./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.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/protection/rfi002_tso.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/rfi002_tso.i ./goblint.2024-06-19_11-23-25.files/protection/rfi002_tso.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 [2024-06-27 19:17:57,831 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 19:17:57,922 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 19:17:57,929 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 19:17:57,929 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 19:17:57,974 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 19:17:57,978 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 19:17:57,979 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 19:17:57,980 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 19:17:57,984 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 19:17:57,984 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 19:17:57,984 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 19:17:57,985 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 19:17:57,986 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 19:17:57,986 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 19:17:57,987 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 19:17:57,987 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 19:17:57,987 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 19:17:57,987 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 19:17:57,988 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 19:17:57,988 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 19:17:57,988 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 19:17:57,989 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 19:17:57,989 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 19:17:57,989 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 19:17:57,989 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 19:17:57,990 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 19:17:57,990 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 19:17:57,991 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 19:17:57,991 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 19:17:57,992 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 19:17:57,992 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 19:17:57,992 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:17:57,992 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 19:17:57,993 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 19:17:57,993 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 19:17:57,993 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 19:17:57,993 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 19:17:57,993 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 19:17:57,994 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 19:17:57,994 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 19:17:57,994 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 19:17:57,994 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 19:17:57,995 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 19:17:58,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 19:17:58,288 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 19:17:58,291 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 19:17:58,292 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 19:17:58,292 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 19:17:58,293 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2024-06-27 19:17:59,455 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 19:17:59,712 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 19:17:59,726 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi002_tso.i [2024-06-27 19:17:59,749 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7b795129/db6f0611984840a08aa48447e7f02edf/FLAGa09e8eaee [2024-06-27 19:17:59,760 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f7b795129/db6f0611984840a08aa48447e7f02edf [2024-06-27 19:17:59,762 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 19:17:59,763 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 19:17:59,763 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/rfi002_tso.yml/witness.yml [2024-06-27 19:17:59,933 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 19:17:59,934 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 19:17:59,936 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 19:17:59,936 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 19:17:59,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 19:17:59,942 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:17:59" (1/2) ... [2024-06-27 19:17:59,943 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22eed086 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:17:59, skipping insertion in model container [2024-06-27 19:17:59,943 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 07:17:59" (1/2) ... [2024-06-27 19:17:59,945 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2898d580 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 07:17:59, skipping insertion in model container [2024-06-27 19:17:59,945 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:17:59" (2/2) ... [2024-06-27 19:17:59,946 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22eed086 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:17:59, skipping insertion in model container [2024-06-27 19:17:59,946 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:17:59" (2/2) ... [2024-06-27 19:17:59,946 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 19:18:00,040 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 19:18:00,042 INFO L97 edCorrectnessWitness]: Location invariant before [L880-L880] (((((((((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0) [2024-06-27 19:18:00,042 INFO L97 edCorrectnessWitness]: Location invariant before [L879-L879] (((((((((((((((((((((((((! multithreaded || 0 <= __unbuffered_cnt) && (! multithreaded || x$flush_delayed == (_Bool)0)) && (! multithreaded || ((x$mem_tmp == 0 || x$mem_tmp == 1) || x$mem_tmp == 2))) && (! multithreaded || (x$w_buff0 == 0 || x$w_buff0 == 2))) && (! multithreaded || (x$w_buff1 == 0 || x$w_buff1 == 2))) && (! multithreaded || x$read_delayed_var == 0)) && (! multithreaded || ((__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1) || __unbuffered_p1_EBX == 2))) && (! multithreaded || ((__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1) || __unbuffered_p0_EAX == 2))) && (! multithreaded || x$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || x$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || ((x == 0 || x == 1) || x == 2))) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || y$r_buff0_thd0 == (_Bool)0)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || x$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || x$read_delayed == (_Bool)0) [2024-06-27 19:18:00,042 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 19:18:00,042 INFO L106 edCorrectnessWitness]: ghost_update [L877-L877] multithreaded = 1; [2024-06-27 19:18:00,088 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 19:18:00,518 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:18:00,533 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 19:18:00,678 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 19:18:00,730 INFO L206 MainTranslator]: Completed translation [2024-06-27 19:18:00,731 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:18:00 WrapperNode [2024-06-27 19:18:00,731 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 19:18:00,732 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 19:18:00,732 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 19:18:00,732 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 19:18:00,739 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 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,773 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 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,823 INFO L138 Inliner]: procedures = 174, calls = 41, calls flagged for inlining = 7, calls inlined = 9, statements flattened = 217 [2024-06-27 19:18:00,823 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 19:18:00,825 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 19:18:00,825 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 19:18:00,825 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 19:18:00,835 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,836 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,851 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,890 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]. [2024-06-27 19:18:00,892 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,893 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,904 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,906 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,908 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,910 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,914 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 19:18:00,915 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 19:18:00,915 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 19:18:00,915 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 19:18:00,916 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:18:00" (1/1) ... [2024-06-27 19:18:00,921 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 19:18:00,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 19:18:00,942 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) [2024-06-27 19:18:00,970 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 [2024-06-27 19:18:00,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 19:18:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 19:18:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 19:18:00,986 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 19:18:00,986 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 19:18:00,987 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 19:18:00,987 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 19:18:00,987 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 19:18:00,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 19:18:00,987 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 19:18:00,989 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-06-27 19:18:01,217 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 19:18:01,220 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 19:18:01,751 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 19:18:01,751 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 19:18:02,018 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 19:18:02,018 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 19:18:02,019 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:18:02 BoogieIcfgContainer [2024-06-27 19:18:02,019 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 19:18:02,022 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 19:18:02,022 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 19:18:02,025 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 19:18:02,026 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 07:17:59" (1/4) ... [2024-06-27 19:18:02,027 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615305f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 07:18:02, skipping insertion in model container [2024-06-27 19:18:02,027 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 07:17:59" (2/4) ... [2024-06-27 19:18:02,028 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615305f8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:18:02, skipping insertion in model container [2024-06-27 19:18:02,028 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 07:18:00" (3/4) ... [2024-06-27 19:18:02,029 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@615305f8 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 07:18:02, skipping insertion in model container [2024-06-27 19:18:02,029 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 07:18:02" (4/4) ... [2024-06-27 19:18:02,030 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi002_tso.i [2024-06-27 19:18:02,062 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 19:18:02,063 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 19:18:02,063 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 19:18:02,143 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 19:18:02,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-27 19:18:02,222 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-27 19:18:02,223 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:18:02,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 30 events. 0/30 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/28 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2024-06-27 19:18:02,227 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-27 19:18:02,232 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-27 19:18:02,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 19:18:02,255 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;@3079306a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 19:18:02,256 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 19:18:02,262 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 19:18:02,262 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 19:18:02,262 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 19:18:02,262 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:02,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 19:18:02,264 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)] === [2024-06-27 19:18:02,268 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:02,268 INFO L85 PathProgramCache]: Analyzing trace with hash 541946621, now seen corresponding path program 1 times [2024-06-27 19:18:02,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:02,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768355129] [2024-06-27 19:18:02,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:02,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:03,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:03,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:03,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768355129] [2024-06-27 19:18:03,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768355129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:03,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:03,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 19:18:03,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968394450] [2024-06-27 19:18:03,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:03,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 19:18:03,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:03,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 19:18:03,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 19:18:03,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:18:03,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:03,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:03,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:18:03,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:04,130 INFO L124 PetriNetUnfolderBase]: 257/455 cut-off events. [2024-06-27 19:18:04,131 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-06-27 19:18:04,133 INFO L83 FinitePrefix]: Finished finitePrefix Result has 927 conditions, 455 events. 257/455 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1664 event pairs, 163 based on Foata normal form. 1/449 useless extension candidates. Maximal degree in co-relation 916. Up to 447 conditions per place. [2024-06-27 19:18:04,137 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 24 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-27 19:18:04,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 123 flow [2024-06-27 19:18:04,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 19:18:04,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 19:18:04,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2024-06-27 19:18:04,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5208333333333334 [2024-06-27 19:18:04,149 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 50 transitions. [2024-06-27 19:18:04,150 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 123 flow [2024-06-27 19:18:04,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 120 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 19:18:04,154 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-27 19:18:04,156 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2024-06-27 19:18:04,159 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-27 19:18:04,159 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-27 19:18:04,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:04,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:04,160 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:04,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 19:18:04,160 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)] === [2024-06-27 19:18:04,161 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:04,161 INFO L85 PathProgramCache]: Analyzing trace with hash 1120352910, now seen corresponding path program 1 times [2024-06-27 19:18:04,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:04,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920475137] [2024-06-27 19:18:04,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:04,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:04,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:05,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:05,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:05,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920475137] [2024-06-27 19:18:05,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920475137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:05,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:05,360 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 19:18:05,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733960646] [2024-06-27 19:18:05,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:05,362 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 19:18:05,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:05,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 19:18:05,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 19:18:05,388 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:18:05,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 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) [2024-06-27 19:18:05,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:05,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:18:05,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:05,600 INFO L124 PetriNetUnfolderBase]: 251/445 cut-off events. [2024-06-27 19:18:05,600 INFO L125 PetriNetUnfolderBase]: For 86/86 co-relation queries the response was YES. [2024-06-27 19:18:05,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 445 events. 251/445 cut-off events. For 86/86 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1599 event pairs, 115 based on Foata normal form. 4/448 useless extension candidates. Maximal degree in co-relation 1004. Up to 419 conditions per place. [2024-06-27 19:18:05,606 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-27 19:18:05,606 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 169 flow [2024-06-27 19:18:05,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 19:18:05,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 19:18:05,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 64 transitions. [2024-06-27 19:18:05,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-06-27 19:18:05,610 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 64 transitions. [2024-06-27 19:18:05,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 169 flow [2024-06-27 19:18:05,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 166 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 19:18:05,615 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-27 19:18:05,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=70, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=97, PETRI_PLACES=35, PETRI_TRANSITIONS=28} [2024-06-27 19:18:05,617 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-27 19:18:05,617 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-27 19:18:05,618 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) [2024-06-27 19:18:05,618 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:05,618 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:05,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 19:18:05,618 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)] === [2024-06-27 19:18:05,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:05,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1377612947, now seen corresponding path program 1 times [2024-06-27 19:18:05,619 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:05,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658946270] [2024-06-27 19:18:05,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:05,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:07,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:07,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:07,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658946270] [2024-06-27 19:18:07,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658946270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:07,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:07,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-06-27 19:18:07,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355189254] [2024-06-27 19:18:07,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:07,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-06-27 19:18:07,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:07,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-06-27 19:18:07,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-06-27 19:18:07,801 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:18:07,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:07,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:07,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:18:07,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:08,177 INFO L124 PetriNetUnfolderBase]: 245/435 cut-off events. [2024-06-27 19:18:08,178 INFO L125 PetriNetUnfolderBase]: For 243/243 co-relation queries the response was YES. [2024-06-27 19:18:08,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1094 conditions, 435 events. 245/435 cut-off events. For 243/243 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1554 event pairs, 67 based on Foata normal form. 4/438 useless extension candidates. Maximal degree in co-relation 1080. Up to 391 conditions per place. [2024-06-27 19:18:08,181 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 34 selfloop transitions, 7 changer transitions 0/44 dead transitions. [2024-06-27 19:18:08,181 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 44 transitions, 221 flow [2024-06-27 19:18:08,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:18:08,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:18:08,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-06-27 19:18:08,183 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-27 19:18:08,184 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 78 transitions. [2024-06-27 19:18:08,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 44 transitions, 221 flow [2024-06-27 19:18:08,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 44 transitions, 212 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 19:18:08,187 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 121 flow [2024-06-27 19:18:08,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=121, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-27 19:18:08,188 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-27 19:18:08,189 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 121 flow [2024-06-27 19:18:08,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:08,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:08,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:08,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 19:18:08,190 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:08,190 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:08,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1633867756, now seen corresponding path program 1 times [2024-06-27 19:18:08,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:08,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236321270] [2024-06-27 19:18:08,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:08,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:08,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:09,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:09,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:09,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236321270] [2024-06-27 19:18:09,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236321270] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:09,216 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:09,216 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 19:18:09,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913263084] [2024-06-27 19:18:09,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:09,217 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 19:18:09,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:09,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 19:18:09,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 19:18:09,281 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:09,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 121 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:09,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:09,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:09,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:09,512 INFO L124 PetriNetUnfolderBase]: 243/432 cut-off events. [2024-06-27 19:18:09,514 INFO L125 PetriNetUnfolderBase]: For 416/416 co-relation queries the response was YES. [2024-06-27 19:18:09,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1185 conditions, 432 events. 243/432 cut-off events. For 416/416 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1540 event pairs, 108 based on Foata normal form. 1/432 useless extension candidates. Maximal degree in co-relation 1169. Up to 421 conditions per place. [2024-06-27 19:18:09,519 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 29 selfloop transitions, 6 changer transitions 0/37 dead transitions. [2024-06-27 19:18:09,519 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 37 transitions, 209 flow [2024-06-27 19:18:09,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 19:18:09,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 19:18:09,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 57 transitions. [2024-06-27 19:18:09,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-27 19:18:09,522 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 121 flow. Second operand 5 states and 57 transitions. [2024-06-27 19:18:09,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 37 transitions, 209 flow [2024-06-27 19:18:09,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 37 transitions, 194 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 19:18:09,525 INFO L231 Difference]: Finished difference. Result has 40 places, 32 transitions, 133 flow [2024-06-27 19:18:09,525 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=106, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=133, PETRI_PLACES=40, PETRI_TRANSITIONS=32} [2024-06-27 19:18:09,527 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 9 predicate places. [2024-06-27 19:18:09,527 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 32 transitions, 133 flow [2024-06-27 19:18:09,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:09,527 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:09,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:09,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 19:18:09,529 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:18:09,530 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:09,530 INFO L85 PathProgramCache]: Analyzing trace with hash 766702362, now seen corresponding path program 1 times [2024-06-27 19:18:09,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:09,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791432949] [2024-06-27 19:18:09,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:09,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:09,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:12,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:12,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:12,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791432949] [2024-06-27 19:18:12,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791432949] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:12,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:12,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:18:12,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603238953] [2024-06-27 19:18:12,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:12,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:18:12,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:12,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:18:12,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:18:12,809 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 32 [2024-06-27 19:18:12,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 32 transitions, 133 flow. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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) [2024-06-27 19:18:12,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:12,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 32 [2024-06-27 19:18:12,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:13,188 INFO L124 PetriNetUnfolderBase]: 239/424 cut-off events. [2024-06-27 19:18:13,188 INFO L125 PetriNetUnfolderBase]: For 588/588 co-relation queries the response was YES. [2024-06-27 19:18:13,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1223 conditions, 424 events. 239/424 cut-off events. For 588/588 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1483 event pairs, 41 based on Foata normal form. 4/427 useless extension candidates. Maximal degree in co-relation 1206. Up to 362 conditions per place. [2024-06-27 19:18:13,192 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 36 selfloop transitions, 8 changer transitions 0/47 dead transitions. [2024-06-27 19:18:13,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 47 transitions, 251 flow [2024-06-27 19:18:13,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:18:13,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:18:13,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-06-27 19:18:13,194 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4479166666666667 [2024-06-27 19:18:13,194 INFO L175 Difference]: Start difference. First operand has 40 places, 32 transitions, 133 flow. Second operand 6 states and 86 transitions. [2024-06-27 19:18:13,194 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 44 places, 47 transitions, 251 flow [2024-06-27 19:18:13,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 47 transitions, 240 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 19:18:13,196 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 134 flow [2024-06-27 19:18:13,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2024-06-27 19:18:13,197 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 11 predicate places. [2024-06-27 19:18:13,197 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 134 flow [2024-06-27 19:18:13,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 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) [2024-06-27 19:18:13,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:13,198 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:13,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 19:18:13,198 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)] === [2024-06-27 19:18:13,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:13,199 INFO L85 PathProgramCache]: Analyzing trace with hash -889705425, now seen corresponding path program 1 times [2024-06-27 19:18:13,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:13,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403696764] [2024-06-27 19:18:13,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:13,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:13,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:14,535 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:14,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:14,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403696764] [2024-06-27 19:18:14,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403696764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:14,537 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:14,537 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:18:14,537 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529971283] [2024-06-27 19:18:14,537 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:14,538 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:18:14,538 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:14,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:18:14,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:18:14,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:14,583 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 134 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) [2024-06-27 19:18:14,583 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:14,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:14,584 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:14,858 INFO L124 PetriNetUnfolderBase]: 237/421 cut-off events. [2024-06-27 19:18:14,858 INFO L125 PetriNetUnfolderBase]: For 822/822 co-relation queries the response was YES. [2024-06-27 19:18:14,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1281 conditions, 421 events. 237/421 cut-off events. For 822/822 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1494 event pairs, 103 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 1263. Up to 407 conditions per place. [2024-06-27 19:18:14,862 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 29 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2024-06-27 19:18:14,862 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 39 transitions, 230 flow [2024-06-27 19:18:14,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:18:14,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:18:14,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2024-06-27 19:18:14,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 19:18:14,864 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 134 flow. Second operand 6 states and 64 transitions. [2024-06-27 19:18:14,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 39 transitions, 230 flow [2024-06-27 19:18:14,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 210 flow, removed 3 selfloop flow, removed 4 redundant places. [2024-06-27 19:18:14,868 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 147 flow [2024-06-27 19:18:14,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=147, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-27 19:18:14,871 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-27 19:18:14,871 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 147 flow [2024-06-27 19:18:14,872 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) [2024-06-27 19:18:14,872 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:14,872 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:14,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 19:18:14,872 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)] === [2024-06-27 19:18:14,873 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:14,873 INFO L85 PathProgramCache]: Analyzing trace with hash -332448531, now seen corresponding path program 1 times [2024-06-27 19:18:14,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:14,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221422041] [2024-06-27 19:18:14,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:14,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:14,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:15,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:15,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:15,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221422041] [2024-06-27 19:18:15,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221422041] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:15,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:15,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:18:15,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111548030] [2024-06-27 19:18:15,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:15,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:18:15,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:15,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:18:15,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:18:15,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:15,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 147 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) [2024-06-27 19:18:15,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:15,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:15,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:16,401 INFO L124 PetriNetUnfolderBase]: 243/432 cut-off events. [2024-06-27 19:18:16,401 INFO L125 PetriNetUnfolderBase]: For 1082/1085 co-relation queries the response was YES. [2024-06-27 19:18:16,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1373 conditions, 432 events. 243/432 cut-off events. For 1082/1085 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1523 event pairs, 85 based on Foata normal form. 4/434 useless extension candidates. Maximal degree in co-relation 1353. Up to 399 conditions per place. [2024-06-27 19:18:16,404 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 35 selfloop transitions, 10 changer transitions 0/47 dead transitions. [2024-06-27 19:18:16,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 47 transitions, 275 flow [2024-06-27 19:18:16,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:18:16,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:18:16,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-27 19:18:16,405 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 19:18:16,406 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 147 flow. Second operand 6 states and 69 transitions. [2024-06-27 19:18:16,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 47 transitions, 275 flow [2024-06-27 19:18:16,407 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 47 transitions, 258 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 19:18:16,408 INFO L231 Difference]: Finished difference. Result has 47 places, 37 transitions, 178 flow [2024-06-27 19:18:16,408 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=178, PETRI_PLACES=47, PETRI_TRANSITIONS=37} [2024-06-27 19:18:16,409 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 16 predicate places. [2024-06-27 19:18:16,409 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 37 transitions, 178 flow [2024-06-27 19:18:16,409 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) [2024-06-27 19:18:16,409 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:16,409 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:16,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 19:18:16,410 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)] === [2024-06-27 19:18:16,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:16,410 INFO L85 PathProgramCache]: Analyzing trace with hash -896785815, now seen corresponding path program 2 times [2024-06-27 19:18:16,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:16,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327653565] [2024-06-27 19:18:16,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:16,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:17,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:17,607 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:17,607 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327653565] [2024-06-27 19:18:17,607 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327653565] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:17,607 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:17,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 19:18:17,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484579145] [2024-06-27 19:18:17,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:17,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 19:18:17,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:17,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 19:18:17,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 19:18:17,659 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:17,660 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 37 transitions, 178 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) [2024-06-27 19:18:17,660 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:17,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:17,660 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:17,949 INFO L124 PetriNetUnfolderBase]: 244/435 cut-off events. [2024-06-27 19:18:17,949 INFO L125 PetriNetUnfolderBase]: For 1463/1466 co-relation queries the response was YES. [2024-06-27 19:18:17,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1510 conditions, 435 events. 244/435 cut-off events. For 1463/1466 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1551 event pairs, 88 based on Foata normal form. 4/436 useless extension candidates. Maximal degree in co-relation 1488. Up to 388 conditions per place. [2024-06-27 19:18:17,953 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 34 selfloop transitions, 14 changer transitions 0/50 dead transitions. [2024-06-27 19:18:17,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 50 transitions, 336 flow [2024-06-27 19:18:17,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:18:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:18:17,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 70 transitions. [2024-06-27 19:18:17,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-27 19:18:17,956 INFO L175 Difference]: Start difference. First operand has 47 places, 37 transitions, 178 flow. Second operand 6 states and 70 transitions. [2024-06-27 19:18:17,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 50 transitions, 336 flow [2024-06-27 19:18:17,958 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 50 transitions, 324 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-06-27 19:18:17,959 INFO L231 Difference]: Finished difference. Result has 51 places, 41 transitions, 227 flow [2024-06-27 19:18:17,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=227, PETRI_PLACES=51, PETRI_TRANSITIONS=41} [2024-06-27 19:18:17,963 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-06-27 19:18:17,963 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 41 transitions, 227 flow [2024-06-27 19:18:17,964 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) [2024-06-27 19:18:17,964 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:17,964 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:17,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 19:18:17,964 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)] === [2024-06-27 19:18:17,965 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:17,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1811062677, now seen corresponding path program 1 times [2024-06-27 19:18:17,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:17,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448482356] [2024-06-27 19:18:17,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:17,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:17,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:19,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:19,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:19,556 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448482356] [2024-06-27 19:18:19,556 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448482356] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:19,556 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:19,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:18:19,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87243489] [2024-06-27 19:18:19,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:19,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:18:19,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:19,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:18:19,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:18:19,618 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:19,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 41 transitions, 227 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) [2024-06-27 19:18:19,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:19,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:19,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:19,910 INFO L124 PetriNetUnfolderBase]: 242/430 cut-off events. [2024-06-27 19:18:19,910 INFO L125 PetriNetUnfolderBase]: For 1835/1835 co-relation queries the response was YES. [2024-06-27 19:18:19,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1587 conditions, 430 events. 242/430 cut-off events. For 1835/1835 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1530 event pairs, 80 based on Foata normal form. 1/430 useless extension candidates. Maximal degree in co-relation 1563. Up to 413 conditions per place. [2024-06-27 19:18:19,914 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 38 selfloop transitions, 10 changer transitions 0/50 dead transitions. [2024-06-27 19:18:19,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 50 transitions, 349 flow [2024-06-27 19:18:19,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:19,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:19,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 72 transitions. [2024-06-27 19:18:19,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32142857142857145 [2024-06-27 19:18:19,915 INFO L175 Difference]: Start difference. First operand has 51 places, 41 transitions, 227 flow. Second operand 7 states and 72 transitions. [2024-06-27 19:18:19,918 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 50 transitions, 349 flow [2024-06-27 19:18:19,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 50 transitions, 334 flow, removed 4 selfloop flow, removed 2 redundant places. [2024-06-27 19:18:19,924 INFO L231 Difference]: Finished difference. Result has 56 places, 43 transitions, 251 flow [2024-06-27 19:18:19,924 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=251, PETRI_PLACES=56, PETRI_TRANSITIONS=43} [2024-06-27 19:18:19,925 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 25 predicate places. [2024-06-27 19:18:19,925 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 43 transitions, 251 flow [2024-06-27 19:18:19,925 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) [2024-06-27 19:18:19,925 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:19,926 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:19,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 19:18:19,926 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)] === [2024-06-27 19:18:19,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:19,926 INFO L85 PathProgramCache]: Analyzing trace with hash -515302453, now seen corresponding path program 1 times [2024-06-27 19:18:19,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:19,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522709855] [2024-06-27 19:18:19,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:19,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:19,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:21,342 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:21,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:21,343 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522709855] [2024-06-27 19:18:21,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522709855] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:21,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:21,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:18:21,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008662376] [2024-06-27 19:18:21,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:21,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:18:21,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:21,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:18:21,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:18:21,413 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:21,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 43 transitions, 251 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) [2024-06-27 19:18:21,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:21,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:21,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:21,880 INFO L124 PetriNetUnfolderBase]: 240/427 cut-off events. [2024-06-27 19:18:21,880 INFO L125 PetriNetUnfolderBase]: For 2146/2146 co-relation queries the response was YES. [2024-06-27 19:18:21,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1654 conditions, 427 events. 240/427 cut-off events. For 2146/2146 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1517 event pairs, 79 based on Foata normal form. 1/427 useless extension candidates. Maximal degree in co-relation 1628. Up to 392 conditions per place. [2024-06-27 19:18:21,884 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 40 selfloop transitions, 11 changer transitions 0/53 dead transitions. [2024-06-27 19:18:21,884 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 53 transitions, 379 flow [2024-06-27 19:18:21,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 19:18:21,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 19:18:21,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 69 transitions. [2024-06-27 19:18:21,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 19:18:21,885 INFO L175 Difference]: Start difference. First operand has 56 places, 43 transitions, 251 flow. Second operand 6 states and 69 transitions. [2024-06-27 19:18:21,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 53 transitions, 379 flow [2024-06-27 19:18:21,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 53 transitions, 354 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 19:18:21,890 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 256 flow [2024-06-27 19:18:21,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=256, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2024-06-27 19:18:21,891 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 26 predicate places. [2024-06-27 19:18:21,892 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 256 flow [2024-06-27 19:18:21,892 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) [2024-06-27 19:18:21,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:21,892 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:21,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 19:18:21,893 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)] === [2024-06-27 19:18:21,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:21,893 INFO L85 PathProgramCache]: Analyzing trace with hash -515296656, now seen corresponding path program 1 times [2024-06-27 19:18:21,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:21,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935493966] [2024-06-27 19:18:21,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:21,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:21,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:23,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:23,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:23,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935493966] [2024-06-27 19:18:23,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935493966] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:23,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:23,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:18:23,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060075600] [2024-06-27 19:18:23,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:23,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:18:23,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:23,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:18:23,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:18:23,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:23,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 256 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) [2024-06-27 19:18:23,398 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:23,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:23,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:23,809 INFO L124 PetriNetUnfolderBase]: 246/438 cut-off events. [2024-06-27 19:18:23,809 INFO L125 PetriNetUnfolderBase]: For 2641/2644 co-relation queries the response was YES. [2024-06-27 19:18:23,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1743 conditions, 438 events. 246/438 cut-off events. For 2641/2644 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1546 event pairs, 82 based on Foata normal form. 4/440 useless extension candidates. Maximal degree in co-relation 1716. Up to 397 conditions per place. [2024-06-27 19:18:23,813 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 43 selfloop transitions, 12 changer transitions 0/57 dead transitions. [2024-06-27 19:18:23,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 57 transitions, 410 flow [2024-06-27 19:18:23,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:23,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:23,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-27 19:18:23,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482142857142857 [2024-06-27 19:18:23,816 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 256 flow. Second operand 7 states and 78 transitions. [2024-06-27 19:18:23,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 57 transitions, 410 flow [2024-06-27 19:18:23,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 57 transitions, 383 flow, removed 1 selfloop flow, removed 5 redundant places. [2024-06-27 19:18:23,820 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 274 flow [2024-06-27 19:18:23,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=229, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=274, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2024-06-27 19:18:23,821 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-27 19:18:23,821 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 274 flow [2024-06-27 19:18:23,821 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) [2024-06-27 19:18:23,822 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:23,822 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:23,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 19:18:23,822 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)] === [2024-06-27 19:18:23,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:23,823 INFO L85 PathProgramCache]: Analyzing trace with hash -308376306, now seen corresponding path program 2 times [2024-06-27 19:18:23,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:23,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919132319] [2024-06-27 19:18:23,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:23,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:23,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:25,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:25,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:25,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919132319] [2024-06-27 19:18:25,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919132319] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:25,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:25,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:18:25,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008283821] [2024-06-27 19:18:25,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:25,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:18:25,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:25,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:18:25,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:18:25,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:25,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 274 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) [2024-06-27 19:18:25,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:25,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:25,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:25,777 INFO L124 PetriNetUnfolderBase]: 252/449 cut-off events. [2024-06-27 19:18:25,777 INFO L125 PetriNetUnfolderBase]: For 3220/3223 co-relation queries the response was YES. [2024-06-27 19:18:25,779 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1872 conditions, 449 events. 252/449 cut-off events. For 3220/3223 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1625 event pairs, 81 based on Foata normal form. 4/450 useless extension candidates. Maximal degree in co-relation 1844. Up to 373 conditions per place. [2024-06-27 19:18:25,781 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 37 selfloop transitions, 21 changer transitions 0/60 dead transitions. [2024-06-27 19:18:25,781 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 60 transitions, 474 flow [2024-06-27 19:18:25,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:25,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:25,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 80 transitions. [2024-06-27 19:18:25,782 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35714285714285715 [2024-06-27 19:18:25,782 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 274 flow. Second operand 7 states and 80 transitions. [2024-06-27 19:18:25,783 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 60 transitions, 474 flow [2024-06-27 19:18:25,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 60 transitions, 445 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 19:18:25,787 INFO L231 Difference]: Finished difference. Result has 61 places, 49 transitions, 328 flow [2024-06-27 19:18:25,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=328, PETRI_PLACES=61, PETRI_TRANSITIONS=49} [2024-06-27 19:18:25,787 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 30 predicate places. [2024-06-27 19:18:25,788 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 49 transitions, 328 flow [2024-06-27 19:18:25,788 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) [2024-06-27 19:18:25,788 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:25,788 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:25,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 19:18:25,788 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)] === [2024-06-27 19:18:25,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:25,789 INFO L85 PathProgramCache]: Analyzing trace with hash -308643216, now seen corresponding path program 3 times [2024-06-27 19:18:25,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:25,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738725242] [2024-06-27 19:18:25,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:25,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:27,245 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:27,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:27,246 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738725242] [2024-06-27 19:18:27,246 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738725242] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:27,246 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:27,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:18:27,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105431313] [2024-06-27 19:18:27,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:27,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:18:27,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:27,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:18:27,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:18:27,321 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:27,321 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 49 transitions, 328 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) [2024-06-27 19:18:27,321 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:27,321 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:27,321 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:27,612 INFO L124 PetriNetUnfolderBase]: 253/451 cut-off events. [2024-06-27 19:18:27,612 INFO L125 PetriNetUnfolderBase]: For 3734/3737 co-relation queries the response was YES. [2024-06-27 19:18:27,613 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1969 conditions, 451 events. 253/451 cut-off events. For 3734/3737 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1641 event pairs, 86 based on Foata normal form. 4/452 useless extension candidates. Maximal degree in co-relation 1940. Up to 397 conditions per place. [2024-06-27 19:18:27,614 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 43 selfloop transitions, 16 changer transitions 0/61 dead transitions. [2024-06-27 19:18:27,615 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 61 transitions, 494 flow [2024-06-27 19:18:27,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:27,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:27,615 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-27 19:18:27,616 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482142857142857 [2024-06-27 19:18:27,616 INFO L175 Difference]: Start difference. First operand has 61 places, 49 transitions, 328 flow. Second operand 7 states and 78 transitions. [2024-06-27 19:18:27,616 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 61 transitions, 494 flow [2024-06-27 19:18:27,619 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 61 transitions, 461 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 19:18:27,620 INFO L231 Difference]: Finished difference. Result has 65 places, 51 transitions, 356 flow [2024-06-27 19:18:27,620 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=297, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=356, PETRI_PLACES=65, PETRI_TRANSITIONS=51} [2024-06-27 19:18:27,620 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2024-06-27 19:18:27,621 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 51 transitions, 356 flow [2024-06-27 19:18:27,621 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) [2024-06-27 19:18:27,621 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:27,621 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:27,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 19:18:27,621 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)] === [2024-06-27 19:18:27,622 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:27,622 INFO L85 PathProgramCache]: Analyzing trace with hash -308366386, now seen corresponding path program 1 times [2024-06-27 19:18:27,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:27,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158806110] [2024-06-27 19:18:27,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:27,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:27,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:29,862 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:29,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:29,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158806110] [2024-06-27 19:18:29,863 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158806110] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:29,863 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:29,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:29,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785417068] [2024-06-27 19:18:29,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:29,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:29,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:29,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:29,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:29,970 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:29,970 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 51 transitions, 356 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) [2024-06-27 19:18:29,970 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:29,970 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:29,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:30,261 INFO L124 PetriNetUnfolderBase]: 251/446 cut-off events. [2024-06-27 19:18:30,264 INFO L125 PetriNetUnfolderBase]: For 4057/4057 co-relation queries the response was YES. [2024-06-27 19:18:30,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2011 conditions, 446 events. 251/446 cut-off events. For 4057/4057 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1621 event pairs, 81 based on Foata normal form. 1/446 useless extension candidates. Maximal degree in co-relation 1980. Up to 426 conditions per place. [2024-06-27 19:18:30,268 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 47 selfloop transitions, 12 changer transitions 0/61 dead transitions. [2024-06-27 19:18:30,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 61 transitions, 504 flow [2024-06-27 19:18:30,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:30,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:30,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 80 transitions. [2024-06-27 19:18:30,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-27 19:18:30,269 INFO L175 Difference]: Start difference. First operand has 65 places, 51 transitions, 356 flow. Second operand 8 states and 80 transitions. [2024-06-27 19:18:30,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 61 transitions, 504 flow [2024-06-27 19:18:30,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 61 transitions, 465 flow, removed 5 selfloop flow, removed 5 redundant places. [2024-06-27 19:18:30,274 INFO L231 Difference]: Finished difference. Result has 68 places, 53 transitions, 362 flow [2024-06-27 19:18:30,275 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=362, PETRI_PLACES=68, PETRI_TRANSITIONS=53} [2024-06-27 19:18:30,275 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-06-27 19:18:30,276 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 53 transitions, 362 flow [2024-06-27 19:18:30,276 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) [2024-06-27 19:18:30,276 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:30,276 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:30,276 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 19:18:30,276 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)] === [2024-06-27 19:18:30,277 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:30,277 INFO L85 PathProgramCache]: Analyzing trace with hash 1200906026, now seen corresponding path program 1 times [2024-06-27 19:18:30,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:30,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1333356510] [2024-06-27 19:18:30,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:30,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:32,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:32,034 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:32,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1333356510] [2024-06-27 19:18:32,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1333356510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:32,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:32,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:32,035 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406297379] [2024-06-27 19:18:32,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:32,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:32,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:32,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:32,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:32,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:32,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 53 transitions, 362 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) [2024-06-27 19:18:32,138 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:32,138 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:32,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:32,643 INFO L124 PetriNetUnfolderBase]: 257/456 cut-off events. [2024-06-27 19:18:32,643 INFO L125 PetriNetUnfolderBase]: For 4624/4624 co-relation queries the response was YES. [2024-06-27 19:18:32,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2095 conditions, 456 events. 257/456 cut-off events. For 4624/4624 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1646 event pairs, 59 based on Foata normal form. 2/457 useless extension candidates. Maximal degree in co-relation 2063. Up to 404 conditions per place. [2024-06-27 19:18:32,647 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 57 selfloop transitions, 11 changer transitions 0/70 dead transitions. [2024-06-27 19:18:32,647 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 546 flow [2024-06-27 19:18:32,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:32,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:32,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 81 transitions. [2024-06-27 19:18:32,648 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36160714285714285 [2024-06-27 19:18:32,649 INFO L175 Difference]: Start difference. First operand has 68 places, 53 transitions, 362 flow. Second operand 7 states and 81 transitions. [2024-06-27 19:18:32,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 546 flow [2024-06-27 19:18:32,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 70 transitions, 517 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:32,655 INFO L231 Difference]: Finished difference. Result has 69 places, 55 transitions, 376 flow [2024-06-27 19:18:32,655 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=376, PETRI_PLACES=69, PETRI_TRANSITIONS=55} [2024-06-27 19:18:32,656 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 38 predicate places. [2024-06-27 19:18:32,656 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 55 transitions, 376 flow [2024-06-27 19:18:32,657 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) [2024-06-27 19:18:32,657 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:32,657 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:32,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 19:18:32,657 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)] === [2024-06-27 19:18:32,657 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:32,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1201026182, now seen corresponding path program 1 times [2024-06-27 19:18:32,658 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:32,658 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405405368] [2024-06-27 19:18:32,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:32,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:32,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:34,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:34,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:34,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405405368] [2024-06-27 19:18:34,180 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405405368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:34,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:34,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:34,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571973115] [2024-06-27 19:18:34,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:34,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:34,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:34,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:34,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:34,260 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:34,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 55 transitions, 376 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) [2024-06-27 19:18:34,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:34,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:34,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:34,629 INFO L124 PetriNetUnfolderBase]: 255/453 cut-off events. [2024-06-27 19:18:34,629 INFO L125 PetriNetUnfolderBase]: For 5057/5057 co-relation queries the response was YES. [2024-06-27 19:18:34,631 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2149 conditions, 453 events. 255/453 cut-off events. For 5057/5057 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1636 event pairs, 76 based on Foata normal form. 1/453 useless extension candidates. Maximal degree in co-relation 2116. Up to 407 conditions per place. [2024-06-27 19:18:34,634 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 50 selfloop transitions, 15 changer transitions 0/67 dead transitions. [2024-06-27 19:18:34,634 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 67 transitions, 538 flow [2024-06-27 19:18:34,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:34,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:34,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 78 transitions. [2024-06-27 19:18:34,635 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3482142857142857 [2024-06-27 19:18:34,635 INFO L175 Difference]: Start difference. First operand has 69 places, 55 transitions, 376 flow. Second operand 7 states and 78 transitions. [2024-06-27 19:18:34,636 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 67 transitions, 538 flow [2024-06-27 19:18:34,641 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 67 transitions, 507 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 19:18:34,642 INFO L231 Difference]: Finished difference. Result has 71 places, 55 transitions, 383 flow [2024-06-27 19:18:34,643 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=345, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=71, PETRI_TRANSITIONS=55} [2024-06-27 19:18:34,643 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 40 predicate places. [2024-06-27 19:18:34,643 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 55 transitions, 383 flow [2024-06-27 19:18:34,644 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) [2024-06-27 19:18:34,644 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:34,644 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:34,644 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 19:18:34,644 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)] === [2024-06-27 19:18:34,645 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:34,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1205494646, now seen corresponding path program 2 times [2024-06-27 19:18:34,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:34,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204486374] [2024-06-27 19:18:34,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:34,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:34,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:36,339 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:36,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:36,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204486374] [2024-06-27 19:18:36,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204486374] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:36,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:36,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:36,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945071947] [2024-06-27 19:18:36,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:36,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:36,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:36,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:36,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:36,412 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:36,413 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 55 transitions, 383 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) [2024-06-27 19:18:36,413 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:36,413 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:36,413 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:36,898 INFO L124 PetriNetUnfolderBase]: 261/463 cut-off events. [2024-06-27 19:18:36,898 INFO L125 PetriNetUnfolderBase]: For 5893/5893 co-relation queries the response was YES. [2024-06-27 19:18:36,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2232 conditions, 463 events. 