1275624387, now seen corresponding path program 1 times [2024-06-28 03:37:26,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:26,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486061438] [2024-06-28 03:37:26,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:26,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:26,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:26,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:26,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486061438] [2024-06-28 03:37:26,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486061438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:26,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:26,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:26,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432828236] [2024-06-28 03:37:26,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:26,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:26,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:26,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:26,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:26,683 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:26,683 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 137 transitions, 1348 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 03:37:26,683 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:26,683 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:26,683 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:26,888 INFO L124 PetriNetUnfolderBase]: 367/736 cut-off events. [2024-06-28 03:37:26,888 INFO L125 PetriNetUnfolderBase]: For 32696/32696 co-relation queries the response was YES. [2024-06-28 03:37:26,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4015 conditions, 736 events. 367/736 cut-off events. For 32696/32696 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3873 event pairs, 76 based on Foata normal form. 8/743 useless extension candidates. Maximal degree in co-relation 3929. Up to 492 conditions per place. [2024-06-28 03:37:26,893 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 112 selfloop transitions, 37 changer transitions 8/159 dead transitions. [2024-06-28 03:37:26,893 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 159 transitions, 1840 flow [2024-06-28 03:37:26,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:26,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:26,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-28 03:37:26,894 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38620689655172413 [2024-06-28 03:37:26,894 INFO L175 Difference]: Start difference. First operand has 192 places, 137 transitions, 1348 flow. Second operand 10 states and 112 transitions. [2024-06-28 03:37:26,894 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 159 transitions, 1840 flow [2024-06-28 03:37:26,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 159 transitions, 1735 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:37:26,988 INFO L231 Difference]: Finished difference. Result has 192 places, 134 transitions, 1290 flow [2024-06-28 03:37:26,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=100, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1290, PETRI_PLACES=192, PETRI_TRANSITIONS=134} [2024-06-28 03:37:26,989 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 164 predicate places. [2024-06-28 03:37:26,989 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 134 transitions, 1290 flow [2024-06-28 03:37:26,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 03:37:26,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:26,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:26,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-28 03:37:26,989 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 03:37:26,989 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:26,989 INFO L85 PathProgramCache]: Analyzing trace with hash 169178349, now seen corresponding path program 11 times [2024-06-28 03:37:26,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:26,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911907630] [2024-06-28 03:37:26,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:26,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:27,567 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 03:37:27,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:27,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911907630] [2024-06-28 03:37:27,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911907630] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:27,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:27,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:27,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547141274] [2024-06-28 03:37:27,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:27,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:27,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:27,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:27,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:27,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:27,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 134 transitions, 1290 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 03:37:27,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:27,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:27,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:27,895 INFO L124 PetriNetUnfolderBase]: 352/702 cut-off events. [2024-06-28 03:37:27,895 INFO L125 PetriNetUnfolderBase]: For 27603/27603 co-relation queries the response was YES. [2024-06-28 03:37:27,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3937 conditions, 702 events. 352/702 cut-off events. For 27603/27603 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3640 event pairs, 71 based on Foata normal form. 2/703 useless extension candidates. Maximal degree in co-relation 3850. Up to 534 conditions per place. [2024-06-28 03:37:27,899 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 117 selfloop transitions, 31 changer transitions 0/150 dead transitions. [2024-06-28 03:37:27,899 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 150 transitions, 1666 flow [2024-06-28 03:37:27,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:27,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:27,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-28 03:37:27,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3486590038314176 [2024-06-28 03:37:27,900 INFO L175 Difference]: Start difference. First operand has 192 places, 134 transitions, 1290 flow. Second operand 9 states and 91 transitions. [2024-06-28 03:37:27,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 150 transitions, 1666 flow [2024-06-28 03:37:27,989 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 150 transitions, 1594 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-28 03:37:27,991 INFO L231 Difference]: Finished difference. Result has 189 places, 135 transitions, 1336 flow [2024-06-28 03:37:27,991 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1218, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1336, PETRI_PLACES=189, PETRI_TRANSITIONS=135} [2024-06-28 03:37:27,992 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 161 predicate places. [2024-06-28 03:37:27,992 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 135 transitions, 1336 flow [2024-06-28 03:37:27,992 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 03:37:27,992 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:27,992 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:27,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-28 03:37:27,992 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 03:37:27,992 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:27,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1574791883, now seen corresponding path program 12 times [2024-06-28 03:37:27,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:27,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710169839] [2024-06-28 03:37:27,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:27,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:28,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:28,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:28,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710169839] [2024-06-28 03:37:28,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710169839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:28,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:28,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:28,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651278372] [2024-06-28 03:37:28,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:28,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:28,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:28,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:28,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:28,621 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:28,622 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 135 transitions, 1336 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 03:37:28,622 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:28,622 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:28,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:28,911 INFO L124 PetriNetUnfolderBase]: 363/723 cut-off events. [2024-06-28 03:37:28,911 INFO L125 PetriNetUnfolderBase]: For 31914/31914 co-relation queries the response was YES. [2024-06-28 03:37:28,913 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4341 conditions, 723 events. 363/723 cut-off events. For 31914/31914 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3760 event pairs, 89 based on Foata normal form. 2/724 useless extension candidates. Maximal degree in co-relation 4255. Up to 529 conditions per place. [2024-06-28 03:37:28,915 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 111 selfloop transitions, 40 changer transitions 0/153 dead transitions. [2024-06-28 03:37:28,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 153 transitions, 1870 flow [2024-06-28 03:37:28,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:28,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:28,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 03:37:28,916 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36398467432950193 [2024-06-28 03:37:28,916 INFO L175 Difference]: Start difference. First operand has 189 places, 135 transitions, 1336 flow. Second operand 9 states and 95 transitions. [2024-06-28 03:37:28,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 153 transitions, 1870 flow [2024-06-28 03:37:29,018 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 153 transitions, 1750 flow, removed 33 selfloop flow, removed 7 redundant places. [2024-06-28 03:37:29,021 INFO L231 Difference]: Finished difference. Result has 191 places, 137 transitions, 1404 flow [2024-06-28 03:37:29,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1404, PETRI_PLACES=191, PETRI_TRANSITIONS=137} [2024-06-28 03:37:29,021 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 163 predicate places. [2024-06-28 03:37:29,021 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 137 transitions, 1404 flow [2024-06-28 03:37:29,022 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 03:37:29,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:29,022 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:29,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-28 03:37:29,022 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 03:37:29,022 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:29,023 INFO L85 PathProgramCache]: Analyzing trace with hash 254172909, now seen corresponding path program 13 times [2024-06-28 03:37:29,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:29,023 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852568137] [2024-06-28 03:37:29,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:29,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:29,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:29,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:29,708 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:29,708 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852568137] [2024-06-28 03:37:29,708 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852568137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:29,708 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:29,708 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:29,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263474795] [2024-06-28 03:37:29,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:29,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:29,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:29,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:29,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:29,776 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:29,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 137 transitions, 1404 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 03:37:29,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:29,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:29,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:30,083 INFO L124 PetriNetUnfolderBase]: 360/718 cut-off events. [2024-06-28 03:37:30,083 INFO L125 PetriNetUnfolderBase]: For 26216/26216 co-relation queries the response was YES. [2024-06-28 03:37:30,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4084 conditions, 718 events. 