261/463 cut-off events. For 5893/5893 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1682 event pairs, 56 based on Foata normal form. 2/464 useless extension candidates. Maximal degree in co-relation 2198. Up to 394 conditions per place. [2024-06-27 19:18:36,901 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 53 selfloop transitions, 16 changer transitions 0/71 dead transitions. [2024-06-27 19:18:36,902 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 71 transitions, 571 flow [2024-06-27 19:18:36,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:36,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:36,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-27 19:18:36,903 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-27 19:18:36,903 INFO L175 Difference]: Start difference. First operand has 71 places, 55 transitions, 383 flow. Second operand 7 states and 82 transitions. [2024-06-27 19:18:36,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 71 transitions, 571 flow [2024-06-27 19:18:36,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 71 transitions, 529 flow, removed 3 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:36,910 INFO L231 Difference]: Finished difference. Result has 72 places, 57 transitions, 399 flow [2024-06-27 19:18:36,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=399, PETRI_PLACES=72, PETRI_TRANSITIONS=57} [2024-06-27 19:18:36,911 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 41 predicate places. [2024-06-27 19:18:36,911 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 57 transitions, 399 flow [2024-06-27 19:18:36,911 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) [2024-06-27 19:18:36,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:36,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:36,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 19:18:36,912 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)] === [2024-06-27 19:18:36,912 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:36,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1655404244, now seen corresponding path program 1 times [2024-06-27 19:18:36,912 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:36,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852892371] [2024-06-27 19:18:36,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:36,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:38,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:38,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:38,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852892371] [2024-06-27 19:18:38,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852892371] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:38,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:38,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:38,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412037156] [2024-06-27 19:18:38,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:38,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:38,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:38,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:38,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:38,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:38,703 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 57 transitions, 399 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) [2024-06-27 19:18:38,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:38,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:38,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:39,076 INFO L124 PetriNetUnfolderBase]: 267/474 cut-off events. [2024-06-27 19:18:39,076 INFO L125 PetriNetUnfolderBase]: For 6682/6685 co-relation queries the response was YES. [2024-06-27 19:18:39,078 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2344 conditions, 474 events. 267/474 cut-off events. For 6682/6685 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1734 event pairs, 79 based on Foata normal form. 4/476 useless extension candidates. Maximal degree in co-relation 2309. Up to 425 conditions per place. [2024-06-27 19:18:39,080 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 57 selfloop transitions, 14 changer transitions 0/73 dead transitions. [2024-06-27 19:18:39,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 73 transitions, 595 flow [2024-06-27 19:18:39,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:39,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:39,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-27 19:18:39,082 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-27 19:18:39,082 INFO L175 Difference]: Start difference. First operand has 72 places, 57 transitions, 399 flow. Second operand 8 states and 87 transitions. [2024-06-27 19:18:39,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 73 transitions, 595 flow [2024-06-27 19:18:39,089 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 73 transitions, 555 flow, removed 6 selfloop flow, removed 5 redundant places. [2024-06-27 19:18:39,090 INFO L231 Difference]: Finished difference. Result has 75 places, 59 transitions, 412 flow [2024-06-27 19:18:39,090 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=359, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=412, PETRI_PLACES=75, PETRI_TRANSITIONS=59} [2024-06-27 19:18:39,091 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 44 predicate places. [2024-06-27 19:18:39,091 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 59 transitions, 412 flow [2024-06-27 19:18:39,091 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) [2024-06-27 19:18:39,091 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:39,092 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:39,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 19:18:39,092 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)] === [2024-06-27 19:18:39,092 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:39,092 INFO L85 PathProgramCache]: Analyzing trace with hash -1482921298, now seen corresponding path program 3 times [2024-06-27 19:18:39,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:39,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508919067] [2024-06-27 19:18:39,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:39,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:39,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:40,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:40,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:40,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508919067] [2024-06-27 19:18:40,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508919067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:40,732 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:40,732 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 19:18:40,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974602527] [2024-06-27 19:18:40,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:40,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 19:18:40,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:40,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 19:18:40,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-06-27 19:18:40,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:40,785 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 59 transitions, 412 flow. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:40,785 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:40,785 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:40,785 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:41,225 INFO L124 PetriNetUnfolderBase]: 263/469 cut-off events. [2024-06-27 19:18:41,225 INFO L125 PetriNetUnfolderBase]: For 7082/7085 co-relation queries the response was YES. [2024-06-27 19:18:41,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2346 conditions, 469 events. 263/469 cut-off events. For 7082/7085 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1726 event pairs, 68 based on Foata normal form. 2/468 useless extension candidates. Maximal degree in co-relation 2310. Up to 383 conditions per place. [2024-06-27 19:18:41,230 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 52 selfloop transitions, 19 changer transitions 0/73 dead transitions. [2024-06-27 19:18:41,230 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 73 transitions, 604 flow [2024-06-27 19:18:41,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 19:18:41,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 19:18:41,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 82 transitions. [2024-06-27 19:18:41,231 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36607142857142855 [2024-06-27 19:18:41,231 INFO L175 Difference]: Start difference. First operand has 75 places, 59 transitions, 412 flow. Second operand 7 states and 82 transitions. [2024-06-27 19:18:41,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 73 transitions, 604 flow [2024-06-27 19:18:41,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 73 transitions, 567 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:41,242 INFO L231 Difference]: Finished difference. Result has 76 places, 61 transitions, 442 flow [2024-06-27 19:18:41,242 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=442, PETRI_PLACES=76, PETRI_TRANSITIONS=61} [2024-06-27 19:18:41,243 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 45 predicate places. [2024-06-27 19:18:41,243 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 61 transitions, 442 flow [2024-06-27 19:18:41,243 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:18:41,243 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:41,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:41,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 19:18:41,244 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)] === [2024-06-27 19:18:41,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:41,245 INFO L85 PathProgramCache]: Analyzing trace with hash -978003382, now seen corresponding path program 2 times [2024-06-27 19:18:41,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:41,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [274021712] [2024-06-27 19:18:41,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:41,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:41,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:42,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:42,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:42,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [274021712] [2024-06-27 19:18:42,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [274021712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:42,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:42,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:42,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248878543] [2024-06-27 19:18:42,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:42,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:42,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:42,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:42,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:42,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:42,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 61 transitions, 442 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) [2024-06-27 19:18:42,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:42,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:42,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:43,283 INFO L124 PetriNetUnfolderBase]: 269/479 cut-off events. [2024-06-27 19:18:43,283 INFO L125 PetriNetUnfolderBase]: For 7889/7892 co-relation queries the response was YES. [2024-06-27 19:18:43,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2458 conditions, 479 events. 269/479 cut-off events. For 7889/7892 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1771 event pairs, 80 based on Foata normal form. 4/480 useless extension candidates. Maximal degree in co-relation 2421. Up to 417 conditions per place. [2024-06-27 19:18:43,286 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 55 selfloop transitions, 18 changer transitions 0/75 dead transitions. [2024-06-27 19:18:43,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 75 transitions, 642 flow [2024-06-27 19:18:43,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:43,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:43,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-27 19:18:43,287 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-27 19:18:43,287 INFO L175 Difference]: Start difference. First operand has 76 places, 61 transitions, 442 flow. Second operand 8 states and 87 transitions. [2024-06-27 19:18:43,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 75 transitions, 642 flow [2024-06-27 19:18:43,294 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 75 transitions, 591 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 19:18:43,296 INFO L231 Difference]: Finished difference. Result has 79 places, 63 transitions, 456 flow [2024-06-27 19:18:43,296 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=456, PETRI_PLACES=79, PETRI_TRANSITIONS=63} [2024-06-27 19:18:43,296 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 48 predicate places. [2024-06-27 19:18:43,297 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 63 transitions, 456 flow [2024-06-27 19:18:43,297 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) [2024-06-27 19:18:43,297 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:43,297 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:43,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 19:18:43,297 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)] === [2024-06-27 19:18:43,298 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:43,298 INFO L85 PathProgramCache]: Analyzing trace with hash -969432502, now seen corresponding path program 3 times [2024-06-27 19:18:43,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:43,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982744561] [2024-06-27 19:18:43,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:43,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:44,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:44,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:44,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982744561] [2024-06-27 19:18:44,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982744561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:44,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:44,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:44,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558292087] [2024-06-27 19:18:44,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:44,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:44,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:44,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:44,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:45,049 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:45,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 63 transitions, 456 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) [2024-06-27 19:18:45,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:45,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:45,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:45,400 INFO L124 PetriNetUnfolderBase]: 275/489 cut-off events. [2024-06-27 19:18:45,401 INFO L125 PetriNetUnfolderBase]: For 8754/8757 co-relation queries the response was YES. [2024-06-27 19:18:45,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2555 conditions, 489 events. 275/489 cut-off events. For 8754/8757 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1821 event pairs, 76 based on Foata normal form. 4/490 useless extension candidates. Maximal degree in co-relation 2517. Up to 377 conditions per place. [2024-06-27 19:18:45,404 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 46 selfloop transitions, 32 changer transitions 0/80 dead transitions. [2024-06-27 19:18:45,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 80 transitions, 736 flow [2024-06-27 19:18:45,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:45,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:45,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-27 19:18:45,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-27 19:18:45,407 INFO L175 Difference]: Start difference. First operand has 79 places, 63 transitions, 456 flow. Second operand 8 states and 90 transitions. [2024-06-27 19:18:45,407 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 80 transitions, 736 flow [2024-06-27 19:18:45,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 80 transitions, 687 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:45,415 INFO L231 Difference]: Finished difference. Result has 81 places, 67 transitions, 528 flow [2024-06-27 19:18:45,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=528, PETRI_PLACES=81, PETRI_TRANSITIONS=67} [2024-06-27 19:18:45,415 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 50 predicate places. [2024-06-27 19:18:45,416 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 67 transitions, 528 flow [2024-06-27 19:18:45,416 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) [2024-06-27 19:18:45,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:45,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:45,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 19:18:45,416 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)] === [2024-06-27 19:18:45,417 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:45,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1482683714, now seen corresponding path program 4 times [2024-06-27 19:18:45,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:45,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324005534] [2024-06-27 19:18:45,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:45,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:45,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:47,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:47,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:47,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324005534] [2024-06-27 19:18:47,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324005534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:47,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:47,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:47,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329092662] [2024-06-27 19:18:47,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:47,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:47,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:47,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:47,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:47,080 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:47,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 67 transitions, 528 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) [2024-06-27 19:18:47,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:47,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:47,081 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:47,359 INFO L124 PetriNetUnfolderBase]: 276/491 cut-off events. [2024-06-27 19:18:47,360 INFO L125 PetriNetUnfolderBase]: For 9423/9426 co-relation queries the response was YES. [2024-06-27 19:18:47,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2652 conditions, 491 events. 276/491 cut-off events. For 9423/9426 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1828 event pairs, 80 based on Foata normal form. 4/492 useless extension candidates. Maximal degree in co-relation 2613. Up to 409 conditions per place. [2024-06-27 19:18:47,364 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 54 selfloop transitions, 25 changer transitions 0/81 dead transitions. [2024-06-27 19:18:47,364 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 81 transitions, 748 flow [2024-06-27 19:18:47,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:47,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:47,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 88 transitions. [2024-06-27 19:18:47,366 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:18:47,366 INFO L175 Difference]: Start difference. First operand has 81 places, 67 transitions, 528 flow. Second operand 8 states and 88 transitions. [2024-06-27 19:18:47,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 81 transitions, 748 flow [2024-06-27 19:18:47,374 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 81 transitions, 690 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 19:18:47,376 INFO L231 Difference]: Finished difference. Result has 85 places, 69 transitions, 557 flow [2024-06-27 19:18:47,376 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=474, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=557, PETRI_PLACES=85, PETRI_TRANSITIONS=69} [2024-06-27 19:18:47,376 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 54 predicate places. [2024-06-27 19:18:47,376 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 69 transitions, 557 flow [2024-06-27 19:18:47,377 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) [2024-06-27 19:18:47,377 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:47,377 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:47,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 19:18:47,377 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)] === [2024-06-27 19:18:47,377 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:47,378 INFO L85 PathProgramCache]: Analyzing trace with hash -969421590, now seen corresponding path program 1 times [2024-06-27 19:18:47,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:47,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037793330] [2024-06-27 19:18:47,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:47,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:51,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:51,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:51,623 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037793330] [2024-06-27 19:18:51,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037793330] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:51,623 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:51,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:51,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [945271544] [2024-06-27 19:18:51,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:51,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:51,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:51,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:51,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:51,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:51,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 69 transitions, 557 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) [2024-06-27 19:18:51,735 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:51,735 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:51,735 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:51,992 INFO L124 PetriNetUnfolderBase]: 274/486 cut-off events. [2024-06-27 19:18:51,992 INFO L125 PetriNetUnfolderBase]: For 9657/9657 co-relation queries the response was YES. [2024-06-27 19:18:51,994 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2676 conditions, 486 events. 274/486 cut-off events. For 9657/9657 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1798 event pairs, 81 based on Foata normal form. 1/486 useless extension candidates. Maximal degree in co-relation 2635. Up to 463 conditions per place. [2024-06-27 19:18:51,996 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 64 selfloop transitions, 14 changer transitions 0/80 dead transitions. [2024-06-27 19:18:51,996 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 80 transitions, 747 flow [2024-06-27 19:18:51,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:18:51,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:18:51,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 88 transitions. [2024-06-27 19:18:51,997 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3055555555555556 [2024-06-27 19:18:51,997 INFO L175 Difference]: Start difference. First operand has 85 places, 69 transitions, 557 flow. Second operand 9 states and 88 transitions. [2024-06-27 19:18:51,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 80 transitions, 747 flow [2024-06-27 19:18:52,003 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 87 places, 80 transitions, 684 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:52,005 INFO L231 Difference]: Finished difference. Result has 88 places, 71 transitions, 545 flow [2024-06-27 19:18:52,005 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=494, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=545, PETRI_PLACES=88, PETRI_TRANSITIONS=71} [2024-06-27 19:18:52,006 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2024-06-27 19:18:52,006 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 71 transitions, 545 flow [2024-06-27 19:18:52,006 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) [2024-06-27 19:18:52,006 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:52,007 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:52,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 19:18:52,007 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)] === [2024-06-27 19:18:52,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:52,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1426617167, now seen corresponding path program 1 times [2024-06-27 19:18:52,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:52,008 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174545033] [2024-06-27 19:18:52,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:52,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:52,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:53,734 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:53,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:53,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174545033] [2024-06-27 19:18:53,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174545033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:53,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:53,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 19:18:53,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248011483] [2024-06-27 19:18:53,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:53,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 19:18:53,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:53,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 19:18:53,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 19:18:53,818 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:53,818 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 71 transitions, 545 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) [2024-06-27 19:18:53,818 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:53,818 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:53,818 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:54,282 INFO L124 PetriNetUnfolderBase]: 280/496 cut-off events. [2024-06-27 19:18:54,282 INFO L125 PetriNetUnfolderBase]: For 10503/10503 co-relation queries the response was YES. [2024-06-27 19:18:54,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2730 conditions, 496 events. 280/496 cut-off events. For 10503/10503 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1846 event pairs, 60 based on Foata normal form. 2/497 useless extension candidates. Maximal degree in co-relation 2688. Up to 436 conditions per place. [2024-06-27 19:18:54,287 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 75 selfloop transitions, 13 changer transitions 0/90 dead transitions. [2024-06-27 19:18:54,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 90 transitions, 779 flow [2024-06-27 19:18:54,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:54,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:54,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-27 19:18:54,289 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-27 19:18:54,289 INFO L175 Difference]: Start difference. First operand has 88 places, 71 transitions, 545 flow. Second operand 8 states and 90 transitions. [2024-06-27 19:18:54,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 90 transitions, 779 flow [2024-06-27 19:18:54,298 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 90 transitions, 744 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 19:18:54,300 INFO L231 Difference]: Finished difference. Result has 89 places, 73 transitions, 563 flow [2024-06-27 19:18:54,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=510, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=563, PETRI_PLACES=89, PETRI_TRANSITIONS=73} [2024-06-27 19:18:54,300 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-06-27 19:18:54,301 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 73 transitions, 563 flow [2024-06-27 19:18:54,301 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) [2024-06-27 19:18:54,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:54,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:54,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 19:18:54,301 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)] === [2024-06-27 19:18:54,302 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:54,302 INFO L85 PathProgramCache]: Analyzing trace with hash 77977682, now seen corresponding path program 1 times [2024-06-27 19:18:54,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:54,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280684078] [2024-06-27 19:18:54,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:54,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:54,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:56,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:56,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:56,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280684078] [2024-06-27 19:18:56,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280684078] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:56,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:56,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:56,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1521102323] [2024-06-27 19:18:56,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:56,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:56,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:56,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:56,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:56,123 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:56,123 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 73 transitions, 563 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) [2024-06-27 19:18:56,124 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:56,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:56,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:56,527 INFO L124 PetriNetUnfolderBase]: 278/493 cut-off events. [2024-06-27 19:18:56,527 INFO L125 PetriNetUnfolderBase]: For 10835/10835 co-relation queries the response was YES. [2024-06-27 19:18:56,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2764 conditions, 493 events. 278/493 cut-off events. For 10835/10835 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1835 event pairs, 74 based on Foata normal form. 1/493 useless extension candidates. Maximal degree in co-relation 2721. Up to 436 conditions per place. [2024-06-27 19:18:56,537 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 66 selfloop transitions, 19 changer transitions 0/87 dead transitions. [2024-06-27 19:18:56,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 87 transitions, 771 flow [2024-06-27 19:18:56,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:56,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:56,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-27 19:18:56,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-27 19:18:56,540 INFO L175 Difference]: Start difference. First operand has 89 places, 73 transitions, 563 flow. Second operand 8 states and 87 transitions. [2024-06-27 19:18:56,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 87 transitions, 771 flow [2024-06-27 19:18:56,549 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 87 transitions, 728 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 19:18:56,551 INFO L231 Difference]: Finished difference. Result has 91 places, 73 transitions, 566 flow [2024-06-27 19:18:56,551 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=566, PETRI_PLACES=91, PETRI_TRANSITIONS=73} [2024-06-27 19:18:56,552 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 60 predicate places. [2024-06-27 19:18:56,552 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 73 transitions, 566 flow [2024-06-27 19:18:56,552 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) [2024-06-27 19:18:56,553 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:56,553 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:56,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 19:18:56,553 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)] === [2024-06-27 19:18:56,553 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:56,554 INFO L85 PathProgramCache]: Analyzing trace with hash 77977465, now seen corresponding path program 2 times [2024-06-27 19:18:56,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:56,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4380286] [2024-06-27 19:18:56,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:56,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:56,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:18:58,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:18:58,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:18:58,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4380286] [2024-06-27 19:18:58,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4380286] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:18:58,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:18:58,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:18:58,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237899611] [2024-06-27 19:18:58,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:18:58,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:18:58,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:18:58,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:18:58,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:18:58,418 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:18:58,419 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 73 transitions, 566 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) [2024-06-27 19:18:58,419 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:18:58,419 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:18:58,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:18:58,908 INFO L124 PetriNetUnfolderBase]: 294/519 cut-off events. [2024-06-27 19:18:58,908 INFO L125 PetriNetUnfolderBase]: For 12762/12762 co-relation queries the response was YES. [2024-06-27 19:18:58,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2965 conditions, 519 events. 294/519 cut-off events. For 12762/12762 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1949 event pairs, 55 based on Foata normal form. 2/520 useless extension candidates. Maximal degree in co-relation 2921. Up to 412 conditions per place. [2024-06-27 19:18:58,914 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 69 selfloop transitions, 24 changer transitions 0/95 dead transitions. [2024-06-27 19:18:58,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 95 transitions, 890 flow [2024-06-27 19:18:58,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:18:58,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:18:58,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-27 19:18:58,915 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-27 19:18:58,915 INFO L175 Difference]: Start difference. First operand has 91 places, 73 transitions, 566 flow. Second operand 8 states and 94 transitions. [2024-06-27 19:18:58,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 95 transitions, 890 flow [2024-06-27 19:18:58,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 95 transitions, 833 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 19:18:58,931 INFO L231 Difference]: Finished difference. Result has 92 places, 77 transitions, 611 flow [2024-06-27 19:18:58,931 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=509, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=611, PETRI_PLACES=92, PETRI_TRANSITIONS=77} [2024-06-27 19:18:58,932 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-27 19:18:58,932 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 77 transitions, 611 flow [2024-06-27 19:18:58,932 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) [2024-06-27 19:18:58,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:18:58,932 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:18:58,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 19:18:58,933 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)] === [2024-06-27 19:18:58,933 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:18:58,933 INFO L85 PathProgramCache]: Analyzing trace with hash 77971885, now seen corresponding path program 3 times [2024-06-27 19:18:58,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:18:58,933 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616719510] [2024-06-27 19:18:58,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:18:58,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:18:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:00,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:00,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:00,618 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616719510] [2024-06-27 19:19:00,618 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616719510] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:00,618 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:00,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:00,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785524246] [2024-06-27 19:19:00,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:00,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:00,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:00,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:00,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:00,738 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:00,738 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 77 transitions, 611 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) [2024-06-27 19:19:00,738 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:00,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:00,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:01,214 INFO L124 PetriNetUnfolderBase]: 290/513 cut-off events. [2024-06-27 19:19:01,214 INFO L125 PetriNetUnfolderBase]: For 13305/13305 co-relation queries the response was YES. [2024-06-27 19:19:01,215 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2963 conditions, 513 events. 290/513 cut-off events. For 13305/13305 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1917 event pairs, 55 based on Foata normal form. 2/514 useless extension candidates. Maximal degree in co-relation 2918. Up to 436 conditions per place. [2024-06-27 19:19:01,217 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 73 selfloop transitions, 18 changer transitions 0/93 dead transitions. [2024-06-27 19:19:01,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 93 transitions, 831 flow [2024-06-27 19:19:01,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:19:01,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:19:01,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-27 19:19:01,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-27 19:19:01,219 INFO L175 Difference]: Start difference. First operand has 92 places, 77 transitions, 611 flow. Second operand 8 states and 91 transitions. [2024-06-27 19:19:01,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 93 transitions, 831 flow [2024-06-27 19:19:01,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 93 transitions, 784 flow, removed 14 selfloop flow, removed 4 redundant places. [2024-06-27 19:19:01,232 INFO L231 Difference]: Finished difference. Result has 96 places, 77 transitions, 605 flow [2024-06-27 19:19:01,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=605, PETRI_PLACES=96, PETRI_TRANSITIONS=77} [2024-06-27 19:19:01,233 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-27 19:19:01,233 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 77 transitions, 605 flow [2024-06-27 19:19:01,233 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) [2024-06-27 19:19:01,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:01,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:01,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 19:19:01,234 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)] === [2024-06-27 19:19:01,234 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:01,234 INFO L85 PathProgramCache]: Analyzing trace with hash -1278792241, now seen corresponding path program 1 times [2024-06-27 19:19:01,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:01,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853816797] [2024-06-27 19:19:01,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:01,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:01,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:03,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:03,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:03,050 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853816797] [2024-06-27 19:19:03,050 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853816797] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:03,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:03,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:03,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946154637] [2024-06-27 19:19:03,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:03,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:03,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:03,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:03,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:03,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:03,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 77 transitions, 605 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) [2024-06-27 19:19:03,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:03,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:03,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:03,554 INFO L124 PetriNetUnfolderBase]: 296/524 cut-off events. [2024-06-27 19:19:03,554 INFO L125 PetriNetUnfolderBase]: For 14146/14149 co-relation queries the response was YES. [2024-06-27 19:19:03,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3047 conditions, 524 events. 296/524 cut-off events. For 14146/14149 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1979 event pairs, 79 based on Foata normal form. 4/526 useless extension candidates. Maximal degree in co-relation 3000. Up to 467 conditions per place. [2024-06-27 19:19:03,557 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 77 selfloop transitions, 16 changer transitions 0/95 dead transitions. [2024-06-27 19:19:03,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 95 transitions, 857 flow [2024-06-27 19:19:03,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:03,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:03,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 19:19:03,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 19:19:03,559 INFO L175 Difference]: Start difference. First operand has 96 places, 77 transitions, 605 flow. Second operand 9 states and 96 transitions. [2024-06-27 19:19:03,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 95 transitions, 857 flow [2024-06-27 19:19:03,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 95 transitions, 804 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:03,570 INFO L231 Difference]: Finished difference. Result has 98 places, 79 transitions, 615 flow [2024-06-27 19:19:03,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=77, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=615, PETRI_PLACES=98, PETRI_TRANSITIONS=79} [2024-06-27 19:19:03,571 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-06-27 19:19:03,571 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 79 transitions, 615 flow [2024-06-27 19:19:03,571 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) [2024-06-27 19:19:03,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:03,572 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:03,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 19:19:03,572 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)] === [2024-06-27 19:19:03,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:03,572 INFO L85 PathProgramCache]: Analyzing trace with hash -253541763, now seen corresponding path program 4 times [2024-06-27 19:19:03,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:03,573 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305347555] [2024-06-27 19:19:03,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:03,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:03,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:05,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:05,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:05,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305347555] [2024-06-27 19:19:05,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305347555] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:05,442 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:05,442 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:05,442 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469715861] [2024-06-27 19:19:05,442 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:05,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:05,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:05,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:05,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:05,546 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:05,546 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 79 transitions, 615 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) [2024-06-27 19:19:05,546 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:05,546 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:05,547 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:06,061 INFO L124 PetriNetUnfolderBase]: 312/551 cut-off events. [2024-06-27 19:19:06,061 INFO L125 PetriNetUnfolderBase]: For 16045/16048 co-relation queries the response was YES. [2024-06-27 19:19:06,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3282 conditions, 551 events. 312/551 cut-off events. For 16045/16048 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2099 event pairs, 66 based on Foata normal form. 2/550 useless extension candidates. Maximal degree in co-relation 3234. Up to 440 conditions per place. [2024-06-27 19:19:06,065 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 74 selfloop transitions, 24 changer transitions 0/100 dead transitions. [2024-06-27 19:19:06,065 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 100 transitions, 961 flow [2024-06-27 19:19:06,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:19:06,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:19:06,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 96 transitions. [2024-06-27 19:19:06,066 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 19:19:06,066 INFO L175 Difference]: Start difference. First operand has 98 places, 79 transitions, 615 flow. Second operand 8 states and 96 transitions. [2024-06-27 19:19:06,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 100 transitions, 961 flow [2024-06-27 19:19:06,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 100 transitions, 914 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:06,079 INFO L231 Difference]: Finished difference. Result has 99 places, 83 transitions, 677 flow [2024-06-27 19:19:06,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=568, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=677, PETRI_PLACES=99, PETRI_TRANSITIONS=83} [2024-06-27 19:19:06,080 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 68 predicate places. [2024-06-27 19:19:06,080 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 83 transitions, 677 flow [2024-06-27 19:19:06,080 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) [2024-06-27 19:19:06,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:06,080 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:06,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 19:19:06,081 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)] === [2024-06-27 19:19:06,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:06,081 INFO L85 PathProgramCache]: Analyzing trace with hash -253547343, now seen corresponding path program 5 times [2024-06-27 19:19:06,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:06,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482792266] [2024-06-27 19:19:06,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:06,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:06,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:07,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:07,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:07,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482792266] [2024-06-27 19:19:07,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482792266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:07,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:07,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:07,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128605979] [2024-06-27 19:19:07,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:07,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:07,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:07,740 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:07,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:07,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:07,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 83 transitions, 677 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) [2024-06-27 19:19:07,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:07,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:07,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:08,286 INFO L124 PetriNetUnfolderBase]: 308/545 cut-off events. [2024-06-27 19:19:08,287 INFO L125 PetriNetUnfolderBase]: For 16454/16457 co-relation queries the response was YES. [2024-06-27 19:19:08,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3275 conditions, 545 events. 308/545 cut-off events. For 16454/16457 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2086 event pairs, 66 based on Foata normal form. 2/544 useless extension candidates. Maximal degree in co-relation 3226. Up to 451 conditions per place. [2024-06-27 19:19:08,290 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 74 selfloop transitions, 21 changer transitions 0/97 dead transitions. [2024-06-27 19:19:08,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 97 transitions, 901 flow [2024-06-27 19:19:08,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:19:08,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:19:08,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 91 transitions. [2024-06-27 19:19:08,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35546875 [2024-06-27 19:19:08,291 INFO L175 Difference]: Start difference. First operand has 99 places, 83 transitions, 677 flow. Second operand 8 states and 91 transitions. [2024-06-27 19:19:08,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 97 transitions, 901 flow [2024-06-27 19:19:08,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 97 transitions, 835 flow, removed 21 selfloop flow, removed 4 redundant places. [2024-06-27 19:19:08,305 INFO L231 Difference]: Finished difference. Result has 103 places, 83 transitions, 658 flow [2024-06-27 19:19:08,305 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=658, PETRI_PLACES=103, PETRI_TRANSITIONS=83} [2024-06-27 19:19:08,305 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 72 predicate places. [2024-06-27 19:19:08,305 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 83 transitions, 658 flow [2024-06-27 19:19:08,306 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) [2024-06-27 19:19:08,306 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:08,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:08,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 19:19:08,306 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)] === [2024-06-27 19:19:08,306 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:08,306 INFO L85 PathProgramCache]: Analyzing trace with hash 1281715645, now seen corresponding path program 2 times [2024-06-27 19:19:08,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:08,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1952895204] [2024-06-27 19:19:08,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:08,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:08,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:10,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:10,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:10,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1952895204] [2024-06-27 19:19:10,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1952895204] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:10,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:10,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:10,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618601857] [2024-06-27 19:19:10,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:10,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:10,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:10,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:10,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:10,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:10,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 83 transitions, 658 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) [2024-06-27 19:19:10,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:10,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:10,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:10,613 INFO L124 PetriNetUnfolderBase]: 314/553 cut-off events. [2024-06-27 19:19:10,614 INFO L125 PetriNetUnfolderBase]: For 17464/17464 co-relation queries the response was YES. [2024-06-27 19:19:10,616 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3348 conditions, 553 events. 314/553 cut-off events. For 17464/17464 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2108 event pairs, 83 based on Foata normal form. 2/554 useless extension candidates. Maximal degree in co-relation 3297. Up to 527 conditions per place. [2024-06-27 19:19:10,618 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 79 selfloop transitions, 14 changer transitions 0/95 dead transitions. [2024-06-27 19:19:10,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 95 transitions, 894 flow [2024-06-27 19:19:10,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:10,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:10,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 89 transitions. [2024-06-27 19:19:10,620 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3090277777777778 [2024-06-27 19:19:10,620 INFO L175 Difference]: Start difference. First operand has 103 places, 83 transitions, 658 flow. Second operand 9 states and 89 transitions. [2024-06-27 19:19:10,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 95 transitions, 894 flow [2024-06-27 19:19:10,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 95 transitions, 847 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:10,641 INFO L231 Difference]: Finished difference. Result has 105 places, 85 transitions, 674 flow [2024-06-27 19:19:10,641 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=611, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=674, PETRI_PLACES=105, PETRI_TRANSITIONS=85} [2024-06-27 19:19:10,642 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 74 predicate places. [2024-06-27 19:19:10,642 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 85 transitions, 674 flow [2024-06-27 19:19:10,642 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) [2024-06-27 19:19:10,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:10,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:10,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 19:19:10,643 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)] === [2024-06-27 19:19:10,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:10,643 INFO L85 PathProgramCache]: Analyzing trace with hash 12365263, now seen corresponding path program 3 times [2024-06-27 19:19:10,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:10,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152562954] [2024-06-27 19:19:10,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:10,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:10,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:12,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:12,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:12,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152562954] [2024-06-27 19:19:12,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152562954] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:12,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:12,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:12,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197073944] [2024-06-27 19:19:12,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:12,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:12,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:12,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:12,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:12,695 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:12,695 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 85 transitions, 674 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) [2024-06-27 19:19:12,695 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:12,695 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:12,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:13,059 INFO L124 PetriNetUnfolderBase]: 320/565 cut-off events. [2024-06-27 19:19:13,059 INFO L125 PetriNetUnfolderBase]: For 18588/18591 co-relation queries the response was YES. [2024-06-27 19:19:13,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3443 conditions, 565 events. 320/565 cut-off events. For 18588/18591 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2169 event pairs, 79 based on Foata normal form. 4/566 useless extension candidates. Maximal degree in co-relation 3391. Up to 447 conditions per place. [2024-06-27 19:19:13,063 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 63 selfloop transitions, 36 changer transitions 0/101 dead transitions. [2024-06-27 19:19:13,063 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 101 transitions, 942 flow [2024-06-27 19:19:13,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:13,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:13,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 19:19:13,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-27 19:19:13,074 INFO L175 Difference]: Start difference. First operand has 105 places, 85 transitions, 674 flow. Second operand 9 states and 98 transitions. [2024-06-27 19:19:13,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 101 transitions, 942 flow [2024-06-27 19:19:13,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 101 transitions, 895 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:13,097 INFO L231 Difference]: Finished difference. Result has 107 places, 87 transitions, 738 flow [2024-06-27 19:19:13,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=627, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=738, PETRI_PLACES=107, PETRI_TRANSITIONS=87} [2024-06-27 19:19:13,099 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 76 predicate places. [2024-06-27 19:19:13,099 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 87 transitions, 738 flow [2024-06-27 19:19:13,099 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) [2024-06-27 19:19:13,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:13,099 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:13,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 19:19:13,100 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)] === [2024-06-27 19:19:13,100 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:13,100 INFO L85 PathProgramCache]: Analyzing trace with hash 1274297035, now seen corresponding path program 4 times [2024-06-27 19:19:13,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:13,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604198266] [2024-06-27 19:19:13,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:13,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:13,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:14,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:14,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:14,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604198266] [2024-06-27 19:19:14,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604198266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:14,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:14,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:14,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171573345] [2024-06-27 19:19:14,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:14,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:14,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:14,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:14,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:15,004 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:15,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 87 transitions, 738 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) [2024-06-27 19:19:15,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:15,005 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:15,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:15,388 INFO L124 PetriNetUnfolderBase]: 326/575 cut-off events. [2024-06-27 19:19:15,388 INFO L125 PetriNetUnfolderBase]: For 19773/19776 co-relation queries the response was YES. [2024-06-27 19:19:15,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3614 conditions, 575 events. 326/575 cut-off events. For 19773/19776 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2245 event pairs, 83 based on Foata normal form. 4/576 useless extension candidates. Maximal degree in co-relation 3561. Up to 505 conditions per place. [2024-06-27 19:19:15,392 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 81 selfloop transitions, 20 changer transitions 0/103 dead transitions. [2024-06-27 19:19:15,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 103 transitions, 1014 flow [2024-06-27 19:19:15,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:15,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:15,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 19:19:15,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 19:19:15,401 INFO L175 Difference]: Start difference. First operand has 107 places, 87 transitions, 738 flow. Second operand 9 states and 96 transitions. [2024-06-27 19:19:15,402 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 103 transitions, 1014 flow [2024-06-27 19:19:15,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 103 transitions, 919 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:15,427 INFO L231 Difference]: Finished difference. Result has 109 places, 89 transitions, 726 flow [2024-06-27 19:19:15,427 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=643, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=726, PETRI_PLACES=109, PETRI_TRANSITIONS=89} [2024-06-27 19:19:15,427 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-27 19:19:15,428 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 89 transitions, 726 flow [2024-06-27 19:19:15,428 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) [2024-06-27 19:19:15,428 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:15,428 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:15,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 19:19:15,429 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)] === [2024-06-27 19:19:15,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:15,430 INFO L85 PathProgramCache]: Analyzing trace with hash 3160557, now seen corresponding path program 6 times [2024-06-27 19:19:15,430 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:15,430 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626912564] [2024-06-27 19:19:15,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:15,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:15,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:17,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:17,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:17,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626912564] [2024-06-27 19:19:17,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626912564] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:17,431 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:17,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:17,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33004092] [2024-06-27 19:19:17,431 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:17,431 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:17,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:17,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:17,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:17,512 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:17,512 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 89 transitions, 726 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) [2024-06-27 19:19:17,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:17,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:17,513 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:17,970 INFO L124 PetriNetUnfolderBase]: 322/569 cut-off events. [2024-06-27 19:19:17,970 INFO L125 PetriNetUnfolderBase]: For 19767/19770 co-relation queries the response was YES. [2024-06-27 19:19:17,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3520 conditions, 569 events. 322/569 cut-off events. For 19767/19770 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2223 event pairs, 65 based on Foata normal form. 2/568 useless extension candidates. Maximal degree in co-relation 3466. Up to 411 conditions per place. [2024-06-27 19:19:17,975 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 68 selfloop transitions, 36 changer transitions 0/106 dead transitions. [2024-06-27 19:19:17,975 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 106 transitions, 1002 flow [2024-06-27 19:19:17,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:19:17,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:19:17,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 94 transitions. [2024-06-27 19:19:17,976 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-27 19:19:17,976 INFO L175 Difference]: Start difference. First operand has 109 places, 89 transitions, 726 flow. Second operand 8 states and 94 transitions. [2024-06-27 19:19:17,976 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 106 transitions, 1002 flow [2024-06-27 19:19:17,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 106 transitions, 935 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:17,992 INFO L231 Difference]: Finished difference. Result has 110 places, 91 transitions, 770 flow [2024-06-27 19:19:17,992 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=659, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=770, PETRI_PLACES=110, PETRI_TRANSITIONS=91} [2024-06-27 19:19:17,993 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2024-06-27 19:19:17,993 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 91 transitions, 770 flow [2024-06-27 19:19:17,993 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) [2024-06-27 19:19:17,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:17,993 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:17,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 19:19:17,993 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)] === [2024-06-27 19:19:17,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:17,994 INFO L85 PathProgramCache]: Analyzing trace with hash 3168493, now seen corresponding path program 5 times [2024-06-27 19:19:17,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:17,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432122118] [2024-06-27 19:19:17,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:17,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:18,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:19,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:19,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:19,854 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432122118] [2024-06-27 19:19:19,854 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432122118] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:19,854 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:19,854 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:19,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569124259] [2024-06-27 19:19:19,855 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:19,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:19,855 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:19,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:19,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:19,936 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:19,936 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 91 transitions, 770 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) [2024-06-27 19:19:19,937 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:19,937 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:19,937 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:20,269 INFO L124 PetriNetUnfolderBase]: 323/571 cut-off events. [2024-06-27 19:19:20,270 INFO L125 PetriNetUnfolderBase]: For 20481/20484 co-relation queries the response was YES. [2024-06-27 19:19:20,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3598 conditions, 571 events. 323/571 cut-off events. For 20481/20484 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2239 event pairs, 80 based on Foata normal form. 4/572 useless extension candidates. Maximal degree in co-relation 3543. Up to 481 conditions per place. [2024-06-27 19:19:20,273 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 78 selfloop transitions, 27 changer transitions 0/107 dead transitions. [2024-06-27 19:19:20,273 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 107 transitions, 1058 flow [2024-06-27 19:19:20,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:20,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:20,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 19:19:20,281 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-27 19:19:20,281 INFO L175 Difference]: Start difference. First operand has 110 places, 91 transitions, 770 flow. Second operand 9 states and 97 transitions. [2024-06-27 19:19:20,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 107 transitions, 1058 flow [2024-06-27 19:19:20,306 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 107 transitions, 963 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-06-27 19:19:20,308 INFO L231 Difference]: Finished difference. Result has 113 places, 93 transitions, 776 flow [2024-06-27 19:19:20,308 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=776, PETRI_PLACES=113, PETRI_TRANSITIONS=93} [2024-06-27 19:19:20,309 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 82 predicate places. [2024-06-27 19:19:20,309 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 93 transitions, 776 flow [2024-06-27 19:19:20,309 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) [2024-06-27 19:19:20,309 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:20,309 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:20,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 19:19:20,310 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)] === [2024-06-27 19:19:20,310 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:20,310 INFO L85 PathProgramCache]: Analyzing trace with hash 12703597, now seen corresponding path program 1 times [2024-06-27 19:19:20,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:20,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683330302] [2024-06-27 19:19:20,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:20,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:20,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:22,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:22,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:22,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683330302] [2024-06-27 19:19:22,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683330302] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:22,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:22,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:22,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [245580771] [2024-06-27 19:19:22,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:22,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:22,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:22,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:22,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:23,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:23,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 93 transitions, 776 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) [2024-06-27 19:19:23,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:23,033 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:23,033 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:23,522 INFO L124 PetriNetUnfolderBase]: 320/564 cut-off events. [2024-06-27 19:19:23,522 INFO L125 PetriNetUnfolderBase]: For 20362/20362 co-relation queries the response was YES. [2024-06-27 19:19:23,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3501 conditions, 564 events. 320/564 cut-off events. For 20362/20362 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2190 event pairs, 87 based on Foata normal form. 2/565 useless extension candidates. Maximal degree in co-relation 3445. Up to 535 conditions per place. [2024-06-27 19:19:23,526 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 87 selfloop transitions, 15 changer transitions 0/104 dead transitions. [2024-06-27 19:19:23,526 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 122 places, 104 transitions, 1004 flow [2024-06-27 19:19:23,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:23,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:23,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 95 transitions. [2024-06-27 19:19:23,527 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.296875 [2024-06-27 19:19:23,527 INFO L175 Difference]: Start difference. First operand has 113 places, 93 transitions, 776 flow. Second operand 10 states and 95 transitions. [2024-06-27 19:19:23,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 122 places, 104 transitions, 1004 flow [2024-06-27 19:19:23,542 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 104 transitions, 919 flow, removed 17 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:23,544 INFO L231 Difference]: Finished difference. Result has 116 places, 93 transitions, 725 flow [2024-06-27 19:19:23,544 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=691, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=725, PETRI_PLACES=116, PETRI_TRANSITIONS=93} [2024-06-27 19:19:23,544 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-06-27 19:19:23,545 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 93 transitions, 725 flow [2024-06-27 19:19:23,545 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) [2024-06-27 19:19:23,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:23,545 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:23,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 19:19:23,545 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)] === [2024-06-27 19:19:23,545 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:23,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1995990229, now seen corresponding path program 1 times [2024-06-27 19:19:23,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:23,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305604979] [2024-06-27 19:19:23,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:23,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:25,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:25,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:25,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305604979] [2024-06-27 19:19:25,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305604979] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:25,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:25,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:25,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309075683] [2024-06-27 19:19:25,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:25,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:25,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:25,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:25,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:25,582 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:25,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 93 transitions, 725 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) [2024-06-27 19:19:25,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:25,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:25,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:26,088 INFO L124 PetriNetUnfolderBase]: 324/572 cut-off events. [2024-06-27 19:19:26,088 INFO L125 PetriNetUnfolderBase]: For 21197/21197 co-relation queries the response was YES. [2024-06-27 19:19:26,090 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3501 conditions, 572 events. 324/572 cut-off events. For 21197/21197 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2244 event pairs, 46 based on Foata normal form. 2/573 useless extension candidates. Maximal degree in co-relation 3444. Up to 502 conditions per place. [2024-06-27 19:19:26,093 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 98 selfloop transitions, 11 changer transitions 0/111 dead transitions. [2024-06-27 19:19:26,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 111 transitions, 997 flow [2024-06-27 19:19:26,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:19:26,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:19:26,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 87 transitions. [2024-06-27 19:19:26,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33984375 [2024-06-27 19:19:26,095 INFO L175 Difference]: Start difference. First operand has 116 places, 93 transitions, 725 flow. Second operand 8 states and 87 transitions. [2024-06-27 19:19:26,095 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 111 transitions, 997 flow [2024-06-27 19:19:26,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 111 transitions, 957 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:26,121 INFO L231 Difference]: Finished difference. Result has 116 places, 94 transitions, 727 flow [2024-06-27 19:19:26,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=93, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=727, PETRI_PLACES=116, PETRI_TRANSITIONS=94} [2024-06-27 19:19:26,122 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-06-27 19:19:26,122 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 94 transitions, 727 flow [2024-06-27 19:19:26,122 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) [2024-06-27 19:19:26,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:26,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:26,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 19:19:26,123 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)] === [2024-06-27 19:19:26,123 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:26,123 INFO L85 PathProgramCache]: Analyzing trace with hash -1993248589, now seen corresponding path program 2 times [2024-06-27 19:19:26,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:26,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1518588760] [2024-06-27 19:19:26,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:26,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:28,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:28,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:28,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1518588760] [2024-06-27 19:19:28,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1518588760] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:28,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:28,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:28,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959002679] [2024-06-27 19:19:28,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:28,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:28,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:28,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:28,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:28,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:28,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 94 transitions, 727 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) [2024-06-27 19:19:28,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:28,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:28,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:28,874 INFO L124 PetriNetUnfolderBase]: 328/580 cut-off events. [2024-06-27 19:19:28,874 INFO L125 PetriNetUnfolderBase]: For 22401/22401 co-relation queries the response was YES. [2024-06-27 19:19:28,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3567 conditions, 580 events. 328/580 cut-off events. For 22401/22401 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2304 event pairs, 66 based on Foata normal form. 2/581 useless extension candidates. Maximal degree in co-relation 3509. Up to 522 conditions per place. [2024-06-27 19:19:28,877 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 98 selfloop transitions, 12 changer transitions 0/112 dead transitions. [2024-06-27 19:19:28,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 112 transitions, 1003 flow [2024-06-27 19:19:28,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:19:28,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:19:28,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 89 transitions. [2024-06-27 19:19:28,880 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34765625 [2024-06-27 19:19:28,880 INFO L175 Difference]: Start difference. First operand has 116 places, 94 transitions, 727 flow. Second operand 8 states and 89 transitions. [2024-06-27 19:19:28,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 112 transitions, 1003 flow [2024-06-27 19:19:28,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 112 transitions, 971 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 19:19:28,901 INFO L231 Difference]: Finished difference. Result has 118 places, 95 transitions, 741 flow [2024-06-27 19:19:28,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=695, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=741, PETRI_PLACES=118, PETRI_TRANSITIONS=95} [2024-06-27 19:19:28,902 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 87 predicate places. [2024-06-27 19:19:28,902 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 95 transitions, 741 flow [2024-06-27 19:19:28,902 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) [2024-06-27 19:19:28,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:28,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:28,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 19:19:28,903 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)] === [2024-06-27 19:19:28,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:28,903 INFO L85 PathProgramCache]: Analyzing trace with hash -1993128309, now seen corresponding path program 1 times [2024-06-27 19:19:28,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:28,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800422637] [2024-06-27 19:19:28,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:28,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:31,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:31,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:31,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800422637] [2024-06-27 19:19:31,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800422637] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:31,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:31,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:31,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120908651] [2024-06-27 19:19:31,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:31,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:31,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:31,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:31,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:31,177 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:31,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 95 transitions, 741 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) [2024-06-27 19:19:31,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:31,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:31,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:31,656 INFO L124 PetriNetUnfolderBase]: 334/590 cut-off events. [2024-06-27 19:19:31,656 INFO L125 PetriNetUnfolderBase]: For 23917/23917 co-relation queries the response was YES. [2024-06-27 19:19:31,659 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3643 conditions, 590 events. 334/590 cut-off events. For 23917/23917 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2342 event pairs, 65 based on Foata normal form. 2/591 useless extension candidates. Maximal degree in co-relation 3584. Up to 522 conditions per place. [2024-06-27 19:19:31,661 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 99 selfloop transitions, 15 changer transitions 0/116 dead transitions. [2024-06-27 19:19:31,662 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 116 transitions, 1041 flow [2024-06-27 19:19:31,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:31,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:31,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 19:19:31,663 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:19:31,663 INFO L175 Difference]: Start difference. First operand has 118 places, 95 transitions, 741 flow. Second operand 9 states and 99 transitions. [2024-06-27 19:19:31,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 116 transitions, 1041 flow [2024-06-27 19:19:31,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 116 transitions, 1005 flow, removed 7 selfloop flow, removed 6 redundant places. [2024-06-27 19:19:31,696 INFO L231 Difference]: Finished difference. Result has 121 places, 97 transitions, 772 flow [2024-06-27 19:19:31,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=705, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=772, PETRI_PLACES=121, PETRI_TRANSITIONS=97} [2024-06-27 19:19:31,697 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-06-27 19:19:31,697 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 97 transitions, 772 flow [2024-06-27 19:19:31,697 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) [2024-06-27 19:19:31,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:31,698 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:31,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 19:19:31,698 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)] === [2024-06-27 19:19:31,698 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:31,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1160581481, now seen corresponding path program 2 times [2024-06-27 19:19:31,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:31,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732679316] [2024-06-27 19:19:31,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:31,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:31,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:33,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:33,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:33,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732679316] [2024-06-27 19:19:33,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732679316] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:33,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:33,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:33,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901676838] [2024-06-27 19:19:33,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:33,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:33,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:33,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:33,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:33,840 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:33,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 97 transitions, 772 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) [2024-06-27 19:19:33,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:33,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:33,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:34,444 INFO L124 PetriNetUnfolderBase]: 350/616 cut-off events. [2024-06-27 19:19:34,445 INFO L125 PetriNetUnfolderBase]: For 26736/26736 co-relation queries the response was YES. [2024-06-27 19:19:34,447 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3915 conditions, 616 events. 350/616 cut-off events. For 26736/26736 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2461 event pairs, 57 based on Foata normal form. 2/617 useless extension candidates. Maximal degree in co-relation 3855. Up to 470 conditions per place. [2024-06-27 19:19:34,449 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 88 selfloop transitions, 32 changer transitions 0/122 dead transitions. [2024-06-27 19:19:34,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 129 places, 122 transitions, 1206 flow [2024-06-27 19:19:34,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:34,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:34,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-06-27 19:19:34,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-27 19:19:34,451 INFO L175 Difference]: Start difference. First operand has 121 places, 97 transitions, 772 flow. Second operand 9 states and 105 transitions. [2024-06-27 19:19:34,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 129 places, 122 transitions, 1206 flow [2024-06-27 19:19:34,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 122 transitions, 1155 flow, removed 12 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:34,490 INFO L231 Difference]: Finished difference. Result has 123 places, 101 transitions, 859 flow [2024-06-27 19:19:34,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=721, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=859, PETRI_PLACES=123, PETRI_TRANSITIONS=101} [2024-06-27 19:19:34,492 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-27 19:19:34,492 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 101 transitions, 859 flow [2024-06-27 19:19:34,492 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) [2024-06-27 19:19:34,492 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:34,492 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:34,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 19:19:34,493 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)] === [2024-06-27 19:19:34,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:34,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1160581233, now seen corresponding path program 1 times [2024-06-27 19:19:34,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:34,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788280266] [2024-06-27 19:19:34,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:34,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:34,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:36,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:36,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:36,427 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788280266] [2024-06-27 19:19:36,427 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788280266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:36,427 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:36,427 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:36,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133622108] [2024-06-27 19:19:36,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:36,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:36,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:36,428 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:36,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:36,552 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:36,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 101 transitions, 859 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) [2024-06-27 19:19:36,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:36,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:36,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:36,942 INFO L124 PetriNetUnfolderBase]: 348/613 cut-off events. [2024-06-27 19:19:36,942 INFO L125 PetriNetUnfolderBase]: For 26868/26868 co-relation queries the response was YES. [2024-06-27 19:19:36,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3939 conditions, 613 events. 348/613 cut-off events. For 26868/26868 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2459 event pairs, 79 based on Foata normal form. 1/613 useless extension candidates. Maximal degree in co-relation 3878. Up to 545 conditions per place. [2024-06-27 19:19:36,947 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 94 selfloop transitions, 23 changer transitions 0/119 dead transitions. [2024-06-27 19:19:36,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 119 transitions, 1179 flow [2024-06-27 19:19:36,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:36,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:36,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 96 transitions. [2024-06-27 19:19:36,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 19:19:36,949 INFO L175 Difference]: Start difference. First operand has 123 places, 101 transitions, 859 flow. Second operand 9 states and 96 transitions. [2024-06-27 19:19:36,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 119 transitions, 1179 flow [2024-06-27 19:19:36,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 119 transitions, 1116 flow, removed 16 selfloop flow, removed 5 redundant places. [2024-06-27 19:19:36,995 INFO L231 Difference]: Finished difference. Result has 127 places, 103 transitions, 896 flow [2024-06-27 19:19:36,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=796, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=896, PETRI_PLACES=127, PETRI_TRANSITIONS=103} [2024-06-27 19:19:36,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-27 19:19:36,995 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 103 transitions, 896 flow [2024-06-27 19:19:36,996 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) [2024-06-27 19:19:36,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:36,996 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:36,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 19:19:36,996 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)] === [2024-06-27 19:19:36,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:36,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1877842099, now seen corresponding path program 3 times [2024-06-27 19:19:36,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:36,997 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [388729083] [2024-06-27 19:19:36,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:36,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:38,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:38,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:38,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [388729083] [2024-06-27 19:19:38,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [388729083] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:38,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:38,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:38,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602117048] [2024-06-27 19:19:38,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:38,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:38,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:38,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:38,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:39,069 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:39,069 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 103 transitions, 896 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) [2024-06-27 19:19:39,069 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:39,070 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:39,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:39,594 INFO L124 PetriNetUnfolderBase]: 352/621 cut-off events. [2024-06-27 19:19:39,594 INFO L125 PetriNetUnfolderBase]: For 28895/28895 co-relation queries the response was YES. [2024-06-27 19:19:39,596 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4037 conditions, 621 events. 352/621 cut-off events. For 28895/28895 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2508 event pairs, 59 based on Foata normal form. 2/622 useless extension candidates. Maximal degree in co-relation 3974. Up to 546 conditions per place. [2024-06-27 19:19:39,598 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 101 selfloop transitions, 17 changer transitions 0/120 dead transitions. [2024-06-27 19:19:39,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 120 transitions, 1188 flow [2024-06-27 19:19:39,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:19:39,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:19:39,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-27 19:19:39,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-27 19:19:39,599 INFO L175 Difference]: Start difference. First operand has 127 places, 103 transitions, 896 flow. Second operand 8 states and 90 transitions. [2024-06-27 19:19:39,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 120 transitions, 1188 flow [2024-06-27 19:19:39,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 120 transitions, 1108 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:39,631 INFO L231 Difference]: Finished difference. Result has 128 places, 104 transitions, 874 flow [2024-06-27 19:19:39,631 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=816, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=874, PETRI_PLACES=128, PETRI_TRANSITIONS=104} [2024-06-27 19:19:39,632 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 97 predicate places. [2024-06-27 19:19:39,632 INFO L495 AbstractCegarLoop]: Abstraction has has 128 places, 104 transitions, 874 flow [2024-06-27 19:19:39,632 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) [2024-06-27 19:19:39,632 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:39,633 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:39,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 19:19:39,633 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)] === [2024-06-27 19:19:39,633 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:39,633 INFO L85 PathProgramCache]: Analyzing trace with hash -1160587991, now seen corresponding path program 3 times [2024-06-27 19:19:39,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:39,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544250604] [2024-06-27 19:19:39,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:39,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:39,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:41,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:41,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:41,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544250604] [2024-06-27 19:19:41,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544250604] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:41,604 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:41,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:41,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497748221] [2024-06-27 19:19:41,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:41,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:41,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:41,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:41,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:41,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:41,735 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 104 transitions, 874 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) [2024-06-27 19:19:41,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:41,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:41,736 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:42,292 INFO L124 PetriNetUnfolderBase]: 358/631 cut-off events. [2024-06-27 19:19:42,292 INFO L125 PetriNetUnfolderBase]: For 29249/29249 co-relation queries the response was YES. [2024-06-27 19:19:42,294 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4049 conditions, 631 events. 358/631 cut-off events. For 29249/29249 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2556 event pairs, 56 based on Foata normal form. 2/632 useless extension candidates. Maximal degree in co-relation 3985. Up to 519 conditions per place. [2024-06-27 19:19:42,296 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 97 selfloop transitions, 26 changer transitions 0/125 dead transitions. [2024-06-27 19:19:42,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 125 transitions, 1198 flow [2024-06-27 19:19:42,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:42,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:42,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 19:19:42,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-27 19:19:42,297 INFO L175 Difference]: Start difference. First operand has 128 places, 104 transitions, 874 flow. Second operand 9 states and 102 transitions. [2024-06-27 19:19:42,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 125 transitions, 1198 flow [2024-06-27 19:19:42,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 125 transitions, 1150 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 19:19:42,333 INFO L231 Difference]: Finished difference. Result has 131 places, 106 transitions, 919 flow [2024-06-27 19:19:42,333 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=826, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=919, PETRI_PLACES=131, PETRI_TRANSITIONS=106} [2024-06-27 19:19:42,334 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 100 predicate places. [2024-06-27 19:19:42,334 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 106 transitions, 919 flow [2024-06-27 19:19:42,334 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) [2024-06-27 19:19:42,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:42,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:42,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 19:19:42,334 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)] === [2024-06-27 19:19:42,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:42,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1878431785, now seen corresponding path program 4 times [2024-06-27 19:19:42,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:42,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127677197] [2024-06-27 19:19:42,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:42,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:42,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:44,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:44,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:44,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127677197] [2024-06-27 19:19:44,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127677197] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:44,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:44,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:44,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380075826] [2024-06-27 19:19:44,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:44,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:44,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:44,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:44,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:44,499 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:44,499 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 106 transitions, 919 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) [2024-06-27 19:19:44,499 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:44,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:44,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:45,000 INFO L124 PetriNetUnfolderBase]: 354/625 cut-off events. [2024-06-27 19:19:45,000 INFO L125 PetriNetUnfolderBase]: For 28794/28794 co-relation queries the response was YES. [2024-06-27 19:19:45,002 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3974 conditions, 625 events. 354/625 cut-off events. For 28794/28794 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 2536 event pairs, 58 based on Foata normal form. 2/626 useless extension candidates. Maximal degree in co-relation 3909. Up to 540 conditions per place. [2024-06-27 19:19:45,004 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 102 selfloop transitions, 20 changer transitions 0/124 dead transitions. [2024-06-27 19:19:45,004 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 124 transitions, 1205 flow [2024-06-27 19:19:45,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:45,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:45,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 19:19:45,005 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-27 19:19:45,005 INFO L175 Difference]: Start difference. First operand has 131 places, 106 transitions, 919 flow. Second operand 9 states and 100 transitions. [2024-06-27 19:19:45,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 124 transitions, 1205 flow [2024-06-27 19:19:45,036 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 124 transitions, 1116 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:45,038 INFO L231 Difference]: Finished difference. Result has 133 places, 106 transitions, 875 flow [2024-06-27 19:19:45,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=830, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=875, PETRI_PLACES=133, PETRI_TRANSITIONS=106} [2024-06-27 19:19:45,038 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 102 predicate places. [2024-06-27 19:19:45,039 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 106 transitions, 875 flow [2024-06-27 19:19:45,039 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) [2024-06-27 19:19:45,039 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:45,039 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:45,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 19:19:45,039 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)] === [2024-06-27 19:19:45,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:45,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1705522837, now seen corresponding path program 1 times [2024-06-27 19:19:45,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:45,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122052024] [2024-06-27 19:19:45,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:45,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:45,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:47,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:47,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:47,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122052024] [2024-06-27 19:19:47,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122052024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:47,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:47,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:47,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572289433] [2024-06-27 19:19:47,918 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:47,919 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:47,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:47,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:47,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:48,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:48,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 106 transitions, 875 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) [2024-06-27 19:19:48,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:48,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:48,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:48,435 INFO L124 PetriNetUnfolderBase]: 360/636 cut-off events. [2024-06-27 19:19:48,435 INFO L125 PetriNetUnfolderBase]: For 30099/30102 co-relation queries the response was YES. [2024-06-27 19:19:48,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3996 conditions, 636 events. 360/636 cut-off events. For 30099/30102 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2596 event pairs, 83 based on Foata normal form. 4/638 useless extension candidates. Maximal degree in co-relation 3930. Up to 571 conditions per place. [2024-06-27 19:19:48,455 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 106 selfloop transitions, 18 changer transitions 0/126 dead transitions. [2024-06-27 19:19:48,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 126 transitions, 1205 flow [2024-06-27 19:19:48,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:48,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:48,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 19:19:48,457 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-27 19:19:48,457 INFO L175 Difference]: Start difference. First operand has 133 places, 106 transitions, 875 flow. Second operand 10 states and 105 transitions. [2024-06-27 19:19:48,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 126 transitions, 1205 flow [2024-06-27 19:19:48,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 126 transitions, 1141 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:48,494 INFO L231 Difference]: Finished difference. Result has 135 places, 108 transitions, 888 flow [2024-06-27 19:19:48,494 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=811, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=888, PETRI_PLACES=135, PETRI_TRANSITIONS=108} [2024-06-27 19:19:48,494 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-27 19:19:48,495 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 108 transitions, 888 flow [2024-06-27 19:19:48,495 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) [2024-06-27 19:19:48,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:48,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:48,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 19:19:48,495 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)] === [2024-06-27 19:19:48,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:48,496 INFO L85 PathProgramCache]: Analyzing trace with hash 729963721, now seen corresponding path program 4 times [2024-06-27 19:19:48,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:48,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1527037706] [2024-06-27 19:19:48,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:48,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:50,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:50,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:50,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1527037706] [2024-06-27 19:19:50,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1527037706] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:50,994 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:50,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:50,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755177860] [2024-06-27 19:19:50,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:50,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:50,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:50,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:50,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:51,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:51,074 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 108 transitions, 888 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) [2024-06-27 19:19:51,074 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:51,074 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:51,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:51,401 INFO L124 PetriNetUnfolderBase]: 357/632 cut-off events. [2024-06-27 19:19:51,401 INFO L125 PetriNetUnfolderBase]: For 29340/29343 co-relation queries the response was YES. [2024-06-27 19:19:51,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3908 conditions, 632 events. 357/632 cut-off events. For 29340/29343 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2583 event pairs, 64 based on Foata normal form. 2/631 useless extension candidates. Maximal degree in co-relation 3841. Up to 540 conditions per place. [2024-06-27 19:19:51,405 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 100 selfloop transitions, 20 changer transitions 0/122 dead transitions. [2024-06-27 19:19:51,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 142 places, 122 transitions, 1162 flow [2024-06-27 19:19:51,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 19:19:51,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 19:19:51,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 90 transitions. [2024-06-27 19:19:51,406 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-27 19:19:51,406 INFO L175 Difference]: Start difference. First operand has 135 places, 108 transitions, 888 flow. Second operand 8 states and 90 transitions. [2024-06-27 19:19:51,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 142 places, 122 transitions, 1162 flow [2024-06-27 19:19:51,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 122 transitions, 1101 flow, removed 14 selfloop flow, removed 8 redundant places. [2024-06-27 19:19:51,444 INFO L231 Difference]: Finished difference. Result has 135 places, 108 transitions, 871 flow [2024-06-27 19:19:51,444 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=871, PETRI_PLACES=135, PETRI_TRANSITIONS=108} [2024-06-27 19:19:51,445 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-27 19:19:51,445 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 108 transitions, 871 flow [2024-06-27 19:19:51,445 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) [2024-06-27 19:19:51,445 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:51,445 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:51,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 19:19:51,445 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)] === [2024-06-27 19:19:51,445 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:51,446 INFO L85 PathProgramCache]: Analyzing trace with hash 842008527, now seen corresponding path program 5 times [2024-06-27 19:19:51,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:51,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849947124] [2024-06-27 19:19:51,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:51,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:51,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:53,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:53,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:53,835 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849947124] [2024-06-27 19:19:53,835 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849947124] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:53,835 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:53,835 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:19:53,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213416228] [2024-06-27 19:19:53,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:53,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:19:53,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:53,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:19:53,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:19:53,940 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:53,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 108 transitions, 871 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) [2024-06-27 19:19:53,941 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:53,941 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:53,941 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:54,570 INFO L124 PetriNetUnfolderBase]: 373/660 cut-off events. [2024-06-27 19:19:54,570 INFO L125 PetriNetUnfolderBase]: For 32867/32867 co-relation queries the response was YES. [2024-06-27 19:19:54,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4171 conditions, 660 events. 373/660 cut-off events. For 32867/32867 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 2735 event pairs, 52 based on Foata normal form. 2/657 useless extension candidates. Maximal degree in co-relation 4103. Up to 521 conditions per place. [2024-06-27 19:19:54,575 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 104 selfloop transitions, 31 changer transitions 0/137 dead transitions. [2024-06-27 19:19:54,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 137 transitions, 1390 flow [2024-06-27 19:19:54,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:19:54,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:19:54,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-06-27 19:19:54,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.365625 [2024-06-27 19:19:54,576 INFO L175 Difference]: Start difference. First operand has 135 places, 108 transitions, 871 flow. Second operand 10 states and 117 transitions. [2024-06-27 19:19:54,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 137 transitions, 1390 flow [2024-06-27 19:19:54,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 137 places, 137 transitions, 1316 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:54,618 INFO L231 Difference]: Finished difference. Result has 139 places, 114 transitions, 958 flow [2024-06-27 19:19:54,618 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=799, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=958, PETRI_PLACES=139, PETRI_TRANSITIONS=114} [2024-06-27 19:19:54,618 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-27 19:19:54,618 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 114 transitions, 958 flow [2024-06-27 19:19:54,619 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) [2024-06-27 19:19:54,619 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:54,619 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:54,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 19:19:54,619 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)] === [2024-06-27 19:19:54,619 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:54,620 INFO L85 PathProgramCache]: Analyzing trace with hash 730141661, now seen corresponding path program 6 times [2024-06-27 19:19:54,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:54,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274964219] [2024-06-27 19:19:54,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:54,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:54,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:56,593 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:56,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:56,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274964219] [2024-06-27 19:19:56,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274964219] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:56,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:56,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:56,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166004238] [2024-06-27 19:19:56,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:56,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:56,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:56,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:56,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:56,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:56,698 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 114 transitions, 958 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) [2024-06-27 19:19:56,698 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:56,698 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:56,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:57,172 INFO L124 PetriNetUnfolderBase]: 379/668 cut-off events. [2024-06-27 19:19:57,172 INFO L125 PetriNetUnfolderBase]: For 34684/34687 co-relation queries the response was YES. [2024-06-27 19:19:57,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4301 conditions, 668 events. 379/668 cut-off events. For 34684/34687 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2801 event pairs, 64 based on Foata normal form. 2/667 useless extension candidates. Maximal degree in co-relation 4231. Up to 552 conditions per place. [2024-06-27 19:19:57,176 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 104 selfloop transitions, 27 changer transitions 0/133 dead transitions. [2024-06-27 19:19:57,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 133 transitions, 1302 flow [2024-06-27 19:19:57,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:57,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:57,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 104 transitions. [2024-06-27 19:19:57,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3611111111111111 [2024-06-27 19:19:57,177 INFO L175 Difference]: Start difference. First operand has 139 places, 114 transitions, 958 flow. Second operand 9 states and 104 transitions. [2024-06-27 19:19:57,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 133 transitions, 1302 flow [2024-06-27 19:19:57,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 133 transitions, 1218 flow, removed 25 selfloop flow, removed 5 redundant places. [2024-06-27 19:19:57,225 INFO L231 Difference]: Finished difference. Result has 143 places, 116 transitions, 977 flow [2024-06-27 19:19:57,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=977, PETRI_PLACES=143, PETRI_TRANSITIONS=116} [2024-06-27 19:19:57,226 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-27 19:19:57,226 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 116 transitions, 977 flow [2024-06-27 19:19:57,226 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) [2024-06-27 19:19:57,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:57,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:57,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 19:19:57,226 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)] === [2024-06-27 19:19:57,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:57,227 INFO L85 PathProgramCache]: Analyzing trace with hash 729968681, now seen corresponding path program 7 times [2024-06-27 19:19:57,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:57,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [333071848] [2024-06-27 19:19:57,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:57,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:57,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:19:59,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:19:59,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:19:59,078 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [333071848] [2024-06-27 19:19:59,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [333071848] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:19:59,078 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:19:59,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:19:59,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708141376] [2024-06-27 19:19:59,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:19:59,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:19:59,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:19:59,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:19:59,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:19:59,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:19:59,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 116 transitions, 977 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) [2024-06-27 19:19:59,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:19:59,153 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:19:59,153 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:19:59,549 INFO L124 PetriNetUnfolderBase]: 375/662 cut-off events. [2024-06-27 19:19:59,550 INFO L125 PetriNetUnfolderBase]: For 33668/33671 co-relation queries the response was YES. [2024-06-27 19:19:59,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4169 conditions, 662 events. 375/662 cut-off events. For 33668/33671 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2776 event pairs, 66 based on Foata normal form. 2/661 useless extension candidates. Maximal degree in co-relation 4097. Up to 560 conditions per place. [2024-06-27 19:19:59,554 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 105 selfloop transitions, 24 changer transitions 0/131 dead transitions. [2024-06-27 19:19:59,554 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 131 transitions, 1271 flow [2024-06-27 19:19:59,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:19:59,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:19:59,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-06-27 19:19:59,555 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3472222222222222 [2024-06-27 19:19:59,555 INFO L175 Difference]: Start difference. First operand has 143 places, 116 transitions, 977 flow. Second operand 9 states and 100 transitions. [2024-06-27 19:19:59,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 131 transitions, 1271 flow [2024-06-27 19:19:59,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 131 transitions, 1176 flow, removed 22 selfloop flow, removed 7 redundant places. [2024-06-27 19:19:59,611 INFO L231 Difference]: Finished difference. Result has 145 places, 116 transitions, 935 flow [2024-06-27 19:19:59,611 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=882, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=935, PETRI_PLACES=145, PETRI_TRANSITIONS=116} [2024-06-27 19:19:59,611 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 114 predicate places. [2024-06-27 19:19:59,611 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 116 transitions, 935 flow [2024-06-27 19:19:59,612 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) [2024-06-27 19:19:59,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:19:59,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:19:59,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 19:19:59,612 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)] === [2024-06-27 19:19:59,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:19:59,612 INFO L85 PathProgramCache]: Analyzing trace with hash 106567167, now seen corresponding path program 2 times [2024-06-27 19:19:59,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:19:59,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [992179573] [2024-06-27 19:19:59,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:19:59,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:19:59,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:02,270 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:02,270 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:02,271 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [992179573] [2024-06-27 19:20:02,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [992179573] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:02,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:02,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:02,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621492562] [2024-06-27 19:20:02,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:02,272 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:02,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:02,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:02,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:02,416 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:02,416 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 116 transitions, 935 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) [2024-06-27 19:20:02,416 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:02,416 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:02,416 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:02,803 INFO L124 PetriNetUnfolderBase]: 391/686 cut-off events. [2024-06-27 19:20:02,803 INFO L125 PetriNetUnfolderBase]: For 37415/37415 co-relation queries the response was YES. [2024-06-27 19:20:02,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4374 conditions, 686 events. 391/686 cut-off events. For 37415/37415 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2905 event pairs, 90 based on Foata normal form. 2/687 useless extension candidates. Maximal degree in co-relation 4301. Up to 640 conditions per place. [2024-06-27 19:20:02,807 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 113 selfloop transitions, 19 changer transitions 0/134 dead transitions. [2024-06-27 19:20:02,807 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 134 transitions, 1402 flow [2024-06-27 19:20:02,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:02,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:02,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-27 19:20:02,808 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-27 19:20:02,809 INFO L175 Difference]: Start difference. First operand has 145 places, 116 transitions, 935 flow. Second operand 10 states and 102 transitions. [2024-06-27 19:20:02,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 134 transitions, 1402 flow [2024-06-27 19:20:02,866 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 134 transitions, 1340 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:02,867 INFO L231 Difference]: Finished difference. Result has 147 places, 120 transitions, 988 flow [2024-06-27 19:20:02,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=873, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=116, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=988, PETRI_PLACES=147, PETRI_TRANSITIONS=120} [2024-06-27 19:20:02,868 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 116 predicate places. [2024-06-27 19:20:02,868 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 120 transitions, 988 flow [2024-06-27 19:20:02,868 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) [2024-06-27 19:20:02,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:02,868 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:02,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 19:20:02,868 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)] === [2024-06-27 19:20:02,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:02,869 INFO L85 PathProgramCache]: Analyzing trace with hash 2004760071, now seen corresponding path program 8 times [2024-06-27 19:20:02,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:02,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836841065] [2024-06-27 19:20:02,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:02,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:05,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:05,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:05,395 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836841065] [2024-06-27 19:20:05,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836841065] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:05,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:05,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:05,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137099187] [2024-06-27 19:20:05,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:05,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:05,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:05,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:05,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:05,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:05,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 120 transitions, 988 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) [2024-06-27 19:20:05,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:05,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:05,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:06,018 INFO L124 PetriNetUnfolderBase]: 397/698 cut-off events. [2024-06-27 19:20:06,018 INFO L125 PetriNetUnfolderBase]: For 39259/39262 co-relation queries the response was YES. [2024-06-27 19:20:06,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4473 conditions, 698 events. 397/698 cut-off events. For 39259/39262 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 2952 event pairs, 59 based on Foata normal form. 2/697 useless extension candidates. Maximal degree in co-relation 4399. Up to 431 conditions per place. [2024-06-27 19:20:06,023 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 79 selfloop transitions, 61 changer transitions 0/142 dead transitions. [2024-06-27 19:20:06,023 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 142 transitions, 1492 flow [2024-06-27 19:20:06,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:06,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:06,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-06-27 19:20:06,024 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3715277777777778 [2024-06-27 19:20:06,024 INFO L175 Difference]: Start difference. First operand has 147 places, 120 transitions, 988 flow. Second operand 9 states and 107 transitions. [2024-06-27 19:20:06,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 142 transitions, 1492 flow [2024-06-27 19:20:06,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 142 transitions, 1440 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 19:20:06,085 INFO L231 Difference]: Finished difference. Result has 150 places, 124 transitions, 1147 flow [2024-06-27 19:20:06,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=936, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1147, PETRI_PLACES=150, PETRI_TRANSITIONS=124} [2024-06-27 19:20:06,086 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 119 predicate places. [2024-06-27 19:20:06,086 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 124 transitions, 1147 flow [2024-06-27 19:20:06,086 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) [2024-06-27 19:20:06,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:06,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:06,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 19:20:06,087 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)] === [2024-06-27 19:20:06,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:06,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1936879385, now seen corresponding path program 3 times [2024-06-27 19:20:06,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:06,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932194175] [2024-06-27 19:20:06,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:06,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:06,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:09,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:09,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:09,297 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932194175] [2024-06-27 19:20:09,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932194175] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:09,297 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:09,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:09,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280791834] [2024-06-27 19:20:09,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:09,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:09,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:09,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:09,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:09,441 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:09,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 124 transitions, 1147 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) [2024-06-27 19:20:09,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:09,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:09,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:09,842 INFO L124 PetriNetUnfolderBase]: 403/708 cut-off events. [2024-06-27 19:20:09,842 INFO L125 PetriNetUnfolderBase]: For 41042/41045 co-relation queries the response was YES. [2024-06-27 19:20:09,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4721 conditions, 708 events. 403/708 cut-off events. For 41042/41045 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 3035 event pairs, 87 based on Foata normal form. 4/709 useless extension candidates. Maximal degree in co-relation 4645. Up to 630 conditions per place. [2024-06-27 19:20:09,846 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 118 selfloop transitions, 22 changer transitions 0/142 dead transitions. [2024-06-27 19:20:09,846 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 142 transitions, 1514 flow [2024-06-27 19:20:09,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:09,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:09,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 19:20:09,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-27 19:20:09,847 INFO L175 Difference]: Start difference. First operand has 150 places, 124 transitions, 1147 flow. Second operand 10 states and 105 transitions. [2024-06-27 19:20:09,847 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 142 transitions, 1514 flow [2024-06-27 19:20:09,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 142 transitions, 1416 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-06-27 19:20:09,911 INFO L231 Difference]: Finished difference. Result has 155 places, 126 transitions, 1140 flow [2024-06-27 19:20:09,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1049, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1140, PETRI_PLACES=155, PETRI_TRANSITIONS=126} [2024-06-27 19:20:09,911 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-27 19:20:09,911 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 126 transitions, 1140 flow [2024-06-27 19:20:09,912 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) [2024-06-27 19:20:09,912 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:09,912 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:09,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 19:20:09,912 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)] === [2024-06-27 19:20:09,913 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:09,913 INFO L85 PathProgramCache]: Analyzing trace with hash 393444267, now seen corresponding path program 4 times [2024-06-27 19:20:09,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:09,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741687821] [2024-06-27 19:20:09,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:09,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:09,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:12,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:12,392 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:12,392 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741687821] [2024-06-27 19:20:12,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741687821] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:12,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:12,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:12,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902794609] [2024-06-27 19:20:12,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:12,393 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:12,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:12,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:12,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:12,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:12,527 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 126 transitions, 1140 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) [2024-06-27 19:20:12,527 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:12,527 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:12,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:12,979 INFO L124 PetriNetUnfolderBase]: 399/700 cut-off events. [2024-06-27 19:20:12,979 INFO L125 PetriNetUnfolderBase]: For 39370/39370 co-relation queries the response was YES. [2024-06-27 19:20:12,982 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4578 conditions, 700 events. 399/700 cut-off events. For 39370/39370 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 2985 event pairs, 92 based on Foata normal form. 2/701 useless extension candidates. Maximal degree in co-relation 4500. Up to 657 conditions per place. [2024-06-27 19:20:12,984 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 117 selfloop transitions, 19 changer transitions 0/138 dead transitions. [2024-06-27 19:20:12,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 138 transitions, 1445 flow [2024-06-27 19:20:12,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:12,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:12,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 99 transitions. [2024-06-27 19:20:12,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.309375 [2024-06-27 19:20:12,985 INFO L175 Difference]: Start difference. First operand has 155 places, 126 transitions, 1140 flow. Second operand 10 states and 99 transitions. [2024-06-27 19:20:12,985 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 138 transitions, 1445 flow [2024-06-27 19:20:13,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 138 transitions, 1346 flow, removed 29 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:13,040 INFO L231 Difference]: Finished difference. Result has 157 places, 126 transitions, 1088 flow [2024-06-27 19:20:13,040 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1041, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1088, PETRI_PLACES=157, PETRI_TRANSITIONS=126} [2024-06-27 19:20:13,041 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-27 19:20:13,041 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 126 transitions, 1088 flow [2024-06-27 19:20:13,041 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) [2024-06-27 19:20:13,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:13,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:13,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 19:20:13,042 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)] === [2024-06-27 19:20:13,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:13,042 INFO L85 PathProgramCache]: Analyzing trace with hash 383324937, now seen corresponding path program 5 times [2024-06-27 19:20:13,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:13,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58311291] [2024-06-27 19:20:13,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:13,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:13,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:15,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:15,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:15,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58311291] [2024-06-27 19:20:15,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58311291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:15,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:15,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:15,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637110633] [2024-06-27 19:20:15,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:15,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:15,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:15,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:15,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:15,872 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:15,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 126 transitions, 1088 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) [2024-06-27 19:20:15,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:15,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:15,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:16,427 INFO L124 PetriNetUnfolderBase]: 405/712 cut-off events. [2024-06-27 19:20:16,427 INFO L125 PetriNetUnfolderBase]: For 40820/40823 co-relation queries the response was YES. [2024-06-27 19:20:16,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4617 conditions, 712 events. 405/712 cut-off events. For 40820/40823 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3058 event pairs, 80 based on Foata normal form. 4/713 useless extension candidates. Maximal degree in co-relation 4538. Up to 586 conditions per place. [2024-06-27 19:20:16,431 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 104 selfloop transitions, 38 changer transitions 0/144 dead transitions. [2024-06-27 19:20:16,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 166 places, 144 transitions, 1463 flow [2024-06-27 19:20:16,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:16,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:16,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 19:20:16,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-27 19:20:16,433 INFO L175 Difference]: Start difference. First operand has 157 places, 126 transitions, 1088 flow. Second operand 10 states and 107 transitions. [2024-06-27 19:20:16,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 166 places, 144 transitions, 1463 flow [2024-06-27 19:20:16,491 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 144 transitions, 1420 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 19:20:16,493 INFO L231 Difference]: Finished difference. Result has 157 places, 128 transitions, 1172 flow [2024-06-27 19:20:16,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1045, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1172, PETRI_PLACES=157, PETRI_TRANSITIONS=128} [2024-06-27 19:20:16,493 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 126 predicate places. [2024-06-27 19:20:16,494 INFO L495 AbstractCegarLoop]: Abstraction has has 157 places, 128 transitions, 1172 flow [2024-06-27 19:20:16,494 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) [2024-06-27 19:20:16,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:16,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:16,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 19:20:16,494 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)] === [2024-06-27 19:20:16,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:16,494 INFO L85 PathProgramCache]: Analyzing trace with hash 97985499, now seen corresponding path program 9 times [2024-06-27 19:20:16,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:16,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58772906] [2024-06-27 19:20:16,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:16,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:16,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:18,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:18,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:18,731 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58772906] [2024-06-27 19:20:18,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [58772906] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:18,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:18,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:18,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567737055] [2024-06-27 19:20:18,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:18,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:18,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:18,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:18,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:18,876 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:18,876 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 128 transitions, 1172 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) [2024-06-27 19:20:18,876 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:18,876 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:18,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:19,369 INFO L124 PetriNetUnfolderBase]: 411/722 cut-off events. [2024-06-27 19:20:19,370 INFO L125 PetriNetUnfolderBase]: For 40997/41000 co-relation queries the response was YES. [2024-06-27 19:20:19,373 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4770 conditions, 722 events. 411/722 cut-off events. For 40997/41000 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3111 event pairs, 61 based on Foata normal form. 2/721 useless extension candidates. Maximal degree in co-relation 4691. Up to 539 conditions per place. [2024-06-27 19:20:19,375 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 105 selfloop transitions, 42 changer transitions 0/149 dead transitions. [2024-06-27 19:20:19,375 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 149 transitions, 1658 flow [2024-06-27 19:20:19,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:19,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:19,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 108 transitions. [2024-06-27 19:20:19,376 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 19:20:19,376 INFO L175 Difference]: Start difference. First operand has 157 places, 128 transitions, 1172 flow. Second operand 9 states and 108 transitions. [2024-06-27 19:20:19,376 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 149 transitions, 1658 flow [2024-06-27 19:20:19,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 149 transitions, 1547 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:19,441 INFO L231 Difference]: Finished difference. Result has 158 places, 130 transitions, 1190 flow [2024-06-27 19:20:19,442 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1061, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1190, PETRI_PLACES=158, PETRI_TRANSITIONS=130} [2024-06-27 19:20:19,442 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-27 19:20:19,442 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 130 transitions, 1190 flow [2024-06-27 19:20:19,442 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) [2024-06-27 19:20:19,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:19,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:19,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 19:20:19,442 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)] === [2024-06-27 19:20:19,443 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:19,443 INFO L85 PathProgramCache]: Analyzing trace with hash 98225067, now seen corresponding path program 6 times [2024-06-27 19:20:19,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:19,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [554678284] [2024-06-27 19:20:19,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:19,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:19,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:22,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:22,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:22,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [554678284] [2024-06-27 19:20:22,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [554678284] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:22,727 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:22,727 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:22,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282462828] [2024-06-27 19:20:22,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:22,728 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:22,728 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:22,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:22,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:22,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:22,880 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 130 transitions, 1190 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) [2024-06-27 19:20:22,880 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:22,880 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:22,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:23,353 INFO L124 PetriNetUnfolderBase]: 412/724 cut-off events. [2024-06-27 19:20:23,353 INFO L125 PetriNetUnfolderBase]: For 41209/41212 co-relation queries the response was YES. [2024-06-27 19:20:23,356 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4773 conditions, 724 events. 412/724 cut-off events. For 41209/41212 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3116 event pairs, 86 based on Foata normal form. 4/725 useless extension candidates. Maximal degree in co-relation 4693. Up to 626 conditions per place. [2024-06-27 19:20:23,358 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 117 selfloop transitions, 29 changer transitions 0/148 dead transitions. [2024-06-27 19:20:23,358 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 148 transitions, 1577 flow [2024-06-27 19:20:23,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:23,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:23,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 19:20:23,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-27 19:20:23,360 INFO L175 Difference]: Start difference. First operand has 158 places, 130 transitions, 1190 flow. Second operand 10 states and 106 transitions. [2024-06-27 19:20:23,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 148 transitions, 1577 flow [2024-06-27 19:20:23,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 148 transitions, 1388 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 19:20:23,426 INFO L231 Difference]: Finished difference. Result has 159 places, 132 transitions, 1114 flow [2024-06-27 19:20:23,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1001, PETRI_DIFFERENCE_MINUEND_PLACES=149, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1114, PETRI_PLACES=159, PETRI_TRANSITIONS=132} [2024-06-27 19:20:23,426 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 128 predicate places. [2024-06-27 19:20:23,426 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 132 transitions, 1114 flow [2024-06-27 19:20:23,427 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) [2024-06-27 19:20:23,427 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:23,427 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:23,427 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 19:20:23,427 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)] === [2024-06-27 19:20:23,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:23,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1787573981, now seen corresponding path program 10 times [2024-06-27 19:20:23,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:23,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531730257] [2024-06-27 19:20:23,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:23,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:25,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:25,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:25,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531730257] [2024-06-27 19:20:25,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [531730257] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:25,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:25,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 19:20:25,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886659914] [2024-06-27 19:20:25,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:25,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 19:20:25,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:25,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 19:20:25,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-06-27 19:20:25,643 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:25,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 132 transitions, 1114 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) [2024-06-27 19:20:25,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:25,643 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:25,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:26,155 INFO L124 PetriNetUnfolderBase]: 408/718 cut-off events. [2024-06-27 19:20:26,155 INFO L125 PetriNetUnfolderBase]: For 39398/39401 co-relation queries the response was YES. [2024-06-27 19:20:26,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4448 conditions, 718 events. 