360/718 cut-off events. For 26216/26216 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3728 event pairs, 85 based on Foata normal form. 2/716 useless extension candidates. Maximal degree in co-relation 3997. Up to 631 conditions per place. [2024-06-28 03:37:30,086 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 122 selfloop transitions, 28 changer transitions 0/152 dead transitions. [2024-06-28 03:37:30,086 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 200 places, 152 transitions, 1760 flow [2024-06-28 03:37:30,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:30,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:30,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-06-28 03:37:30,087 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482758620689655 [2024-06-28 03:37:30,087 INFO L175 Difference]: Start difference. First operand has 191 places, 137 transitions, 1404 flow. Second operand 10 states and 101 transitions. [2024-06-28 03:37:30,087 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 200 places, 152 transitions, 1760 flow [2024-06-28 03:37:30,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 152 transitions, 1648 flow, removed 34 selfloop flow, removed 5 redundant places. [2024-06-28 03:37:30,200 INFO L231 Difference]: Finished difference. Result has 197 places, 138 transitions, 1370 flow [2024-06-28 03:37:30,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1294, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1370, PETRI_PLACES=197, PETRI_TRANSITIONS=138} [2024-06-28 03:37:30,201 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 169 predicate places. [2024-06-28 03:37:30,201 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 138 transitions, 1370 flow [2024-06-28 03:37:30,201 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 03:37:30,201 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:30,201 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:30,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-28 03:37:30,201 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 03:37:30,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:30,201 INFO L85 PathProgramCache]: Analyzing trace with hash -463193197, now seen corresponding path program 14 times [2024-06-28 03:37:30,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:30,202 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336537976] [2024-06-28 03:37:30,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:30,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:30,912 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 03:37:30,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:30,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336537976] [2024-06-28 03:37:30,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336537976] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:30,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:30,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:30,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18236275] [2024-06-28 03:37:30,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:30,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:30,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:30,913 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:30,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:30,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:30,979 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 138 transitions, 1370 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 03:37:30,979 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:30,979 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:30,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:31,303 INFO L124 PetriNetUnfolderBase]: 364/727 cut-off events. [2024-06-28 03:37:31,304 INFO L125 PetriNetUnfolderBase]: For 26580/26580 co-relation queries the response was YES. [2024-06-28 03:37:31,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4109 conditions, 727 events. 364/727 cut-off events. For 26580/26580 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3777 event pairs, 78 based on Foata normal form. 2/728 useless extension candidates. Maximal degree in co-relation 4019. Up to 534 conditions per place. [2024-06-28 03:37:31,308 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 104 selfloop transitions, 47 changer transitions 0/153 dead transitions. [2024-06-28 03:37:31,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 153 transitions, 1752 flow [2024-06-28 03:37:31,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:31,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:31,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:37:31,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367816091954023 [2024-06-28 03:37:31,309 INFO L175 Difference]: Start difference. First operand has 197 places, 138 transitions, 1370 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:37:31,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 153 transitions, 1752 flow [2024-06-28 03:37:31,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 153 transitions, 1659 flow, removed 2 selfloop flow, removed 8 redundant places. [2024-06-28 03:37:31,412 INFO L231 Difference]: Finished difference. Result has 198 places, 139 transitions, 1421 flow [2024-06-28 03:37:31,413 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1277, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1421, PETRI_PLACES=198, PETRI_TRANSITIONS=139} [2024-06-28 03:37:31,413 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 170 predicate places. [2024-06-28 03:37:31,413 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 139 transitions, 1421 flow [2024-06-28 03:37:31,413 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 03:37:31,413 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:31,413 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:31,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-28 03:37:31,414 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 03:37:31,414 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:31,414 INFO L85 PathProgramCache]: Analyzing trace with hash -463196917, now seen corresponding path program 15 times [2024-06-28 03:37:31,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:31,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708676469] [2024-06-28 03:37:31,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:31,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:31,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:31,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:31,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:31,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708676469] [2024-06-28 03:37:31,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708676469] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:31,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:31,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:31,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213270468] [2024-06-28 03:37:31,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:31,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:31,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:31,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:31,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:32,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:32,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 139 transitions, 1421 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 03:37:32,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:32,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:32,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:32,333 INFO L124 PetriNetUnfolderBase]: 404/807 cut-off events. [2024-06-28 03:37:32,333 INFO L125 PetriNetUnfolderBase]: For 44148/44148 co-relation queries the response was YES. [2024-06-28 03:37:32,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5192 conditions, 807 events. 404/807 cut-off events. For 44148/44148 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4293 event pairs, 96 based on Foata normal form. 2/808 useless extension candidates. Maximal degree in co-relation 5101. Up to 506 conditions per place. [2024-06-28 03:37:32,340 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 107 selfloop transitions, 51 changer transitions 0/160 dead transitions. [2024-06-28 03:37:32,340 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 160 transitions, 1997 flow [2024-06-28 03:37:32,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:32,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:32,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-28 03:37:32,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39080459770114945 [2024-06-28 03:37:32,342 INFO L175 Difference]: Start difference. First operand has 198 places, 139 transitions, 1421 flow. Second operand 9 states and 102 transitions. [2024-06-28 03:37:32,342 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 160 transitions, 1997 flow [2024-06-28 03:37:32,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 160 transitions, 1861 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-28 03:37:32,449 INFO L231 Difference]: Finished difference. Result has 200 places, 141 transitions, 1485 flow [2024-06-28 03:37:32,449 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1291, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1485, PETRI_PLACES=200, PETRI_TRANSITIONS=141} [2024-06-28 03:37:32,450 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 172 predicate places. [2024-06-28 03:37:32,450 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 141 transitions, 1485 flow [2024-06-28 03:37:32,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 03:37:32,450 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:32,450 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:32,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-28 03:37:32,450 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 03:37:32,450 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:32,450 INFO L85 PathProgramCache]: Analyzing trace with hash -457686667, now seen corresponding path program 16 times [2024-06-28 03:37:32,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:32,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826129477] [2024-06-28 03:37:32,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:32,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:32,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:33,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:33,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:33,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826129477] [2024-06-28 03:37:33,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826129477] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:33,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:33,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:33,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2071186628] [2024-06-28 03:37:33,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:33,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:33,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:33,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:33,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:33,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:33,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 141 transitions, 1485 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 03:37:33,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:33,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:33,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:33,486 INFO L124 PetriNetUnfolderBase]: 388/779 cut-off events. [2024-06-28 03:37:33,486 INFO L125 PetriNetUnfolderBase]: For 40756/40756 co-relation queries the response was YES. [2024-06-28 03:37:33,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4417 conditions, 779 events. 388/779 cut-off events. For 40756/40756 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4148 event pairs, 80 based on Foata normal form. 12/790 useless extension candidates. Maximal degree in co-relation 4325. Up to 544 conditions per place. [2024-06-28 03:37:33,491 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 100 selfloop transitions, 50 changer transitions 7/159 dead transitions. [2024-06-28 03:37:33,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 159 transitions, 1871 flow [2024-06-28 03:37:33,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:33,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:33,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-28 03:37:33,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3831417624521073 [2024-06-28 03:37:33,494 INFO L175 Difference]: Start difference. First operand has 200 places, 141 transitions, 1485 flow. Second operand 9 states and 100 transitions. [2024-06-28 03:37:33,494 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 159 transitions, 1871 flow [2024-06-28 03:37:33,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 159 transitions, 1734 flow, removed 37 selfloop flow, removed 7 redundant places. [2024-06-28 03:37:33,589 INFO L231 Difference]: Finished difference. Result has 202 places, 138 transitions, 1434 flow [2024-06-28 03:37:33,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1348, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1434, PETRI_PLACES=202, PETRI_TRANSITIONS=138} [2024-06-28 03:37:33,589 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 174 predicate places. [2024-06-28 03:37:33,589 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 138 transitions, 1434 flow [2024-06-28 03:37:33,589 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 03:37:33,589 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:33,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:33,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-28 03:37:33,589 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 03:37:33,590 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:33,590 INFO L85 PathProgramCache]: Analyzing trace with hash -457471465, now seen corresponding path program 2 times [2024-06-28 03:37:33,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:33,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261143880] [2024-06-28 03:37:33,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:33,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:34,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:34,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:34,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261143880] [2024-06-28 03:37:34,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261143880] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:34,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:34,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:34,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588132208] [2024-06-28 03:37:34,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:34,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:34,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:34,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:34,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:34,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:34,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 138 transitions, 1434 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 03:37:34,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:34,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:34,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:34,385 INFO L124 PetriNetUnfolderBase]: 391/792 cut-off events. [2024-06-28 03:37:34,386 INFO L125 PetriNetUnfolderBase]: For 41396/41396 co-relation queries the response was YES. [2024-06-28 03:37:34,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4662 conditions, 792 events. 391/792 cut-off events. For 41396/41396 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4251 event pairs, 89 based on Foata normal form. 8/799 useless extension candidates. Maximal degree in co-relation 4570. Up to 437 conditions per place. [2024-06-28 03:37:34,391 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 103 selfloop transitions, 45 changer transitions 8/158 dead transitions. [2024-06-28 03:37:34,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 158 transitions, 1920 flow [2024-06-28 03:37:34,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:34,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:34,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-28 03:37:34,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38697318007662834 [2024-06-28 03:37:34,392 INFO L175 Difference]: Start difference. First operand has 202 places, 138 transitions, 1434 flow. Second operand 9 states and 101 transitions. [2024-06-28 03:37:34,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 158 transitions, 1920 flow [2024-06-28 03:37:34,503 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 158 transitions, 1777 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-28 03:37:34,505 INFO L231 Difference]: Finished difference. Result has 201 places, 135 transitions, 1363 flow [2024-06-28 03:37:34,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1293, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1363, PETRI_PLACES=201, PETRI_TRANSITIONS=135} [2024-06-28 03:37:34,506 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 173 predicate places. [2024-06-28 03:37:34,506 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 135 transitions, 1363 flow [2024-06-28 03:37:34,506 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 03:37:34,506 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:34,506 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:34,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-28 03:37:34,506 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 03:37:34,506 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:34,506 INFO L85 PathProgramCache]: Analyzing trace with hash -2047381131, now seen corresponding path program 17 times [2024-06-28 03:37:34,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:34,507 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1453421165] [2024-06-28 03:37:34,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:34,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:34,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:35,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:35,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:35,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1453421165] [2024-06-28 03:37:35,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1453421165] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:35,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:35,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:35,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650722675] [2024-06-28 03:37:35,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:35,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:35,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:35,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:35,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:35,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:35,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 135 transitions, 1363 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 03:37:35,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:35,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:35,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:35,573 INFO L124 PetriNetUnfolderBase]: 392/795 cut-off events. [2024-06-28 03:37:35,574 INFO L125 PetriNetUnfolderBase]: For 47096/47096 co-relation queries the response was YES. [2024-06-28 03:37:35,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4670 conditions, 795 events. 392/795 cut-off events. For 47096/47096 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 4247 event pairs, 110 based on Foata normal form. 12/802 useless extension candidates. Maximal degree in co-relation 4578. Up to 508 conditions per place. [2024-06-28 03:37:35,578 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 94 selfloop transitions, 50 changer transitions 7/153 dead transitions. [2024-06-28 03:37:35,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 153 transitions, 1777 flow [2024-06-28 03:37:35,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:35,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:35,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-28 03:37:35,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40229885057471265 [2024-06-28 03:37:35,579 INFO L175 Difference]: Start difference. First operand has 201 places, 135 transitions, 1363 flow. Second operand 9 states and 105 transitions. [2024-06-28 03:37:35,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 153 transitions, 1777 flow [2024-06-28 03:37:35,687 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 153 transitions, 1685 flow, removed 5 selfloop flow, removed 10 redundant places. [2024-06-28 03:37:35,689 INFO L231 Difference]: Finished difference. Result has 197 places, 133 transitions, 1401 flow [2024-06-28 03:37:35,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1273, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1401, PETRI_PLACES=197, PETRI_TRANSITIONS=133} [2024-06-28 03:37:35,689 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 169 predicate places. [2024-06-28 03:37:35,689 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 133 transitions, 1401 flow [2024-06-28 03:37:35,689 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 03:37:35,689 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:35,689 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:35,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-28 03:37:35,690 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 03:37:35,690 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:35,690 INFO L85 PathProgramCache]: Analyzing trace with hash -2047165929, now seen corresponding path program 3 times [2024-06-28 03:37:35,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:35,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628058774] [2024-06-28 03:37:35,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:35,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:36,180 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 03:37:36,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:36,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628058774] [2024-06-28 03:37:36,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628058774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:36,180 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:36,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:36,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215139943] [2024-06-28 03:37:36,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:36,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:36,181 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:36,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:36,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:36,249 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:36,249 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 133 transitions, 1401 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 03:37:36,249 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:36,249 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:36,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:36,501 INFO L124 PetriNetUnfolderBase]: 402/820 cut-off events. [2024-06-28 03:37:36,501 INFO L125 PetriNetUnfolderBase]: For 48115/48115 co-relation queries the response was YES. [2024-06-28 03:37:36,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5171 conditions, 820 events. 402/820 cut-off events. For 48115/48115 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4412 event pairs, 118 based on Foata normal form. 8/824 useless extension candidates. Maximal degree in co-relation 5082. Up to 492 conditions per place. [2024-06-28 03:37:36,508 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 96 selfloop transitions, 47 changer transitions 8/153 dead transitions. [2024-06-28 03:37:36,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 153 transitions, 1913 flow [2024-06-28 03:37:36,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:36,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:36,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 106 transitions. [2024-06-28 03:37:36,509 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4061302681992337 [2024-06-28 03:37:36,509 INFO L175 Difference]: Start difference. First operand has 197 places, 133 transitions, 1401 flow. Second operand 9 states and 106 transitions. [2024-06-28 03:37:36,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 153 transitions, 1913 flow [2024-06-28 03:37:36,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 153 transitions, 1765 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-28 03:37:36,632 INFO L231 Difference]: Finished difference. Result has 197 places, 130 transitions, 1332 flow [2024-06-28 03:37:36,632 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=133, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1332, PETRI_PLACES=197, PETRI_TRANSITIONS=130} [2024-06-28 03:37:36,633 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 169 predicate places. [2024-06-28 03:37:36,633 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 130 transitions, 1332 flow [2024-06-28 03:37:36,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 03:37:36,633 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:36,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:36,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-28 03:37:36,633 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 03:37:36,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:36,634 INFO L85 PathProgramCache]: Analyzing trace with hash 979302935, now seen corresponding path program 4 times [2024-06-28 03:37:36,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:36,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437489792] [2024-06-28 03:37:36,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:36,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:36,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:37,201 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 03:37:37,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:37,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437489792] [2024-06-28 03:37:37,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437489792] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:37,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:37,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:37,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588592803] [2024-06-28 03:37:37,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:37,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:37,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:37,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:37,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:37,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:37,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 130 transitions, 1332 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 03:37:37,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:37,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:37,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:37,574 INFO L124 PetriNetUnfolderBase]: 431/880 cut-off events. [2024-06-28 03:37:37,574 INFO L125 PetriNetUnfolderBase]: For 65279/65279 co-relation queries the response was YES. [2024-06-28 03:37:37,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5994 conditions, 880 events. 