408/718 cut-off events. For 39398/39401 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3093 event pairs, 61 based on Foata normal form. 2/717 useless extension candidates. Maximal degree in co-relation 4369. Up to 552 conditions per place. [2024-06-27 19:20:26,160 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 107 selfloop transitions, 39 changer transitions 0/148 dead transitions. [2024-06-27 19:20:26,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 148 transitions, 1446 flow [2024-06-27 19:20:26,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:26,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 19:20:26,161 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-27 19:20:26,161 INFO L175 Difference]: Start difference. First operand has 159 places, 132 transitions, 1114 flow. Second operand 9 states and 103 transitions. [2024-06-27 19:20:26,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 148 transitions, 1446 flow [2024-06-27 19:20:26,238 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 148 transitions, 1327 flow, removed 32 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:26,240 INFO L231 Difference]: Finished difference. Result has 160 places, 132 transitions, 1078 flow [2024-06-27 19:20:26,240 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=995, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1078, PETRI_PLACES=160, PETRI_TRANSITIONS=132} [2024-06-27 19:20:26,241 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 129 predicate places. [2024-06-27 19:20:26,241 INFO L495 AbstractCegarLoop]: Abstraction has has 160 places, 132 transitions, 1078 flow [2024-06-27 19:20:26,241 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) [2024-06-27 19:20:26,241 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:26,241 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:26,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 19:20:26,241 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)] === [2024-06-27 19:20:26,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:26,242 INFO L85 PathProgramCache]: Analyzing trace with hash 679658066, now seen corresponding path program 1 times [2024-06-27 19:20:26,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:26,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [247314163] [2024-06-27 19:20:26,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:26,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:26,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:28,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:28,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:28,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [247314163] [2024-06-27 19:20:28,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [247314163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:28,539 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:28,539 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:28,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334994426] [2024-06-27 19:20:28,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:28,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:28,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:28,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:28,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:28,664 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:28,664 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 132 transitions, 1078 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) [2024-06-27 19:20:28,664 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:28,664 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:28,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:29,191 INFO L124 PetriNetUnfolderBase]: 448/790 cut-off events. [2024-06-27 19:20:29,191 INFO L125 PetriNetUnfolderBase]: For 40822/40822 co-relation queries the response was YES. [2024-06-27 19:20:29,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4752 conditions, 790 events. 448/790 cut-off events. For 40822/40822 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3489 event pairs, 81 based on Foata normal form. 2/791 useless extension candidates. Maximal degree in co-relation 4672. Up to 696 conditions per place. [2024-06-27 19:20:29,196 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 141 selfloop transitions, 22 changer transitions 0/165 dead transitions. [2024-06-27 19:20:29,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 165 transitions, 1582 flow [2024-06-27 19:20:29,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:29,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:29,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:20:29,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:20:29,197 INFO L175 Difference]: Start difference. First operand has 160 places, 132 transitions, 1078 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:20:29,197 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 165 transitions, 1582 flow [2024-06-27 19:20:29,257 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 165 transitions, 1479 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:29,258 INFO L231 Difference]: Finished difference. Result has 166 places, 145 transitions, 1183 flow [2024-06-27 19:20:29,259 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=995, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1183, PETRI_PLACES=166, PETRI_TRANSITIONS=145} [2024-06-27 19:20:29,259 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-27 19:20:29,259 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 145 transitions, 1183 flow [2024-06-27 19:20:29,259 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) [2024-06-27 19:20:29,259 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:29,259 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:29,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 19:20:29,259 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)] === [2024-06-27 19:20:29,260 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:29,260 INFO L85 PathProgramCache]: Analyzing trace with hash -1744275594, now seen corresponding path program 2 times [2024-06-27 19:20:29,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:29,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880759638] [2024-06-27 19:20:29,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:29,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:29,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:31,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:31,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:31,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880759638] [2024-06-27 19:20:31,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880759638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:31,486 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:31,486 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:31,486 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097090438] [2024-06-27 19:20:31,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:31,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:31,487 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:31,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:31,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:31,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:31,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 145 transitions, 1183 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) [2024-06-27 19:20:31,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:31,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:31,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:32,150 INFO L124 PetriNetUnfolderBase]: 452/798 cut-off events. [2024-06-27 19:20:32,150 INFO L125 PetriNetUnfolderBase]: For 42419/42419 co-relation queries the response was YES. [2024-06-27 19:20:32,153 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4817 conditions, 798 events. 452/798 cut-off events. For 42419/42419 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3532 event pairs, 89 based on Foata normal form. 2/799 useless extension candidates. Maximal degree in co-relation 4732. Up to 678 conditions per place. [2024-06-27 19:20:32,155 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 134 selfloop transitions, 27 changer transitions 0/163 dead transitions. [2024-06-27 19:20:32,155 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 163 transitions, 1570 flow [2024-06-27 19:20:32,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:32,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:32,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 19:20:32,156 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-27 19:20:32,157 INFO L175 Difference]: Start difference. First operand has 166 places, 145 transitions, 1183 flow. Second operand 9 states and 98 transitions. [2024-06-27 19:20:32,157 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 163 transitions, 1570 flow [2024-06-27 19:20:32,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 163 transitions, 1536 flow, removed 7 selfloop flow, removed 3 redundant places. [2024-06-27 19:20:32,222 INFO L231 Difference]: Finished difference. Result has 172 places, 146 transitions, 1229 flow [2024-06-27 19:20:32,223 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1149, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1229, PETRI_PLACES=172, PETRI_TRANSITIONS=146} [2024-06-27 19:20:32,223 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-27 19:20:32,223 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 146 transitions, 1229 flow [2024-06-27 19:20:32,223 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) [2024-06-27 19:20:32,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:32,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:32,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 19:20:32,223 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)] === [2024-06-27 19:20:32,224 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:32,224 INFO L85 PathProgramCache]: Analyzing trace with hash -181048696, now seen corresponding path program 3 times [2024-06-27 19:20:32,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:32,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775516391] [2024-06-27 19:20:32,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:32,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:34,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:34,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:34,344 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775516391] [2024-06-27 19:20:34,344 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775516391] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:34,344 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:34,344 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:34,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228831715] [2024-06-27 19:20:34,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:34,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:34,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:34,345 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:34,345 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:34,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:34,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 146 transitions, 1229 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) [2024-06-27 19:20:34,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:34,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:34,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:35,032 INFO L124 PetriNetUnfolderBase]: 456/806 cut-off events. [2024-06-27 19:20:35,032 INFO L125 PetriNetUnfolderBase]: For 44096/44096 co-relation queries the response was YES. [2024-06-27 19:20:35,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4920 conditions, 806 events. 456/806 cut-off events. For 44096/44096 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 3591 event pairs, 89 based on Foata normal form. 2/807 useless extension candidates. Maximal degree in co-relation 4834. Up to 698 conditions per place. [2024-06-27 19:20:35,037 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 139 selfloop transitions, 23 changer transitions 0/164 dead transitions. [2024-06-27 19:20:35,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 164 transitions, 1620 flow [2024-06-27 19:20:35,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:35,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:35,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 97 transitions. [2024-06-27 19:20:35,040 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3368055555555556 [2024-06-27 19:20:35,040 INFO L175 Difference]: Start difference. First operand has 172 places, 146 transitions, 1229 flow. Second operand 9 states and 97 transitions. [2024-06-27 19:20:35,040 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 164 transitions, 1620 flow [2024-06-27 19:20:35,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 164 transitions, 1550 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 19:20:35,110 INFO L231 Difference]: Finished difference. Result has 174 places, 147 transitions, 1231 flow [2024-06-27 19:20:35,110 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=146, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1231, PETRI_PLACES=174, PETRI_TRANSITIONS=147} [2024-06-27 19:20:35,110 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 143 predicate places. [2024-06-27 19:20:35,111 INFO L495 AbstractCegarLoop]: Abstraction has has 174 places, 147 transitions, 1231 flow [2024-06-27 19:20:35,111 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) [2024-06-27 19:20:35,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:35,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:35,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 19:20:35,111 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)] === [2024-06-27 19:20:35,111 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:35,111 INFO L85 PathProgramCache]: Analyzing trace with hash -973194510, now seen corresponding path program 4 times [2024-06-27 19:20:35,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:35,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621476605] [2024-06-27 19:20:35,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:35,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:35,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:37,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:37,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:37,414 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621476605] [2024-06-27 19:20:37,414 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621476605] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:37,414 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:37,414 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:37,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812677178] [2024-06-27 19:20:37,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:37,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:37,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:37,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:37,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:37,522 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:37,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 174 places, 147 transitions, 1231 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) [2024-06-27 19:20:37,522 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:37,522 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:37,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:38,015 INFO L124 PetriNetUnfolderBase]: 460/814 cut-off events. [2024-06-27 19:20:38,015 INFO L125 PetriNetUnfolderBase]: For 43000/43000 co-relation queries the response was YES. [2024-06-27 19:20:38,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4937 conditions, 814 events. 460/814 cut-off events. For 43000/43000 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3606 event pairs, 77 based on Foata normal form. 2/815 useless extension candidates. Maximal degree in co-relation 4850. Up to 702 conditions per place. [2024-06-27 19:20:38,021 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 143 selfloop transitions, 20 changer transitions 0/165 dead transitions. [2024-06-27 19:20:38,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 165 transitions, 1624 flow [2024-06-27 19:20:38,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:38,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:38,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 95 transitions. [2024-06-27 19:20:38,022 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3298611111111111 [2024-06-27 19:20:38,022 INFO L175 Difference]: Start difference. First operand has 174 places, 147 transitions, 1231 flow. Second operand 9 states and 95 transitions. [2024-06-27 19:20:38,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 182 places, 165 transitions, 1624 flow [2024-06-27 19:20:38,092 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 165 transitions, 1564 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 19:20:38,094 INFO L231 Difference]: Finished difference. Result has 176 places, 148 transitions, 1237 flow [2024-06-27 19:20:38,094 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1171, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1237, PETRI_PLACES=176, PETRI_TRANSITIONS=148} [2024-06-27 19:20:38,094 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-27 19:20:38,095 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 148 transitions, 1237 flow [2024-06-27 19:20:38,095 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) [2024-06-27 19:20:38,095 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:38,095 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:38,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 19:20:38,095 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)] === [2024-06-27 19:20:38,095 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:38,095 INFO L85 PathProgramCache]: Analyzing trace with hash -884474928, now seen corresponding path program 1 times [2024-06-27 19:20:38,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:38,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135109186] [2024-06-27 19:20:38,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:38,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:40,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:40,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:40,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135109186] [2024-06-27 19:20:40,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135109186] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:40,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:40,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:20:40,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [378790337] [2024-06-27 19:20:40,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:40,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:20:40,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:40,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:20:40,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:20:40,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:40,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 148 transitions, 1237 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) [2024-06-27 19:20:40,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:40,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:40,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:41,302 INFO L124 PetriNetUnfolderBase]: 466/824 cut-off events. [2024-06-27 19:20:41,302 INFO L125 PetriNetUnfolderBase]: For 45704/45704 co-relation queries the response was YES. [2024-06-27 19:20:41,306 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5001 conditions, 824 events. 466/824 cut-off events. For 45704/45704 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 3698 event pairs, 85 based on Foata normal form. 2/825 useless extension candidates. Maximal degree in co-relation 4913. Up to 696 conditions per place. [2024-06-27 19:20:41,308 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 138 selfloop transitions, 29 changer transitions 0/169 dead transitions. [2024-06-27 19:20:41,308 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 185 places, 169 transitions, 1658 flow [2024-06-27 19:20:41,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:41,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:41,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 19:20:41,309 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-27 19:20:41,309 INFO L175 Difference]: Start difference. First operand has 176 places, 148 transitions, 1237 flow. Second operand 10 states and 108 transitions. [2024-06-27 19:20:41,309 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 185 places, 169 transitions, 1658 flow [2024-06-27 19:20:41,379 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 169 transitions, 1602 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 19:20:41,381 INFO L231 Difference]: Finished difference. Result has 179 places, 150 transitions, 1284 flow [2024-06-27 19:20:41,381 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1181, PETRI_DIFFERENCE_MINUEND_PLACES=169, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=148, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=119, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1284, PETRI_PLACES=179, PETRI_TRANSITIONS=150} [2024-06-27 19:20:41,381 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-27 19:20:41,381 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 150 transitions, 1284 flow [2024-06-27 19:20:41,381 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) [2024-06-27 19:20:41,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:41,381 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:41,382 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 19:20:41,382 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)] === [2024-06-27 19:20:41,382 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:41,382 INFO L85 PathProgramCache]: Analyzing trace with hash -33227614, now seen corresponding path program 2 times [2024-06-27 19:20:41,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:41,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737244091] [2024-06-27 19:20:41,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:41,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:43,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:43,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:43,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737244091] [2024-06-27 19:20:43,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737244091] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:43,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:43,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:43,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120914815] [2024-06-27 19:20:43,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:43,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:43,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:43,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:43,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:43,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:43,931 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 150 transitions, 1284 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) [2024-06-27 19:20:43,931 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:43,931 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:43,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:44,623 INFO L124 PetriNetUnfolderBase]: 472/833 cut-off events. [2024-06-27 19:20:44,624 INFO L125 PetriNetUnfolderBase]: For 47116/47116 co-relation queries the response was YES. [2024-06-27 19:20:44,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5118 conditions, 833 events. 472/833 cut-off events. For 47116/47116 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3755 event pairs, 73 based on Foata normal form. 2/834 useless extension candidates. Maximal degree in co-relation 5029. Up to 623 conditions per place. [2024-06-27 19:20:44,629 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 123 selfloop transitions, 47 changer transitions 0/172 dead transitions. [2024-06-27 19:20:44,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 172 transitions, 1714 flow [2024-06-27 19:20:44,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:44,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:44,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 19:20:44,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-27 19:20:44,630 INFO L175 Difference]: Start difference. First operand has 179 places, 150 transitions, 1284 flow. Second operand 10 states and 113 transitions. [2024-06-27 19:20:44,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 172 transitions, 1714 flow [2024-06-27 19:20:44,717 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 172 transitions, 1627 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:44,718 INFO L231 Difference]: Finished difference. Result has 181 places, 152 transitions, 1340 flow [2024-06-27 19:20:44,719 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1197, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1340, PETRI_PLACES=181, PETRI_TRANSITIONS=152} [2024-06-27 19:20:44,719 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-27 19:20:44,719 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 152 transitions, 1340 flow [2024-06-27 19:20:44,719 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) [2024-06-27 19:20:44,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:44,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:44,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 19:20:44,720 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)] === [2024-06-27 19:20:44,720 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:44,720 INFO L85 PathProgramCache]: Analyzing trace with hash -33219895, now seen corresponding path program 1 times [2024-06-27 19:20:44,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:44,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405332829] [2024-06-27 19:20:44,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:44,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:47,785 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:47,785 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:47,785 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405332829] [2024-06-27 19:20:47,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405332829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:47,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:47,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:47,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836329213] [2024-06-27 19:20:47,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:47,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:47,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:47,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:47,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:47,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:47,910 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 152 transitions, 1340 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) [2024-06-27 19:20:47,910 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:47,910 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:47,910 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:48,380 INFO L124 PetriNetUnfolderBase]: 470/831 cut-off events. [2024-06-27 19:20:48,381 INFO L125 PetriNetUnfolderBase]: For 46087/46087 co-relation queries the response was YES. [2024-06-27 19:20:48,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5096 conditions, 831 events. 470/831 cut-off events. For 46087/46087 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 3754 event pairs, 97 based on Foata normal form. 1/831 useless extension candidates. Maximal degree in co-relation 5006. Up to 737 conditions per place. [2024-06-27 19:20:48,387 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 139 selfloop transitions, 30 changer transitions 0/171 dead transitions. [2024-06-27 19:20:48,387 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 171 transitions, 1783 flow [2024-06-27 19:20:48,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:48,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:48,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 19:20:48,389 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-27 19:20:48,389 INFO L175 Difference]: Start difference. First operand has 181 places, 152 transitions, 1340 flow. Second operand 10 states and 105 transitions. [2024-06-27 19:20:48,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 171 transitions, 1783 flow [2024-06-27 19:20:48,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 171 transitions, 1656 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:48,462 INFO L231 Difference]: Finished difference. Result has 183 places, 154 transitions, 1335 flow [2024-06-27 19:20:48,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1335, PETRI_PLACES=183, PETRI_TRANSITIONS=154} [2024-06-27 19:20:48,463 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 152 predicate places. [2024-06-27 19:20:48,463 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 154 transitions, 1335 flow [2024-06-27 19:20:48,463 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) [2024-06-27 19:20:48,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:48,464 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:48,464 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 19:20:48,464 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)] === [2024-06-27 19:20:48,464 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:48,464 INFO L85 PathProgramCache]: Analyzing trace with hash -33435376, now seen corresponding path program 5 times [2024-06-27 19:20:48,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:48,465 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719697320] [2024-06-27 19:20:48,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:48,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:50,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:50,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:50,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719697320] [2024-06-27 19:20:50,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719697320] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:50,877 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:50,877 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:50,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065785635] [2024-06-27 19:20:50,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:50,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:50,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:50,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:50,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:50,990 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:50,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 154 transitions, 1335 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) [2024-06-27 19:20:50,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:50,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:50,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:51,432 INFO L124 PetriNetUnfolderBase]: 474/838 cut-off events. [2024-06-27 19:20:51,432 INFO L125 PetriNetUnfolderBase]: For 49165/49165 co-relation queries the response was YES. [2024-06-27 19:20:51,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5099 conditions, 838 events. 474/838 cut-off events. For 49165/49165 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 3801 event pairs, 73 based on Foata normal form. 2/839 useless extension candidates. Maximal degree in co-relation 5008. Up to 677 conditions per place. [2024-06-27 19:20:51,438 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 134 selfloop transitions, 36 changer transitions 0/172 dead transitions. [2024-06-27 19:20:51,438 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 172 transitions, 1739 flow [2024-06-27 19:20:51,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:51,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:51,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-06-27 19:20:51,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3506944444444444 [2024-06-27 19:20:51,439 INFO L175 Difference]: Start difference. First operand has 183 places, 154 transitions, 1335 flow. Second operand 9 states and 101 transitions. [2024-06-27 19:20:51,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 172 transitions, 1739 flow [2024-06-27 19:20:51,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 172 transitions, 1637 flow, removed 24 selfloop flow, removed 8 redundant places. [2024-06-27 19:20:51,513 INFO L231 Difference]: Finished difference. Result has 184 places, 155 transitions, 1333 flow [2024-06-27 19:20:51,513 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1333, PETRI_PLACES=184, PETRI_TRANSITIONS=155} [2024-06-27 19:20:51,513 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-06-27 19:20:51,513 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 155 transitions, 1333 flow [2024-06-27 19:20:51,513 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) [2024-06-27 19:20:51,514 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:51,514 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:51,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 19:20:51,514 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)] === [2024-06-27 19:20:51,514 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:51,514 INFO L85 PathProgramCache]: Analyzing trace with hash -38941906, now seen corresponding path program 6 times [2024-06-27 19:20:51,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:51,514 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155702679] [2024-06-27 19:20:51,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:51,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:51,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:53,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:53,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:53,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155702679] [2024-06-27 19:20:53,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155702679] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:53,660 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:53,660 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:53,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572598802] [2024-06-27 19:20:53,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:53,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:53,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:53,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:53,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:53,731 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:53,731 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 155 transitions, 1333 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) [2024-06-27 19:20:53,731 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:53,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:53,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:54,300 INFO L124 PetriNetUnfolderBase]: 478/846 cut-off events. [2024-06-27 19:20:54,300 INFO L125 PetriNetUnfolderBase]: For 49729/49729 co-relation queries the response was YES. [2024-06-27 19:20:54,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5143 conditions, 846 events. 478/846 cut-off events. For 49729/49729 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 3869 event pairs, 78 based on Foata normal form. 2/847 useless extension candidates. Maximal degree in co-relation 5051. Up to 720 conditions per place. [2024-06-27 19:20:54,305 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 142 selfloop transitions, 28 changer transitions 0/172 dead transitions. [2024-06-27 19:20:54,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 172 transitions, 1735 flow [2024-06-27 19:20:54,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:20:54,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:20:54,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 19:20:54,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:20:54,306 INFO L175 Difference]: Start difference. First operand has 184 places, 155 transitions, 1333 flow. Second operand 9 states and 99 transitions. [2024-06-27 19:20:54,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 172 transitions, 1735 flow [2024-06-27 19:20:54,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 185 places, 172 transitions, 1645 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 19:20:54,394 INFO L231 Difference]: Finished difference. Result has 186 places, 156 transitions, 1329 flow [2024-06-27 19:20:54,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1329, PETRI_PLACES=186, PETRI_TRANSITIONS=156} [2024-06-27 19:20:54,395 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 155 predicate places. [2024-06-27 19:20:54,395 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 156 transitions, 1329 flow [2024-06-27 19:20:54,395 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) [2024-06-27 19:20:54,395 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:54,395 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:54,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 19:20:54,395 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)] === [2024-06-27 19:20:54,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:54,395 INFO L85 PathProgramCache]: Analyzing trace with hash -33220174, now seen corresponding path program 3 times [2024-06-27 19:20:54,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:54,396 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693543932] [2024-06-27 19:20:54,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:54,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:54,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:20:57,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:20:57,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:20:57,113 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693543932] [2024-06-27 19:20:57,113 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693543932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:20:57,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:20:57,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:20:57,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495786535] [2024-06-27 19:20:57,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:20:57,114 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:20:57,114 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:20:57,114 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:20:57,114 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:20:57,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:20:57,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 156 transitions, 1329 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) [2024-06-27 19:20:57,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:20:57,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:20:57,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:20:57,986 INFO L124 PetriNetUnfolderBase]: 494/872 cut-off events. [2024-06-27 19:20:57,987 INFO L125 PetriNetUnfolderBase]: For 55430/55430 co-relation queries the response was YES. [2024-06-27 19:20:57,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5432 conditions, 872 events. 494/872 cut-off events. For 55430/55430 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3991 event pairs, 74 based on Foata normal form. 2/873 useless extension candidates. Maximal degree in co-relation 5339. Up to 620 conditions per place. [2024-06-27 19:20:57,994 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 125 selfloop transitions, 55 changer transitions 0/182 dead transitions. [2024-06-27 19:20:57,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 182 transitions, 1957 flow [2024-06-27 19:20:57,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:20:57,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:20:57,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 19:20:57,995 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-27 19:20:57,995 INFO L175 Difference]: Start difference. First operand has 186 places, 156 transitions, 1329 flow. Second operand 10 states and 116 transitions. [2024-06-27 19:20:57,995 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 182 transitions, 1957 flow [2024-06-27 19:20:58,083 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 182 transitions, 1881 flow, removed 11 selfloop flow, removed 7 redundant places. [2024-06-27 19:20:58,085 INFO L231 Difference]: Finished difference. Result has 189 places, 160 transitions, 1461 flow [2024-06-27 19:20:58,085 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=156, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1461, PETRI_PLACES=189, PETRI_TRANSITIONS=160} [2024-06-27 19:20:58,085 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-27 19:20:58,085 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 160 transitions, 1461 flow [2024-06-27 19:20:58,086 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) [2024-06-27 19:20:58,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:20:58,086 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:20:58,086 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 19:20:58,086 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)] === [2024-06-27 19:20:58,086 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:20:58,086 INFO L85 PathProgramCache]: Analyzing trace with hash -1600053574, now seen corresponding path program 4 times [2024-06-27 19:20:58,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:20:58,086 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1796194547] [2024-06-27 19:20:58,086 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:20:58,086 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:20:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:00,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:00,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:00,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1796194547] [2024-06-27 19:21:00,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1796194547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:00,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:00,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:00,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974880494] [2024-06-27 19:21:00,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:00,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:00,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:00,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:00,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:00,622 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:00,623 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 160 transitions, 1461 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) [2024-06-27 19:21:00,623 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:00,623 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:00,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:01,297 INFO L124 PetriNetUnfolderBase]: 500/882 cut-off events. [2024-06-27 19:21:01,297 INFO L125 PetriNetUnfolderBase]: For 57286/57286 co-relation queries the response was YES. [2024-06-27 19:21:01,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5612 conditions, 882 events. 500/882 cut-off events. For 57286/57286 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4055 event pairs, 76 based on Foata normal form. 2/883 useless extension candidates. Maximal degree in co-relation 5518. Up to 711 conditions per place. [2024-06-27 19:21:01,304 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 140 selfloop transitions, 39 changer transitions 0/181 dead transitions. [2024-06-27 19:21:01,304 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 181 transitions, 1913 flow [2024-06-27 19:21:01,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:01,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:01,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 19:21:01,305 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-27 19:21:01,305 INFO L175 Difference]: Start difference. First operand has 189 places, 160 transitions, 1461 flow. Second operand 10 states and 111 transitions. [2024-06-27 19:21:01,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 181 transitions, 1913 flow [2024-06-27 19:21:01,397 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 181 transitions, 1798 flow, removed 26 selfloop flow, removed 6 redundant places. [2024-06-27 19:21:01,399 INFO L231 Difference]: Finished difference. Result has 193 places, 162 transitions, 1481 flow [2024-06-27 19:21:01,399 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1352, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1481, PETRI_PLACES=193, PETRI_TRANSITIONS=162} [2024-06-27 19:21:01,399 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2024-06-27 19:21:01,399 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 162 transitions, 1481 flow [2024-06-27 19:21:01,400 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) [2024-06-27 19:21:01,400 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:01,400 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:01,400 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 19:21:01,400 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)] === [2024-06-27 19:21:01,400 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:01,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1605569776, now seen corresponding path program 7 times [2024-06-27 19:21:01,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:01,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145066873] [2024-06-27 19:21:01,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:01,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:01,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:03,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:03,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:03,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145066873] [2024-06-27 19:21:03,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145066873] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:03,472 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:03,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:03,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485730165] [2024-06-27 19:21:03,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:03,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:03,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:03,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:03,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:03,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:03,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 162 transitions, 1481 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) [2024-06-27 19:21:03,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:03,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:03,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:04,146 INFO L124 PetriNetUnfolderBase]: 504/890 cut-off events. [2024-06-27 19:21:04,147 INFO L125 PetriNetUnfolderBase]: For 59023/59023 co-relation queries the response was YES. [2024-06-27 19:21:04,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5691 conditions, 890 events. 504/890 cut-off events. For 59023/59023 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4117 event pairs, 78 based on Foata normal form. 2/891 useless extension candidates. Maximal degree in co-relation 5595. Up to 764 conditions per place. [2024-06-27 19:21:04,153 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 150 selfloop transitions, 27 changer transitions 0/179 dead transitions. [2024-06-27 19:21:04,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 179 transitions, 1899 flow [2024-06-27 19:21:04,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:21:04,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:21:04,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 19:21:04,154 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-27 19:21:04,154 INFO L175 Difference]: Start difference. First operand has 193 places, 162 transitions, 1481 flow. Second operand 9 states and 98 transitions. [2024-06-27 19:21:04,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 179 transitions, 1899 flow [2024-06-27 19:21:04,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 179 transitions, 1790 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:04,256 INFO L231 Difference]: Finished difference. Result has 194 places, 163 transitions, 1458 flow [2024-06-27 19:21:04,256 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=185, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1458, PETRI_PLACES=194, PETRI_TRANSITIONS=163} [2024-06-27 19:21:04,256 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-06-27 19:21:04,256 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 163 transitions, 1458 flow [2024-06-27 19:21:04,256 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) [2024-06-27 19:21:04,257 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:04,257 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:04,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 19:21:04,257 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)] === [2024-06-27 19:21:04,257 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:04,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1018901374, now seen corresponding path program 5 times [2024-06-27 19:21:04,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:04,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664722474] [2024-06-27 19:21:04,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:04,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:04,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:06,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:06,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:06,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664722474] [2024-06-27 19:21:06,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664722474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:06,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:06,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:06,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246586537] [2024-06-27 19:21:06,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:06,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:06,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:06,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:06,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:06,720 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:06,720 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 163 transitions, 1458 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) [2024-06-27 19:21:06,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:06,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:06,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:07,282 INFO L124 PetriNetUnfolderBase]: 500/884 cut-off events. [2024-06-27 19:21:07,283 INFO L125 PetriNetUnfolderBase]: For 56479/56479 co-relation queries the response was YES. [2024-06-27 19:21:07,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5475 conditions, 884 events. 500/884 cut-off events. For 56479/56479 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4093 event pairs, 80 based on Foata normal form. 2/885 useless extension candidates. Maximal degree in co-relation 5378. Up to 748 conditions per place. [2024-06-27 19:21:07,290 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 148 selfloop transitions, 31 changer transitions 0/181 dead transitions. [2024-06-27 19:21:07,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 181 transitions, 1858 flow [2024-06-27 19:21:07,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:07,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:07,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 19:21:07,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-27 19:21:07,291 INFO L175 Difference]: Start difference. First operand has 194 places, 163 transitions, 1458 flow. Second operand 10 states and 109 transitions. [2024-06-27 19:21:07,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 181 transitions, 1858 flow [2024-06-27 19:21:07,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 181 transitions, 1758 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-06-27 19:21:07,379 INFO L231 Difference]: Finished difference. Result has 197 places, 163 transitions, 1425 flow [2024-06-27 19:21:07,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1358, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1425, PETRI_PLACES=197, PETRI_TRANSITIONS=163} [2024-06-27 19:21:07,379 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-27 19:21:07,379 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 163 transitions, 1425 flow [2024-06-27 19:21:07,379 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) [2024-06-27 19:21:07,379 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:07,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:07,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 19:21:07,380 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)] === [2024-06-27 19:21:07,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:07,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1331598580, now seen corresponding path program 1 times [2024-06-27 19:21:07,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:07,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973476074] [2024-06-27 19:21:07,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:07,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:07,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:10,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:10,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:10,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973476074] [2024-06-27 19:21:10,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973476074] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:10,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:10,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:10,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742873716] [2024-06-27 19:21:10,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:10,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:10,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:10,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:10,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:10,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:10,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 163 transitions, 1425 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) [2024-06-27 19:21:10,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:10,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:10,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:11,200 INFO L124 PetriNetUnfolderBase]: 508/902 cut-off events. [2024-06-27 19:21:11,200 INFO L125 PetriNetUnfolderBase]: For 62629/62632 co-relation queries the response was YES. [2024-06-27 19:21:11,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5544 conditions, 902 events. 508/902 cut-off events. For 62629/62632 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4202 event pairs, 105 based on Foata normal form. 6/905 useless extension candidates. Maximal degree in co-relation 5446. Up to 808 conditions per place. [2024-06-27 19:21:11,207 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 161 selfloop transitions, 22 changer transitions 0/185 dead transitions. [2024-06-27 19:21:11,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 185 transitions, 1899 flow [2024-06-27 19:21:11,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:11,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:11,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 19:21:11,209 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-27 19:21:11,209 INFO L175 Difference]: Start difference. First operand has 197 places, 163 transitions, 1425 flow. Second operand 11 states and 114 transitions. [2024-06-27 19:21:11,209 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 185 transitions, 1899 flow [2024-06-27 19:21:11,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 185 transitions, 1808 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 19:21:11,299 INFO L231 Difference]: Finished difference. Result has 199 places, 164 transitions, 1420 flow [2024-06-27 19:21:11,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1334, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1420, PETRI_PLACES=199, PETRI_TRANSITIONS=164} [2024-06-27 19:21:11,300 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-27 19:21:11,300 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 164 transitions, 1420 flow [2024-06-27 19:21:11,300 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) [2024-06-27 19:21:11,300 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:11,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:11,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 19:21:11,300 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)] === [2024-06-27 19:21:11,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:11,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1257622836, now seen corresponding path program 8 times [2024-06-27 19:21:11,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:11,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653092731] [2024-06-27 19:21:11,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:11,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:14,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:14,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:14,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653092731] [2024-06-27 19:21:14,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653092731] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:14,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:14,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:21:14,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032504011] [2024-06-27 19:21:14,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:14,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:21:14,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:14,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:21:14,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:21:14,142 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:14,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 164 transitions, 1420 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) [2024-06-27 19:21:14,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:14,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:14,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:14,721 INFO L124 PetriNetUnfolderBase]: 512/910 cut-off events. [2024-06-27 19:21:14,721 INFO L125 PetriNetUnfolderBase]: For 60345/60348 co-relation queries the response was YES. [2024-06-27 19:21:14,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5588 conditions, 910 events. 512/910 cut-off events. For 60345/60348 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4227 event pairs, 68 based on Foata normal form. 2/906 useless extension candidates. Maximal degree in co-relation 5489. Up to 695 conditions per place. [2024-06-27 19:21:14,728 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 131 selfloop transitions, 48 changer transitions 0/181 dead transitions. [2024-06-27 19:21:14,728 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 207 places, 181 transitions, 1846 flow [2024-06-27 19:21:14,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:21:14,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:21:14,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 102 transitions. [2024-06-27 19:21:14,729 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-27 19:21:14,729 INFO L175 Difference]: Start difference. First operand has 199 places, 164 transitions, 1420 flow. Second operand 9 states and 102 transitions. [2024-06-27 19:21:14,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 207 places, 181 transitions, 1846 flow [2024-06-27 19:21:14,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 181 transitions, 1770 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 19:21:14,837 INFO L231 Difference]: Finished difference. Result has 199 places, 165 transitions, 1474 flow [2024-06-27 19:21:14,837 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1344, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1474, PETRI_PLACES=199, PETRI_TRANSITIONS=165} [2024-06-27 19:21:14,837 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 168 predicate places. [2024-06-27 19:21:14,837 INFO L495 AbstractCegarLoop]: Abstraction has has 199 places, 165 transitions, 1474 flow [2024-06-27 19:21:14,837 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) [2024-06-27 19:21:14,838 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:14,838 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:14,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 19:21:14,838 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)] === [2024-06-27 19:21:14,838 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:14,838 INFO L85 PathProgramCache]: Analyzing trace with hash -676699956, now seen corresponding path program 2 times [2024-06-27 19:21:14,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:14,838 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121593560] [2024-06-27 19:21:14,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:14,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:14,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:17,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:17,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:17,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121593560] [2024-06-27 19:21:17,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121593560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:17,658 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:17,658 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:17,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497966931] [2024-06-27 19:21:17,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:17,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:17,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:17,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:17,659 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:17,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:17,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 199 places, 165 transitions, 1474 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) [2024-06-27 19:21:17,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:17,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:17,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:18,260 INFO L124 PetriNetUnfolderBase]: 534/950 cut-off events. [2024-06-27 19:21:18,260 INFO L125 PetriNetUnfolderBase]: For 76795/76795 co-relation queries the response was YES. [2024-06-27 19:21:18,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6173 conditions, 950 events. 534/950 cut-off events. For 76795/76795 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4503 event pairs, 127 based on Foata normal form. 4/953 useless extension candidates. Maximal degree in co-relation 6073. Up to 854 conditions per place. [2024-06-27 19:21:18,268 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 161 selfloop transitions, 19 changer transitions 0/182 dead transitions. [2024-06-27 19:21:18,268 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 182 transitions, 2084 flow [2024-06-27 19:21:18,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:18,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:18,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-06-27 19:21:18,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31875 [2024-06-27 19:21:18,269 INFO L175 Difference]: Start difference. First operand has 199 places, 165 transitions, 1474 flow. Second operand 10 states and 102 transitions. [2024-06-27 19:21:18,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 182 transitions, 2084 flow [2024-06-27 19:21:18,372 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 182 transitions, 1964 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 19:21:18,374 INFO L231 Difference]: Finished difference. Result has 202 places, 167 transitions, 1474 flow [2024-06-27 19:21:18,375 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1354, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1474, PETRI_PLACES=202, PETRI_TRANSITIONS=167} [2024-06-27 19:21:18,375 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-27 19:21:18,375 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 167 transitions, 1474 flow [2024-06-27 19:21:18,375 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) [2024-06-27 19:21:18,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:18,376 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:18,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 19:21:18,376 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)] === [2024-06-27 19:21:18,376 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:18,376 INFO L85 PathProgramCache]: Analyzing trace with hash 1953698614, now seen corresponding path program 9 times [2024-06-27 19:21:18,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:18,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778007963] [2024-06-27 19:21:18,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:18,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:18,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:20,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:20,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:20,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778007963] [2024-06-27 19:21:20,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778007963] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:20,723 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:20,723 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:21:20,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1271050968] [2024-06-27 19:21:20,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:20,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:21:20,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:20,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:21:20,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:21:20,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:20,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 167 transitions, 1474 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) [2024-06-27 19:21:20,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:20,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:20,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:21,282 INFO L124 PetriNetUnfolderBase]: 538/960 cut-off events. [2024-06-27 19:21:21,282 INFO L125 PetriNetUnfolderBase]: For 74316/74319 co-relation queries the response was YES. [2024-06-27 19:21:21,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6150 conditions, 960 events. 538/960 cut-off events. For 74316/74319 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4558 event pairs, 90 based on Foata normal form. 2/956 useless extension candidates. Maximal degree in co-relation 6049. Up to 803 conditions per place. [2024-06-27 19:21:21,290 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 149 selfloop transitions, 34 changer transitions 0/185 dead transitions. [2024-06-27 19:21:21,290 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 185 transitions, 1912 flow [2024-06-27 19:21:21,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:21:21,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:21:21,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-06-27 19:21:21,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3576388888888889 [2024-06-27 19:21:21,291 INFO L175 Difference]: Start difference. First operand has 202 places, 167 transitions, 1474 flow. Second operand 9 states and 103 transitions. [2024-06-27 19:21:21,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 185 transitions, 1912 flow [2024-06-27 19:21:21,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 185 transitions, 1849 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 19:21:21,418 INFO L231 Difference]: Finished difference. Result has 205 places, 168 transitions, 1515 flow [2024-06-27 19:21:21,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1411, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1515, PETRI_PLACES=205, PETRI_TRANSITIONS=168} [2024-06-27 19:21:21,419 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-27 19:21:21,419 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 168 transitions, 1515 flow [2024-06-27 19:21:21,419 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) [2024-06-27 19:21:21,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:21,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:21,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 19:21:21,420 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)] === [2024-06-27 19:21:21,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:21,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1257407634, now seen corresponding path program 6 times [2024-06-27 19:21:21,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:21,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1881300834] [2024-06-27 19:21:21,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:21,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:24,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:24,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:24,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1881300834] [2024-06-27 19:21:24,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1881300834] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:24,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:24,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:24,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167677543] [2024-06-27 19:21:24,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:24,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:24,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:24,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:24,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:24,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:24,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 168 transitions, 1515 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) [2024-06-27 19:21:24,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:24,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:24,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:25,087 INFO L124 PetriNetUnfolderBase]: 554/986 cut-off events. [2024-06-27 19:21:25,087 INFO L125 PetriNetUnfolderBase]: For 81191/81194 co-relation queries the response was YES. [2024-06-27 19:21:25,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6532 conditions, 986 events. 554/986 cut-off events. For 81191/81194 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4712 event pairs, 78 based on Foata normal form. 2/982 useless extension candidates. Maximal degree in co-relation 6429. Up to 726 conditions per place. [2024-06-27 19:21:25,095 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 135 selfloop transitions, 57 changer transitions 0/194 dead transitions. [2024-06-27 19:21:25,095 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 214 places, 194 transitions, 2191 flow [2024-06-27 19:21:25,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:25,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:25,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 119 transitions. [2024-06-27 19:21:25,096 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.371875 [2024-06-27 19:21:25,096 INFO L175 Difference]: Start difference. First operand has 205 places, 168 transitions, 1515 flow. Second operand 10 states and 119 transitions. [2024-06-27 19:21:25,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 214 places, 194 transitions, 2191 flow [2024-06-27 19:21:25,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 194 transitions, 2097 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 19:21:25,231 INFO L231 Difference]: Finished difference. Result has 208 places, 172 transitions, 1640 flow [2024-06-27 19:21:25,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1421, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1640, PETRI_PLACES=208, PETRI_TRANSITIONS=172} [2024-06-27 19:21:25,232 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-27 19:21:25,232 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 172 transitions, 1640 flow [2024-06-27 19:21:25,232 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) [2024-06-27 19:21:25,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:25,233 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:25,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 19:21:25,233 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)] === [2024-06-27 19:21:25,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:25,233 INFO L85 PathProgramCache]: Analyzing trace with hash 332469754, now seen corresponding path program 7 times [2024-06-27 19:21:25,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:25,234 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287031450] [2024-06-27 19:21:25,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:25,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:25,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:27,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:27,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:27,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287031450] [2024-06-27 19:21:27,968 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287031450] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:27,968 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:27,968 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:27,968 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583739836] [2024-06-27 19:21:27,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:27,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:27,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:27,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:27,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:28,126 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:28,127 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 172 transitions, 1640 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) [2024-06-27 19:21:28,127 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:28,127 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:28,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:28,800 INFO L124 PetriNetUnfolderBase]: 570/1012 cut-off events. [2024-06-27 19:21:28,800 INFO L125 PetriNetUnfolderBase]: For 89041/89044 co-relation queries the response was YES. [2024-06-27 19:21:28,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6976 conditions, 1012 events. 570/1012 cut-off events. For 89041/89044 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4862 event pairs, 93 based on Foata normal form. 2/1008 useless extension candidates. Maximal degree in co-relation 6872. Up to 798 conditions per place. [2024-06-27 19:21:28,808 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 151 selfloop transitions, 45 changer transitions 0/198 dead transitions. [2024-06-27 19:21:28,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 198 transitions, 2334 flow [2024-06-27 19:21:28,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:28,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:28,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 118 transitions. [2024-06-27 19:21:28,809 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36875 [2024-06-27 19:21:28,809 INFO L175 Difference]: Start difference. First operand has 208 places, 172 transitions, 1640 flow. Second operand 10 states and 118 transitions. [2024-06-27 19:21:28,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 198 transitions, 2334 flow [2024-06-27 19:21:28,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 198 transitions, 2209 flow, removed 27 selfloop flow, removed 6 redundant places. [2024-06-27 19:21:28,979 INFO L231 Difference]: Finished difference. Result has 212 places, 176 transitions, 1718 flow [2024-06-27 19:21:28,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1515, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1718, PETRI_PLACES=212, PETRI_TRANSITIONS=176} [2024-06-27 19:21:28,980 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-27 19:21:28,980 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 176 transitions, 1718 flow [2024-06-27 19:21:28,980 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) [2024-06-27 19:21:28,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:28,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:28,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 19:21:28,980 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)] === [2024-06-27 19:21:28,981 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:28,981 INFO L85 PathProgramCache]: Analyzing trace with hash -1257415074, now seen corresponding path program 8 times [2024-06-27 19:21:28,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:28,981 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703110714] [2024-06-27 19:21:28,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:28,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:31,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:31,732 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:31,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703110714] [2024-06-27 19:21:31,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703110714] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:31,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:31,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:21:31,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027152069] [2024-06-27 19:21:31,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:31,733 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:21:31,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:31,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:21:31,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:21:31,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:31,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 176 transitions, 1718 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) [2024-06-27 19:21:31,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:31,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:31,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:32,543 INFO L124 PetriNetUnfolderBase]: 576/1022 cut-off events. [2024-06-27 19:21:32,543 INFO L125 PetriNetUnfolderBase]: For 91349/91352 co-relation queries the response was YES. [2024-06-27 19:21:32,548 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7106 conditions, 1022 events. 576/1022 cut-off events. For 91349/91352 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4939 event pairs, 81 based on Foata normal form. 2/1018 useless extension candidates. Maximal degree in co-relation 7000. Up to 783 conditions per place. [2024-06-27 19:21:32,550 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 142 selfloop transitions, 54 changer transitions 0/198 dead transitions. [2024-06-27 19:21:32,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 198 transitions, 2202 flow [2024-06-27 19:21:32,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:32,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:32,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 116 transitions. [2024-06-27 19:21:32,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3625 [2024-06-27 19:21:32,552 INFO L175 Difference]: Start difference. First operand has 212 places, 176 transitions, 1718 flow. Second operand 10 states and 116 transitions. [2024-06-27 19:21:32,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 198 transitions, 2202 flow [2024-06-27 19:21:32,723 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 198 transitions, 2086 flow, removed 31 selfloop flow, removed 6 redundant places. [2024-06-27 19:21:32,725 INFO L231 Difference]: Finished difference. Result has 216 places, 178 transitions, 1761 flow [2024-06-27 19:21:32,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1602, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1761, PETRI_PLACES=216, PETRI_TRANSITIONS=178} [2024-06-27 19:21:32,725 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-27 19:21:32,725 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 178 transitions, 1761 flow [2024-06-27 19:21:32,726 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) [2024-06-27 19:21:32,726 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:32,726 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:32,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 19:21:32,726 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)] === [2024-06-27 19:21:32,726 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:32,726 INFO L85 PathProgramCache]: Analyzing trace with hash -1962652296, now seen corresponding path program 3 times [2024-06-27 19:21:32,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:32,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516543013] [2024-06-27 19:21:32,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:32,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:35,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:35,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:35,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516543013] [2024-06-27 19:21:35,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516543013] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:35,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:35,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:35,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367055217] [2024-06-27 19:21:35,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:35,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:35,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:35,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:35,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:35,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:35,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 178 transitions, 1761 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) [2024-06-27 19:21:35,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:35,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:35,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:36,266 INFO L124 PetriNetUnfolderBase]: 584/1036 cut-off events. [2024-06-27 19:21:36,267 INFO L125 PetriNetUnfolderBase]: For 99101/99101 co-relation queries the response was YES. [2024-06-27 19:21:36,273 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7267 conditions, 1036 events. 584/1036 cut-off events. For 99101/99101 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5059 event pairs, 141 based on Foata normal form. 4/1039 useless extension candidates. Maximal degree in co-relation 7159. Up to 974 conditions per place. [2024-06-27 19:21:36,276 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 172 selfloop transitions, 20 changer transitions 0/194 dead transitions. [2024-06-27 19:21:36,276 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 194 transitions, 2219 flow [2024-06-27 19:21:36,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:36,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:36,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2024-06-27 19:21:36,277 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-27 19:21:36,278 INFO L175 Difference]: Start difference. First operand has 216 places, 178 transitions, 1761 flow. Second operand 11 states and 110 transitions. [2024-06-27 19:21:36,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 226 places, 194 transitions, 2219 flow [2024-06-27 19:21:36,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 194 transitions, 2080 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:36,465 INFO L231 Difference]: Finished difference. Result has 219 places, 179 transitions, 1702 flow [2024-06-27 19:21:36,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1622, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1702, PETRI_PLACES=219, PETRI_TRANSITIONS=179} [2024-06-27 19:21:36,466 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-27 19:21:36,466 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 179 transitions, 1702 flow [2024-06-27 19:21:36,466 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) [2024-06-27 19:21:36,466 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:36,466 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:36,466 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 19:21:36,466 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)] === [2024-06-27 19:21:36,467 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:36,467 INFO L85 PathProgramCache]: Analyzing trace with hash -120797348, now seen corresponding path program 10 times [2024-06-27 19:21:36,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:36,467 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892274839] [2024-06-27 19:21:36,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:36,467 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:36,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:38,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:38,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:38,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892274839] [2024-06-27 19:21:38,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892274839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:38,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:38,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:21:38,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483654383] [2024-06-27 19:21:38,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:38,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:21:38,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:38,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:21:38,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:21:39,081 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:39,081 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 179 transitions, 1702 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) [2024-06-27 19:21:39,081 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:39,081 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:39,082 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:39,587 INFO L124 PetriNetUnfolderBase]: 588/1046 cut-off events. [2024-06-27 19:21:39,587 INFO L125 PetriNetUnfolderBase]: For 96212/96215 co-relation queries the response was YES. [2024-06-27 19:21:39,593 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7236 conditions, 1046 events. 588/1046 cut-off events. For 96212/96215 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 5083 event pairs, 106 based on Foata normal form. 2/1042 useless extension candidates. Maximal degree in co-relation 7127. Up to 903 conditions per place. [2024-06-27 19:21:39,596 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 162 selfloop transitions, 31 changer transitions 0/195 dead transitions. [2024-06-27 19:21:39,596 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 195 transitions, 2156 flow [2024-06-27 19:21:39,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:21:39,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:21:39,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-06-27 19:21:39,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:21:39,597 INFO L175 Difference]: Start difference. First operand has 219 places, 179 transitions, 1702 flow. Second operand 9 states and 99 transitions. [2024-06-27 19:21:39,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 195 transitions, 2156 flow [2024-06-27 19:21:39,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 195 transitions, 2088 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 19:21:39,770 INFO L231 Difference]: Finished difference. Result has 219 places, 180 transitions, 1734 flow [2024-06-27 19:21:39,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1634, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1734, PETRI_PLACES=219, PETRI_TRANSITIONS=180} [2024-06-27 19:21:39,771 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-27 19:21:39,771 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 180 transitions, 1734 flow [2024-06-27 19:21:39,771 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) [2024-06-27 19:21:39,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:39,771 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:39,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 19:21:39,772 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)] === [2024-06-27 19:21:39,772 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:39,772 INFO L85 PathProgramCache]: Analyzing trace with hash -688137716, now seen corresponding path program 9 times [2024-06-27 19:21:39,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:39,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520094491] [2024-06-27 19:21:39,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:39,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:39,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:42,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:42,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:42,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520094491] [2024-06-27 19:21:42,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520094491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:42,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:42,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:21:42,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118693969] [2024-06-27 19:21:42,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:42,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:21:42,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:42,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:21:42,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:21:42,586 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:42,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 180 transitions, 1734 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) [2024-06-27 19:21:42,587 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:42,587 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:42,587 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:43,158 INFO L124 PetriNetUnfolderBase]: 610/1080 cut-off events. [2024-06-27 19:21:43,158 INFO L125 PetriNetUnfolderBase]: For 110772/110772 co-relation queries the response was YES. [2024-06-27 19:21:43,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7688 conditions, 1080 events. 610/1080 cut-off events. For 110772/110772 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5310 event pairs, 146 based on Foata normal form. 4/1083 useless extension candidates. Maximal degree in co-relation 7578. Up to 1009 conditions per place. [2024-06-27 19:21:43,167 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 174 selfloop transitions, 23 changer transitions 0/199 dead transitions. [2024-06-27 19:21:43,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 199 transitions, 2428 flow [2024-06-27 19:21:43,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:43,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:43,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 19:21:43,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-27 19:21:43,168 INFO L175 Difference]: Start difference. First operand has 219 places, 180 transitions, 1734 flow. Second operand 10 states and 106 transitions. [2024-06-27 19:21:43,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 199 transitions, 2428 flow [2024-06-27 19:21:43,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 199 transitions, 2338 flow, removed 15 selfloop flow, removed 7 redundant places. [2024-06-27 19:21:43,390 INFO L231 Difference]: Finished difference. Result has 222 places, 185 transitions, 1819 flow [2024-06-27 19:21:43,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1644, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1819, PETRI_PLACES=222, PETRI_TRANSITIONS=185} [2024-06-27 19:21:43,391 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-06-27 19:21:43,391 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 185 transitions, 1819 flow [2024-06-27 19:21:43,391 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) [2024-06-27 19:21:43,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:43,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:43,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 19:21:43,391 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)] === [2024-06-27 19:21:43,392 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:43,392 INFO L85 PathProgramCache]: Analyzing trace with hash -120801068, now seen corresponding path program 11 times [2024-06-27 19:21:43,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:43,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468275460] [2024-06-27 19:21:43,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:43,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:43,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:45,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:45,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:45,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468275460] [2024-06-27 19:21:45,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468275460] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:45,671 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:45,671 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:45,671 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918332737] [2024-06-27 19:21:45,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:45,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:45,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:45,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:45,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:45,811 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:45,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 185 transitions, 1819 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) [2024-06-27 19:21:45,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:45,811 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:45,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:46,312 INFO L124 PetriNetUnfolderBase]: 607/1077 cut-off events. [2024-06-27 19:21:46,312 INFO L125 PetriNetUnfolderBase]: For 101767/101770 co-relation queries the response was YES. [2024-06-27 19:21:46,319 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7500 conditions, 1077 events. 607/1077 cut-off events. For 101767/101770 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5276 event pairs, 104 based on Foata normal form. 2/1073 useless extension candidates. Maximal degree in co-relation 7389. Up to 934 conditions per place. [2024-06-27 19:21:46,321 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 168 selfloop transitions, 30 changer transitions 0/200 dead transitions. [2024-06-27 19:21:46,321 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 200 transitions, 2251 flow [2024-06-27 19:21:46,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 19:21:46,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 19:21:46,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 98 transitions. [2024-06-27 19:21:46,322 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3402777777777778 [2024-06-27 19:21:46,322 INFO L175 Difference]: Start difference. First operand has 222 places, 185 transitions, 1819 flow. Second operand 9 states and 98 transitions. [2024-06-27 19:21:46,323 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 200 transitions, 2251 flow [2024-06-27 19:21:46,531 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 200 transitions, 2155 flow, removed 38 selfloop flow, removed 6 redundant places. [2024-06-27 19:21:46,533 INFO L231 Difference]: Finished difference. Result has 225 places, 185 transitions, 1787 flow [2024-06-27 19:21:46,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1723, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1787, PETRI_PLACES=225, PETRI_TRANSITIONS=185} [2024-06-27 19:21:46,534 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-27 19:21:46,534 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 185 transitions, 1787 flow [2024-06-27 19:21:46,534 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) [2024-06-27 19:21:46,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:46,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:46,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 19:21:46,535 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)] === [2024-06-27 19:21:46,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:46,535 INFO L85 PathProgramCache]: Analyzing trace with hash -688127796, now seen corresponding path program 4 times [2024-06-27 19:21:46,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:46,535 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924501045] [2024-06-27 19:21:46,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:46,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:46,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:49,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:49,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:49,878 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924501045] [2024-06-27 19:21:49,878 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924501045] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:49,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:49,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:49,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848091882] [2024-06-27 19:21:49,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:49,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:49,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:49,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:49,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:49,986 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:49,988 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 185 transitions, 1787 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) [2024-06-27 19:21:49,988 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:49,988 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:49,988 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:50,675 INFO L124 PetriNetUnfolderBase]: 601/1065 cut-off events. [2024-06-27 19:21:50,675 INFO L125 PetriNetUnfolderBase]: For 97546/97546 co-relation queries the response was YES. [2024-06-27 19:21:50,680 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7097 conditions, 1065 events. 601/1065 cut-off events. For 97546/97546 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5209 event pairs, 137 based on Foata normal form. 4/1068 useless extension candidates. Maximal degree in co-relation 6984. Up to 965 conditions per place. [2024-06-27 19:21:50,682 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 175 selfloop transitions, 22 changer transitions 0/199 dead transitions. [2024-06-27 19:21:50,682 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 199 transitions, 2217 flow [2024-06-27 19:21:50,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:21:50,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:21:50,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-06-27 19:21:50,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3068181818181818 [2024-06-27 19:21:50,684 INFO L175 Difference]: Start difference. First operand has 225 places, 185 transitions, 1787 flow. Second operand 11 states and 108 transitions. [2024-06-27 19:21:50,684 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 199 transitions, 2217 flow [2024-06-27 19:21:50,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 199 transitions, 2062 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:50,901 INFO L231 Difference]: Finished difference. Result has 228 places, 185 transitions, 1684 flow [2024-06-27 19:21:50,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1632, PETRI_DIFFERENCE_MINUEND_PLACES=217, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1684, PETRI_PLACES=228, PETRI_TRANSITIONS=185} [2024-06-27 19:21:50,902 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 197 predicate places. [2024-06-27 19:21:50,902 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 185 transitions, 1684 flow [2024-06-27 19:21:50,902 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) [2024-06-27 19:21:50,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:50,902 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:50,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 19:21:50,902 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)] === [2024-06-27 19:21:50,902 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:50,902 INFO L85 PathProgramCache]: Analyzing trace with hash 332462314, now seen corresponding path program 10 times [2024-06-27 19:21:50,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:50,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [176834474] [2024-06-27 19:21:50,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:50,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:53,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:53,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:53,510 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [176834474] [2024-06-27 19:21:53,510 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [176834474] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:53,510 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:53,510 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:21:53,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531719155] [2024-06-27 19:21:53,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:53,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:21:53,511 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:53,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:21:53,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:21:53,611 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:53,611 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 185 transitions, 1684 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) [2024-06-27 19:21:53,611 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:53,611 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:53,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:54,263 INFO L124 PetriNetUnfolderBase]: 607/1077 cut-off events. [2024-06-27 19:21:54,263 INFO L125 PetriNetUnfolderBase]: For 93168/93171 co-relation queries the response was YES. [2024-06-27 19:21:54,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7026 conditions, 1077 events. 607/1077 cut-off events. For 93168/93171 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5296 event pairs, 98 based on Foata normal form. 2/1073 useless extension candidates. Maximal degree in co-relation 6912. Up to 888 conditions per place. [2024-06-27 19:21:54,272 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 163 selfloop transitions, 42 changer transitions 0/207 dead transitions. [2024-06-27 19:21:54,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 207 transitions, 2186 flow [2024-06-27 19:21:54,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:54,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:54,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 19:21:54,273 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 19:21:54,273 INFO L175 Difference]: Start difference. First operand has 228 places, 185 transitions, 1684 flow. Second operand 10 states and 115 transitions. [2024-06-27 19:21:54,274 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 207 transitions, 2186 flow [2024-06-27 19:21:54,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 207 transitions, 2072 flow, removed 6 selfloop flow, removed 15 redundant places. [2024-06-27 19:21:54,480 INFO L231 Difference]: Finished difference. Result has 223 places, 187 transitions, 1705 flow [2024-06-27 19:21:54,480 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1570, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1705, PETRI_PLACES=223, PETRI_TRANSITIONS=187} [2024-06-27 19:21:54,480 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-27 19:21:54,480 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 187 transitions, 1705 flow [2024-06-27 19:21:54,481 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) [2024-06-27 19:21:54,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:54,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:54,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 19:21:54,481 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)] === [2024-06-27 19:21:54,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:54,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1002096416, now seen corresponding path program 11 times [2024-06-27 19:21:54,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:54,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2096560443] [2024-06-27 19:21:54,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:54,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:21:57,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:21:57,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:21:57,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2096560443] [2024-06-27 19:21:57,309 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2096560443] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:21:57,309 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:21:57,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:21:57,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743301664] [2024-06-27 19:21:57,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:21:57,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:21:57,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:21:57,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:21:57,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:21:57,421 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:21:57,421 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 187 transitions, 1705 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) [2024-06-27 19:21:57,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:21:57,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:21:57,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:21:58,270 INFO L124 PetriNetUnfolderBase]: 613/1087 cut-off events. [2024-06-27 19:21:58,270 INFO L125 PetriNetUnfolderBase]: For 88953/88956 co-relation queries the response was YES. [2024-06-27 19:21:58,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6959 conditions, 1087 events. 613/1087 cut-off events. For 88953/88956 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 5333 event pairs, 53 based on Foata normal form. 2/1083 useless extension candidates. Maximal degree in co-relation 6849. Up to 457 conditions per place. [2024-06-27 19:21:58,278 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 121 selfloop transitions, 93 changer transitions 0/216 dead transitions. [2024-06-27 19:21:58,279 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 216 transitions, 2653 flow [2024-06-27 19:21:58,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:21:58,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:21:58,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 125 transitions. [2024-06-27 19:21:58,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.390625 [2024-06-27 19:21:58,280 INFO L175 Difference]: Start difference. First operand has 223 places, 187 transitions, 1705 flow. Second operand 10 states and 125 transitions. [2024-06-27 19:21:58,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 216 transitions, 2653 flow [2024-06-27 19:21:58,474 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 216 transitions, 2538 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 19:21:58,477 INFO L231 Difference]: Finished difference. Result has 226 places, 193 transitions, 1996 flow [2024-06-27 19:21:58,477 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1996, PETRI_PLACES=226, PETRI_TRANSITIONS=193} [2024-06-27 19:21:58,477 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-27 19:21:58,477 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 193 transitions, 1996 flow [2024-06-27 19:21:58,477 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) [2024-06-27 19:21:58,477 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:21:58,478 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:21:58,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 19:21:58,478 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)] === [2024-06-27 19:21:58,478 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:21:58,478 INFO L85 PathProgramCache]: Analyzing trace with hash -115284866, now seen corresponding path program 12 times [2024-06-27 19:21:58,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:21:58,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859671595] [2024-06-27 19:21:58,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:21:58,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:21:58,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:01,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:01,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:01,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [859671595] [2024-06-27 19:22:01,033 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [859671595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:01,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:01,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:22:01,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272039912] [2024-06-27 19:22:01,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:01,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:22:01,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:01,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:22:01,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:22:01,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:01,151 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 193 transitions, 1996 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) [2024-06-27 19:22:01,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:01,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:01,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:01,752 INFO L124 PetriNetUnfolderBase]: 619/1097 cut-off events. [2024-06-27 19:22:01,752 INFO L125 PetriNetUnfolderBase]: For 91682/91685 co-relation queries the response was YES. [2024-06-27 19:22:01,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7294 conditions, 1097 events. 619/1097 cut-off events. For 91682/91685 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5425 event pairs, 95 based on Foata normal form. 2/1093 useless extension candidates. Maximal degree in co-relation 7182. Up to 930 conditions per place. [2024-06-27 19:22:01,761 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 175 selfloop transitions, 37 changer transitions 0/214 dead transitions. [2024-06-27 19:22:01,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 214 transitions, 2515 flow [2024-06-27 19:22:01,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:01,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:01,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 113 transitions. [2024-06-27 19:22:01,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.353125 [2024-06-27 19:22:01,762 INFO L175 Difference]: Start difference. First operand has 226 places, 193 transitions, 1996 flow. Second operand 10 states and 113 transitions. [2024-06-27 19:22:01,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 214 transitions, 2515 flow [2024-06-27 19:22:01,972 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 214 transitions, 2362 flow, removed 40 selfloop flow, removed 5 redundant places. [2024-06-27 19:22:01,975 INFO L231 Difference]: Finished difference. Result has 231 places, 195 transitions, 1975 flow [2024-06-27 19:22:01,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1843, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1975, PETRI_PLACES=231, PETRI_TRANSITIONS=195} [2024-06-27 19:22:01,976 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-27 19:22:01,976 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 195 transitions, 1975 flow [2024-06-27 19:22:01,976 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) [2024-06-27 19:22:01,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:01,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:01,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 19:22:01,977 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)] === [2024-06-27 19:22:01,977 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:01,977 INFO L85 PathProgramCache]: Analyzing trace with hash -936036118, now seen corresponding path program 13 times [2024-06-27 19:22:01,977 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:01,977 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153156372] [2024-06-27 19:22:01,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:01,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:01,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:04,942 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:04,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:04,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153156372] [2024-06-27 19:22:04,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153156372] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:04,943 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:04,943 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:04,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [959383596] [2024-06-27 19:22:04,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:04,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:04,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:04,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:04,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:05,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:05,054 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 195 transitions, 1975 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) [2024-06-27 19:22:05,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:05,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:05,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:05,737 INFO L124 PetriNetUnfolderBase]: 615/1091 cut-off events. [2024-06-27 19:22:05,737 INFO L125 PetriNetUnfolderBase]: For 86772/86775 co-relation queries the response was YES. [2024-06-27 19:22:05,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7041 conditions, 1091 events. 615/1091 cut-off events. For 86772/86775 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5385 event pairs, 67 based on Foata normal form. 2/1087 useless extension candidates. Maximal degree in co-relation 6927. Up to 760 conditions per place. [2024-06-27 19:22:05,745 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 137 selfloop transitions, 75 changer transitions 0/214 dead transitions. [2024-06-27 19:22:05,745 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 214 transitions, 2447 flow [2024-06-27 19:22:05,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:05,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:05,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 19:22:05,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 19:22:05,747 INFO L175 Difference]: Start difference. First operand has 231 places, 195 transitions, 1975 flow. Second operand 10 states and 115 transitions. [2024-06-27 19:22:05,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 214 transitions, 2447 flow [2024-06-27 19:22:05,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 214 transitions, 2304 flow, removed 36 selfloop flow, removed 8 redundant places. [2024-06-27 19:22:05,972 INFO L231 Difference]: Finished difference. Result has 233 places, 195 transitions, 1987 flow [2024-06-27 19:22:05,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=223, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1987, PETRI_PLACES=233, PETRI_TRANSITIONS=195} [2024-06-27 19:22:05,973 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 202 predicate places. [2024-06-27 19:22:05,973 INFO L495 AbstractCegarLoop]: Abstraction has has 233 places, 195 transitions, 1987 flow [2024-06-27 19:22:05,973 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) [2024-06-27 19:22:05,973 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:05,973 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:05,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 19:22:05,973 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)] === [2024-06-27 19:22:05,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:05,973 INFO L85 PathProgramCache]: Analyzing trace with hash -935759288, now seen corresponding path program 5 times [2024-06-27 19:22:05,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:05,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479082344] [2024-06-27 19:22:05,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:05,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:05,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:08,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:08,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:08,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479082344] [2024-06-27 19:22:08,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479082344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:08,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:08,789 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:08,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497966207] [2024-06-27 19:22:08,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:08,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:08,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:08,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:08,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:08,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:08,882 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 233 places, 195 transitions, 1987 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) [2024-06-27 19:22:08,882 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:08,882 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:08,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:09,578 INFO L124 PetriNetUnfolderBase]: 623/1108 cut-off events. [2024-06-27 19:22:09,578 INFO L125 PetriNetUnfolderBase]: For 95477/95480 co-relation queries the response was YES. [2024-06-27 19:22:09,584 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7197 conditions, 1108 events. 623/1108 cut-off events. For 95477/95480 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 5523 event pairs, 106 based on Foata normal form. 6/1109 useless extension candidates. Maximal degree in co-relation 7082. Up to 915 conditions per place. [2024-06-27 19:22:09,587 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 164 selfloop transitions, 49 changer transitions 0/215 dead transitions. [2024-06-27 19:22:09,587 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 215 transitions, 2512 flow [2024-06-27 19:22:09,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:22:09,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:22:09,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 19:22:09,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-27 19:22:09,589 INFO L175 Difference]: Start difference. First operand has 233 places, 195 transitions, 1987 flow. Second operand 11 states and 118 transitions. [2024-06-27 19:22:09,589 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 215 transitions, 2512 flow [2024-06-27 19:22:09,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 215 transitions, 2357 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 19:22:09,814 INFO L231 Difference]: Finished difference. Result has 235 places, 196 transitions, 1974 flow [2024-06-27 19:22:09,814 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1832, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1974, PETRI_PLACES=235, PETRI_TRANSITIONS=196} [2024-06-27 19:22:09,815 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-27 19:22:09,815 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 196 transitions, 1974 flow [2024-06-27 19:22:09,815 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) [2024-06-27 19:22:09,815 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:09,815 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:09,816 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 19:22:09,816 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)] === [2024-06-27 19:22:09,816 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:09,816 INFO L85 PathProgramCache]: Analyzing trace with hash -1192738438, now seen corresponding path program 14 times [2024-06-27 19:22:09,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:09,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954569067] [2024-06-27 19:22:09,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:09,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:09,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:12,657 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:12,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:12,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954569067] [2024-06-27 19:22:12,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954569067] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:12,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:12,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:22:12,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340470436] [2024-06-27 19:22:12,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:12,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:22:12,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:12,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:22:12,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:22:12,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:12,728 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 196 transitions, 1974 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) [2024-06-27 19:22:12,728 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:12,728 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:12,728 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:13,383 INFO L124 PetriNetUnfolderBase]: 619/1101 cut-off events. [2024-06-27 19:22:13,383 INFO L125 PetriNetUnfolderBase]: For 85020/85023 co-relation queries the response was YES. [2024-06-27 19:22:13,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6927 conditions, 1101 events. 619/1101 cut-off events. For 85020/85023 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5458 event pairs, 83 based on Foata normal form. 2/1097 useless extension candidates. Maximal degree in co-relation 6811. Up to 876 conditions per place. [2024-06-27 19:22:13,391 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 161 selfloop transitions, 51 changer transitions 0/214 dead transitions. [2024-06-27 19:22:13,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 214 transitions, 2442 flow [2024-06-27 19:22:13,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:13,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:13,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 19:22:13,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 19:22:13,392 INFO L175 Difference]: Start difference. First operand has 235 places, 196 transitions, 1974 flow. Second operand 10 states and 112 transitions. [2024-06-27 19:22:13,392 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 214 transitions, 2442 flow [2024-06-27 19:22:13,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 214 transitions, 2278 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-27 19:22:13,600 INFO L231 Difference]: Finished difference. Result has 236 places, 196 transitions, 1917 flow [2024-06-27 19:22:13,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1810, PETRI_DIFFERENCE_MINUEND_PLACES=226, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1917, PETRI_PLACES=236, PETRI_TRANSITIONS=196} [2024-06-27 19:22:13,600 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-27 19:22:13,600 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 196 transitions, 1917 flow [2024-06-27 19:22:13,600 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) [2024-06-27 19:22:13,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:13,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:13,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 19:22:13,601 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)] === [2024-06-27 19:22:13,601 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:13,601 INFO L85 PathProgramCache]: Analyzing trace with hash 326898124, now seen corresponding path program 15 times [2024-06-27 19:22:13,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:13,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [888802902] [2024-06-27 19:22:13,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:13,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:13,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:16,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:16,142 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:16,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [888802902] [2024-06-27 19:22:16,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [888802902] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:16,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:16,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:16,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337115516] [2024-06-27 19:22:16,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:16,143 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:16,143 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:16,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:16,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:16,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:16,257 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 196 transitions, 1917 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) [2024-06-27 19:22:16,257 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:16,257 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:16,257 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:16,823 INFO L124 PetriNetUnfolderBase]: 615/1095 cut-off events. [2024-06-27 19:22:16,823 INFO L125 PetriNetUnfolderBase]: For 79688/79691 co-relation queries the response was YES. [2024-06-27 19:22:16,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6653 conditions, 1095 events. 615/1095 cut-off events. For 79688/79691 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5443 event pairs, 101 based on Foata normal form. 2/1091 useless extension candidates. Maximal degree in co-relation 6536. Up to 942 conditions per place. [2024-06-27 19:22:16,832 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 177 selfloop transitions, 34 changer transitions 0/213 dead transitions. [2024-06-27 19:22:16,832 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 213 transitions, 2379 flow [2024-06-27 19:22:16,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:16,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:16,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 19:22:16,833 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-27 19:22:16,833 INFO L175 Difference]: Start difference. First operand has 236 places, 196 transitions, 1917 flow. Second operand 10 states and 109 transitions. [2024-06-27 19:22:16,833 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 213 transitions, 2379 flow [2024-06-27 19:22:16,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 213 transitions, 2233 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 19:22:16,995 INFO L231 Difference]: Finished difference. Result has 237 places, 196 transitions, 1844 flow [2024-06-27 19:22:16,995 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1771, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1844, PETRI_PLACES=237, PETRI_TRANSITIONS=196} [2024-06-27 19:22:16,995 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 206 predicate places. [2024-06-27 19:22:16,995 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 196 transitions, 1844 flow [2024-06-27 19:22:16,995 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) [2024-06-27 19:22:16,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:16,995 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:16,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 19:22:16,996 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)] === [2024-06-27 19:22:16,996 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:16,996 INFO L85 PathProgramCache]: Analyzing trace with hash -1249988404, now seen corresponding path program 6 times [2024-06-27 19:22:16,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:16,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1880334970] [2024-06-27 19:22:16,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:16,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:17,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:19,996 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:19,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:19,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1880334970] [2024-06-27 19:22:19,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1880334970] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:19,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:19,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:19,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392389922] [2024-06-27 19:22:19,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:19,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:19,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:19,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:19,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:20,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:20,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 196 transitions, 1844 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) [2024-06-27 19:22:20,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:20,104 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:20,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:20,707 INFO L124 PetriNetUnfolderBase]: 623/1112 cut-off events. [2024-06-27 19:22:20,707 INFO L125 PetriNetUnfolderBase]: For 88775/88778 co-relation queries the response was YES. [2024-06-27 19:22:20,714 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6679 conditions, 1112 events. 623/1112 cut-off events. For 88775/88778 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5563 event pairs, 118 based on Foata normal form. 6/1113 useless extension candidates. Maximal degree in co-relation 6561. Up to 983 conditions per place. [2024-06-27 19:22:20,717 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 181 selfloop transitions, 33 changer transitions 0/216 dead transitions. [2024-06-27 19:22:20,717 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 216 transitions, 2373 flow [2024-06-27 19:22:20,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:22:20,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:22:20,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 19:22:20,718 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-27 19:22:20,718 INFO L175 Difference]: Start difference. First operand has 237 places, 196 transitions, 1844 flow. Second operand 11 states and 115 transitions. [2024-06-27 19:22:20,719 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 216 transitions, 2373 flow [2024-06-27 19:22:20,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 216 transitions, 2286 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 19:22:20,907 INFO L231 Difference]: Finished difference. Result has 239 places, 197 transitions, 1869 flow [2024-06-27 19:22:20,907 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1757, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1869, PETRI_PLACES=239, PETRI_TRANSITIONS=197} [2024-06-27 19:22:20,907 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 208 predicate places. [2024-06-27 19:22:20,907 INFO L495 AbstractCegarLoop]: Abstraction has has 239 places, 197 transitions, 1869 flow [2024-06-27 19:22:20,907 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) [2024-06-27 19:22:20,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:20,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:20,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 19:22:20,908 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)] === [2024-06-27 19:22:20,908 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:20,908 INFO L85 PathProgramCache]: Analyzing trace with hash -2139694840, now seen corresponding path program 7 times [2024-06-27 19:22:20,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:20,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550213057] [2024-06-27 19:22:20,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:20,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:20,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:24,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:24,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:24,168 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550213057] [2024-06-27 19:22:24,168 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550213057] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:24,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:24,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:24,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727644406] [2024-06-27 19:22:24,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:24,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:24,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:24,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:24,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:24,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:24,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 239 places, 197 transitions, 1869 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) [2024-06-27 19:22:24,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:24,299 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:24,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:24,880 INFO L124 PetriNetUnfolderBase]: 624/1115 cut-off events. [2024-06-27 19:22:24,880 INFO L125 PetriNetUnfolderBase]: For 84825/84828 co-relation queries the response was YES. [2024-06-27 19:22:24,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6595 conditions, 1115 events. 624/1115 cut-off events. For 84825/84828 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 5579 event pairs, 127 based on Foata normal form. 6/1116 useless extension candidates. Maximal degree in co-relation 6476. Up to 1006 conditions per place. [2024-06-27 19:22:24,890 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 189 selfloop transitions, 26 changer transitions 0/217 dead transitions. [2024-06-27 19:22:24,890 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 217 transitions, 2402 flow [2024-06-27 19:22:24,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:22:24,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:22:24,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 19:22:24,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-27 19:22:24,891 INFO L175 Difference]: Start difference. First operand has 239 places, 197 transitions, 1869 flow. Second operand 11 states and 114 transitions. [2024-06-27 19:22:24,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 217 transitions, 2402 flow [2024-06-27 19:22:25,049 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 217 transitions, 2300 flow, removed 19 selfloop flow, removed 9 redundant places. [2024-06-27 19:22:25,052 INFO L231 Difference]: Finished difference. Result has 241 places, 198 transitions, 1867 flow [2024-06-27 19:22:25,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1767, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1867, PETRI_PLACES=241, PETRI_TRANSITIONS=198} [2024-06-27 19:22:25,052 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-06-27 19:22:25,052 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 198 transitions, 1867 flow [2024-06-27 19:22:25,052 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) [2024-06-27 19:22:25,053 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:25,053 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:25,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 19:22:25,053 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)] === [2024-06-27 19:22:25,053 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:25,053 INFO L85 PathProgramCache]: Analyzing trace with hash -1057194658, now seen corresponding path program 1 times [2024-06-27 19:22:25,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:25,054 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718231143] [2024-06-27 19:22:25,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:25,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:25,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:27,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:27,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:27,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718231143] [2024-06-27 19:22:27,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718231143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:27,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:27,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:27,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345399556] [2024-06-27 19:22:27,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:27,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:27,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:27,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:27,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:27,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:27,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 198 transitions, 1867 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:27,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:27,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:27,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:28,252 INFO L124 PetriNetUnfolderBase]: 628/1121 cut-off events. [2024-06-27 19:22:28,252 INFO L125 PetriNetUnfolderBase]: For 78999/78999 co-relation queries the response was YES. [2024-06-27 19:22:28,259 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6574 conditions, 1121 events. 628/1121 cut-off events. For 78999/78999 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 5623 event pairs, 126 based on Foata normal form. 2/1122 useless extension candidates. Maximal degree in co-relation 6454. Up to 995 conditions per place. [2024-06-27 19:22:28,262 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 188 selfloop transitions, 28 changer transitions 0/218 dead transitions. [2024-06-27 19:22:28,262 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 218 transitions, 2364 flow [2024-06-27 19:22:28,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:28,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:28,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 19:22:28,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-27 19:22:28,264 INFO L175 Difference]: Start difference. First operand has 241 places, 198 transitions, 1867 flow. Second operand 10 states and 107 transitions. [2024-06-27 19:22:28,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 218 transitions, 2364 flow [2024-06-27 19:22:28,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 218 transitions, 2274 flow, removed 20 selfloop flow, removed 9 redundant places. [2024-06-27 19:22:28,441 INFO L231 Difference]: Finished difference. Result has 242 places, 199 transitions, 1853 flow [2024-06-27 19:22:28,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1777, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1853, PETRI_PLACES=242, PETRI_TRANSITIONS=199} [2024-06-27 19:22:28,441 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-27 19:22:28,442 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 199 transitions, 1853 flow [2024-06-27 19:22:28,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:28,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:28,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:28,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 19:22:28,442 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)] === [2024-06-27 19:22:28,442 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:28,442 INFO L85 PathProgramCache]: Analyzing trace with hash 43689450, now seen corresponding path program 2 times [2024-06-27 19:22:28,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:28,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572392786] [2024-06-27 19:22:28,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:28,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:31,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:31,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:31,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572392786] [2024-06-27 19:22:31,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572392786] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:31,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:31,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:22:31,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855786681] [2024-06-27 19:22:31,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:31,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:22:31,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:31,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:22:31,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:22:31,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:31,326 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 199 transitions, 1853 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:31,326 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:31,326 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:31,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:31,934 INFO L124 PetriNetUnfolderBase]: 632/1129 cut-off events. [2024-06-27 19:22:31,934 INFO L125 PetriNetUnfolderBase]: For 80127/80127 co-relation queries the response was YES. [2024-06-27 19:22:31,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6587 conditions, 1129 events. 632/1129 cut-off events. For 80127/80127 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 5697 event pairs, 126 based on Foata normal form. 2/1130 useless extension candidates. Maximal degree in co-relation 6466. Up to 997 conditions per place. [2024-06-27 19:22:31,943 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 189 selfloop transitions, 28 changer transitions 0/219 dead transitions. [2024-06-27 19:22:31,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 219 transitions, 2354 flow [2024-06-27 19:22:31,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:31,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:31,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 19:22:31,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-27 19:22:31,945 INFO L175 Difference]: Start difference. First operand has 242 places, 199 transitions, 1853 flow. Second operand 10 states and 106 transitions. [2024-06-27 19:22:31,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 219 transitions, 2354 flow [2024-06-27 19:22:32,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 219 transitions, 2288 flow, removed 6 selfloop flow, removed 8 redundant places. [2024-06-27 19:22:32,125 INFO L231 Difference]: Finished difference. Result has 244 places, 200 transitions, 1866 flow [2024-06-27 19:22:32,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1787, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1866, PETRI_PLACES=244, PETRI_TRANSITIONS=200} [2024-06-27 19:22:32,125 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 213 predicate places. [2024-06-27 19:22:32,125 INFO L495 AbstractCegarLoop]: Abstraction has has 244 places, 200 transitions, 1866 flow [2024-06-27 19:22:32,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:32,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:32,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:32,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 19:22:32,126 INFO L420 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:32,126 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:32,126 INFO L85 PathProgramCache]: Analyzing trace with hash -762425476, now seen corresponding path program 3 times [2024-06-27 19:22:32,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:32,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433202841] [2024-06-27 19:22:32,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:32,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:34,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:34,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:34,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433202841] [2024-06-27 19:22:34,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433202841] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:34,498 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:34,498 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:22:34,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460853005] [2024-06-27 19:22:34,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:34,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:22:34,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:34,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:22:34,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:22:34,647 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:34,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 244 places, 200 transitions, 1866 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:34,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:34,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:34,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:35,221 INFO L124 PetriNetUnfolderBase]: 636/1137 cut-off events. [2024-06-27 19:22:35,221 INFO L125 PetriNetUnfolderBase]: For 82061/82061 co-relation queries the response was YES. [2024-06-27 19:22:35,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6646 conditions, 1137 events. 636/1137 cut-off events. For 82061/82061 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 5750 event pairs, 126 based on Foata normal form. 2/1138 useless extension candidates. Maximal degree in co-relation 6524. Up to 1021 conditions per place. [2024-06-27 19:22:35,232 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 194 selfloop transitions, 24 changer transitions 0/220 dead transitions. [2024-06-27 19:22:35,232 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 220 transitions, 2371 flow [2024-06-27 19:22:35,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:35,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:35,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 105 transitions. [2024-06-27 19:22:35,234 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-27 19:22:35,234 INFO L175 Difference]: Start difference. First operand has 244 places, 200 transitions, 1866 flow. Second operand 10 states and 105 transitions. [2024-06-27 19:22:35,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 220 transitions, 2371 flow [2024-06-27 19:22:35,423 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 245 places, 220 transitions, 2304 flow, removed 7 selfloop flow, removed 8 redundant places. [2024-06-27 19:22:35,425 INFO L231 Difference]: Finished difference. Result has 246 places, 201 transitions, 1871 flow [2024-06-27 19:22:35,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1799, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1871, PETRI_PLACES=246, PETRI_TRANSITIONS=201} [2024-06-27 19:22:35,426 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 215 predicate places. [2024-06-27 19:22:35,426 INFO L495 AbstractCegarLoop]: Abstraction has has 246 places, 201 transitions, 1871 flow [2024-06-27 19:22:35,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:35,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:35,426 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:35,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 19:22:35,426 INFO L420 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:35,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:35,427 INFO L85 PathProgramCache]: Analyzing trace with hash 897825780, now seen corresponding path program 4 times [2024-06-27 19:22:35,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:35,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396879785] [2024-06-27 19:22:35,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:35,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:37,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:37,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:37,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396879785] [2024-06-27 19:22:37,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [396879785] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:37,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:37,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:22:37,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492906124] [2024-06-27 19:22:37,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:37,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:22:37,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:37,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:22:37,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:22:37,943 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:37,943 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 246 places, 201 transitions, 1871 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:37,943 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:37,943 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:37,943 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:38,589 INFO L124 PetriNetUnfolderBase]: 640/1145 cut-off events. [2024-06-27 19:22:38,589 INFO L125 PetriNetUnfolderBase]: For 82320/82320 co-relation queries the response was YES. [2024-06-27 19:22:38,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6697 conditions, 1145 events. 640/1145 cut-off events. For 82320/82320 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5790 event pairs, 120 based on Foata normal form. 2/1146 useless extension candidates. Maximal degree in co-relation 6574. Up to 1025 conditions per place. [2024-06-27 19:22:38,597 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 198 selfloop transitions, 21 changer transitions 0/221 dead transitions. [2024-06-27 19:22:38,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 221 transitions, 2380 flow [2024-06-27 19:22:38,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:38,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:38,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 103 transitions. [2024-06-27 19:22:38,598 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321875 [2024-06-27 19:22:38,598 INFO L175 Difference]: Start difference. First operand has 246 places, 201 transitions, 1871 flow. Second operand 10 states and 103 transitions. [2024-06-27 19:22:38,598 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 221 transitions, 2380 flow [2024-06-27 19:22:38,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 221 transitions, 2318 flow, removed 8 selfloop flow, removed 8 redundant places. [2024-06-27 19:22:38,783 INFO L231 Difference]: Finished difference. Result has 248 places, 202 transitions, 1877 flow [2024-06-27 19:22:38,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1809, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1877, PETRI_PLACES=248, PETRI_TRANSITIONS=202} [2024-06-27 19:22:38,783 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 217 predicate places. [2024-06-27 19:22:38,783 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 202 transitions, 1877 flow [2024-06-27 19:22:38,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:38,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:38,783 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:38,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 19:22:38,784 INFO L420 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:38,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:38,784 INFO L85 PathProgramCache]: Analyzing trace with hash 136339262, now seen corresponding path program 1 times [2024-06-27 19:22:38,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:38,784 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205744408] [2024-06-27 19:22:38,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:38,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:42,224 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:42,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:42,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205744408] [2024-06-27 19:22:42,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205744408] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:42,225 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:42,225 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:22:42,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266100700] [2024-06-27 19:22:42,225 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:42,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:22:42,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:42,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:22:42,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:22:42,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:42,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 202 transitions, 1877 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:42,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:42,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:42,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:43,090 INFO L124 PetriNetUnfolderBase]: 646/1155 cut-off events. [2024-06-27 19:22:43,090 INFO L125 PetriNetUnfolderBase]: For 86214/86214 co-relation queries the response was YES. [2024-06-27 19:22:43,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6780 conditions, 1155 events. 646/1155 cut-off events. For 86214/86214 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 5882 event pairs, 130 based on Foata normal form. 2/1156 useless extension candidates. Maximal degree in co-relation 6656. Up to 1019 conditions per place. [2024-06-27 19:22:43,100 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 192 selfloop transitions, 31 changer transitions 0/225 dead transitions. [2024-06-27 19:22:43,100 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 225 transitions, 2430 flow [2024-06-27 19:22:43,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:22:43,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:22:43,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 19:22:43,102 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-27 19:22:43,102 INFO L175 Difference]: Start difference. First operand has 248 places, 202 transitions, 1877 flow. Second operand 11 states and 117 transitions. [2024-06-27 19:22:43,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 225 transitions, 2430 flow [2024-06-27 19:22:43,309 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 225 transitions, 2372 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 19:22:43,311 INFO L231 Difference]: Finished difference. Result has 251 places, 204 transitions, 1942 flow [2024-06-27 19:22:43,311 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1819, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1942, PETRI_PLACES=251, PETRI_TRANSITIONS=204} [2024-06-27 19:22:43,312 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-27 19:22:43,313 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 204 transitions, 1942 flow [2024-06-27 19:22:43,313 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:43,313 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:43,313 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:43,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 19:22:43,313 INFO L420 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:43,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:43,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1937768618, now seen corresponding path program 5 times [2024-06-27 19:22:43,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:43,314 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080589660] [2024-06-27 19:22:43,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:43,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:43,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:45,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:45,936 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080589660] [2024-06-27 19:22:45,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080589660] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:45,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:45,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:22:45,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958198532] [2024-06-27 19:22:45,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:45,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:22:45,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:45,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:22:45,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:22:46,097 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:46,097 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 204 transitions, 1942 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:46,097 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:46,097 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:46,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:46,853 INFO L124 PetriNetUnfolderBase]: 650/1162 cut-off events. [2024-06-27 19:22:46,853 INFO L125 PetriNetUnfolderBase]: For 87958/87958 co-relation queries the response was YES. [2024-06-27 19:22:46,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6865 conditions, 1162 events. 