431/880 cut-off events. For 65279/65279 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4791 event pairs, 197 based on Foata normal form. 8/887 useless extension candidates. Maximal degree in co-relation 5905. Up to 706 conditions per place. [2024-06-28 03:37:37,580 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 126 selfloop transitions, 13 changer transitions 9/150 dead transitions. [2024-06-28 03:37:37,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 150 transitions, 1854 flow [2024-06-28 03:37:37,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:37,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:37,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-28 03:37:37,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3716475095785441 [2024-06-28 03:37:37,581 INFO L175 Difference]: Start difference. First operand has 197 places, 130 transitions, 1332 flow. Second operand 9 states and 97 transitions. [2024-06-28 03:37:37,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 150 transitions, 1854 flow [2024-06-28 03:37:37,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 150 transitions, 1750 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-28 03:37:37,725 INFO L231 Difference]: Finished difference. Result has 194 places, 126 transitions, 1240 flow [2024-06-28 03:37:37,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1234, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1240, PETRI_PLACES=194, PETRI_TRANSITIONS=126} [2024-06-28 03:37:37,725 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 166 predicate places. [2024-06-28 03:37:37,725 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 126 transitions, 1240 flow [2024-06-28 03:37:37,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 03:37:37,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:37,725 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:37,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-28 03:37:37,725 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 03:37:37,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:37,726 INFO L85 PathProgramCache]: Analyzing trace with hash -2052887661, now seen corresponding path program 18 times [2024-06-28 03:37:37,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:37,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2108114786] [2024-06-28 03:37:37,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:37,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:37,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:38,428 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 03:37:38,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:38,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2108114786] [2024-06-28 03:37:38,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2108114786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:38,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:38,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:38,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563236275] [2024-06-28 03:37:38,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:38,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:38,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:38,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:38,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:38,507 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:38,507 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 126 transitions, 1240 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 03:37:38,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:38,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:38,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:38,754 INFO L124 PetriNetUnfolderBase]: 404/826 cut-off events. [2024-06-28 03:37:38,755 INFO L125 PetriNetUnfolderBase]: For 51551/51551 co-relation queries the response was YES. [2024-06-28 03:37:38,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5533 conditions, 826 events. 404/826 cut-off events. For 51551/51551 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4439 event pairs, 135 based on Foata normal form. 2/824 useless extension candidates. Maximal degree in co-relation 5446. Up to 591 conditions per place. [2024-06-28 03:37:38,762 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 87 selfloop transitions, 50 changer transitions 0/139 dead transitions. [2024-06-28 03:37:38,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 139 transitions, 1590 flow [2024-06-28 03:37:38,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:38,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:38,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-28 03:37:38,763 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.367816091954023 [2024-06-28 03:37:38,763 INFO L175 Difference]: Start difference. First operand has 194 places, 126 transitions, 1240 flow. Second operand 9 states and 96 transitions. [2024-06-28 03:37:38,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 139 transitions, 1590 flow [2024-06-28 03:37:38,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 139 transitions, 1561 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:37:38,878 INFO L231 Difference]: Finished difference. Result has 191 places, 127 transitions, 1361 flow [2024-06-28 03:37:38,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1361, PETRI_PLACES=191, PETRI_TRANSITIONS=127} [2024-06-28 03:37:38,878 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 163 predicate places. [2024-06-28 03:37:38,878 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 127 transitions, 1361 flow [2024-06-28 03:37:38,879 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 03:37:38,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:38,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:38,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-28 03:37:38,879 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 03:37:38,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:38,879 INFO L85 PathProgramCache]: Analyzing trace with hash 722794985, now seen corresponding path program 5 times [2024-06-28 03:37:38,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:38,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801604430] [2024-06-28 03:37:38,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:38,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:39,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:39,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:39,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801604430] [2024-06-28 03:37:39,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801604430] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:39,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:39,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:39,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512344897] [2024-06-28 03:37:39,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:39,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:39,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:39,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:39,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:39,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:39,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 127 transitions, 1361 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 03:37:39,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:39,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:39,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:39,754 INFO L124 PetriNetUnfolderBase]: 403/832 cut-off events. [2024-06-28 03:37:39,754 INFO L125 PetriNetUnfolderBase]: For 50378/50378 co-relation queries the response was YES. [2024-06-28 03:37:39,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5242 conditions, 832 events. 403/832 cut-off events. For 50378/50378 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4508 event pairs, 197 based on Foata normal form. 12/843 useless extension candidates. Maximal degree in co-relation 5157. Up to 738 conditions per place. [2024-06-28 03:37:39,758 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 118 selfloop transitions, 12 changer transitions 10/142 dead transitions. [2024-06-28 03:37:39,758 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 142 transitions, 1743 flow [2024-06-28 03:37:39,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:39,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:39,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 91 transitions. [2024-06-28 03:37:39,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3486590038314176 [2024-06-28 03:37:39,759 INFO L175 Difference]: Start difference. First operand has 191 places, 127 transitions, 1361 flow. Second operand 9 states and 91 transitions. [2024-06-28 03:37:39,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 142 transitions, 1743 flow [2024-06-28 03:37:39,863 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 142 transitions, 1603 flow, removed 21 selfloop flow, removed 7 redundant places. [2024-06-28 03:37:39,864 INFO L231 Difference]: Finished difference. Result has 193 places, 122 transitions, 1251 flow [2024-06-28 03:37:39,865 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1221, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1251, PETRI_PLACES=193, PETRI_TRANSITIONS=122} [2024-06-28 03:37:39,865 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 165 predicate places. [2024-06-28 03:37:39,865 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 122 transitions, 1251 flow [2024-06-28 03:37:39,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 03:37:39,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:39,865 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:39,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-28 03:37:39,865 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 03:37:39,866 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:39,866 INFO L85 PathProgramCache]: Analyzing trace with hash -849452165, now seen corresponding path program 19 times [2024-06-28 03:37:39,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:39,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531889689] [2024-06-28 03:37:39,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:39,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:39,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:40,432 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 03:37:40,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:40,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531889689] [2024-06-28 03:37:40,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531889689] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:40,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:40,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:40,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27803979] [2024-06-28 03:37:40,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:40,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:40,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:40,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:40,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:40,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:40,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 122 transitions, 1251 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 03:37:40,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:40,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:40,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:40,665 INFO L124 PetriNetUnfolderBase]: 372/770 cut-off events. [2024-06-28 03:37:40,665 INFO L125 PetriNetUnfolderBase]: For 40134/40134 co-relation queries the response was YES. [2024-06-28 03:37:40,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4762 conditions, 770 events. 372/770 cut-off events. For 40134/40134 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4091 event pairs, 129 based on Foata normal form. 2/768 useless extension candidates. Maximal degree in co-relation 4676. Up to 523 conditions per place. [2024-06-28 03:37:40,670 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 84 selfloop transitions, 48 changer transitions 0/134 dead transitions. [2024-06-28 03:37:40,670 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 134 transitions, 1545 flow [2024-06-28 03:37:40,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:40,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:40,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-28 03:37:40,671 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36398467432950193 [2024-06-28 03:37:40,671 INFO L175 Difference]: Start difference. First operand has 193 places, 122 transitions, 1251 flow. Second operand 9 states and 95 transitions. [2024-06-28 03:37:40,671 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 134 transitions, 1545 flow [2024-06-28 03:37:40,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 134 transitions, 1467 flow, removed 24 selfloop flow, removed 11 redundant places. [2024-06-28 03:37:40,802 INFO L231 Difference]: Finished difference. Result has 189 places, 122 transitions, 1273 flow [2024-06-28 03:37:40,803 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1173, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1273, PETRI_PLACES=189, PETRI_TRANSITIONS=122} [2024-06-28 03:37:40,803 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 161 predicate places. [2024-06-28 03:37:40,803 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 122 transitions, 1273 flow [2024-06-28 03:37:40,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 03:37:40,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:40,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:40,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-28 03:37:40,804 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 03:37:40,804 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:40,804 INFO L85 PathProgramCache]: Analyzing trace with hash 583723113, now seen corresponding path program 6 times [2024-06-28 03:37:40,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:40,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680919829] [2024-06-28 03:37:40,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:40,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:40,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:41,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:41,323 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:41,323 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680919829] [2024-06-28 03:37:41,323 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680919829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:41,324 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:41,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:41,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281526392] [2024-06-28 03:37:41,324 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:41,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:41,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:41,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:41,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:41,381 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:41,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 122 transitions, 1273 flow. Second operand has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 03:37:41,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:41,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:41,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:41,606 INFO L124 PetriNetUnfolderBase]: 370/773 cut-off events. [2024-06-28 03:37:41,606 INFO L125 PetriNetUnfolderBase]: For 39958/39958 co-relation queries the response was YES. [2024-06-28 03:37:41,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4520 conditions, 773 events. 