650/1162 cut-off events. For 87958/87958 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 5923 event pairs, 114 based on Foata normal form. 2/1163 useless extension candidates. Maximal degree in co-relation 6740. Up to 993 conditions per place. [2024-06-27 19:22:46,863 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 184 selfloop transitions, 38 changer transitions 0/224 dead transitions. [2024-06-27 19:22:46,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 260 places, 224 transitions, 2454 flow [2024-06-27 19:22:46,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:46,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:46,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:22:46,864 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:22:46,864 INFO L175 Difference]: Start difference. First operand has 251 places, 204 transitions, 1942 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:22:46,864 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 260 places, 224 transitions, 2454 flow [2024-06-27 19:22:47,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 224 transitions, 2353 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 19:22:47,104 INFO L231 Difference]: Finished difference. Result has 252 places, 205 transitions, 1945 flow [2024-06-27 19:22:47,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1841, PETRI_DIFFERENCE_MINUEND_PLACES=242, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=166, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1945, PETRI_PLACES=252, PETRI_TRANSITIONS=205} [2024-06-27 19:22:47,104 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-27 19:22:47,105 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 205 transitions, 1945 flow [2024-06-27 19:22:47,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:47,105 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:47,105 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:47,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 19:22:47,105 INFO L420 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:47,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:47,105 INFO L85 PathProgramCache]: Analyzing trace with hash 1937763968, now seen corresponding path program 6 times [2024-06-27 19:22:47,106 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:47,106 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047507383] [2024-06-27 19:22:47,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:47,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:49,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:49,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:49,718 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047507383] [2024-06-27 19:22:49,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047507383] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:49,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:49,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:22:49,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660256793] [2024-06-27 19:22:49,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:49,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:22:49,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:49,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:22:49,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:22:49,899 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:49,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 205 transitions, 1945 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:49,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:49,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:49,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:50,638 INFO L124 PetriNetUnfolderBase]: 654/1170 cut-off events. [2024-06-27 19:22:50,638 INFO L125 PetriNetUnfolderBase]: For 91610/91610 co-relation queries the response was YES. [2024-06-27 19:22:50,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6922 conditions, 1170 events. 654/1170 cut-off events. For 91610/91610 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 5989 event pairs, 114 based on Foata normal form. 2/1171 useless extension candidates. Maximal degree in co-relation 6796. Up to 1001 conditions per place. [2024-06-27 19:22:50,649 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 186 selfloop transitions, 37 changer transitions 0/225 dead transitions. [2024-06-27 19:22:50,649 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 225 transitions, 2461 flow [2024-06-27 19:22:50,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:50,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:50,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 109 transitions. [2024-06-27 19:22:50,650 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.340625 [2024-06-27 19:22:50,650 INFO L175 Difference]: Start difference. First operand has 252 places, 205 transitions, 1945 flow. Second operand 10 states and 109 transitions. [2024-06-27 19:22:50,650 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 225 transitions, 2461 flow [2024-06-27 19:22:50,876 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 225 transitions, 2367 flow, removed 10 selfloop flow, removed 8 redundant places. [2024-06-27 19:22:50,878 INFO L231 Difference]: Finished difference. Result has 254 places, 206 transitions, 1955 flow [2024-06-27 19:22:50,878 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1851, PETRI_DIFFERENCE_MINUEND_PLACES=244, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=168, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1955, PETRI_PLACES=254, PETRI_TRANSITIONS=206} [2024-06-27 19:22:50,879 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-27 19:22:50,879 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 206 transitions, 1955 flow [2024-06-27 19:22:50,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:50,879 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:50,879 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:50,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 19:22:50,879 INFO L420 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:50,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:50,880 INFO L85 PathProgramCache]: Analyzing trace with hash 1937948542, now seen corresponding path program 2 times [2024-06-27 19:22:50,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:50,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143728457] [2024-06-27 19:22:50,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:50,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:54,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:54,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:54,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143728457] [2024-06-27 19:22:54,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143728457] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:54,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:54,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:22:54,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106242447] [2024-06-27 19:22:54,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:54,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:22:54,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:54,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:22:54,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:22:54,375 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:54,375 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 206 transitions, 1955 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:54,375 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:54,375 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:54,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:55,169 INFO L124 PetriNetUnfolderBase]: 660/1180 cut-off events. [2024-06-27 19:22:55,169 INFO L125 PetriNetUnfolderBase]: For 93777/93777 co-relation queries the response was YES. [2024-06-27 19:22:55,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7007 conditions, 1180 events. 660/1180 cut-off events. For 93777/93777 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 6048 event pairs, 114 based on Foata normal form. 2/1181 useless extension candidates. Maximal degree in co-relation 6880. Up to 1001 conditions per place. [2024-06-27 19:22:55,178 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 186 selfloop transitions, 41 changer transitions 0/229 dead transitions. [2024-06-27 19:22:55,178 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 229 transitions, 2515 flow [2024-06-27 19:22:55,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:22:55,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:22:55,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 19:22:55,179 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-27 19:22:55,179 INFO L175 Difference]: Start difference. First operand has 254 places, 206 transitions, 1955 flow. Second operand 11 states and 120 transitions. [2024-06-27 19:22:55,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 229 transitions, 2515 flow [2024-06-27 19:22:55,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 229 transitions, 2421 flow, removed 11 selfloop flow, removed 8 redundant places. [2024-06-27 19:22:55,418 INFO L231 Difference]: Finished difference. Result has 257 places, 208 transitions, 2008 flow [2024-06-27 19:22:55,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1861, PETRI_DIFFERENCE_MINUEND_PLACES=246, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2008, PETRI_PLACES=257, PETRI_TRANSITIONS=208} [2024-06-27 19:22:55,419 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 226 predicate places. [2024-06-27 19:22:55,419 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 208 transitions, 2008 flow [2024-06-27 19:22:55,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:55,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:55,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:55,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 19:22:55,419 INFO L420 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:55,419 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:55,419 INFO L85 PathProgramCache]: Analyzing trace with hash 1944197708, now seen corresponding path program 7 times [2024-06-27 19:22:55,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:55,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468331874] [2024-06-27 19:22:55,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:55,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:55,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:22:58,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:22:58,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:22:58,041 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468331874] [2024-06-27 19:22:58,041 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468331874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:22:58,041 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:22:58,041 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:22:58,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475895609] [2024-06-27 19:22:58,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:22:58,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:22:58,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:22:58,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:22:58,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:22:58,145 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:22:58,145 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 208 transitions, 2008 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:58,145 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:22:58,145 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:22:58,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:22:58,784 INFO L124 PetriNetUnfolderBase]: 664/1188 cut-off events. [2024-06-27 19:22:58,784 INFO L125 PetriNetUnfolderBase]: For 96014/96014 co-relation queries the response was YES. [2024-06-27 19:22:58,792 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7077 conditions, 1188 events. 664/1188 cut-off events. For 96014/96014 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 6145 event pairs, 114 based on Foata normal form. 2/1189 useless extension candidates. Maximal degree in co-relation 6949. Up to 980 conditions per place. [2024-06-27 19:22:58,795 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 181 selfloop transitions, 46 changer transitions 0/229 dead transitions. [2024-06-27 19:22:58,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 229 transitions, 2538 flow [2024-06-27 19:22:58,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:22:58,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:22:58,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 19:22:58,796 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 19:22:58,796 INFO L175 Difference]: Start difference. First operand has 257 places, 208 transitions, 2008 flow. Second operand 10 states and 112 transitions. [2024-06-27 19:22:58,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 229 transitions, 2538 flow [2024-06-27 19:22:59,082 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 229 transitions, 2413 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 19:22:59,085 INFO L231 Difference]: Finished difference. Result has 258 places, 209 transitions, 2007 flow [2024-06-27 19:22:59,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1883, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=208, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2007, PETRI_PLACES=258, PETRI_TRANSITIONS=209} [2024-06-27 19:22:59,086 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-27 19:22:59,086 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 209 transitions, 2007 flow [2024-06-27 19:22:59,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:22:59,086 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:22:59,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:22:59,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 19:22:59,087 INFO L420 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:22:59,087 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:22:59,087 INFO L85 PathProgramCache]: Analyzing trace with hash -542449602, now seen corresponding path program 3 times [2024-06-27 19:22:59,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:22:59,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792905639] [2024-06-27 19:22:59,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:22:59,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:22:59,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:03,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:03,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:03,742 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792905639] [2024-06-27 19:23:03,742 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1792905639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:03,742 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:03,742 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:23:03,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371397154] [2024-06-27 19:23:03,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:03,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:23:03,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:03,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:23:03,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:23:03,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:03,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 209 transitions, 2007 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:03,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:03,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:03,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:05,003 INFO L124 PetriNetUnfolderBase]: 670/1198 cut-off events. [2024-06-27 19:23:05,003 INFO L125 PetriNetUnfolderBase]: For 98206/98206 co-relation queries the response was YES. [2024-06-27 19:23:05,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7166 conditions, 1198 events. 670/1198 cut-off events. For 98206/98206 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6165 event pairs, 110 based on Foata normal form. 2/1199 useless extension candidates. Maximal degree in co-relation 7037. Up to 937 conditions per place. [2024-06-27 19:23:05,014 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 173 selfloop transitions, 59 changer transitions 0/234 dead transitions. [2024-06-27 19:23:05,014 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 234 transitions, 2589 flow [2024-06-27 19:23:05,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:05,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:05,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 19:23:05,015 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-27 19:23:05,015 INFO L175 Difference]: Start difference. First operand has 258 places, 209 transitions, 2007 flow. Second operand 11 states and 124 transitions. [2024-06-27 19:23:05,015 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 234 transitions, 2589 flow [2024-06-27 19:23:05,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 234 transitions, 2475 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 19:23:05,262 INFO L231 Difference]: Finished difference. Result has 261 places, 211 transitions, 2080 flow [2024-06-27 19:23:05,263 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1893, PETRI_DIFFERENCE_MINUEND_PLACES=250, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2080, PETRI_PLACES=261, PETRI_TRANSITIONS=211} [2024-06-27 19:23:05,263 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-27 19:23:05,263 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 211 transitions, 2080 flow [2024-06-27 19:23:05,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:05,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:05,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:05,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 19:23:05,263 INFO L420 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:05,264 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:05,264 INFO L85 PathProgramCache]: Analyzing trace with hash -542680242, now seen corresponding path program 4 times [2024-06-27 19:23:05,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:05,264 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340553] [2024-06-27 19:23:05,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:05,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:05,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:09,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:09,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:09,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340553] [2024-06-27 19:23:09,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340553] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:09,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:09,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:23:09,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [281979171] [2024-06-27 19:23:09,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:09,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:23:09,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:09,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:23:09,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:23:09,137 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:09,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 211 transitions, 2080 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:09,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:09,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:09,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:09,957 INFO L124 PetriNetUnfolderBase]: 676/1208 cut-off events. [2024-06-27 19:23:09,957 INFO L125 PetriNetUnfolderBase]: For 100532/100532 co-relation queries the response was YES. [2024-06-27 19:23:09,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7300 conditions, 1208 events. 676/1208 cut-off events. For 100532/100532 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 6253 event pairs, 114 based on Foata normal form. 2/1209 useless extension candidates. Maximal degree in co-relation 7170. Up to 990 conditions per place. [2024-06-27 19:23:09,968 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 184 selfloop transitions, 49 changer transitions 0/235 dead transitions. [2024-06-27 19:23:09,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 235 transitions, 2664 flow [2024-06-27 19:23:09,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:09,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:09,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 19:23:09,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-27 19:23:09,972 INFO L175 Difference]: Start difference. First operand has 261 places, 211 transitions, 2080 flow. Second operand 11 states and 122 transitions. [2024-06-27 19:23:09,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 235 transitions, 2664 flow [2024-06-27 19:23:10,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 262 places, 235 transitions, 2499 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 19:23:10,288 INFO L231 Difference]: Finished difference. Result has 263 places, 213 transitions, 2086 flow [2024-06-27 19:23:10,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1915, PETRI_DIFFERENCE_MINUEND_PLACES=252, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=162, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2086, PETRI_PLACES=263, PETRI_TRANSITIONS=213} [2024-06-27 19:23:10,289 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 232 predicate places. [2024-06-27 19:23:10,289 INFO L495 AbstractCegarLoop]: Abstraction has has 263 places, 213 transitions, 2086 flow [2024-06-27 19:23:10,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:10,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:10,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:10,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 19:23:10,290 INFO L420 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:10,290 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:10,290 INFO L85 PathProgramCache]: Analyzing trace with hash 308473826, now seen corresponding path program 1 times [2024-06-27 19:23:10,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:10,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312765704] [2024-06-27 19:23:10,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:10,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:10,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:13,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:13,200 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:13,200 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312765704] [2024-06-27 19:23:13,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312765704] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:13,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:13,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:23:13,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101282186] [2024-06-27 19:23:13,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:13,201 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:23:13,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:13,201 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:23:13,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:23:13,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:13,333 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 263 places, 213 transitions, 2086 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:13,333 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:13,333 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:13,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:14,127 INFO L124 PetriNetUnfolderBase]: 673/1204 cut-off events. [2024-06-27 19:23:14,127 INFO L125 PetriNetUnfolderBase]: For 93251/93251 co-relation queries the response was YES. [2024-06-27 19:23:14,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7001 conditions, 1204 events. 673/1204 cut-off events. For 93251/93251 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 6233 event pairs, 143 based on Foata normal form. 2/1205 useless extension candidates. Maximal degree in co-relation 6870. Up to 1088 conditions per place. [2024-06-27 19:23:14,138 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 199 selfloop transitions, 32 changer transitions 0/233 dead transitions. [2024-06-27 19:23:14,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 233 transitions, 2611 flow [2024-06-27 19:23:14,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:14,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:14,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 19:23:14,139 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-27 19:23:14,139 INFO L175 Difference]: Start difference. First operand has 263 places, 213 transitions, 2086 flow. Second operand 11 states and 114 transitions. [2024-06-27 19:23:14,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 233 transitions, 2611 flow [2024-06-27 19:23:14,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 233 transitions, 2462 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-27 19:23:14,372 INFO L231 Difference]: Finished difference. Result has 265 places, 213 transitions, 2007 flow [2024-06-27 19:23:14,372 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1937, PETRI_DIFFERENCE_MINUEND_PLACES=254, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2007, PETRI_PLACES=265, PETRI_TRANSITIONS=213} [2024-06-27 19:23:14,373 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-27 19:23:14,373 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 213 transitions, 2007 flow [2024-06-27 19:23:14,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:14,373 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:14,373 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:14,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 19:23:14,373 INFO L420 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:14,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:14,373 INFO L85 PathProgramCache]: Analyzing trace with hash 131096042, now seen corresponding path program 8 times [2024-06-27 19:23:14,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:14,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72453521] [2024-06-27 19:23:14,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:14,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:14,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:17,002 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:17,002 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72453521] [2024-06-27 19:23:17,002 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [72453521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:17,002 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:17,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:23:17,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419926598] [2024-06-27 19:23:17,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:17,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:23:17,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:17,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:23:17,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:23:17,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:17,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 213 transitions, 2007 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:17,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:17,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:17,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:17,781 INFO L124 PetriNetUnfolderBase]: 677/1211 cut-off events. [2024-06-27 19:23:17,781 INFO L125 PetriNetUnfolderBase]: For 94830/94830 co-relation queries the response was YES. [2024-06-27 19:23:17,788 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6968 conditions, 1211 events. 677/1211 cut-off events. For 94830/94830 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 6285 event pairs, 123 based on Foata normal form. 2/1212 useless extension candidates. Maximal degree in co-relation 6836. Up to 1077 conditions per place. [2024-06-27 19:23:17,791 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 200 selfloop transitions, 30 changer transitions 0/232 dead transitions. [2024-06-27 19:23:17,791 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 274 places, 232 transitions, 2537 flow [2024-06-27 19:23:17,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:17,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:17,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 19:23:17,792 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-27 19:23:17,792 INFO L175 Difference]: Start difference. First operand has 265 places, 213 transitions, 2007 flow. Second operand 10 states and 108 transitions. [2024-06-27 19:23:17,792 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 274 places, 232 transitions, 2537 flow [2024-06-27 19:23:18,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 264 places, 232 transitions, 2424 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-27 19:23:18,055 INFO L231 Difference]: Finished difference. Result has 265 places, 214 transitions, 1988 flow [2024-06-27 19:23:18,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1894, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1988, PETRI_PLACES=265, PETRI_TRANSITIONS=214} [2024-06-27 19:23:18,056 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 234 predicate places. [2024-06-27 19:23:18,056 INFO L495 AbstractCegarLoop]: Abstraction has has 265 places, 214 transitions, 1988 flow [2024-06-27 19:23:18,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:18,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:18,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:18,056 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 19:23:18,057 INFO L420 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:18,057 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:18,057 INFO L85 PathProgramCache]: Analyzing trace with hash -542441232, now seen corresponding path program 5 times [2024-06-27 19:23:18,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:18,057 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221280600] [2024-06-27 19:23:18,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:18,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:21,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:21,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:21,654 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221280600] [2024-06-27 19:23:21,654 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221280600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:21,654 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:21,654 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:23:21,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934564693] [2024-06-27 19:23:21,654 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:21,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:23:21,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:21,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:23:21,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:23:21,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:21,826 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 265 places, 214 transitions, 1988 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:21,826 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:21,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:21,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:22,918 INFO L124 PetriNetUnfolderBase]: 693/1237 cut-off events. [2024-06-27 19:23:22,919 INFO L125 PetriNetUnfolderBase]: For 104465/104465 co-relation queries the response was YES. [2024-06-27 19:23:22,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7350 conditions, 1237 events. 693/1237 cut-off events. For 104465/104465 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 6437 event pairs, 111 based on Foata normal form. 2/1238 useless extension candidates. Maximal degree in co-relation 7218. Up to 922 conditions per place. [2024-06-27 19:23:22,931 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 170 selfloop transitions, 73 changer transitions 0/245 dead transitions. [2024-06-27 19:23:22,931 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 276 places, 245 transitions, 2870 flow [2024-06-27 19:23:22,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:23:22,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:23:22,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-27 19:23:22,932 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-27 19:23:22,932 INFO L175 Difference]: Start difference. First operand has 265 places, 214 transitions, 1988 flow. Second operand 12 states and 136 transitions. [2024-06-27 19:23:22,932 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 276 places, 245 transitions, 2870 flow [2024-06-27 19:23:23,246 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 245 transitions, 2747 flow, removed 22 selfloop flow, removed 9 redundant places. [2024-06-27 19:23:23,249 INFO L231 Difference]: Finished difference. Result has 268 places, 218 transitions, 2161 flow [2024-06-27 19:23:23,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1873, PETRI_DIFFERENCE_MINUEND_PLACES=256, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2161, PETRI_PLACES=268, PETRI_TRANSITIONS=218} [2024-06-27 19:23:23,249 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 237 predicate places. [2024-06-27 19:23:23,249 INFO L495 AbstractCegarLoop]: Abstraction has has 268 places, 218 transitions, 2161 flow [2024-06-27 19:23:23,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:23,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:23,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:23,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 19:23:23,250 INFO L420 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:23,250 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:23,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1767061538, now seen corresponding path program 9 times [2024-06-27 19:23:23,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:23,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1389447783] [2024-06-27 19:23:23,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:23,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:23,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:25,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:25,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:25,830 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1389447783] [2024-06-27 19:23:25,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1389447783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:25,830 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:25,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:23:25,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868392956] [2024-06-27 19:23:25,831 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:25,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:23:25,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:25,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:23:25,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:23:25,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:25,984 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 218 transitions, 2161 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:25,984 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:25,984 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:25,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:26,656 INFO L124 PetriNetUnfolderBase]: 697/1245 cut-off events. [2024-06-27 19:23:26,656 INFO L125 PetriNetUnfolderBase]: For 102209/102209 co-relation queries the response was YES. [2024-06-27 19:23:26,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7412 conditions, 1245 events. 697/1245 cut-off events. For 102209/102209 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 6508 event pairs, 123 based on Foata normal form. 2/1246 useless extension candidates. Maximal degree in co-relation 7280. Up to 1111 conditions per place. [2024-06-27 19:23:26,666 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 206 selfloop transitions, 29 changer transitions 0/237 dead transitions. [2024-06-27 19:23:26,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 277 places, 237 transitions, 2701 flow [2024-06-27 19:23:26,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:26,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:26,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 19:23:26,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-27 19:23:26,667 INFO L175 Difference]: Start difference. First operand has 268 places, 218 transitions, 2161 flow. Second operand 10 states and 107 transitions. [2024-06-27 19:23:26,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 277 places, 237 transitions, 2701 flow [2024-06-27 19:23:26,967 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 268 places, 237 transitions, 2517 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-27 19:23:26,969 INFO L231 Difference]: Finished difference. Result has 269 places, 219 transitions, 2069 flow [2024-06-27 19:23:26,969 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1977, PETRI_DIFFERENCE_MINUEND_PLACES=259, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=218, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2069, PETRI_PLACES=269, PETRI_TRANSITIONS=219} [2024-06-27 19:23:26,969 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 238 predicate places. [2024-06-27 19:23:26,969 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 219 transitions, 2069 flow [2024-06-27 19:23:26,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:26,970 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:26,970 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:26,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 19:23:26,970 INFO L420 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:26,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:26,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1195491412, now seen corresponding path program 10 times [2024-06-27 19:23:26,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:26,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286014475] [2024-06-27 19:23:26,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:26,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:29,276 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:29,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:29,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286014475] [2024-06-27 19:23:29,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286014475] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:29,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:29,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:23:29,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44980426] [2024-06-27 19:23:29,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:29,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:23:29,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:29,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:23:29,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:23:29,405 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:29,405 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 219 transitions, 2069 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:29,405 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:29,405 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:29,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:30,075 INFO L124 PetriNetUnfolderBase]: 701/1253 cut-off events. [2024-06-27 19:23:30,075 INFO L125 PetriNetUnfolderBase]: For 103917/103917 co-relation queries the response was YES. [2024-06-27 19:23:30,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7333 conditions, 1253 events. 701/1253 cut-off events. For 103917/103917 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6575 event pairs, 121 based on Foata normal form. 2/1254 useless extension candidates. Maximal degree in co-relation 7200. Up to 1119 conditions per place. [2024-06-27 19:23:30,088 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 208 selfloop transitions, 28 changer transitions 0/238 dead transitions. [2024-06-27 19:23:30,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 278 places, 238 transitions, 2613 flow [2024-06-27 19:23:30,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:30,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:30,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 19:23:30,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-27 19:23:30,089 INFO L175 Difference]: Start difference. First operand has 269 places, 219 transitions, 2069 flow. Second operand 10 states and 106 transitions. [2024-06-27 19:23:30,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 278 places, 238 transitions, 2613 flow [2024-06-27 19:23:30,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 238 transitions, 2531 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 19:23:30,379 INFO L231 Difference]: Finished difference. Result has 271 places, 220 transitions, 2079 flow [2024-06-27 19:23:30,379 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2079, PETRI_PLACES=271, PETRI_TRANSITIONS=220} [2024-06-27 19:23:30,380 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 240 predicate places. [2024-06-27 19:23:30,380 INFO L495 AbstractCegarLoop]: Abstraction has has 271 places, 220 transitions, 2079 flow [2024-06-27 19:23:30,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:30,380 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:30,380 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:30,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 19:23:30,380 INFO L420 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:30,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:30,381 INFO L85 PathProgramCache]: Analyzing trace with hash -715170132, now seen corresponding path program 6 times [2024-06-27 19:23:30,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:30,381 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785662956] [2024-06-27 19:23:30,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:30,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:33,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:33,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:33,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785662956] [2024-06-27 19:23:33,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785662956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:33,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:33,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:23:33,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098207900] [2024-06-27 19:23:33,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:33,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:23:33,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:33,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:23:33,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:23:34,037 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:34,038 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 271 places, 220 transitions, 2079 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:34,038 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:34,038 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:34,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:34,752 INFO L124 PetriNetUnfolderBase]: 697/1247 cut-off events. [2024-06-27 19:23:34,752 INFO L125 PetriNetUnfolderBase]: For 96447/96447 co-relation queries the response was YES. [2024-06-27 19:23:34,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7068 conditions, 1247 events. 697/1247 cut-off events. For 96447/96447 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 6514 event pairs, 125 based on Foata normal form. 2/1248 useless extension candidates. Maximal degree in co-relation 6934. Up to 1103 conditions per place. [2024-06-27 19:23:34,764 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 33 changer transitions 0/240 dead transitions. [2024-06-27 19:23:34,764 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 240 transitions, 2601 flow [2024-06-27 19:23:34,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:34,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:34,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 19:23:34,765 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-27 19:23:34,765 INFO L175 Difference]: Start difference. First operand has 271 places, 220 transitions, 2079 flow. Second operand 11 states and 118 transitions. [2024-06-27 19:23:34,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 240 transitions, 2601 flow [2024-06-27 19:23:35,033 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 240 transitions, 2493 flow, removed 27 selfloop flow, removed 8 redundant places. [2024-06-27 19:23:35,035 INFO L231 Difference]: Finished difference. Result has 274 places, 220 transitions, 2042 flow [2024-06-27 19:23:35,036 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1971, PETRI_DIFFERENCE_MINUEND_PLACES=263, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2042, PETRI_PLACES=274, PETRI_TRANSITIONS=220} [2024-06-27 19:23:35,036 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 243 predicate places. [2024-06-27 19:23:35,036 INFO L495 AbstractCegarLoop]: Abstraction has has 274 places, 220 transitions, 2042 flow [2024-06-27 19:23:35,036 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:35,036 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:35,036 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:35,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 19:23:35,036 INFO L420 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:35,036 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:35,037 INFO L85 PathProgramCache]: Analyzing trace with hash 142577438, now seen corresponding path program 7 times [2024-06-27 19:23:35,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:35,037 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [517631730] [2024-06-27 19:23:35,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:35,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:35,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:38,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:38,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:38,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [517631730] [2024-06-27 19:23:38,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [517631730] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:38,745 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:38,745 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:23:38,745 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102978980] [2024-06-27 19:23:38,745 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:38,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:23:38,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:38,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:23:38,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:23:38,931 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:38,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 274 places, 220 transitions, 2042 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:38,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:38,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:38,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:39,954 INFO L124 PetriNetUnfolderBase]: 703/1259 cut-off events. [2024-06-27 19:23:39,954 INFO L125 PetriNetUnfolderBase]: For 97936/97939 co-relation queries the response was YES. [2024-06-27 19:23:39,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7101 conditions, 1259 events. 703/1259 cut-off events. For 97936/97939 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6590 event pairs, 66 based on Foata normal form. 2/1255 useless extension candidates. Maximal degree in co-relation 6966. Up to 608 conditions per place. [2024-06-27 19:23:39,967 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 128 selfloop transitions, 118 changer transitions 0/248 dead transitions. [2024-06-27 19:23:39,967 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 284 places, 248 transitions, 3036 flow [2024-06-27 19:23:39,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:39,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:39,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 135 transitions. [2024-06-27 19:23:39,968 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3835227272727273 [2024-06-27 19:23:39,968 INFO L175 Difference]: Start difference. First operand has 274 places, 220 transitions, 2042 flow. Second operand 11 states and 135 transitions. [2024-06-27 19:23:39,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 284 places, 248 transitions, 3036 flow [2024-06-27 19:23:40,264 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 274 places, 248 transitions, 2934 flow, removed 9 selfloop flow, removed 10 redundant places. [2024-06-27 19:23:40,266 INFO L231 Difference]: Finished difference. Result has 275 places, 222 transitions, 2225 flow [2024-06-27 19:23:40,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1940, PETRI_DIFFERENCE_MINUEND_PLACES=264, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=220, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2225, PETRI_PLACES=275, PETRI_TRANSITIONS=222} [2024-06-27 19:23:40,266 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 244 predicate places. [2024-06-27 19:23:40,267 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 222 transitions, 2225 flow [2024-06-27 19:23:40,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:40,267 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:40,267 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:40,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 19:23:40,267 INFO L420 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:40,267 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:40,267 INFO L85 PathProgramCache]: Analyzing trace with hash -722815798, now seen corresponding path program 8 times [2024-06-27 19:23:40,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:40,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379957147] [2024-06-27 19:23:40,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:40,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:40,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:44,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:44,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:44,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379957147] [2024-06-27 19:23:44,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379957147] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:44,381 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:44,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:23:44,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007333831] [2024-06-27 19:23:44,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:44,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:23:44,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:44,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:23:44,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:23:44,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:44,604 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 222 transitions, 2225 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:44,604 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:44,604 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:44,604 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:45,380 INFO L124 PetriNetUnfolderBase]: 699/1251 cut-off events. [2024-06-27 19:23:45,380 INFO L125 PetriNetUnfolderBase]: For 90387/90387 co-relation queries the response was YES. [2024-06-27 19:23:45,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7086 conditions, 1251 events. 699/1251 cut-off events. For 90387/90387 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 6565 event pairs, 168 based on Foata normal form. 2/1252 useless extension candidates. Maximal degree in co-relation 6950. Up to 1208 conditions per place. [2024-06-27 19:23:45,391 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 216 selfloop transitions, 18 changer transitions 0/236 dead transitions. [2024-06-27 19:23:45,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 285 places, 236 transitions, 2731 flow [2024-06-27 19:23:45,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:45,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:45,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-06-27 19:23:45,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3039772727272727 [2024-06-27 19:23:45,393 INFO L175 Difference]: Start difference. First operand has 275 places, 222 transitions, 2225 flow. Second operand 11 states and 107 transitions. [2024-06-27 19:23:45,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 285 places, 236 transitions, 2731 flow [2024-06-27 19:23:45,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 277 places, 236 transitions, 2481 flow, removed 31 selfloop flow, removed 8 redundant places. [2024-06-27 19:23:45,693 INFO L231 Difference]: Finished difference. Result has 279 places, 223 transitions, 2029 flow [2024-06-27 19:23:45,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1977, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=222, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2029, PETRI_PLACES=279, PETRI_TRANSITIONS=223} [2024-06-27 19:23:45,693 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 248 predicate places. [2024-06-27 19:23:45,694 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 223 transitions, 2029 flow [2024-06-27 19:23:45,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:45,694 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:45,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:45,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 19:23:45,694 INFO L420 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:45,695 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:45,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1592772266, now seen corresponding path program 11 times [2024-06-27 19:23:45,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:45,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473282184] [2024-06-27 19:23:45,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:45,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:48,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:48,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:48,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473282184] [2024-06-27 19:23:48,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473282184] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:48,701 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:48,701 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:23:48,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317419818] [2024-06-27 19:23:48,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:48,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:23:48,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:48,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:23:48,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:23:48,831 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:48,831 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 223 transitions, 2029 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:48,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:48,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:48,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:49,592 INFO L124 PetriNetUnfolderBase]: 703/1261 cut-off events. [2024-06-27 19:23:49,592 INFO L125 PetriNetUnfolderBase]: For 91967/91970 co-relation queries the response was YES. [2024-06-27 19:23:49,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6868 conditions, 1261 events. 703/1261 cut-off events. For 91967/91970 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 6649 event pairs, 114 based on Foata normal form. 2/1257 useless extension candidates. Maximal degree in co-relation 6730. Up to 1074 conditions per place. [2024-06-27 19:23:49,605 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 201 selfloop transitions, 41 changer transitions 0/244 dead transitions. [2024-06-27 19:23:49,605 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 288 places, 244 transitions, 2595 flow [2024-06-27 19:23:49,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:49,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:49,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 19:23:49,606 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-27 19:23:49,606 INFO L175 Difference]: Start difference. First operand has 279 places, 223 transitions, 2029 flow. Second operand 10 states and 114 transitions. [2024-06-27 19:23:49,607 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 288 places, 244 transitions, 2595 flow [2024-06-27 19:23:49,875 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 279 places, 244 transitions, 2552 flow, removed 1 selfloop flow, removed 9 redundant places. [2024-06-27 19:23:49,877 INFO L231 Difference]: Finished difference. Result has 280 places, 224 transitions, 2106 flow [2024-06-27 19:23:49,877 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1986, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2106, PETRI_PLACES=280, PETRI_TRANSITIONS=224} [2024-06-27 19:23:49,878 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 249 predicate places. [2024-06-27 19:23:49,878 INFO L495 AbstractCegarLoop]: Abstraction has has 280 places, 224 transitions, 2106 flow [2024-06-27 19:23:49,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:49,878 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:49,878 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:49,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 19:23:49,879 INFO L420 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:49,879 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:49,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1000207670, now seen corresponding path program 9 times [2024-06-27 19:23:49,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:49,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339728639] [2024-06-27 19:23:49,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:49,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:49,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:53,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:53,249 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339728639] [2024-06-27 19:23:53,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339728639] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:53,250 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:53,250 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 19:23:53,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [682944334] [2024-06-27 19:23:53,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:53,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 19:23:53,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:53,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 19:23:53,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-06-27 19:23:53,318 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:53,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 280 places, 224 transitions, 2106 flow. Second operand has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:53,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:53,318 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:53,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:54,118 INFO L124 PetriNetUnfolderBase]: 709/1271 cut-off events. [2024-06-27 19:23:54,118 INFO L125 PetriNetUnfolderBase]: For 94540/94543 co-relation queries the response was YES. [2024-06-27 19:23:54,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7053 conditions, 1271 events. 709/1271 cut-off events. For 94540/94543 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 6685 event pairs, 75 based on Foata normal form. 2/1267 useless extension candidates. Maximal degree in co-relation 6915. Up to 665 conditions per place. [2024-06-27 19:23:54,128 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 112 selfloop transitions, 134 changer transitions 0/248 dead transitions. [2024-06-27 19:23:54,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 289 places, 248 transitions, 2924 flow [2024-06-27 19:23:54,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:23:54,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:23:54,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 122 transitions. [2024-06-27 19:23:54,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38125 [2024-06-27 19:23:54,129 INFO L175 Difference]: Start difference. First operand has 280 places, 224 transitions, 2106 flow. Second operand 10 states and 122 transitions. [2024-06-27 19:23:54,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 289 places, 248 transitions, 2924 flow [2024-06-27 19:23:54,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 248 transitions, 2814 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 19:23:54,459 INFO L231 Difference]: Finished difference. Result has 282 places, 226 transitions, 2343 flow [2024-06-27 19:23:54,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1996, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2343, PETRI_PLACES=282, PETRI_TRANSITIONS=226} [2024-06-27 19:23:54,459 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-27 19:23:54,459 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 226 transitions, 2343 flow [2024-06-27 19:23:54,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.454545454545454) internal successors, (71), 11 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:54,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:23:54,459 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:23:54,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 19:23:54,460 INFO L420 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:23:54,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:23:54,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1000216040, now seen corresponding path program 10 times [2024-06-27 19:23:54,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:23:54,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774395291] [2024-06-27 19:23:54,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:23:54,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:23:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:23:58,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:23:58,689 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:23:58,689 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774395291] [2024-06-27 19:23:58,689 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1774395291] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:23:58,689 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:23:58,689 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:23:58,689 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569540162] [2024-06-27 19:23:58,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:23:58,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:23:58,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:23:58,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:23:58,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:23:58,938 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:23:58,938 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 226 transitions, 2343 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:23:58,938 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:23:58,938 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:23:58,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:23:59,906 INFO L124 PetriNetUnfolderBase]: 715/1281 cut-off events. [2024-06-27 19:23:59,906 INFO L125 PetriNetUnfolderBase]: For 96619/96622 co-relation queries the response was YES. [2024-06-27 19:23:59,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7421 conditions, 1281 events. 715/1281 cut-off events. For 96619/96622 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 6769 event pairs, 77 based on Foata normal form. 2/1277 useless extension candidates. Maximal degree in co-relation 7282. Up to 928 conditions per place. [2024-06-27 19:23:59,918 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 169 selfloop transitions, 80 changer transitions 0/251 dead transitions. [2024-06-27 19:23:59,919 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 251 transitions, 2971 flow [2024-06-27 19:23:59,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:23:59,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:23:59,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 19:23:59,920 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 19:23:59,920 INFO L175 Difference]: Start difference. First operand has 282 places, 226 transitions, 2343 flow. Second operand 11 states and 128 transitions. [2024-06-27 19:23:59,920 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 251 transitions, 2971 flow [2024-06-27 19:24:00,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 251 transitions, 2498 flow, removed 31 selfloop flow, removed 12 redundant places. [2024-06-27 19:24:00,199 INFO L231 Difference]: Finished difference. Result has 281 places, 228 transitions, 2111 flow [2024-06-27 19:24:00,199 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1880, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=226, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=78, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2111, PETRI_PLACES=281, PETRI_TRANSITIONS=228} [2024-06-27 19:24:00,200 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 250 predicate places. [2024-06-27 19:24:00,200 INFO L495 AbstractCegarLoop]: Abstraction has has 281 places, 228 transitions, 2111 flow [2024-06-27 19:24:00,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:00,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:00,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:00,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 19:24:00,200 INFO L420 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:00,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:00,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1000453624, now seen corresponding path program 12 times [2024-06-27 19:24:00,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:00,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822205829] [2024-06-27 19:24:00,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:00,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:00,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:03,169 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:03,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:03,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822205829] [2024-06-27 19:24:03,169 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822205829] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:03,169 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:03,169 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:24:03,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985849148] [2024-06-27 19:24:03,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:03,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:24:03,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:03,170 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:24:03,170 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:24:03,282 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:03,282 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 281 places, 228 transitions, 2111 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:03,282 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:03,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:03,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:03,927 INFO L124 PetriNetUnfolderBase]: 719/1289 cut-off events. [2024-06-27 19:24:03,927 INFO L125 PetriNetUnfolderBase]: For 95977/95980 co-relation queries the response was YES. [2024-06-27 19:24:03,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7047 conditions, 1289 events. 719/1289 cut-off events. For 95977/95980 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 6800 event pairs, 79 based on Foata normal form. 2/1285 useless extension candidates. Maximal degree in co-relation 6910. Up to 960 conditions per place. [2024-06-27 19:24:03,940 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 172 selfloop transitions, 74 changer transitions 0/248 dead transitions. [2024-06-27 19:24:03,940 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 290 places, 248 transitions, 2685 flow [2024-06-27 19:24:03,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:24:03,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:24:03,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-06-27 19:24:03,941 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35625 [2024-06-27 19:24:03,941 INFO L175 Difference]: Start difference. First operand has 281 places, 228 transitions, 2111 flow. Second operand 10 states and 114 transitions. [2024-06-27 19:24:03,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 290 places, 248 transitions, 2685 flow [2024-06-27 19:24:04,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 281 places, 248 transitions, 2476 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-27 19:24:04,234 INFO L231 Difference]: Finished difference. Result has 282 places, 229 transitions, 2090 flow [2024-06-27 19:24:04,235 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1902, PETRI_DIFFERENCE_MINUEND_PLACES=272, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=228, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2090, PETRI_PLACES=282, PETRI_TRANSITIONS=229} [2024-06-27 19:24:04,235 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 251 predicate places. [2024-06-27 19:24:04,235 INFO L495 AbstractCegarLoop]: Abstraction has has 282 places, 229 transitions, 2090 flow [2024-06-27 19:24:04,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:04,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:04,235 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:04,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 19:24:04,235 INFO L420 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:04,235 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:04,236 INFO L85 PathProgramCache]: Analyzing trace with hash -1000446680, now seen corresponding path program 11 times [2024-06-27 19:24:04,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:04,236 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069593668] [2024-06-27 19:24:04,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:04,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:04,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:08,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:08,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:08,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069593668] [2024-06-27 19:24:08,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069593668] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:08,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:08,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:24:08,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036441837] [2024-06-27 19:24:08,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:08,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:24:08,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:08,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:24:08,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:24:08,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:08,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 282 places, 229 transitions, 2090 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:08,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:08,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:08,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:09,289 INFO L124 PetriNetUnfolderBase]: 725/1299 cut-off events. [2024-06-27 19:24:09,289 INFO L125 PetriNetUnfolderBase]: For 97882/97885 co-relation queries the response was YES. [2024-06-27 19:24:09,298 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7098 conditions, 1299 events. 725/1299 cut-off events. For 97882/97885 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 6882 event pairs, 73 based on Foata normal form. 2/1295 useless extension candidates. Maximal degree in co-relation 6960. Up to 812 conditions per place. [2024-06-27 19:24:09,301 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 150 selfloop transitions, 100 changer transitions 0/252 dead transitions. [2024-06-27 19:24:09,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 252 transitions, 2708 flow [2024-06-27 19:24:09,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:24:09,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:24:09,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 19:24:09,303 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-27 19:24:09,303 INFO L175 Difference]: Start difference. First operand has 282 places, 229 transitions, 2090 flow. Second operand 11 states and 127 transitions. [2024-06-27 19:24:09,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 252 transitions, 2708 flow [2024-06-27 19:24:09,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 284 places, 252 transitions, 2530 flow, removed 16 selfloop flow, removed 8 redundant places. [2024-06-27 19:24:09,641 INFO L231 Difference]: Finished difference. Result has 285 places, 231 transitions, 2187 flow [2024-06-27 19:24:09,642 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1912, PETRI_DIFFERENCE_MINUEND_PLACES=274, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=229, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2187, PETRI_PLACES=285, PETRI_TRANSITIONS=231} [2024-06-27 19:24:09,642 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 254 predicate places. [2024-06-27 19:24:09,642 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 231 transitions, 2187 flow [2024-06-27 19:24:09,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:09,642 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:09,642 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:09,642 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 19:24:09,642 INFO L420 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:09,643 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:09,643 INFO L85 PathProgramCache]: Analyzing trace with hash -324929206, now seen corresponding path program 12 times [2024-06-27 19:24:09,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:09,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861908453] [2024-06-27 19:24:09,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:09,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:09,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:13,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:13,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:13,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861908453] [2024-06-27 19:24:13,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861908453] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:13,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:13,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:24:13,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948356313] [2024-06-27 19:24:13,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:13,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:24:13,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:13,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:24:13,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:24:13,929 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:13,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 231 transitions, 2187 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:13,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:13,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:13,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:14,806 INFO L124 PetriNetUnfolderBase]: 731/1309 cut-off events. [2024-06-27 19:24:14,807 INFO L125 PetriNetUnfolderBase]: For 99981/99984 co-relation queries the response was YES. [2024-06-27 19:24:14,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7254 conditions, 1309 events. 