370/773 cut-off events. For 39958/39958 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4131 event pairs, 184 based on Foata normal form. 8/780 useless extension candidates. Maximal degree in co-relation 4436. Up to 652 conditions per place. [2024-06-28 03:37:41,613 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 118 selfloop transitions, 9 changer transitions 11/140 dead transitions. [2024-06-28 03:37:41,613 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 140 transitions, 1687 flow [2024-06-28 03:37:41,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:41,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:41,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-06-28 03:37:41,615 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-28 03:37:41,615 INFO L175 Difference]: Start difference. First operand has 189 places, 122 transitions, 1273 flow. Second operand 10 states and 100 transitions. [2024-06-28 03:37:41,615 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 140 transitions, 1687 flow [2024-06-28 03:37:41,722 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 140 transitions, 1414 flow, removed 23 selfloop flow, removed 14 redundant places. [2024-06-28 03:37:41,724 INFO L231 Difference]: Finished difference. Result has 185 places, 117 transitions, 982 flow [2024-06-28 03:37:41,724 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=982, PETRI_PLACES=185, PETRI_TRANSITIONS=117} [2024-06-28 03:37:41,724 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 157 predicate places. [2024-06-28 03:37:41,724 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 117 transitions, 982 flow [2024-06-28 03:37:41,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.4) internal successors, (64), 10 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 03:37:41,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:41,725 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 03:37:41,725 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-28 03:37:41,725 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 03:37:41,725 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:41,725 INFO L85 PathProgramCache]: Analyzing trace with hash -140084014, now seen corresponding path program 1 times [2024-06-28 03:37:41,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:41,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882175387] [2024-06-28 03:37:41,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:41,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:41,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:42,275 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 03:37:42,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:42,276 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882175387] [2024-06-28 03:37:42,276 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882175387] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:42,276 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:42,276 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:42,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25952890] [2024-06-28 03:37:42,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:42,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:42,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:42,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:42,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:42,367 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:42,367 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 117 transitions, 982 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:42,367 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:42,367 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:42,367 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:42,572 INFO L124 PetriNetUnfolderBase]: 355/744 cut-off events. [2024-06-28 03:37:42,572 INFO L125 PetriNetUnfolderBase]: For 38337/38337 co-relation queries the response was YES. [2024-06-28 03:37:42,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4009 conditions, 744 events. 355/744 cut-off events. For 38337/38337 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 3942 event pairs, 84 based on Foata normal form. 6/749 useless extension candidates. Maximal degree in co-relation 3930. Up to 599 conditions per place. [2024-06-28 03:37:42,576 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 98 selfloop transitions, 19 changer transitions 17/136 dead transitions. [2024-06-28 03:37:42,576 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 136 transitions, 1300 flow [2024-06-28 03:37:42,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:42,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:42,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-28 03:37:42,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3413793103448276 [2024-06-28 03:37:42,577 INFO L175 Difference]: Start difference. First operand has 185 places, 117 transitions, 982 flow. Second operand 10 states and 99 transitions. [2024-06-28 03:37:42,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 136 transitions, 1300 flow [2024-06-28 03:37:42,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 136 transitions, 1228 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-06-28 03:37:42,645 INFO L231 Difference]: Finished difference. Result has 179 places, 112 transitions, 920 flow [2024-06-28 03:37:42,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=920, PETRI_PLACES=179, PETRI_TRANSITIONS=112} [2024-06-28 03:37:42,646 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 151 predicate places. [2024-06-28 03:37:42,646 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 112 transitions, 920 flow [2024-06-28 03:37:42,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:42,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:42,646 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 03:37:42,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-28 03:37:42,647 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 03:37:42,647 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:42,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1037162488, now seen corresponding path program 2 times [2024-06-28 03:37:42,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:42,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1304719180] [2024-06-28 03:37:42,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:42,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:42,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:43,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:43,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:43,481 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1304719180] [2024-06-28 03:37:43,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1304719180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:43,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:43,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:37:43,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160695218] [2024-06-28 03:37:43,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:43,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:37:43,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:43,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:37:43,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:37:43,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:43,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 112 transitions, 920 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 03:37:43,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:43,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:43,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:43,770 INFO L124 PetriNetUnfolderBase]: 338/706 cut-off events. [2024-06-28 03:37:43,770 INFO L125 PetriNetUnfolderBase]: For 25445/25445 co-relation queries the response was YES. [2024-06-28 03:37:43,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3530 conditions, 706 events. 338/706 cut-off events. For 25445/25445 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 3656 event pairs, 119 based on Foata normal form. 6/711 useless extension candidates. Maximal degree in co-relation 3455. Up to 599 conditions per place. [2024-06-28 03:37:43,774 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 96 selfloop transitions, 20 changer transitions 15/133 dead transitions. [2024-06-28 03:37:43,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 133 transitions, 1236 flow [2024-06-28 03:37:43,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:37:43,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:37:43,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-28 03:37:43,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3448275862068966 [2024-06-28 03:37:43,774 INFO L175 Difference]: Start difference. First operand has 179 places, 112 transitions, 920 flow. Second operand 11 states and 110 transitions. [2024-06-28 03:37:43,775 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 133 transitions, 1236 flow [2024-06-28 03:37:43,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 133 transitions, 1187 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:37:43,823 INFO L231 Difference]: Finished difference. Result has 174 places, 108 transitions, 880 flow [2024-06-28 03:37:43,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=871, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=880, PETRI_PLACES=174, PETRI_TRANSITIONS=108} [2024-06-28 03:37:43,824 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 146 predicate places. [2024-06-28 03:37:43,824 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 108 transitions, 880 flow [2024-06-28 03:37:43,824 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 03:37:43,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:43,824 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 03:37:43,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-28 03:37:43,824 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 03:37:43,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:43,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1961991222, now seen corresponding path program 3 times [2024-06-28 03:37:43,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:43,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190410099] [2024-06-28 03:37:43,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:43,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:43,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:44,538 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 03:37:44,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:44,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190410099] [2024-06-28 03:37:44,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190410099] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:44,538 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:44,538 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:37:44,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456442020] [2024-06-28 03:37:44,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:44,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:37:44,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:44,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:37:44,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:37:44,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:44,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 108 transitions, 880 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 03:37:44,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:44,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:44,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:44,939 INFO L124 PetriNetUnfolderBase]: 307/643 cut-off events. [2024-06-28 03:37:44,940 INFO L125 PetriNetUnfolderBase]: For 21218/21218 co-relation queries the response was YES. [2024-06-28 03:37:44,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3112 conditions, 643 events. 307/643 cut-off events. For 21218/21218 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 3240 event pairs, 87 based on Foata normal form. 6/648 useless extension candidates. Maximal degree in co-relation 3040. Up to 456 conditions per place. [2024-06-28 03:37:44,943 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 77 selfloop transitions, 26 changer transitions 25/130 dead transitions. [2024-06-28 03:37:44,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 130 transitions, 1196 flow [2024-06-28 03:37:44,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:37:44,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:37:44,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 121 transitions. [2024-06-28 03:37:44,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34770114942528735 [2024-06-28 03:37:44,943 INFO L175 Difference]: Start difference. First operand has 174 places, 108 transitions, 880 flow. Second operand 12 states and 121 transitions. [2024-06-28 03:37:44,944 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 130 transitions, 1196 flow [2024-06-28 03:37:44,983 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 130 transitions, 1148 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:37:44,984 INFO L231 Difference]: Finished difference. Result has 169 places, 91 transitions, 746 flow [2024-06-28 03:37:44,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=746, PETRI_PLACES=169, PETRI_TRANSITIONS=91} [2024-06-28 03:37:44,984 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 141 predicate places. [2024-06-28 03:37:44,985 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 91 transitions, 746 flow [2024-06-28 03:37:44,985 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 03:37:44,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:44,985 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 03:37:44,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-28 03:37:44,985 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 03:37:44,985 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:44,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1976175582, now seen corresponding path program 4 times [2024-06-28 03:37:44,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:44,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036865355] [2024-06-28 03:37:44,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:44,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:44,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:45,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:45,702 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:45,703 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036865355] [2024-06-28 03:37:45,703 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1036865355] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:45,703 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:45,703 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:37:45,703 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497104067] [2024-06-28 03:37:45,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:45,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:37:45,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:45,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:37:45,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:37:45,816 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:45,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 91 transitions, 746 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 03:37:45,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:45,820 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:45,820 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:46,093 INFO L124 PetriNetUnfolderBase]: 262/560 cut-off events. [2024-06-28 03:37:46,093 INFO L125 PetriNetUnfolderBase]: For 21098/21098 co-relation queries the response was YES. [2024-06-28 03:37:46,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2772 conditions, 560 events. 262/560 cut-off events. For 21098/21098 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2730 event pairs, 72 based on Foata normal form. 6/565 useless extension candidates. Maximal degree in co-relation 2714. Up to 398 conditions per place. [2024-06-28 03:37:46,095 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 66 selfloop transitions, 13 changer transitions 32/113 dead transitions. [2024-06-28 03:37:46,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 113 transitions, 1026 flow [2024-06-28 03:37:46,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-28 03:37:46,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-28 03:37:46,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 119 transitions. [2024-06-28 03:37:46,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34195402298850575 [2024-06-28 03:37:46,096 INFO L175 Difference]: Start difference. First operand has 169 places, 91 transitions, 746 flow. Second operand 12 states and 119 transitions. [2024-06-28 03:37:46,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 113 transitions, 1026 flow [2024-06-28 03:37:46,130 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 113 transitions, 941 flow, removed 6 selfloop flow, removed 14 redundant places. [2024-06-28 03:37:46,131 INFO L231 Difference]: Finished difference. Result has 152 places, 70 transitions, 502 flow [2024-06-28 03:37:46,131 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=661, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=502, PETRI_PLACES=152, PETRI_TRANSITIONS=70} [2024-06-28 03:37:46,131 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 124 predicate places. [2024-06-28 03:37:46,131 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 70 transitions, 502 flow [2024-06-28 03:37:46,131 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 03:37:46,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:46,132 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 03:37:46,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-28 03:37:46,132 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 03:37:46,132 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:46,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1159040992, now seen corresponding path program 5 times [2024-06-28 03:37:46,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:46,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269151367] [2024-06-28 03:37:46,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:46,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:46,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:46,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:46,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269151367] [2024-06-28 03:37:46,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269151367] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:46,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:46,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:37:46,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518456122] [2024-06-28 03:37:46,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:46,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:37:46,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:46,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:37:46,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:37:46,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:46,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 70 transitions, 502 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 03:37:46,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:46,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:46,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:47,199 INFO L124 PetriNetUnfolderBase]: 214/458 cut-off events. [2024-06-28 03:37:47,199 INFO L125 PetriNetUnfolderBase]: For 17533/17533 co-relation queries the response was YES. [2024-06-28 03:37:47,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2254 conditions, 458 events. 214/458 cut-off events. For 17533/17533 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2081 event pairs, 68 based on Foata normal form. 6/463 useless extension candidates. Maximal degree in co-relation 2199. Up to 368 conditions per place. [2024-06-28 03:37:47,201 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 56 selfloop transitions, 8 changer transitions 24/90 dead transitions. [2024-06-28 03:37:47,201 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 90 transitions, 730 flow [2024-06-28 03:37:47,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-28 03:37:47,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-28 03:37:47,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-28 03:37:47,202 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.335423197492163 [2024-06-28 03:37:47,202 INFO L175 Difference]: Start difference. First operand has 152 places, 70 transitions, 502 flow. Second operand 11 states and 107 transitions. [2024-06-28 03:37:47,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 90 transitions, 730 flow [2024-06-28 03:37:47,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 90 transitions, 659 flow, removed 8 selfloop flow, removed 19 redundant places. [2024-06-28 03:37:47,226 INFO L231 Difference]: Finished difference. Result has 126 places, 62 transitions, 387 flow [2024-06-28 03:37:47,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=387, PETRI_PLACES=126, PETRI_TRANSITIONS=62} [2024-06-28 03:37:47,226 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 98 predicate places. [2024-06-28 03:37:47,226 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 62 transitions, 387 flow [2024-06-28 03:37:47,226 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 03:37:47,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:47,226 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 03:37:47,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-28 03:37:47,227 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 03:37:47,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:47,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1969509616, now seen corresponding path program 6 times [2024-06-28 03:37:47,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:47,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158446587] [2024-06-28 03:37:47,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:47,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:47,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:48,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:48,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:48,151 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158446587] [2024-06-28 03:37:48,151 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158446587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:48,151 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:48,151 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:37:48,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050796141] [2024-06-28 03:37:48,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:48,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:37:48,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:48,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:37:48,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:37:48,235 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:48,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 62 transitions, 387 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 03:37:48,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:48,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:48,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:48,462 INFO L124 PetriNetUnfolderBase]: 193/411 cut-off events. [2024-06-28 03:37:48,462 INFO L125 PetriNetUnfolderBase]: For 17327/17327 co-relation queries the response was YES. [2024-06-28 03:37:48,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1997 conditions, 411 events. 193/411 cut-off events. For 17327/17327 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1832 event pairs, 64 based on Foata normal form. 6/416 useless extension candidates. Maximal degree in co-relation 1951. Up to 338 conditions per place. [2024-06-28 03:37:48,464 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 53 selfloop transitions, 8 changer transitions 15/78 dead transitions. [2024-06-28 03:37:48,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 78 transitions, 579 flow [2024-06-28 03:37:48,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:48,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:48,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2024-06-28 03:37:48,465 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32413793103448274 [2024-06-28 03:37:48,465 INFO L175 Difference]: Start difference. First operand has 126 places, 62 transitions, 387 flow. Second operand 10 states and 94 transitions. [2024-06-28 03:37:48,465 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 78 transitions, 579 flow [2024-06-28 03:37:48,482 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 78 transitions, 548 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-28 03:37:48,483 INFO L231 Difference]: Finished difference. Result has 112 places, 58 transitions, 355 flow [2024-06-28 03:37:48,483 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=355, PETRI_PLACES=112, PETRI_TRANSITIONS=58} [2024-06-28 03:37:48,483 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 84 predicate places. [2024-06-28 03:37:48,483 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 58 transitions, 355 flow [2024-06-28 03:37:48,483 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 03:37:48,483 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:48,484 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 03:37:48,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-28 03:37:48,484 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 03:37:48,484 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:48,484 INFO L85 PathProgramCache]: Analyzing trace with hash -1573791876, now seen corresponding path program 7 times [2024-06-28 03:37:48,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:48,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295005850] [2024-06-28 03:37:48,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:48,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:48,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:49,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:49,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:49,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295005850] [2024-06-28 03:37:49,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295005850] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:49,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:49,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:49,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827949565] [2024-06-28 03:37:49,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:49,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:49,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:49,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:49,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:49,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:49,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 58 transitions, 355 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:49,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:49,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:49,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:49,340 INFO L124 PetriNetUnfolderBase]: 162/348 cut-off events. [2024-06-28 03:37:49,340 INFO L125 PetriNetUnfolderBase]: For 13856/13856 co-relation queries the response was YES. [2024-06-28 03:37:49,341 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1616 conditions, 348 events. 