731/1309 cut-off events. For 99981/99984 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 6910 event pairs, 100 based on Foata normal form. 2/1305 useless extension candidates. Maximal degree in co-relation 7115. Up to 1040 conditions per place. [2024-06-27 19:24:14,819 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 193 selfloop transitions, 61 changer transitions 0/256 dead transitions. [2024-06-27 19:24:14,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 256 transitions, 2823 flow [2024-06-27 19:24:14,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:24:14,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:24:14,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 19:24:14,820 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-27 19:24:14,820 INFO L175 Difference]: Start difference. First operand has 285 places, 231 transitions, 2187 flow. Second operand 11 states and 127 transitions. [2024-06-27 19:24:14,820 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 256 transitions, 2823 flow [2024-06-27 19:24:15,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 286 places, 256 transitions, 2570 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 19:24:15,139 INFO L231 Difference]: Finished difference. Result has 287 places, 233 transitions, 2135 flow [2024-06-27 19:24:15,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1934, PETRI_DIFFERENCE_MINUEND_PLACES=276, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=231, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=170, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2135, PETRI_PLACES=287, PETRI_TRANSITIONS=233} [2024-06-27 19:24:15,140 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 256 predicate places. [2024-06-27 19:24:15,140 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 233 transitions, 2135 flow [2024-06-27 19:24:15,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:15,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:15,140 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:15,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 19:24:15,140 INFO L420 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:15,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:15,140 INFO L85 PathProgramCache]: Analyzing trace with hash 1593009850, now seen corresponding path program 13 times [2024-06-27 19:24:15,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:15,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051906710] [2024-06-27 19:24:15,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:15,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:18,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:18,741 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:18,741 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051906710] [2024-06-27 19:24:18,741 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051906710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:18,741 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:18,741 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:18,742 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704602370] [2024-06-27 19:24:18,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:18,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:18,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:18,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:18,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:18,914 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:18,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 233 transitions, 2135 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:18,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:18,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:18,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:19,815 INFO L124 PetriNetUnfolderBase]: 737/1319 cut-off events. [2024-06-27 19:24:19,815 INFO L125 PetriNetUnfolderBase]: For 102123/102126 co-relation queries the response was YES. [2024-06-27 19:24:19,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7226 conditions, 1319 events. 737/1319 cut-off events. For 102123/102126 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 6997 event pairs, 120 based on Foata normal form. 2/1315 useless extension candidates. Maximal degree in co-relation 7086. Up to 1092 conditions per place. [2024-06-27 19:24:19,827 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 205 selfloop transitions, 51 changer transitions 0/258 dead transitions. [2024-06-27 19:24:19,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 297 places, 258 transitions, 2779 flow [2024-06-27 19:24:19,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:24:19,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:24:19,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 19:24:19,828 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-27 19:24:19,829 INFO L175 Difference]: Start difference. First operand has 287 places, 233 transitions, 2135 flow. Second operand 11 states and 126 transitions. [2024-06-27 19:24:19,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 297 places, 258 transitions, 2779 flow [2024-06-27 19:24:20,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 288 places, 258 transitions, 2600 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-27 19:24:20,121 INFO L231 Difference]: Finished difference. Result has 289 places, 235 transitions, 2141 flow [2024-06-27 19:24:20,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1956, PETRI_DIFFERENCE_MINUEND_PLACES=278, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=233, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2141, PETRI_PLACES=289, PETRI_TRANSITIONS=235} [2024-06-27 19:24:20,121 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 258 predicate places. [2024-06-27 19:24:20,121 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 235 transitions, 2141 flow [2024-06-27 19:24:20,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:20,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:20,122 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:20,122 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 19:24:20,122 INFO L420 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:20,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:20,122 INFO L85 PathProgramCache]: Analyzing trace with hash 1592779210, now seen corresponding path program 14 times [2024-06-27 19:24:20,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:20,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078697616] [2024-06-27 19:24:20,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:20,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:23,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:23,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:23,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078697616] [2024-06-27 19:24:23,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078697616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:23,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:23,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:24:23,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012580876] [2024-06-27 19:24:23,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:23,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:24:23,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:23,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:24:23,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:24:23,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:23,940 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 235 transitions, 2141 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:23,940 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:23,940 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:23,940 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:24,658 INFO L124 PetriNetUnfolderBase]: 743/1329 cut-off events. [2024-06-27 19:24:24,658 INFO L125 PetriNetUnfolderBase]: For 104097/104100 co-relation queries the response was YES. [2024-06-27 19:24:24,668 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7276 conditions, 1329 events. 743/1329 cut-off events. For 104097/104100 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 7055 event pairs, 124 based on Foata normal form. 2/1325 useless extension candidates. Maximal degree in co-relation 7135. Up to 1132 conditions per place. [2024-06-27 19:24:24,671 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 213 selfloop transitions, 44 changer transitions 0/259 dead transitions. [2024-06-27 19:24:24,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 299 places, 259 transitions, 2787 flow [2024-06-27 19:24:24,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:24:24,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:24:24,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 19:24:24,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-27 19:24:24,672 INFO L175 Difference]: Start difference. First operand has 289 places, 235 transitions, 2141 flow. Second operand 11 states and 124 transitions. [2024-06-27 19:24:24,672 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 299 places, 259 transitions, 2787 flow [2024-06-27 19:24:24,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 259 transitions, 2624 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-27 19:24:24,971 INFO L231 Difference]: Finished difference. Result has 291 places, 237 transitions, 2153 flow [2024-06-27 19:24:24,972 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1978, PETRI_DIFFERENCE_MINUEND_PLACES=280, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=191, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2153, PETRI_PLACES=291, PETRI_TRANSITIONS=237} [2024-06-27 19:24:24,972 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 260 predicate places. [2024-06-27 19:24:24,972 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 237 transitions, 2153 flow [2024-06-27 19:24:24,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:24,972 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:24,972 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:24,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 19:24:24,972 INFO L420 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:24,973 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:24,973 INFO L85 PathProgramCache]: Analyzing trace with hash -325166790, now seen corresponding path program 13 times [2024-06-27 19:24:24,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:24,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707607326] [2024-06-27 19:24:24,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:24,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:27,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:27,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:27,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707607326] [2024-06-27 19:24:27,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707607326] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:27,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:27,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:24:27,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702316439] [2024-06-27 19:24:27,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:27,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:24:27,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:27,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:24:27,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:24:28,096 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:28,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 237 transitions, 2153 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:28,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:28,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:28,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:28,773 INFO L124 PetriNetUnfolderBase]: 747/1337 cut-off events. [2024-06-27 19:24:28,773 INFO L125 PetriNetUnfolderBase]: For 106057/106060 co-relation queries the response was YES. [2024-06-27 19:24:28,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7282 conditions, 1337 events. 747/1337 cut-off events. For 106057/106060 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 7116 event pairs, 103 based on Foata normal form. 2/1333 useless extension candidates. Maximal degree in co-relation 7140. Up to 1100 conditions per place. [2024-06-27 19:24:28,787 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 203 selfloop transitions, 53 changer transitions 0/258 dead transitions. [2024-06-27 19:24:28,787 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 258 transitions, 2751 flow [2024-06-27 19:24:28,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:24:28,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:24:28,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 115 transitions. [2024-06-27 19:24:28,788 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 19:24:28,788 INFO L175 Difference]: Start difference. First operand has 291 places, 237 transitions, 2153 flow. Second operand 10 states and 115 transitions. [2024-06-27 19:24:28,788 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 258 transitions, 2751 flow [2024-06-27 19:24:29,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 258 transitions, 2598 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-27 19:24:29,113 INFO L231 Difference]: Finished difference. Result has 292 places, 238 transitions, 2148 flow [2024-06-27 19:24:29,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2148, PETRI_PLACES=292, PETRI_TRANSITIONS=238} [2024-06-27 19:24:29,113 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 261 predicate places. [2024-06-27 19:24:29,113 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 238 transitions, 2148 flow [2024-06-27 19:24:29,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:29,113 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:29,113 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:29,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 19:24:29,113 INFO L420 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:29,114 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:29,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1586343176, now seen corresponding path program 14 times [2024-06-27 19:24:29,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:29,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270100521] [2024-06-27 19:24:29,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:29,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:29,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:32,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:32,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:32,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270100521] [2024-06-27 19:24:32,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270100521] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:32,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:32,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:24:32,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [974265717] [2024-06-27 19:24:32,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:32,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:24:32,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:32,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:24:32,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:24:32,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:32,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 238 transitions, 2148 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:32,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:32,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:32,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:32,673 INFO L124 PetriNetUnfolderBase]: 751/1345 cut-off events. [2024-06-27 19:24:32,673 INFO L125 PetriNetUnfolderBase]: For 107823/107826 co-relation queries the response was YES. [2024-06-27 19:24:32,684 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7331 conditions, 1345 events. 751/1345 cut-off events. For 107823/107826 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 7159 event pairs, 130 based on Foata normal form. 2/1341 useless extension candidates. Maximal degree in co-relation 7188. Up to 1180 conditions per place. [2024-06-27 19:24:32,687 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 220 selfloop transitions, 36 changer transitions 0/258 dead transitions. [2024-06-27 19:24:32,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 301 places, 258 transitions, 2744 flow [2024-06-27 19:24:32,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:24:32,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:24:32,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-06-27 19:24:32,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35 [2024-06-27 19:24:32,688 INFO L175 Difference]: Start difference. First operand has 292 places, 238 transitions, 2148 flow. Second operand 10 states and 112 transitions. [2024-06-27 19:24:32,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 301 places, 258 transitions, 2744 flow [2024-06-27 19:24:32,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 293 places, 258 transitions, 2606 flow, removed 17 selfloop flow, removed 8 redundant places. [2024-06-27 19:24:32,990 INFO L231 Difference]: Finished difference. Result has 294 places, 239 transitions, 2126 flow [2024-06-27 19:24:32,990 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=284, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2126, PETRI_PLACES=294, PETRI_TRANSITIONS=239} [2024-06-27 19:24:32,990 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 263 predicate places. [2024-06-27 19:24:32,990 INFO L495 AbstractCegarLoop]: Abstraction has has 294 places, 239 transitions, 2126 flow [2024-06-27 19:24:32,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:32,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:32,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:32,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 19:24:32,991 INFO L420 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:32,991 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:32,991 INFO L85 PathProgramCache]: Analyzing trace with hash 720953660, now seen corresponding path program 15 times [2024-06-27 19:24:32,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:32,991 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173967672] [2024-06-27 19:24:32,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:32,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:33,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:35,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:35,871 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:35,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173967672] [2024-06-27 19:24:35,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173967672] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:35,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:35,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:35,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783386675] [2024-06-27 19:24:35,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:35,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:35,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:35,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:35,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:36,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:36,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 294 places, 239 transitions, 2126 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:36,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:36,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:36,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:36,612 INFO L124 PetriNetUnfolderBase]: 755/1353 cut-off events. [2024-06-27 19:24:36,612 INFO L125 PetriNetUnfolderBase]: For 109944/109947 co-relation queries the response was YES. [2024-06-27 19:24:36,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7332 conditions, 1353 events. 755/1353 cut-off events. For 109944/109947 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7249 event pairs, 130 based on Foata normal form. 2/1349 useless extension candidates. Maximal degree in co-relation 7188. Up to 1188 conditions per place. [2024-06-27 19:24:36,626 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 222 selfloop transitions, 35 changer transitions 0/259 dead transitions. [2024-06-27 19:24:36,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 259 transitions, 2726 flow [2024-06-27 19:24:36,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:24:36,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:24:36,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 19:24:36,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-27 19:24:36,627 INFO L175 Difference]: Start difference. First operand has 294 places, 239 transitions, 2126 flow. Second operand 10 states and 111 transitions. [2024-06-27 19:24:36,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 259 transitions, 2726 flow [2024-06-27 19:24:37,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 295 places, 259 transitions, 2620 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-06-27 19:24:37,041 INFO L231 Difference]: Finished difference. Result has 296 places, 240 transitions, 2136 flow [2024-06-27 19:24:37,041 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2020, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2136, PETRI_PLACES=296, PETRI_TRANSITIONS=240} [2024-06-27 19:24:37,041 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 265 predicate places. [2024-06-27 19:24:37,041 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 240 transitions, 2136 flow [2024-06-27 19:24:37,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:37,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:37,041 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:37,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 19:24:37,041 INFO L420 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:37,042 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:37,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1190544712, now seen corresponding path program 15 times [2024-06-27 19:24:37,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:37,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635422774] [2024-06-27 19:24:37,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:37,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:37,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:40,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:40,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:40,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635422774] [2024-06-27 19:24:40,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635422774] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:40,415 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:40,415 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:24:40,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116148629] [2024-06-27 19:24:40,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:40,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:24:40,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:40,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:24:40,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:24:40,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:40,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 240 transitions, 2136 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:40,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:40,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:40,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:41,359 INFO L124 PetriNetUnfolderBase]: 761/1363 cut-off events. [2024-06-27 19:24:41,359 INFO L125 PetriNetUnfolderBase]: For 112181/112184 co-relation queries the response was YES. [2024-06-27 19:24:41,367 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7423 conditions, 1363 events. 761/1363 cut-off events. For 112181/112184 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 7292 event pairs, 105 based on Foata normal form. 2/1359 useless extension candidates. Maximal degree in co-relation 7278. Up to 1116 conditions per place. [2024-06-27 19:24:41,370 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 206 selfloop transitions, 56 changer transitions 0/264 dead transitions. [2024-06-27 19:24:41,370 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 306 places, 264 transitions, 2796 flow [2024-06-27 19:24:41,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:24:41,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:24:41,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 19:24:41,371 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-27 19:24:41,371 INFO L175 Difference]: Start difference. First operand has 296 places, 240 transitions, 2136 flow. Second operand 11 states and 125 transitions. [2024-06-27 19:24:41,371 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 306 places, 264 transitions, 2796 flow [2024-06-27 19:24:41,661 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 298 places, 264 transitions, 2690 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 19:24:41,663 INFO L231 Difference]: Finished difference. Result has 299 places, 242 transitions, 2233 flow [2024-06-27 19:24:41,663 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2030, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2233, PETRI_PLACES=299, PETRI_TRANSITIONS=242} [2024-06-27 19:24:41,663 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 268 predicate places. [2024-06-27 19:24:41,663 INFO L495 AbstractCegarLoop]: Abstraction has has 299 places, 242 transitions, 2233 flow [2024-06-27 19:24:41,664 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:41,664 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:41,664 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:41,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 19:24:41,664 INFO L420 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:41,664 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:41,664 INFO L85 PathProgramCache]: Analyzing trace with hash 721138234, now seen corresponding path program 16 times [2024-06-27 19:24:41,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:41,664 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091207438] [2024-06-27 19:24:41,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:41,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:46,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:46,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:46,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091207438] [2024-06-27 19:24:46,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091207438] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:46,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:46,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:24:46,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1807687111] [2024-06-27 19:24:46,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:46,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:24:46,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:46,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:24:46,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:24:46,423 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:46,423 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 299 places, 242 transitions, 2233 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:46,423 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:46,423 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:46,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:47,223 INFO L124 PetriNetUnfolderBase]: 767/1373 cut-off events. [2024-06-27 19:24:47,223 INFO L125 PetriNetUnfolderBase]: For 114626/114629 co-relation queries the response was YES. [2024-06-27 19:24:47,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7587 conditions, 1373 events. 767/1373 cut-off events. For 114626/114629 co-relation queries the response was YES. Maximal size of possible extension queue 141. Compared 7390 event pairs, 132 based on Foata normal form. 2/1369 useless extension candidates. Maximal degree in co-relation 7441. Up to 1198 conditions per place. [2024-06-27 19:24:47,236 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 224 selfloop transitions, 39 changer transitions 0/265 dead transitions. [2024-06-27 19:24:47,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 265 transitions, 2895 flow [2024-06-27 19:24:47,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:24:47,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:24:47,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 122 transitions. [2024-06-27 19:24:47,237 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3465909090909091 [2024-06-27 19:24:47,237 INFO L175 Difference]: Start difference. First operand has 299 places, 242 transitions, 2233 flow. Second operand 11 states and 122 transitions. [2024-06-27 19:24:47,237 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 309 places, 265 transitions, 2895 flow [2024-06-27 19:24:47,530 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 300 places, 265 transitions, 2714 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-27 19:24:47,533 INFO L231 Difference]: Finished difference. Result has 301 places, 244 transitions, 2225 flow [2024-06-27 19:24:47,533 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2052, PETRI_DIFFERENCE_MINUEND_PLACES=290, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=203, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2225, PETRI_PLACES=301, PETRI_TRANSITIONS=244} [2024-06-27 19:24:47,533 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 270 predicate places. [2024-06-27 19:24:47,533 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 244 transitions, 2225 flow [2024-06-27 19:24:47,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:47,534 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:47,534 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:47,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 19:24:47,534 INFO L420 AbstractCegarLoop]: === Iteration 124 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:47,534 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:47,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1196980746, now seen corresponding path program 16 times [2024-06-27 19:24:47,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:47,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243659567] [2024-06-27 19:24:47,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:47,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:51,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:51,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:51,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243659567] [2024-06-27 19:24:51,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243659567] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:51,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:51,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:24:51,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287879595] [2024-06-27 19:24:51,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:51,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:24:51,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:51,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:24:51,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:24:51,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:51,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 244 transitions, 2225 flow. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:51,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:51,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:51,182 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:51,933 INFO L124 PetriNetUnfolderBase]: 771/1381 cut-off events. [2024-06-27 19:24:51,933 INFO L125 PetriNetUnfolderBase]: For 116689/116692 co-relation queries the response was YES. [2024-06-27 19:24:51,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7563 conditions, 1381 events. 771/1381 cut-off events. For 116689/116692 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 7423 event pairs, 109 based on Foata normal form. 2/1377 useless extension candidates. Maximal degree in co-relation 7416. Up to 1158 conditions per place. [2024-06-27 19:24:51,947 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 211 selfloop transitions, 50 changer transitions 0/263 dead transitions. [2024-06-27 19:24:51,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 263 transitions, 2833 flow [2024-06-27 19:24:51,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:24:51,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:24:51,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-06-27 19:24:51,948 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346875 [2024-06-27 19:24:51,948 INFO L175 Difference]: Start difference. First operand has 301 places, 244 transitions, 2225 flow. Second operand 10 states and 111 transitions. [2024-06-27 19:24:51,948 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 263 transitions, 2833 flow [2024-06-27 19:24:52,262 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 263 transitions, 2682 flow, removed 38 selfloop flow, removed 9 redundant places. [2024-06-27 19:24:52,265 INFO L231 Difference]: Finished difference. Result has 302 places, 245 transitions, 2222 flow [2024-06-27 19:24:52,265 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2074, PETRI_DIFFERENCE_MINUEND_PLACES=292, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2222, PETRI_PLACES=302, PETRI_TRANSITIONS=245} [2024-06-27 19:24:52,265 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 271 predicate places. [2024-06-27 19:24:52,266 INFO L495 AbstractCegarLoop]: Abstraction has has 302 places, 245 transitions, 2222 flow [2024-06-27 19:24:52,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 13 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:52,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:52,266 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:52,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 19:24:52,266 INFO L420 AbstractCegarLoop]: === Iteration 125 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:52,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:52,266 INFO L85 PathProgramCache]: Analyzing trace with hash 550255880, now seen corresponding path program 17 times [2024-06-27 19:24:52,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:52,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263116442] [2024-06-27 19:24:52,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:52,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:54,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:54,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:54,866 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263116442] [2024-06-27 19:24:54,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263116442] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:54,866 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:54,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:24:54,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575525248] [2024-06-27 19:24:54,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:54,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:24:54,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:54,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:24:54,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:24:55,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:55,006 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 302 places, 245 transitions, 2222 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:55,006 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:55,006 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:55,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:55,593 INFO L124 PetriNetUnfolderBase]: 775/1389 cut-off events. [2024-06-27 19:24:55,593 INFO L125 PetriNetUnfolderBase]: For 118584/118587 co-relation queries the response was YES. [2024-06-27 19:24:55,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7618 conditions, 1389 events. 775/1389 cut-off events. For 118584/118587 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 7485 event pairs, 140 based on Foata normal form. 2/1385 useless extension candidates. Maximal degree in co-relation 7470. Up to 1238 conditions per place. [2024-06-27 19:24:55,607 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 228 selfloop transitions, 33 changer transitions 0/263 dead transitions. [2024-06-27 19:24:55,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 311 places, 263 transitions, 2828 flow [2024-06-27 19:24:55,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:24:55,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:24:55,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 108 transitions. [2024-06-27 19:24:55,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3375 [2024-06-27 19:24:55,608 INFO L175 Difference]: Start difference. First operand has 302 places, 245 transitions, 2222 flow. Second operand 10 states and 108 transitions. [2024-06-27 19:24:55,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 311 places, 263 transitions, 2828 flow [2024-06-27 19:24:55,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 263 transitions, 2690 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 19:24:55,947 INFO L231 Difference]: Finished difference. Result has 304 places, 246 transitions, 2200 flow [2024-06-27 19:24:55,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2084, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=212, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2200, PETRI_PLACES=304, PETRI_TRANSITIONS=246} [2024-06-27 19:24:55,947 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 273 predicate places. [2024-06-27 19:24:55,947 INFO L495 AbstractCegarLoop]: Abstraction has has 304 places, 246 transitions, 2200 flow [2024-06-27 19:24:55,947 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:55,947 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:24:55,947 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:24:55,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 19:24:55,948 INFO L420 AbstractCegarLoop]: === Iteration 126 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:24:55,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:24:55,948 INFO L85 PathProgramCache]: Analyzing trace with hash -1196985396, now seen corresponding path program 18 times [2024-06-27 19:24:55,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:24:55,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780089552] [2024-06-27 19:24:55,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:24:55,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:24:55,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:24:58,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:24:58,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:24:58,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780089552] [2024-06-27 19:24:58,905 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780089552] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:24:58,905 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:24:58,905 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:24:58,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563936408] [2024-06-27 19:24:58,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:24:58,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:24:58,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:24:58,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:24:58,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:24:59,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:24:59,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 246 transitions, 2200 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:24:59,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:24:59,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:24:59,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:24:59,751 INFO L124 PetriNetUnfolderBase]: 779/1397 cut-off events. [2024-06-27 19:24:59,751 INFO L125 PetriNetUnfolderBase]: For 120661/120664 co-relation queries the response was YES. [2024-06-27 19:24:59,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7619 conditions, 1397 events. 779/1397 cut-off events. For 120661/120664 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 7533 event pairs, 111 based on Foata normal form. 2/1393 useless extension candidates. Maximal degree in co-relation 7470. Up to 1174 conditions per place. [2024-06-27 19:24:59,765 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 214 selfloop transitions, 49 changer transitions 0/265 dead transitions. [2024-06-27 19:24:59,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 313 places, 265 transitions, 2816 flow [2024-06-27 19:24:59,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:24:59,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:24:59,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 110 transitions. [2024-06-27 19:24:59,766 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:24:59,766 INFO L175 Difference]: Start difference. First operand has 304 places, 246 transitions, 2200 flow. Second operand 10 states and 110 transitions. [2024-06-27 19:24:59,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 313 places, 265 transitions, 2816 flow [2024-06-27 19:25:00,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 305 places, 265 transitions, 2710 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-06-27 19:25:00,097 INFO L231 Difference]: Finished difference. Result has 306 places, 247 transitions, 2244 flow [2024-06-27 19:25:00,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2094, PETRI_DIFFERENCE_MINUEND_PLACES=296, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2244, PETRI_PLACES=306, PETRI_TRANSITIONS=247} [2024-06-27 19:25:00,098 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 275 predicate places. [2024-06-27 19:25:00,098 INFO L495 AbstractCegarLoop]: Abstraction has has 306 places, 247 transitions, 2244 flow [2024-06-27 19:25:00,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:00,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:00,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:00,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 19:25:00,098 INFO L420 AbstractCegarLoop]: === Iteration 127 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:00,098 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:00,099 INFO L85 PathProgramCache]: Analyzing trace with hash -1196800822, now seen corresponding path program 17 times [2024-06-27 19:25:00,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:00,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427778572] [2024-06-27 19:25:00,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:00,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:00,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:03,482 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:03,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:03,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427778572] [2024-06-27 19:25:03,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1427778572] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:03,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:03,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:25:03,483 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006032622] [2024-06-27 19:25:03,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:03,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:25:03,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:03,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:25:03,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:25:03,678 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:03,678 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 306 places, 247 transitions, 2244 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:03,678 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:03,678 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:03,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:04,514 INFO L124 PetriNetUnfolderBase]: 785/1407 cut-off events. [2024-06-27 19:25:04,515 INFO L125 PetriNetUnfolderBase]: For 123039/123042 co-relation queries the response was YES. [2024-06-27 19:25:04,524 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7762 conditions, 1407 events. 785/1407 cut-off events. For 123039/123042 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 7604 event pairs, 113 based on Foata normal form. 2/1403 useless extension candidates. Maximal degree in co-relation 7612. Up to 1174 conditions per place. [2024-06-27 19:25:04,527 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 214 selfloop transitions, 53 changer transitions 0/269 dead transitions. [2024-06-27 19:25:04,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 269 transitions, 2916 flow [2024-06-27 19:25:04,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:04,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:04,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 19:25:04,528 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:25:04,528 INFO L175 Difference]: Start difference. First operand has 306 places, 247 transitions, 2244 flow. Second operand 11 states and 121 transitions. [2024-06-27 19:25:04,528 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 269 transitions, 2916 flow [2024-06-27 19:25:04,899 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 269 transitions, 2776 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 19:25:04,902 INFO L231 Difference]: Finished difference. Result has 309 places, 249 transitions, 2309 flow [2024-06-27 19:25:04,902 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2104, PETRI_DIFFERENCE_MINUEND_PLACES=298, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2309, PETRI_PLACES=309, PETRI_TRANSITIONS=249} [2024-06-27 19:25:04,902 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 278 predicate places. [2024-06-27 19:25:04,902 INFO L495 AbstractCegarLoop]: Abstraction has has 309 places, 249 transitions, 2309 flow [2024-06-27 19:25:04,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:04,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:04,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:04,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 19:25:04,903 INFO L420 AbstractCegarLoop]: === Iteration 128 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:04,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:04,903 INFO L85 PathProgramCache]: Analyzing trace with hash 550251230, now seen corresponding path program 19 times [2024-06-27 19:25:04,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:04,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341810929] [2024-06-27 19:25:04,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:04,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:07,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:07,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:07,491 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341810929] [2024-06-27 19:25:07,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341810929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:07,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:07,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:25:07,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428671648] [2024-06-27 19:25:07,493 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:07,493 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:25:07,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:07,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:25:07,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:25:07,689 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:07,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 249 transitions, 2309 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:07,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:07,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:07,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:08,340 INFO L124 PetriNetUnfolderBase]: 789/1415 cut-off events. [2024-06-27 19:25:08,340 INFO L125 PetriNetUnfolderBase]: For 125301/125304 co-relation queries the response was YES. [2024-06-27 19:25:08,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7828 conditions, 1415 events. 789/1415 cut-off events. For 125301/125304 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7670 event pairs, 141 based on Foata normal form. 2/1411 useless extension candidates. Maximal degree in co-relation 7677. Up to 1264 conditions per place. [2024-06-27 19:25:08,353 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 233 selfloop transitions, 32 changer transitions 0/267 dead transitions. [2024-06-27 19:25:08,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 267 transitions, 2927 flow [2024-06-27 19:25:08,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:25:08,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:25:08,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 107 transitions. [2024-06-27 19:25:08,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.334375 [2024-06-27 19:25:08,355 INFO L175 Difference]: Start difference. First operand has 309 places, 249 transitions, 2309 flow. Second operand 10 states and 107 transitions. [2024-06-27 19:25:08,355 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 267 transitions, 2927 flow [2024-06-27 19:25:08,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 309 places, 267 transitions, 2744 flow, removed 40 selfloop flow, removed 9 redundant places. [2024-06-27 19:25:08,667 INFO L231 Difference]: Finished difference. Result has 310 places, 250 transitions, 2244 flow [2024-06-27 19:25:08,668 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2126, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2244, PETRI_PLACES=310, PETRI_TRANSITIONS=250} [2024-06-27 19:25:08,668 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 279 predicate places. [2024-06-27 19:25:08,668 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 250 transitions, 2244 flow [2024-06-27 19:25:08,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:08,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:08,669 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:08,669 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 19:25:08,669 INFO L420 AbstractCegarLoop]: === Iteration 129 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:08,669 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:08,669 INFO L85 PathProgramCache]: Analyzing trace with hash 1415520776, now seen corresponding path program 20 times [2024-06-27 19:25:08,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:08,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62401839] [2024-06-27 19:25:08,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:08,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:08,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:11,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:11,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:11,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62401839] [2024-06-27 19:25:11,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62401839] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:11,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:11,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:25:11,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322217163] [2024-06-27 19:25:11,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:11,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:25:11,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:11,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:25:11,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:25:11,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:11,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 250 transitions, 2244 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:11,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:11,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:11,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:11,807 INFO L124 PetriNetUnfolderBase]: 786/1410 cut-off events. [2024-06-27 19:25:11,807 INFO L125 PetriNetUnfolderBase]: For 112737/112740 co-relation queries the response was YES. [2024-06-27 19:25:11,815 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7389 conditions, 1410 events. 786/1410 cut-off events. For 112737/112740 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7647 event pairs, 138 based on Foata normal form. 2/1406 useless extension candidates. Maximal degree in co-relation 7237. Up to 1259 conditions per place. [2024-06-27 19:25:11,818 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 234 selfloop transitions, 31 changer transitions 0/267 dead transitions. [2024-06-27 19:25:11,818 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 319 places, 267 transitions, 2814 flow [2024-06-27 19:25:11,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 19:25:11,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 19:25:11,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 106 transitions. [2024-06-27 19:25:11,819 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33125 [2024-06-27 19:25:11,819 INFO L175 Difference]: Start difference. First operand has 310 places, 250 transitions, 2244 flow. Second operand 10 states and 106 transitions. [2024-06-27 19:25:11,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 319 places, 267 transitions, 2814 flow [2024-06-27 19:25:12,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 311 places, 267 transitions, 2706 flow, removed 23 selfloop flow, removed 8 redundant places. [2024-06-27 19:25:12,135 INFO L231 Difference]: Finished difference. Result has 312 places, 250 transitions, 2202 flow [2024-06-27 19:25:12,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2136, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=219, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2202, PETRI_PLACES=312, PETRI_TRANSITIONS=250} [2024-06-27 19:25:12,135 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 281 predicate places. [2024-06-27 19:25:12,135 INFO L495 AbstractCegarLoop]: Abstraction has has 312 places, 250 transitions, 2202 flow [2024-06-27 19:25:12,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:12,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:12,136 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:12,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 19:25:12,136 INFO L420 AbstractCegarLoop]: === Iteration 130 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:12,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:12,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1420289320, now seen corresponding path program 18 times [2024-06-27 19:25:12,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:12,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [56185997] [2024-06-27 19:25:12,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:12,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:16,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:16,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:16,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [56185997] [2024-06-27 19:25:16,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [56185997] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:16,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:16,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:25:16,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194001442] [2024-06-27 19:25:16,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:16,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:25:16,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:16,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:25:16,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:25:16,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:16,141 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 312 places, 250 transitions, 2202 flow. Second operand has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:16,141 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:16,141 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:16,141 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:16,920 INFO L124 PetriNetUnfolderBase]: 782/1404 cut-off events. [2024-06-27 19:25:16,921 INFO L125 PetriNetUnfolderBase]: For 99763/99766 co-relation queries the response was YES. [2024-06-27 19:25:16,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7003 conditions, 1404 events. 782/1404 cut-off events. For 99763/99766 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 7611 event pairs, 142 based on Foata normal form. 2/1400 useless extension candidates. Maximal degree in co-relation 6850. Up to 1243 conditions per place. [2024-06-27 19:25:16,933 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 231 selfloop transitions, 36 changer transitions 0/269 dead transitions. [2024-06-27 19:25:16,933 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 322 places, 269 transitions, 2780 flow [2024-06-27 19:25:16,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:16,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:16,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 19:25:16,934 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-27 19:25:16,934 INFO L175 Difference]: Start difference. First operand has 312 places, 250 transitions, 2202 flow. Second operand 11 states and 118 transitions. [2024-06-27 19:25:16,934 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 322 places, 269 transitions, 2780 flow [2024-06-27 19:25:17,323 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 269 transitions, 2595 flow, removed 33 selfloop flow, removed 9 redundant places. [2024-06-27 19:25:17,325 INFO L231 Difference]: Finished difference. Result has 314 places, 250 transitions, 2094 flow [2024-06-27 19:25:17,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2017, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=214, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2094, PETRI_PLACES=314, PETRI_TRANSITIONS=250} [2024-06-27 19:25:17,326 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-27 19:25:17,326 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 250 transitions, 2094 flow [2024-06-27 19:25:17,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.333333333333333) internal successors, (76), 12 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:17,326 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:17,326 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:17,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 19:25:17,327 INFO L420 AbstractCegarLoop]: === Iteration 131 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:17,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:17,327 INFO L85 PathProgramCache]: Analyzing trace with hash 2004590173, now seen corresponding path program 1 times [2024-06-27 19:25:17,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:17,328 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242011010] [2024-06-27 19:25:17,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:17,328 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:17,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:20,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:20,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:20,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242011010] [2024-06-27 19:25:20,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242011010] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:20,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:20,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:25:20,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450769446] [2024-06-27 19:25:20,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:20,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:25:20,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:20,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:25:20,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:25:20,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:20,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 250 transitions, 2094 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:20,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:20,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:20,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:21,392 INFO L124 PetriNetUnfolderBase]: 786/1411 cut-off events. [2024-06-27 19:25:21,392 INFO L125 PetriNetUnfolderBase]: For 100034/100034 co-relation queries the response was YES. [2024-06-27 19:25:21,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6891 conditions, 1411 events. 786/1411 cut-off events. For 100034/100034 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7688 event pairs, 168 based on Foata normal form. 2/1412 useless extension candidates. Maximal degree in co-relation 6737. Up to 1277 conditions per place. [2024-06-27 19:25:21,407 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 240 selfloop transitions, 30 changer transitions 0/272 dead transitions. [2024-06-27 19:25:21,407 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 272 transitions, 2711 flow [2024-06-27 19:25:21,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:21,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:21,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 19:25:21,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-27 19:25:21,408 INFO L175 Difference]: Start difference. First operand has 314 places, 250 transitions, 2094 flow. Second operand 11 states and 116 transitions. [2024-06-27 19:25:21,408 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 272 transitions, 2711 flow [2024-06-27 19:25:21,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 272 transitions, 2470 flow, removed 35 selfloop flow, removed 11 redundant places. [2024-06-27 19:25:21,750 INFO L231 Difference]: Finished difference. Result has 314 places, 251 transitions, 1941 flow [2024-06-27 19:25:21,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1853, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1941, PETRI_PLACES=314, PETRI_TRANSITIONS=251} [2024-06-27 19:25:21,750 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 283 predicate places. [2024-06-27 19:25:21,751 INFO L495 AbstractCegarLoop]: Abstraction has has 314 places, 251 transitions, 1941 flow [2024-06-27 19:25:21,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:21,751 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:21,751 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:21,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 19:25:21,751 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:21,751 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:21,751 INFO L85 PathProgramCache]: Analyzing trace with hash -1427380723, now seen corresponding path program 2 times [2024-06-27 19:25:21,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:21,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116552483] [2024-06-27 19:25:21,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:21,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:21,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:24,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:24,957 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116552483] [2024-06-27 19:25:24,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116552483] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:24,957 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:24,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:25:24,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662118782] [2024-06-27 19:25:24,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:24,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:25:24,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:24,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:25:24,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:25:25,129 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:25,132 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 314 places, 251 transitions, 1941 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:25,132 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:25,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:25,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:25,834 INFO L124 PetriNetUnfolderBase]: 790/1419 cut-off events. [2024-06-27 19:25:25,834 INFO L125 PetriNetUnfolderBase]: For 99253/99253 co-relation queries the response was YES. [2024-06-27 19:25:25,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6655 conditions, 1419 events. 790/1419 cut-off events. For 99253/99253 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7732 event pairs, 168 based on Foata normal form. 2/1420 useless extension candidates. Maximal degree in co-relation 6501. Up to 1285 conditions per place. [2024-06-27 19:25:25,849 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 242 selfloop transitions, 29 changer transitions 0/273 dead transitions. [2024-06-27 19:25:25,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 273 transitions, 2562 flow [2024-06-27 19:25:25,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:25,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:25,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 19:25:25,850 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-27 19:25:25,850 INFO L175 Difference]: Start difference. First operand has 314 places, 251 transitions, 1941 flow. Second operand 11 states and 115 transitions. [2024-06-27 19:25:25,850 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 273 transitions, 2562 flow [2024-06-27 19:25:26,151 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 273 transitions, 2484 flow, removed 10 selfloop flow, removed 9 redundant places. [2024-06-27 19:25:26,153 INFO L231 Difference]: Finished difference. Result has 316 places, 252 transitions, 1951 flow [2024-06-27 19:25:26,153 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1863, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=222, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1951, PETRI_PLACES=316, PETRI_TRANSITIONS=252} [2024-06-27 19:25:26,154 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 285 predicate places. [2024-06-27 19:25:26,154 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 252 transitions, 1951 flow [2024-06-27 19:25:26,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:26,154 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:26,154 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:26,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 19:25:26,154 INFO L420 AbstractCegarLoop]: === Iteration 133 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:26,154 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:26,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1427524873, now seen corresponding path program 3 times [2024-06-27 19:25:26,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:26,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235341337] [2024-06-27 19:25:26,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:26,155 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:29,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:29,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:29,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235341337] [2024-06-27 19:25:29,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235341337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:29,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:29,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:25:29,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846779072] [2024-06-27 19:25:29,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:29,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:25:29,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:29,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:25:29,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:25:29,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:29,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 252 transitions, 1951 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:29,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:29,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:29,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:30,005 INFO L124 PetriNetUnfolderBase]: 794/1427 cut-off events. [2024-06-27 19:25:30,005 INFO L125 PetriNetUnfolderBase]: For 101020/101020 co-relation queries the response was YES. [2024-06-27 19:25:30,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6702 conditions, 1427 events. 794/1427 cut-off events. For 101020/101020 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7786 event pairs, 168 based on Foata normal form. 2/1428 useless extension candidates. Maximal degree in co-relation 6547. Up to 1287 conditions per place. [2024-06-27 19:25:30,017 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 243 selfloop transitions, 29 changer transitions 0/274 dead transitions. [2024-06-27 19:25:30,017 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 274 transitions, 2576 flow [2024-06-27 19:25:30,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:30,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:30,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 19:25:30,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-27 19:25:30,018 INFO L175 Difference]: Start difference. First operand has 316 places, 252 transitions, 1951 flow. Second operand 11 states and 114 transitions. [2024-06-27 19:25:30,018 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 274 transitions, 2576 flow [2024-06-27 19:25:30,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 274 transitions, 2498 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 19:25:30,343 INFO L231 Difference]: Finished difference. Result has 318 places, 253 transitions, 1963 flow [2024-06-27 19:25:30,343 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1873, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=223, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1963, PETRI_PLACES=318, PETRI_TRANSITIONS=253} [2024-06-27 19:25:30,343 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-27 19:25:30,343 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 253 transitions, 1963 flow [2024-06-27 19:25:30,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:30,344 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:30,344 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:30,344 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 19:25:30,344 INFO L420 AbstractCegarLoop]: === Iteration 134 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:30,344 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:30,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1134820169, now seen corresponding path program 4 times [2024-06-27 19:25:30,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:30,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43537799] [2024-06-27 19:25:30,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:30,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:30,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:33,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:33,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:33,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43537799] [2024-06-27 19:25:33,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43537799] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:33,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:33,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:25:33,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886158571] [2024-06-27 19:25:33,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:33,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:25:33,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:33,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:25:33,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:25:33,470 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:33,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 253 transitions, 1963 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:33,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:33,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:33,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:34,213 INFO L124 PetriNetUnfolderBase]: 798/1435 cut-off events. [2024-06-27 19:25:34,213 INFO L125 PetriNetUnfolderBase]: For 102837/102837 co-relation queries the response was YES. [2024-06-27 19:25:34,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6755 conditions, 1435 events. 798/1435 cut-off events. For 102837/102837 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7843 event pairs, 168 based on Foata normal form. 2/1436 useless extension candidates. Maximal degree in co-relation 6599. Up to 1311 conditions per place. [2024-06-27 19:25:34,224 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 248 selfloop transitions, 25 changer transitions 0/275 dead transitions. [2024-06-27 19:25:34,224 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 275 transitions, 2592 flow [2024-06-27 19:25:34,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:34,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:34,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-06-27 19:25:34,226 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3210227272727273 [2024-06-27 19:25:34,226 INFO L175 Difference]: Start difference. First operand has 318 places, 253 transitions, 1963 flow. Second operand 11 states and 113 transitions. [2024-06-27 19:25:34,226 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 275 transitions, 2592 flow [2024-06-27 19:25:34,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 275 transitions, 2512 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 19:25:34,550 INFO L231 Difference]: Finished difference. Result has 320 places, 254 transitions, 1967 flow [2024-06-27 19:25:34,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1883, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1967, PETRI_PLACES=320, PETRI_TRANSITIONS=254} [2024-06-27 19:25:34,550 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-27 19:25:34,550 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 254 transitions, 1967 flow [2024-06-27 19:25:34,551 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:34,551 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:34,551 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:34,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 19:25:34,551 INFO L420 AbstractCegarLoop]: === Iteration 135 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:34,551 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:34,552 INFO L85 PathProgramCache]: Analyzing trace with hash -799683827, now seen corresponding path program 5 times [2024-06-27 19:25:34,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:34,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471650021] [2024-06-27 19:25:34,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:34,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:34,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:37,514 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:37,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:37,515 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471650021] [2024-06-27 19:25:37,515 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471650021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:37,515 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:37,515 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:25:37,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175151019] [2024-06-27 19:25:37,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:37,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:25:37,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:37,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:25:37,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:25:37,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:37,666 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 254 transitions, 1967 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:37,666 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:37,666 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:37,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:38,337 INFO L124 PetriNetUnfolderBase]: 802/1443 cut-off events. [2024-06-27 19:25:38,337 INFO L125 PetriNetUnfolderBase]: For 102698/102698 co-relation queries the response was YES. [2024-06-27 19:25:38,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6794 conditions, 1443 events. 802/1443 cut-off events. For 102698/102698 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 7891 event pairs, 162 based on Foata normal form. 2/1444 useless extension candidates. Maximal degree in co-relation 6637. Up to 1315 conditions per place. [2024-06-27 19:25:38,349 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 252 selfloop transitions, 22 changer transitions 0/276 dead transitions. [2024-06-27 19:25:38,349 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 276 transitions, 2600 flow [2024-06-27 19:25:38,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:38,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:38,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 111 transitions. [2024-06-27 19:25:38,350 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3153409090909091 [2024-06-27 19:25:38,350 INFO L175 Difference]: Start difference. First operand has 320 places, 254 transitions, 1967 flow. Second operand 11 states and 111 transitions. [2024-06-27 19:25:38,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 276 transitions, 2600 flow [2024-06-27 19:25:38,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 276 transitions, 2526 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 19:25:38,677 INFO L231 Difference]: Finished difference. Result has 322 places, 255 transitions, 1973 flow [2024-06-27 19:25:38,677 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1893, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1973, PETRI_PLACES=322, PETRI_TRANSITIONS=255} [2024-06-27 19:25:38,677 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-27 19:25:38,678 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 255 transitions, 1973 flow [2024-06-27 19:25:38,678 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:38,678 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:38,678 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:38,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 19:25:38,678 INFO L420 AbstractCegarLoop]: === Iteration 136 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:38,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:38,678 INFO L85 PathProgramCache]: Analyzing trace with hash 423175919, now seen corresponding path program 1 times [2024-06-27 19:25:38,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:38,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551746587] [2024-06-27 19:25:38,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:38,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:42,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:42,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:42,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551746587] [2024-06-27 19:25:42,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551746587] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:42,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:42,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:25:42,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268476431] [2024-06-27 19:25:42,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:42,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:25:42,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:42,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:25:42,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:25:42,864 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:42,864 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 255 transitions, 1973 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:42,864 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:42,864 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:42,864 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:43,716 INFO L124 PetriNetUnfolderBase]: 818/1479 cut-off events. [2024-06-27 19:25:43,717 INFO L125 PetriNetUnfolderBase]: For 166275/166275 co-relation queries the response was YES. [2024-06-27 19:25:43,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6905 conditions, 1479 events. 