162/348 cut-off events. For 13856/13856 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1457 event pairs, 47 based on Foata normal form. 6/353 useless extension candidates. Maximal degree in co-relation 1574. Up to 227 conditions per place. [2024-06-28 03:37:49,342 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 39 selfloop transitions, 10 changer transitions 20/71 dead transitions. [2024-06-28 03:37:49,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 71 transitions, 527 flow [2024-06-28 03:37:49,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:49,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:49,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 87 transitions. [2024-06-28 03:37:49,343 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-28 03:37:49,343 INFO L175 Difference]: Start difference. First operand has 112 places, 58 transitions, 355 flow. Second operand 9 states and 87 transitions. [2024-06-28 03:37:49,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 71 transitions, 527 flow [2024-06-28 03:37:49,357 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 71 transitions, 503 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-28 03:37:49,358 INFO L231 Difference]: Finished difference. Result has 105 places, 46 transitions, 285 flow [2024-06-28 03:37:49,358 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=285, PETRI_PLACES=105, PETRI_TRANSITIONS=46} [2024-06-28 03:37:49,358 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 77 predicate places. [2024-06-28 03:37:49,358 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 46 transitions, 285 flow [2024-06-28 03:37:49,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:49,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:49,358 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 03:37:49,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-28 03:37:49,359 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 03:37:49,359 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:49,359 INFO L85 PathProgramCache]: Analyzing trace with hash -710688812, now seen corresponding path program 8 times [2024-06-28 03:37:49,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:49,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121906579] [2024-06-28 03:37:49,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:49,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:49,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:49,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:49,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:49,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121906579] [2024-06-28 03:37:49,939 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121906579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:49,939 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:49,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-28 03:37:49,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032931327] [2024-06-28 03:37:49,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:49,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-28 03:37:49,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:49,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-28 03:37:49,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-28 03:37:50,025 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:50,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 46 transitions, 285 flow. Second operand has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:50,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:50,025 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:50,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:50,169 INFO L124 PetriNetUnfolderBase]: 130/288 cut-off events. [2024-06-28 03:37:50,169 INFO L125 PetriNetUnfolderBase]: For 11510/11510 co-relation queries the response was YES. [2024-06-28 03:37:50,170 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1370 conditions, 288 events. 130/288 cut-off events. For 11510/11510 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1117 event pairs, 43 based on Foata normal form. 6/293 useless extension candidates. Maximal degree in co-relation 1331. Up to 189 conditions per place. [2024-06-28 03:37:50,170 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 28 selfloop transitions, 3 changer transitions 26/59 dead transitions. [2024-06-28 03:37:50,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 59 transitions, 431 flow [2024-06-28 03:37:50,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:50,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 85 transitions. [2024-06-28 03:37:50,171 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32567049808429116 [2024-06-28 03:37:50,171 INFO L175 Difference]: Start difference. First operand has 105 places, 46 transitions, 285 flow. Second operand 9 states and 85 transitions. [2024-06-28 03:37:50,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 59 transitions, 431 flow [2024-06-28 03:37:50,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 59 transitions, 395 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-28 03:37:50,180 INFO L231 Difference]: Finished difference. Result has 89 places, 32 transitions, 176 flow [2024-06-28 03:37:50,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=176, PETRI_PLACES=89, PETRI_TRANSITIONS=32} [2024-06-28 03:37:50,180 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 61 predicate places. [2024-06-28 03:37:50,180 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 32 transitions, 176 flow [2024-06-28 03:37:50,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.5) internal successors, (65), 10 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-28 03:37:50,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:50,181 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 03:37:50,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-28 03:37:50,181 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 03:37:50,181 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:50,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1037966046, now seen corresponding path program 9 times [2024-06-28 03:37:50,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:50,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239474656] [2024-06-28 03:37:50,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:50,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:50,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:50,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:50,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239474656] [2024-06-28 03:37:50,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239474656] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:50,993 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:50,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:37:50,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450747973] [2024-06-28 03:37:50,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:50,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:37:50,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:50,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:37:50,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:37:51,106 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:51,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 32 transitions, 176 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 03:37:51,108 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:51,108 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:51,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:51,226 INFO L124 PetriNetUnfolderBase]: 96/217 cut-off events. [2024-06-28 03:37:51,226 INFO L125 PetriNetUnfolderBase]: For 6846/6846 co-relation queries the response was YES. [2024-06-28 03:37:51,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003 conditions, 217 events. 96/217 cut-off events. For 6846/6846 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 786 event pairs, 41 based on Foata normal form. 6/222 useless extension candidates. Maximal degree in co-relation 971. Up to 138 conditions per place. [2024-06-28 03:37:51,227 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 22 selfloop transitions, 9 changer transitions 12/45 dead transitions. [2024-06-28 03:37:51,227 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 45 transitions, 294 flow [2024-06-28 03:37:51,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:51,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:51,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 88 transitions. [2024-06-28 03:37:51,228 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30344827586206896 [2024-06-28 03:37:51,228 INFO L175 Difference]: Start difference. First operand has 89 places, 32 transitions, 176 flow. Second operand 10 states and 88 transitions. [2024-06-28 03:37:51,228 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 45 transitions, 294 flow [2024-06-28 03:37:51,233 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 45 transitions, 260 flow, removed 13 selfloop flow, removed 15 redundant places. [2024-06-28 03:37:51,233 INFO L231 Difference]: Finished difference. Result has 67 places, 28 transitions, 147 flow [2024-06-28 03:37:51,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=147, PETRI_PLACES=67, PETRI_TRANSITIONS=28} [2024-06-28 03:37:51,234 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 39 predicate places. [2024-06-28 03:37:51,234 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 28 transitions, 147 flow [2024-06-28 03:37:51,234 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 03:37:51,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:51,234 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 03:37:51,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-28 03:37:51,234 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 03:37:51,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:51,234 INFO L85 PathProgramCache]: Analyzing trace with hash 504736730, now seen corresponding path program 10 times [2024-06-28 03:37:51,235 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:51,235 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237051104] [2024-06-28 03:37:51,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:51,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:51,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:52,296 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 03:37:52,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:52,296 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237051104] [2024-06-28 03:37:52,296 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237051104] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:52,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:52,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:37:52,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397951562] [2024-06-28 03:37:52,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:52,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:37:52,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:52,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:37:52,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:37:52,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:52,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 28 transitions, 147 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 03:37:52,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:52,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:52,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:52,544 INFO L124 PetriNetUnfolderBase]: 72/165 cut-off events. [2024-06-28 03:37:52,544 INFO L125 PetriNetUnfolderBase]: For 2018/2018 co-relation queries the response was YES. [2024-06-28 03:37:52,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 620 conditions, 165 events. 