818/1479 cut-off events. For 166275/166275 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8161 event pairs, 184 based on Foata normal form. 10/1488 useless extension candidates. Maximal degree in co-relation 6747. Up to 1295 conditions per place. [2024-06-27 19:25:43,740 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 242 selfloop transitions, 29 changer transitions 9/282 dead transitions. [2024-06-27 19:25:43,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 282 transitions, 2636 flow [2024-06-27 19:25:43,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:25:43,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:25:43,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-27 19:25:43,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-27 19:25:43,742 INFO L175 Difference]: Start difference. First operand has 322 places, 255 transitions, 1973 flow. Second operand 12 states and 129 transitions. [2024-06-27 19:25:43,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 282 transitions, 2636 flow [2024-06-27 19:25:44,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 324 places, 282 transitions, 2566 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 19:25:44,203 INFO L231 Difference]: Finished difference. Result has 325 places, 252 transitions, 1945 flow [2024-06-27 19:25:44,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1903, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=255, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=226, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1945, PETRI_PLACES=325, PETRI_TRANSITIONS=252} [2024-06-27 19:25:44,203 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 294 predicate places. [2024-06-27 19:25:44,203 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 252 transitions, 1945 flow [2024-06-27 19:25:44,203 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:44,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:44,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:44,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 19:25:44,204 INFO L420 AbstractCegarLoop]: === Iteration 137 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:44,205 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:44,205 INFO L85 PathProgramCache]: Analyzing trace with hash -58707653, now seen corresponding path program 6 times [2024-06-27 19:25:44,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:44,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114249339] [2024-06-27 19:25:44,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:44,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:44,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:47,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:47,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:47,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114249339] [2024-06-27 19:25:47,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114249339] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:47,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:47,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:25:47,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121865666] [2024-06-27 19:25:47,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:47,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:25:47,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:47,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:25:47,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:25:47,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:47,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 325 places, 252 transitions, 1945 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:47,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:47,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:47,709 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:48,616 INFO L124 PetriNetUnfolderBase]: 812/1472 cut-off events. [2024-06-27 19:25:48,616 INFO L125 PetriNetUnfolderBase]: For 183879/183879 co-relation queries the response was YES. [2024-06-27 19:25:48,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6901 conditions, 1472 events. 812/1472 cut-off events. For 183879/183879 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 8117 event pairs, 166 based on Foata normal form. 12/1483 useless extension candidates. Maximal degree in co-relation 6742. Up to 1241 conditions per place. [2024-06-27 19:25:48,630 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 226 selfloop transitions, 36 changer transitions 14/278 dead transitions. [2024-06-27 19:25:48,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 278 transitions, 2623 flow [2024-06-27 19:25:48,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:48,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:48,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 19:25:48,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-27 19:25:48,631 INFO L175 Difference]: Start difference. First operand has 325 places, 252 transitions, 1945 flow. Second operand 11 states and 124 transitions. [2024-06-27 19:25:48,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 333 places, 278 transitions, 2623 flow [2024-06-27 19:25:49,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 278 transitions, 2559 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 19:25:49,009 INFO L231 Difference]: Finished difference. Result has 322 places, 247 transitions, 1923 flow [2024-06-27 19:25:49,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1881, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=216, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1923, PETRI_PLACES=322, PETRI_TRANSITIONS=247} [2024-06-27 19:25:49,010 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-27 19:25:49,010 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 247 transitions, 1923 flow [2024-06-27 19:25:49,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:49,010 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:49,010 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:49,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 19:25:49,011 INFO L420 AbstractCegarLoop]: === Iteration 138 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:49,011 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:49,011 INFO L85 PathProgramCache]: Analyzing trace with hash -58713233, now seen corresponding path program 7 times [2024-06-27 19:25:49,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:49,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973912298] [2024-06-27 19:25:49,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:49,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:49,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:52,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:52,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:52,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973912298] [2024-06-27 19:25:52,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973912298] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:52,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:52,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:25:52,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999528571] [2024-06-27 19:25:52,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:52,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:25:52,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:52,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:25:52,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:25:52,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:52,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 247 transitions, 1923 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:52,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:52,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:52,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:53,380 INFO L124 PetriNetUnfolderBase]: 780/1412 cut-off events. [2024-06-27 19:25:53,380 INFO L125 PetriNetUnfolderBase]: For 106952/106952 co-relation queries the response was YES. [2024-06-27 19:25:53,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6660 conditions, 1412 events. 780/1412 cut-off events. For 106952/106952 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 7725 event pairs, 162 based on Foata normal form. 2/1413 useless extension candidates. Maximal degree in co-relation 6502. Up to 1235 conditions per place. [2024-06-27 19:25:53,391 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 229 selfloop transitions, 38 changer transitions 0/269 dead transitions. [2024-06-27 19:25:53,391 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 269 transitions, 2539 flow [2024-06-27 19:25:53,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:53,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:53,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 19:25:53,392 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-27 19:25:53,392 INFO L175 Difference]: Start difference. First operand has 322 places, 247 transitions, 1923 flow. Second operand 11 states and 117 transitions. [2024-06-27 19:25:53,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 269 transitions, 2539 flow [2024-06-27 19:25:53,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 317 places, 269 transitions, 2461 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 19:25:53,743 INFO L231 Difference]: Finished difference. Result has 318 places, 248 transitions, 1959 flow [2024-06-27 19:25:53,744 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1845, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1959, PETRI_PLACES=318, PETRI_TRANSITIONS=248} [2024-06-27 19:25:53,744 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 287 predicate places. [2024-06-27 19:25:53,744 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 248 transitions, 1959 flow [2024-06-27 19:25:53,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:53,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:53,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:53,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable137 [2024-06-27 19:25:53,745 INFO L420 AbstractCegarLoop]: === Iteration 139 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:53,745 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:53,745 INFO L85 PathProgramCache]: Analyzing trace with hash -594087185, now seen corresponding path program 8 times [2024-06-27 19:25:53,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:53,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022803056] [2024-06-27 19:25:53,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:53,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:53,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:25:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:25:57,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:25:57,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022803056] [2024-06-27 19:25:57,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022803056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:25:57,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:25:57,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:25:57,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917573568] [2024-06-27 19:25:57,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:25:57,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:25:57,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:25:57,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:25:57,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:25:57,147 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:25:57,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 248 transitions, 1959 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:57,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:25:57,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:25:57,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:25:57,943 INFO L124 PetriNetUnfolderBase]: 784/1420 cut-off events. [2024-06-27 19:25:57,944 INFO L125 PetriNetUnfolderBase]: For 104231/104231 co-relation queries the response was YES. [2024-06-27 19:25:57,955 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6732 conditions, 1420 events. 784/1420 cut-off events. For 104231/104231 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 7803 event pairs, 160 based on Foata normal form. 2/1421 useless extension candidates. Maximal degree in co-relation 6576. Up to 1243 conditions per place. [2024-06-27 19:25:57,958 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 230 selfloop transitions, 38 changer transitions 0/270 dead transitions. [2024-06-27 19:25:57,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 328 places, 270 transitions, 2579 flow [2024-06-27 19:25:57,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:25:57,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:25:57,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 19:25:57,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-27 19:25:57,960 INFO L175 Difference]: Start difference. First operand has 318 places, 248 transitions, 1959 flow. Second operand 11 states and 117 transitions. [2024-06-27 19:25:57,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 328 places, 270 transitions, 2579 flow [2024-06-27 19:25:58,331 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 319 places, 270 transitions, 2475 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 19:25:58,334 INFO L231 Difference]: Finished difference. Result has 320 places, 249 transitions, 1971 flow [2024-06-27 19:25:58,334 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1855, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1971, PETRI_PLACES=320, PETRI_TRANSITIONS=249} [2024-06-27 19:25:58,334 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 289 predicate places. [2024-06-27 19:25:58,334 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 249 transitions, 1971 flow [2024-06-27 19:25:58,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:25:58,334 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:25:58,334 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:25:58,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable138 [2024-06-27 19:25:58,335 INFO L420 AbstractCegarLoop]: === Iteration 140 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:25:58,335 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:25:58,335 INFO L85 PathProgramCache]: Analyzing trace with hash -394635665, now seen corresponding path program 9 times [2024-06-27 19:25:58,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:25:58,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106041180] [2024-06-27 19:25:58,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:25:58,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:25:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:01,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:26:01,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:01,561 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106041180] [2024-06-27 19:26:01,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106041180] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:01,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:01,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:26:01,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919932766] [2024-06-27 19:26:01,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:01,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:26:01,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:01,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:26:01,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:26:01,699 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:01,699 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 249 transitions, 1971 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:01,699 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:01,699 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:01,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:02,417 INFO L124 PetriNetUnfolderBase]: 788/1428 cut-off events. [2024-06-27 19:26:02,417 INFO L125 PetriNetUnfolderBase]: For 106264/106264 co-relation queries the response was YES. [2024-06-27 19:26:02,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6785 conditions, 1428 events. 788/1428 cut-off events. For 106264/106264 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 7871 event pairs, 160 based on Foata normal form. 2/1429 useless extension candidates. Maximal degree in co-relation 6628. Up to 1212 conditions per place. [2024-06-27 19:26:02,439 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 223 selfloop transitions, 47 changer transitions 0/272 dead transitions. [2024-06-27 19:26:02,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 272 transitions, 2601 flow [2024-06-27 19:26:02,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:26:02,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:26:02,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 19:26:02,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:26:02,440 INFO L175 Difference]: Start difference. First operand has 320 places, 249 transitions, 1971 flow. Second operand 11 states and 121 transitions. [2024-06-27 19:26:02,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 330 places, 272 transitions, 2601 flow [2024-06-27 19:26:02,930 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 321 places, 272 transitions, 2495 flow, removed 16 selfloop flow, removed 9 redundant places. [2024-06-27 19:26:02,933 INFO L231 Difference]: Finished difference. Result has 322 places, 250 transitions, 2001 flow [2024-06-27 19:26:02,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1865, PETRI_DIFFERENCE_MINUEND_PLACES=311, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2001, PETRI_PLACES=322, PETRI_TRANSITIONS=250} [2024-06-27 19:26:02,933 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 291 predicate places. [2024-06-27 19:26:02,933 INFO L495 AbstractCegarLoop]: Abstraction has has 322 places, 250 transitions, 2001 flow [2024-06-27 19:26:02,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:02,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:26:02,933 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:02,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable139 [2024-06-27 19:26:02,933 INFO L420 AbstractCegarLoop]: === Iteration 141 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:26:02,934 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:26:02,934 INFO L85 PathProgramCache]: Analyzing trace with hash -387284015, now seen corresponding path program 10 times [2024-06-27 19:26:02,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:26:02,934 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850489688] [2024-06-27 19:26:02,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:26:02,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:26:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:06,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:26:06,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:06,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850489688] [2024-06-27 19:26:06,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850489688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:06,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:06,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:26:06,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338027969] [2024-06-27 19:26:06,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:06,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:26:06,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:06,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:26:06,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:26:06,733 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:06,733 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 322 places, 250 transitions, 2001 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:06,733 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:06,733 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:06,733 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:07,698 INFO L124 PetriNetUnfolderBase]: 792/1436 cut-off events. [2024-06-27 19:26:07,698 INFO L125 PetriNetUnfolderBase]: For 108097/108097 co-relation queries the response was YES. [2024-06-27 19:26:07,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6860 conditions, 1436 events. 792/1436 cut-off events. For 108097/108097 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 7925 event pairs, 160 based on Foata normal form. 2/1437 useless extension candidates. Maximal degree in co-relation 6702. Up to 1185 conditions per place. [2024-06-27 19:26:07,713 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 218 selfloop transitions, 54 changer transitions 0/274 dead transitions. [2024-06-27 19:26:07,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 274 transitions, 2641 flow [2024-06-27 19:26:07,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:26:07,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:26:07,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 19:26:07,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-27 19:26:07,714 INFO L175 Difference]: Start difference. First operand has 322 places, 250 transitions, 2001 flow. Second operand 11 states and 123 transitions. [2024-06-27 19:26:07,714 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 274 transitions, 2641 flow [2024-06-27 19:26:08,101 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 323 places, 274 transitions, 2515 flow, removed 17 selfloop flow, removed 9 redundant places. [2024-06-27 19:26:08,104 INFO L231 Difference]: Finished difference. Result has 324 places, 251 transitions, 2027 flow [2024-06-27 19:26:08,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1875, PETRI_DIFFERENCE_MINUEND_PLACES=313, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=196, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2027, PETRI_PLACES=324, PETRI_TRANSITIONS=251} [2024-06-27 19:26:08,104 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 293 predicate places. [2024-06-27 19:26:08,104 INFO L495 AbstractCegarLoop]: Abstraction has has 324 places, 251 transitions, 2027 flow [2024-06-27 19:26:08,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:08,104 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:26:08,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:08,104 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable140 [2024-06-27 19:26:08,105 INFO L420 AbstractCegarLoop]: === Iteration 142 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:26:08,105 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:26:08,105 INFO L85 PathProgramCache]: Analyzing trace with hash -394641245, now seen corresponding path program 11 times [2024-06-27 19:26:08,105 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:26:08,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696894434] [2024-06-27 19:26:08,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:26:08,105 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:26:08,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:11,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:26:11,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:11,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696894434] [2024-06-27 19:26:11,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696894434] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:11,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:11,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:26:11,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886100023] [2024-06-27 19:26:11,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:11,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:26:11,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:11,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:26:11,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:26:11,528 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:11,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 251 transitions, 2027 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:11,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:11,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:11,529 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:12,672 INFO L124 PetriNetUnfolderBase]: 825/1503 cut-off events. [2024-06-27 19:26:12,672 INFO L125 PetriNetUnfolderBase]: For 185398/185398 co-relation queries the response was YES. [2024-06-27 19:26:12,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8395 conditions, 1503 events. 825/1503 cut-off events. For 185398/185398 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 8329 event pairs, 173 based on Foata normal form. 2/1504 useless extension candidates. Maximal degree in co-relation 8236. Up to 1192 conditions per place. [2024-06-27 19:26:12,684 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 230 selfloop transitions, 49 changer transitions 0/281 dead transitions. [2024-06-27 19:26:12,684 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 281 transitions, 2977 flow [2024-06-27 19:26:12,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:26:12,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:26:12,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-27 19:26:12,685 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-27 19:26:12,685 INFO L175 Difference]: Start difference. First operand has 324 places, 251 transitions, 2027 flow. Second operand 12 states and 136 transitions. [2024-06-27 19:26:12,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 281 transitions, 2977 flow [2024-06-27 19:26:13,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 281 transitions, 2835 flow, removed 18 selfloop flow, removed 9 redundant places. [2024-06-27 19:26:13,208 INFO L231 Difference]: Finished difference. Result has 327 places, 252 transitions, 2029 flow [2024-06-27 19:26:13,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1885, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2029, PETRI_PLACES=327, PETRI_TRANSITIONS=252} [2024-06-27 19:26:13,208 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 296 predicate places. [2024-06-27 19:26:13,208 INFO L495 AbstractCegarLoop]: Abstraction has has 327 places, 252 transitions, 2029 flow [2024-06-27 19:26:13,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:13,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:26:13,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:13,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable141 [2024-06-27 19:26:13,209 INFO L420 AbstractCegarLoop]: === Iteration 143 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:26:13,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:26:13,209 INFO L85 PathProgramCache]: Analyzing trace with hash -387016609, now seen corresponding path program 2 times [2024-06-27 19:26:13,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:26:13,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794319631] [2024-06-27 19:26:13,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:26:13,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:26:13,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:16,951 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:26:16,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:16,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794319631] [2024-06-27 19:26:16,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794319631] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:16,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:16,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:26:16,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503908222] [2024-06-27 19:26:16,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:16,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:26:16,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:16,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:26:16,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:26:17,113 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:17,113 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 252 transitions, 2029 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:17,113 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:17,113 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:17,113 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:18,197 INFO L124 PetriNetUnfolderBase]: 841/1539 cut-off events. [2024-06-27 19:26:18,197 INFO L125 PetriNetUnfolderBase]: For 249037/249037 co-relation queries the response was YES. [2024-06-27 19:26:18,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8488 conditions, 1539 events. 841/1539 cut-off events. For 249037/249037 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 8587 event pairs, 179 based on Foata normal form. 10/1548 useless extension candidates. Maximal degree in co-relation 8328. Up to 1209 conditions per place. [2024-06-27 19:26:18,209 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 209 selfloop transitions, 59 changer transitions 12/282 dead transitions. [2024-06-27 19:26:18,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 338 places, 282 transitions, 2699 flow [2024-06-27 19:26:18,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:26:18,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:26:18,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-27 19:26:18,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-27 19:26:18,210 INFO L175 Difference]: Start difference. First operand has 327 places, 252 transitions, 2029 flow. Second operand 12 states and 137 transitions. [2024-06-27 19:26:18,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 338 places, 282 transitions, 2699 flow [2024-06-27 19:26:18,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 328 places, 282 transitions, 2565 flow, removed 19 selfloop flow, removed 10 redundant places. [2024-06-27 19:26:18,804 INFO L231 Difference]: Finished difference. Result has 329 places, 248 transitions, 1981 flow [2024-06-27 19:26:18,804 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1895, PETRI_DIFFERENCE_MINUEND_PLACES=317, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1981, PETRI_PLACES=329, PETRI_TRANSITIONS=248} [2024-06-27 19:26:18,804 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 298 predicate places. [2024-06-27 19:26:18,804 INFO L495 AbstractCegarLoop]: Abstraction has has 329 places, 248 transitions, 1981 flow [2024-06-27 19:26:18,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:18,804 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:26:18,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:18,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable142 [2024-06-27 19:26:18,804 INFO L420 AbstractCegarLoop]: === Iteration 144 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:26:18,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:26:18,805 INFO L85 PathProgramCache]: Analyzing trace with hash 363933337, now seen corresponding path program 3 times [2024-06-27 19:26:18,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:26:18,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071590732] [2024-06-27 19:26:18,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:26:18,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:26:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:23,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:26:23,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:23,728 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071590732] [2024-06-27 19:26:23,728 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071590732] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:23,728 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:23,728 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:26:23,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606873821] [2024-06-27 19:26:23,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:23,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:26:23,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:23,729 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:26:23,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:26:23,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:23,869 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 329 places, 248 transitions, 1981 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:23,869 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:23,869 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:23,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:25,011 INFO L124 PetriNetUnfolderBase]: 914/1659 cut-off events. [2024-06-27 19:26:25,012 INFO L125 PetriNetUnfolderBase]: For 174526/174526 co-relation queries the response was YES. [2024-06-27 19:26:25,025 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7754 conditions, 1659 events. 914/1659 cut-off events. For 174526/174526 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9391 event pairs, 190 based on Foata normal form. 10/1664 useless extension candidates. Maximal degree in co-relation 7593. Up to 1391 conditions per place. [2024-06-27 19:26:25,028 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 261 selfloop transitions, 50 changer transitions 11/324 dead transitions. [2024-06-27 19:26:25,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 337 places, 324 transitions, 3150 flow [2024-06-27 19:26:25,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:26:25,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:26:25,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 142 transitions. [2024-06-27 19:26:25,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3697916666666667 [2024-06-27 19:26:25,029 INFO L175 Difference]: Start difference. First operand has 329 places, 248 transitions, 1981 flow. Second operand 12 states and 142 transitions. [2024-06-27 19:26:25,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 337 places, 324 transitions, 3150 flow [2024-06-27 19:26:25,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 324 transitions, 2912 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 19:26:25,527 INFO L231 Difference]: Finished difference. Result has 334 places, 282 transitions, 2315 flow [2024-06-27 19:26:25,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1828, PETRI_DIFFERENCE_MINUEND_PLACES=315, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2315, PETRI_PLACES=334, PETRI_TRANSITIONS=282} [2024-06-27 19:26:25,528 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 303 predicate places. [2024-06-27 19:26:25,528 INFO L495 AbstractCegarLoop]: Abstraction has has 334 places, 282 transitions, 2315 flow [2024-06-27 19:26:25,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:25,528 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:26:25,528 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:25,528 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable143 [2024-06-27 19:26:25,529 INFO L420 AbstractCegarLoop]: === Iteration 145 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:26:25,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:26:25,529 INFO L85 PathProgramCache]: Analyzing trace with hash -1881247303, now seen corresponding path program 4 times [2024-06-27 19:26:25,529 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:26:25,529 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238903547] [2024-06-27 19:26:25,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:26:25,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:26:25,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:29,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:26:29,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:29,518 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238903547] [2024-06-27 19:26:29,518 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238903547] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:29,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:29,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:26:29,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80294278] [2024-06-27 19:26:29,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:29,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:26:29,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:29,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:26:29,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:26:29,756 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:29,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 334 places, 282 transitions, 2315 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:29,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:29,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:29,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:30,752 INFO L124 PetriNetUnfolderBase]: 910/1655 cut-off events. [2024-06-27 19:26:30,752 INFO L125 PetriNetUnfolderBase]: For 174855/174855 co-relation queries the response was YES. [2024-06-27 19:26:30,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7730 conditions, 1655 events. 910/1655 cut-off events. For 174855/174855 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 9398 event pairs, 178 based on Foata normal form. 10/1664 useless extension candidates. Maximal degree in co-relation 7562. Up to 1402 conditions per place. [2024-06-27 19:26:30,771 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 262 selfloop transitions, 47 changer transitions 11/322 dead transitions. [2024-06-27 19:26:30,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 322 transitions, 3130 flow [2024-06-27 19:26:30,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:26:30,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:26:30,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 145 transitions. [2024-06-27 19:26:30,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3485576923076923 [2024-06-27 19:26:30,772 INFO L175 Difference]: Start difference. First operand has 334 places, 282 transitions, 2315 flow. Second operand 13 states and 145 transitions. [2024-06-27 19:26:30,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 322 transitions, 3130 flow [2024-06-27 19:26:31,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 322 transitions, 3085 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-06-27 19:26:31,250 INFO L231 Difference]: Finished difference. Result has 343 places, 283 transitions, 2397 flow [2024-06-27 19:26:31,250 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2270, PETRI_DIFFERENCE_MINUEND_PLACES=328, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=282, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2397, PETRI_PLACES=343, PETRI_TRANSITIONS=283} [2024-06-27 19:26:31,250 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-27 19:26:31,250 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 283 transitions, 2397 flow [2024-06-27 19:26:31,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:31,250 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:26:31,250 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:31,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable144 [2024-06-27 19:26:31,251 INFO L420 AbstractCegarLoop]: === Iteration 146 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:26:31,251 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:26:31,251 INFO L85 PathProgramCache]: Analyzing trace with hash -270584389, now seen corresponding path program 5 times [2024-06-27 19:26:31,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:26:31,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076572857] [2024-06-27 19:26:31,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:26:31,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:26:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:35,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:26:35,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:35,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076572857] [2024-06-27 19:26:35,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076572857] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:35,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:35,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:26:35,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730183070] [2024-06-27 19:26:35,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:35,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:26:35,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:35,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:26:35,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:26:35,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:35,244 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 283 transitions, 2397 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:35,244 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:35,244 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:35,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:36,274 INFO L124 PetriNetUnfolderBase]: 904/1649 cut-off events. [2024-06-27 19:26:36,274 INFO L125 PetriNetUnfolderBase]: For 175150/175150 co-relation queries the response was YES. [2024-06-27 19:26:36,288 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7773 conditions, 1649 events. 904/1649 cut-off events. For 175150/175150 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 9366 event pairs, 176 based on Foata normal form. 10/1658 useless extension candidates. Maximal degree in co-relation 7603. Up to 1355 conditions per place. [2024-06-27 19:26:36,292 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 256 selfloop transitions, 54 changer transitions 9/321 dead transitions. [2024-06-27 19:26:36,292 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 321 transitions, 3190 flow [2024-06-27 19:26:36,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:26:36,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:26:36,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 148 transitions. [2024-06-27 19:26:36,293 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3557692307692308 [2024-06-27 19:26:36,293 INFO L175 Difference]: Start difference. First operand has 343 places, 283 transitions, 2397 flow. Second operand 13 states and 148 transitions. [2024-06-27 19:26:36,293 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 321 transitions, 3190 flow [2024-06-27 19:26:36,742 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 321 transitions, 3055 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-27 19:26:36,744 INFO L231 Difference]: Finished difference. Result has 344 places, 281 transitions, 2360 flow [2024-06-27 19:26:36,745 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2262, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2360, PETRI_PLACES=344, PETRI_TRANSITIONS=281} [2024-06-27 19:26:36,745 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-27 19:26:36,745 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 281 transitions, 2360 flow [2024-06-27 19:26:36,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:36,745 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:26:36,745 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:36,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable145 [2024-06-27 19:26:36,746 INFO L420 AbstractCegarLoop]: === Iteration 147 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:26:36,747 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:26:36,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1351128443, now seen corresponding path program 6 times [2024-06-27 19:26:36,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:26:36,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957272558] [2024-06-27 19:26:36,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:26:36,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:26:36,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:40,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:26:40,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:40,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957272558] [2024-06-27 19:26:40,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957272558] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:40,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:40,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:26:40,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431738826] [2024-06-27 19:26:40,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:40,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:26:40,210 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:40,210 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:26:40,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:26:40,422 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:40,422 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 281 transitions, 2360 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:40,422 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:40,422 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:40,422 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:41,494 INFO L124 PetriNetUnfolderBase]: 957/1760 cut-off events. [2024-06-27 19:26:41,494 INFO L125 PetriNetUnfolderBase]: For 253256/253256 co-relation queries the response was YES. [2024-06-27 19:26:41,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9699 conditions, 1760 events. 957/1760 cut-off events. For 253256/253256 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 10166 event pairs, 196 based on Foata normal form. 8/1767 useless extension candidates. Maximal degree in co-relation 9533. Up to 1353 conditions per place. [2024-06-27 19:26:41,513 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 262 selfloop transitions, 54 changer transitions 12/330 dead transitions. [2024-06-27 19:26:41,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 330 transitions, 3545 flow [2024-06-27 19:26:41,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:26:41,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:26:41,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-27 19:26:41,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 19:26:41,515 INFO L175 Difference]: Start difference. First operand has 344 places, 281 transitions, 2360 flow. Second operand 12 states and 144 transitions. [2024-06-27 19:26:41,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 330 transitions, 3545 flow [2024-06-27 19:26:42,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 330 transitions, 3408 flow, removed 12 selfloop flow, removed 12 redundant places. [2024-06-27 19:26:42,137 INFO L231 Difference]: Finished difference. Result has 344 places, 284 transitions, 2418 flow [2024-06-27 19:26:42,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2227, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2418, PETRI_PLACES=344, PETRI_TRANSITIONS=284} [2024-06-27 19:26:42,138 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-27 19:26:42,138 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 284 transitions, 2418 flow [2024-06-27 19:26:42,138 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:42,138 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:26:42,138 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:42,138 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable146 [2024-06-27 19:26:42,138 INFO L420 AbstractCegarLoop]: === Iteration 148 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:26:42,139 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:26:42,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1992250919, now seen corresponding path program 12 times [2024-06-27 19:26:42,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:26:42,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559703395] [2024-06-27 19:26:42,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:26:42,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:26:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:45,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:26:45,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:45,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559703395] [2024-06-27 19:26:45,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559703395] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:45,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:45,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:26:45,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175387653] [2024-06-27 19:26:45,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:45,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:26:45,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:45,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:26:45,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:26:45,397 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:45,397 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 284 transitions, 2418 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:45,397 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:45,398 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:45,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:46,256 INFO L124 PetriNetUnfolderBase]: 919/1686 cut-off events. [2024-06-27 19:26:46,256 INFO L125 PetriNetUnfolderBase]: For 188616/188616 co-relation queries the response was YES. [2024-06-27 19:26:46,271 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9153 conditions, 1686 events. 919/1686 cut-off events. For 188616/188616 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9632 event pairs, 199 based on Foata normal form. 2/1687 useless extension candidates. Maximal degree in co-relation 8987. Up to 1551 conditions per place. [2024-06-27 19:26:46,275 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 274 selfloop transitions, 34 changer transitions 0/310 dead transitions. [2024-06-27 19:26:46,275 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 310 transitions, 3109 flow [2024-06-27 19:26:46,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:26:46,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:26:46,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-27 19:26:46,276 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-27 19:26:46,276 INFO L175 Difference]: Start difference. First operand has 344 places, 284 transitions, 2418 flow. Second operand 12 states and 129 transitions. [2024-06-27 19:26:46,276 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 310 transitions, 3109 flow [2024-06-27 19:26:46,849 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 310 transitions, 3012 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 19:26:46,852 INFO L231 Difference]: Finished difference. Result has 347 places, 286 transitions, 2425 flow [2024-06-27 19:26:46,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2321, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=284, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=250, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2425, PETRI_PLACES=347, PETRI_TRANSITIONS=286} [2024-06-27 19:26:46,852 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-27 19:26:46,853 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 286 transitions, 2425 flow [2024-06-27 19:26:46,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:46,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:26:46,853 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:46,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable147 [2024-06-27 19:26:46,853 INFO L420 AbstractCegarLoop]: === Iteration 149 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:26:46,853 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:26:46,853 INFO L85 PathProgramCache]: Analyzing trace with hash -1474059379, now seen corresponding path program 13 times [2024-06-27 19:26:46,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:26:46,853 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823776491] [2024-06-27 19:26:46,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:26:46,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:26:46,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:50,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:26:50,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:50,020 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823776491] [2024-06-27 19:26:50,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823776491] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:50,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:50,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:26:50,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293234318] [2024-06-27 19:26:50,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:50,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:26:50,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:50,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:26:50,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:26:50,246 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:50,246 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 286 transitions, 2425 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:50,246 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:50,246 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:50,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:51,045 INFO L124 PetriNetUnfolderBase]: 927/1702 cut-off events. [2024-06-27 19:26:51,045 INFO L125 PetriNetUnfolderBase]: For 189413/189413 co-relation queries the response was YES. [2024-06-27 19:26:51,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9262 conditions, 1702 events. 927/1702 cut-off events. For 189413/189413 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 9758 event pairs, 199 based on Foata normal form. 2/1703 useless extension candidates. Maximal degree in co-relation 9095. Up to 1567 conditions per place. [2024-06-27 19:26:51,064 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 277 selfloop transitions, 33 changer transitions 0/312 dead transitions. [2024-06-27 19:26:51,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 312 transitions, 3151 flow [2024-06-27 19:26:51,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:26:51,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:26:51,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-06-27 19:26:51,065 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-06-27 19:26:51,066 INFO L175 Difference]: Start difference. First operand has 347 places, 286 transitions, 2425 flow. Second operand 12 states and 128 transitions. [2024-06-27 19:26:51,066 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 312 transitions, 3151 flow [2024-06-27 19:26:51,706 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 352 places, 312 transitions, 3058 flow, removed 20 selfloop flow, removed 6 redundant places. [2024-06-27 19:26:51,708 INFO L231 Difference]: Finished difference. Result has 354 places, 288 transitions, 2455 flow [2024-06-27 19:26:51,708 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2332, PETRI_DIFFERENCE_MINUEND_PLACES=341, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=286, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2455, PETRI_PLACES=354, PETRI_TRANSITIONS=288} [2024-06-27 19:26:51,709 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 323 predicate places. [2024-06-27 19:26:51,709 INFO L495 AbstractCegarLoop]: Abstraction has has 354 places, 288 transitions, 2455 flow [2024-06-27 19:26:51,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:51,709 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:26:51,709 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:51,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable148 [2024-06-27 19:26:51,709 INFO L420 AbstractCegarLoop]: === Iteration 150 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:26:51,709 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:26:51,709 INFO L85 PathProgramCache]: Analyzing trace with hash -1474203529, now seen corresponding path program 14 times [2024-06-27 19:26:51,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:26:51,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1426507493] [2024-06-27 19:26:51,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:26:51,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:26:51,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:54,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:26:54,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:54,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1426507493] [2024-06-27 19:26:54,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1426507493] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:54,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:54,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:26:54,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452632982] [2024-06-27 19:26:54,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:54,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:26:54,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:54,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:26:54,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:26:54,702 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:54,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 354 places, 288 transitions, 2455 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:54,703 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:54,703 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:54,703 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:26:55,474 INFO L124 PetriNetUnfolderBase]: 939/1726 cut-off events. [2024-06-27 19:26:55,475 INFO L125 PetriNetUnfolderBase]: For 192546/192546 co-relation queries the response was YES. [2024-06-27 19:26:55,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9384 conditions, 1726 events. 939/1726 cut-off events. For 192546/192546 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9972 event pairs, 201 based on Foata normal form. 2/1727 useless extension candidates. Maximal degree in co-relation 9215. Up to 1591 conditions per place. [2024-06-27 19:26:55,493 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 281 selfloop transitions, 32 changer transitions 0/315 dead transitions. [2024-06-27 19:26:55,493 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 365 places, 315 transitions, 3193 flow [2024-06-27 19:26:55,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:26:55,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:26:55,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-27 19:26:55,495 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-27 19:26:55,495 INFO L175 Difference]: Start difference. First operand has 354 places, 288 transitions, 2455 flow. Second operand 12 states and 127 transitions. [2024-06-27 19:26:55,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 365 places, 315 transitions, 3193 flow [2024-06-27 19:26:56,135 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 315 transitions, 3089 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 19:26:56,138 INFO L231 Difference]: Finished difference. Result has 359 places, 291 transitions, 2482 flow [2024-06-27 19:26:56,138 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2351, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=256, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2482, PETRI_PLACES=359, PETRI_TRANSITIONS=291} [2024-06-27 19:26:56,139 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-27 19:26:56,139 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 291 transitions, 2482 flow [2024-06-27 19:26:56,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:56,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:26:56,139 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:26:56,139 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable149 [2024-06-27 19:26:56,139 INFO L420 AbstractCegarLoop]: === Iteration 151 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:26:56,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:26:56,140 INFO L85 PathProgramCache]: Analyzing trace with hash 291490539, now seen corresponding path program 7 times [2024-06-27 19:26:56,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:26:56,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [668438560] [2024-06-27 19:26:56,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:26:56,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:26:56,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:26:59,786 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:26:59,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:26:59,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [668438560] [2024-06-27 19:26:59,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [668438560] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:26:59,787 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:26:59,787 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:26:59,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69870055] [2024-06-27 19:26:59,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:26:59,787 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:26:59,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:26:59,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:26:59,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:26:59,963 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:26:59,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 291 transitions, 2482 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:26:59,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:26:59,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:26:59,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:27:00,924 INFO L124 PetriNetUnfolderBase]: 926/1703 cut-off events. [2024-06-27 19:27:00,924 INFO L125 PetriNetUnfolderBase]: For 178811/178811 co-relation queries the response was YES. [2024-06-27 19:27:00,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8003 conditions, 1703 events. 926/1703 cut-off events. For 178811/178811 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 9856 event pairs, 196 based on Foata normal form. 10/1712 useless extension candidates. Maximal degree in co-relation 7831. Up to 1524 conditions per place. [2024-06-27 19:27:00,942 INFO L140 encePairwiseOnDemand]: 19/32 looper letters, 276 selfloop transitions, 32 changer transitions 11/321 dead transitions. [2024-06-27 19:27:00,942 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 321 transitions, 3227 flow [2024-06-27 19:27:00,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 19:27:00,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 19:27:00,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 141 transitions. [2024-06-27 19:27:00,943 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3389423076923077 [2024-06-27 19:27:00,943 INFO L175 Difference]: Start difference. First operand has 359 places, 291 transitions, 2482 flow. Second operand 13 states and 141 transitions. [2024-06-27 19:27:00,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 321 transitions, 3227 flow [2024-06-27 19:27:01,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 321 transitions, 3125 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 19:27:01,386 INFO L231 Difference]: Finished difference. Result has 364 places, 288 transitions, 2418 flow [2024-06-27 19:27:01,386 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2380, PETRI_DIFFERENCE_MINUEND_PLACES=351, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=291, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=259, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2418, PETRI_PLACES=364, PETRI_TRANSITIONS=288} [2024-06-27 19:27:01,386 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-27 19:27:01,386 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 288 transitions, 2418 flow [2024-06-27 19:27:01,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:01,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:27:01,387 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:27:01,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable150 [2024-06-27 19:27:01,387 INFO L420 AbstractCegarLoop]: === Iteration 152 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:27:01,387 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:27:01,387 INFO L85 PathProgramCache]: Analyzing trace with hash 143665613, now seen corresponding path program 15 times [2024-06-27 19:27:01,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:27:01,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027294344] [2024-06-27 19:27:01,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:27:01,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:27:01,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:27:04,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:27:04,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:27:04,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027294344] [2024-06-27 19:27:04,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027294344] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:27:04,179 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:27:04,179 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:27:04,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187690045] [2024-06-27 19:27:04,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:27:04,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:27:04,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:27:04,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:27:04,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:27:04,297 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:27:04,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 288 transitions, 2418 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:04,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:27:04,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:27:04,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:27:05,069 INFO L124 PetriNetUnfolderBase]: 916/1685 cut-off events. [2024-06-27 19:27:05,069 INFO L125 PetriNetUnfolderBase]: For 117816/117816 co-relation queries the response was YES. [2024-06-27 19:27:05,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7892 conditions, 1685 events. 916/1685 cut-off events. For 117816/117816 co-relation queries the response was YES. Maximal size of possible extension queue 169. Compared 9817 event pairs, 190 based on Foata normal form. 2/1686 useless extension candidates. Maximal degree in co-relation 7719. Up to 1550 conditions per place. [2024-06-27 19:27:05,088 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 283 selfloop transitions, 31 changer transitions 0/316 dead transitions. [2024-06-27 19:27:05,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 316 transitions, 3164 flow [2024-06-27 19:27:05,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:27:05,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:27:05,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 126 transitions. [2024-06-27 19:27:05,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.328125 [2024-06-27 19:27:05,089 INFO L175 Difference]: Start difference. First operand has 364 places, 288 transitions, 2418 flow. Second operand 12 states and 126 transitions. [2024-06-27 19:27:05,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 316 transitions, 3164 flow [2024-06-27 19:27:05,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 316 transitions, 3076 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-27 19:27:05,529 INFO L231 Difference]: Finished difference. Result has 364 places, 292 transitions, 2469 flow [2024-06-27 19:27:05,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2330, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=288, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=257, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2469, PETRI_PLACES=364, PETRI_TRANSITIONS=292} [2024-06-27 19:27:05,530 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-27 19:27:05,530 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 292 transitions, 2469 flow [2024-06-27 19:27:05,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:05,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:27:05,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:27:05,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable151 [2024-06-27 19:27:05,531 INFO L420 AbstractCegarLoop]: === Iteration 153 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:27:05,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:27:05,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1866908863, now seen corresponding path program 8 times [2024-06-27 19:27:05,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:27:05,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061533498] [2024-06-27 19:27:05,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:27:05,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:27:05,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:27:09,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:27:09,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:27:09,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061533498] [2024-06-27 19:27:09,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061533498] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:27:09,332 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:27:09,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:27:09,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650344346] [2024-06-27 19:27:09,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:27:09,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:27:09,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:27:09,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:27:09,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:27:09,466 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:27:09,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 292 transitions, 2469 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:09,466 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:27:09,466 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:27:09,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:27:10,727 INFO L124 PetriNetUnfolderBase]: 932/1720 cut-off events. [2024-06-27 19:27:10,727 INFO L125 PetriNetUnfolderBase]: For 182872/182872 co-relation queries the response was YES. [2024-06-27 19:27:10,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8041 conditions, 1720 events. 932/1720 cut-off events. For 182872/182872 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 10040 event pairs, 178 based on Foata normal form. 10/1729 useless extension candidates. Maximal degree in co-relation 7866. Up to 1337 conditions per place. [2024-06-27 19:27:10,747 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 231 selfloop transitions, 68 changer transitions 19/320 dead transitions. [2024-06-27 19:27:10,747 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 375 places, 320 transitions, 3207 flow [2024-06-27 19:27:10,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:27:10,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:27:10,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-27 19:27:10,748 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-27 19:27:10,748 INFO L175 Difference]: Start difference. First operand has 364 places, 292 transitions, 2469 flow. Second operand 12 states and 134 transitions. [2024-06-27 19:27:10,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 375 places, 320 transitions, 3207 flow [2024-06-27 19:27:11,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 368 places, 320 transitions, 3107 flow, removed 23 selfloop flow, removed 7 redundant places. [2024-06-27 19:27:11,199 INFO L231 Difference]: Finished difference. Result has 369 places, 283 transitions, 2440 flow [2024-06-27 19:27:11,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2369, PETRI_DIFFERENCE_MINUEND_PLACES=357, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=292, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2440, PETRI_PLACES=369, PETRI_TRANSITIONS=283} [2024-06-27 19:27:11,200 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 338 predicate places. [2024-06-27 19:27:11,200 INFO L495 AbstractCegarLoop]: Abstraction has has 369 places, 283 transitions, 2440 flow [2024-06-27 19:27:11,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:11,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:27:11,200 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:27:11,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable152 [2024-06-27 19:27:11,200 INFO L420 AbstractCegarLoop]: === Iteration 154 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:27:11,200 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:27:11,201 INFO L85 PathProgramCache]: Analyzing trace with hash 148222493, now seen corresponding path program 9 times [2024-06-27 19:27:11,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:27:11,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534113097] [2024-06-27 19:27:11,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:27:11,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:27:11,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:27:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:27:14,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:27:14,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534113097] [2024-06-27 19:27:14,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534113097] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:27:14,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:27:14,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:27:14,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767197342] [2024-06-27 19:27:14,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:27:14,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:27:14,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:27:14,734 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:27:14,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:27:14,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:27:14,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 369 places, 283 transitions, 2440 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:14,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:27:14,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:27:14,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:27:16,109 INFO L124 PetriNetUnfolderBase]: 927/1721 cut-off events. [2024-06-27 19:27:16,109 INFO L125 PetriNetUnfolderBase]: For 248545/248545 co-relation queries the response was YES. [2024-06-27 19:27:16,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9360 conditions, 1721 events. 927/1721 cut-off events. For 248545/248545 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 10000 event pairs, 185 based on Foata normal form. 8/1728 useless extension candidates. Maximal degree in co-relation 9184. Up to 1212 conditions per place. [2024-06-27 19:27:16,129 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 230 selfloop transitions, 73 changer transitions 13/318 dead transitions. [2024-06-27 19:27:16,129 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 373 places, 318 transitions, 3474 flow [2024-06-27 19:27:16,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:27:16,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:27:16,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 140 transitions. [2024-06-27 19:27:16,130 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3645833333333333 [2024-06-27 19:27:16,130 INFO L175 Difference]: Start difference. First operand has 369 places, 283 transitions, 2440 flow. Second operand 12 states and 140 transitions. [2024-06-27 19:27:16,130 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 373 places, 318 transitions, 3474 flow [2024-06-27 19:27:16,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 318 transitions, 3312 flow, removed 13 selfloop flow, removed 12 redundant places. [2024-06-27 19:27:16,843 INFO L231 Difference]: Finished difference. Result has 362 places, 277 transitions, 2384 flow [2024-06-27 19:27:16,843 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2290, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=210, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2384, PETRI_PLACES=362, PETRI_TRANSITIONS=277} [2024-06-27 19:27:16,844 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 331 predicate places. [2024-06-27 19:27:16,844 INFO L495 AbstractCegarLoop]: Abstraction has has 362 places, 277 transitions, 2384 flow [2024-06-27 19:27:16,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:16,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:27:16,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:27:16,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable153 [2024-06-27 19:27:16,844 INFO L420 AbstractCegarLoop]: === Iteration 155 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:27:16,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:27:16,844 INFO L85 PathProgramCache]: Analyzing trace with hash -839536073, now seen corresponding path program 16 times [2024-06-27 