72/165 cut-off events. For 2018/2018 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 528 event pairs, 28 based on Foata normal form. 6/170 useless extension candidates. Maximal degree in co-relation 598. Up to 95 conditions per place. [2024-06-28 03:37:52,545 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 18 selfloop transitions, 9 changer transitions 11/40 dead transitions. [2024-06-28 03:37:52,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 40 transitions, 249 flow [2024-06-28 03:37:52,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:52,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:52,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 85 transitions. [2024-06-28 03:37:52,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29310344827586204 [2024-06-28 03:37:52,545 INFO L175 Difference]: Start difference. First operand has 67 places, 28 transitions, 147 flow. Second operand 10 states and 85 transitions. [2024-06-28 03:37:52,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 40 transitions, 249 flow [2024-06-28 03:37:52,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 40 transitions, 223 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-06-28 03:37:52,547 INFO L231 Difference]: Finished difference. Result has 61 places, 25 transitions, 127 flow [2024-06-28 03:37:52,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=127, PETRI_PLACES=61, PETRI_TRANSITIONS=25} [2024-06-28 03:37:52,547 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 33 predicate places. [2024-06-28 03:37:52,547 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 25 transitions, 127 flow [2024-06-28 03:37:52,548 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 03:37:52,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:52,548 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 03:37:52,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-28 03:37:52,548 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 03:37:52,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:52,548 INFO L85 PathProgramCache]: Analyzing trace with hash 784877550, now seen corresponding path program 11 times [2024-06-28 03:37:52,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:52,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676353618] [2024-06-28 03:37:52,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:52,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:52,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:53,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:53,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676353618] [2024-06-28 03:37:53,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676353618] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:53,396 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:53,396 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-28 03:37:53,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200531387] [2024-06-28 03:37:53,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:53,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-28 03:37:53,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:53,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-28 03:37:53,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-28 03:37:53,467 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:53,467 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 25 transitions, 127 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 03:37:53,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:53,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:53,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:53,579 INFO L124 PetriNetUnfolderBase]: 47/114 cut-off events. [2024-06-28 03:37:53,579 INFO L125 PetriNetUnfolderBase]: For 868/868 co-relation queries the response was YES. [2024-06-28 03:37:53,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385 conditions, 114 events. 47/114 cut-off events. For 868/868 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 289 event pairs, 4 based on Foata normal form. 6/119 useless extension candidates. Maximal degree in co-relation 366. Up to 38 conditions per place. [2024-06-28 03:37:53,580 INFO L140 encePairwiseOnDemand]: 20/29 looper letters, 17 selfloop transitions, 7 changer transitions 11/37 dead transitions. [2024-06-28 03:37:53,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 37 transitions, 223 flow [2024-06-28 03:37:53,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-28 03:37:53,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-28 03:37:53,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 83 transitions. [2024-06-28 03:37:53,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28620689655172415 [2024-06-28 03:37:53,581 INFO L175 Difference]: Start difference. First operand has 61 places, 25 transitions, 127 flow. Second operand 10 states and 83 transitions. [2024-06-28 03:37:53,581 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 37 transitions, 223 flow [2024-06-28 03:37:53,582 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 37 transitions, 199 flow, removed 3 selfloop flow, removed 9 redundant places. [2024-06-28 03:37:53,582 INFO L231 Difference]: Finished difference. Result has 56 places, 20 transitions, 96 flow [2024-06-28 03:37:53,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=103, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=96, PETRI_PLACES=56, PETRI_TRANSITIONS=20} [2024-06-28 03:37:53,582 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 28 predicate places. [2024-06-28 03:37:53,582 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 20 transitions, 96 flow [2024-06-28 03:37:53,583 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 03:37:53,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-28 03:37:53,583 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 03:37:53,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-28 03:37:53,583 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 03:37:53,583 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-28 03:37:53,583 INFO L85 PathProgramCache]: Analyzing trace with hash 925368354, now seen corresponding path program 12 times [2024-06-28 03:37:53,583 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-28 03:37:53,583 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005352474] [2024-06-28 03:37:53,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-28 03:37:53,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-28 03:37:53,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-28 03:37:54,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-28 03:37:54,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-28 03:37:54,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005352474] [2024-06-28 03:37:54,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005352474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-28 03:37:54,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-28 03:37:54,420 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-28 03:37:54,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260320621] [2024-06-28 03:37:54,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-28 03:37:54,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-28 03:37:54,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-28 03:37:54,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-28 03:37:54,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-28 03:37:54,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 29 [2024-06-28 03:37:54,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 20 transitions, 96 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 03:37:54,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-28 03:37:54,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 29 [2024-06-28 03:37:54,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-28 03:37:54,648 INFO L124 PetriNetUnfolderBase]: 19/54 cut-off events. [2024-06-28 03:37:54,649 INFO L125 PetriNetUnfolderBase]: For 310/310 co-relation queries the response was YES. [2024-06-28 03:37:54,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 165 conditions, 54 events. 19/54 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 69 event pairs, 0 based on Foata normal form. 6/59 useless extension candidates. Maximal degree in co-relation 148. Up to 24 conditions per place. [2024-06-28 03:37:54,649 INFO L140 encePairwiseOnDemand]: 21/29 looper letters, 0 selfloop transitions, 0 changer transitions 25/25 dead transitions. [2024-06-28 03:37:54,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 25 transitions, 132 flow [2024-06-28 03:37:54,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-28 03:37:54,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-28 03:37:54,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 69 transitions. [2024-06-28 03:37:54,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26436781609195403 [2024-06-28 03:37:54,650 INFO L175 Difference]: Start difference. First operand has 56 places, 20 transitions, 96 flow. Second operand 9 states and 69 transitions. [2024-06-28 03:37:54,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 25 transitions, 132 flow [2024-06-28 03:37:54,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 25 transitions, 104 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-06-28 03:37:54,651 INFO L231 Difference]: Finished difference. Result has 44 places, 0 transitions, 0 flow [2024-06-28 03:37:54,651 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=44, PETRI_TRANSITIONS=0} [2024-06-28 03:37:54,651 INFO L281 CegarLoopForPetriNet]: 28 programPoint places, 16 predicate places. [2024-06-28 03:37:54,651 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 0 transitions, 0 flow [2024-06-28 03:37:54,651 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 03:37:54,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-28 03:37:54,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-28 03:37:54,654 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-28 03:37:54,655 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-28 03:37:54,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-28 03:37:54,655 INFO L445 BasicCegarLoop]: Path program histogram: [19, 12, 10, 10, 6, 6, 5, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-06-28 03:37:54,658 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-28 03:37:54,658 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-28 03:37:54,662 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-28 03:37:54,662 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-28 03:37:54,663 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.06 03:37:54 BasicIcfg [2024-06-28 03:37:54,663 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-28 03:37:54,664 INFO L158 Benchmark]: Toolchain (without parser) took 91545.61ms. Allocated memory was 155.2MB in the beginning and 903.9MB in the end (delta: 748.7MB). Free memory was 79.1MB in the beginning and 739.6MB in the end (delta: -660.4MB). Peak memory consumption was 90.4MB. Max. memory is 16.1GB. [2024-06-28 03:37:54,664 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory is still 75.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:37:54,664 INFO L158 Benchmark]: Witness Parser took 0.18ms. Allocated memory is still 155.2MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-28 03:37:54,664 INFO L158 Benchmark]: CACSL2BoogieTranslator took 705.57ms. Allocated memory is still 155.2MB. Free memory was 78.9MB in the beginning and 110.3MB in the end (delta: -31.4MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. [2024-06-28 03:37:54,665 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.40ms. Allocated memory is still 155.2MB. Free memory was 110.3MB in the beginning and 107.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-28 03:37:54,665 INFO L158 Benchmark]: Boogie Preprocessor took 94.94ms. Allocated memory is still 155.2MB. Free memory was 107.7MB in the beginning and 104.2MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-28 03:37:54,665 INFO L158 Benchmark]: RCFGBuilder took 765.76ms. Allocated memory is still 155.2MB. Free memory was 104.2MB in the beginning and 123.7MB in the end (delta: -19.5MB). Peak memory consumption was 53.3MB. Max. memory is 16.1GB. [2024-06-28 03:37:54,665 INFO L158 Benchmark]: TraceAbstraction took 89920.83ms. Allocated memory was 155.2MB in the beginning and 903.9MB in the end (delta: 748.7MB). Free memory was 122.9MB in the beginning and 739.6MB in the end (delta: -616.6MB). Peak memory consumption was 133.1MB. Max. memory is 16.1GB. [2024-06-28 03:37:54,666 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 113.2MB. Free memory is still 75.7MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.18ms. Allocated memory is still 155.2MB. Free memory is still 84.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 705.57ms. Allocated memory is still 155.2MB. Free memory was 78.9MB in the beginning and 110.3MB in the end (delta: -31.4MB). Peak memory consumption was 19.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.40ms. Allocated memory is still 155.2MB. Free memory was 110.3MB in the beginning and 107.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 94.94ms. Allocated memory is still 155.2MB. Free memory was 107.7MB in the beginning and 104.2MB in the end (delta: 3.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 765.76ms. Allocated memory is still 155.2MB. Free memory was 104.2MB in the beginning and 123.7MB in the end (delta: -19.5MB). Peak memory consumption was 53.3MB. Max. memory is 16.1GB. * TraceAbstraction took 89920.83ms. Allocated memory was 155.2MB in the beginning and 903.9MB in the end (delta: 748.7MB). Free memory was 122.9MB in the beginning and 739.6MB in the end (delta: -616.6MB). Peak memory consumption was 133.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 795]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 796]: 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, 46 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: 89.8s, OverallIterations: 93, TraceHistogramMax: 1, PathProgramHistogramMax: 19, EmptinessCheckTime: 0.0s, AutomataDifference: 31.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 4716 SdHoareTripleChecker+Valid, 16.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3918 mSDsluCounter, 2850 SdHoareTripleChecker+Invalid, 14.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 2449 mSDsCounter, 1019 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 25159 IncrementalHoareTripleChecker+Invalid, 26178 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1019 mSolverCounterUnsat, 401 mSDtfsCounter, 25159 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 874 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 866 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1500 ImplicationChecksByTransitivity, 22.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1824occurred in iteration=48, InterpolantAutomatonStates: 810, 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: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 56.9s InterpolantComputationTime, 1368 NumberOfCodeBlocks, 1368 NumberOfCodeBlocksAsserted, 93 NumberOfCheckSat, 1275 ConstructedInterpolants, 0 QuantifiedInterpolants, 53297 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 93 InterpolantComputations, 93 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 03:37:54,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE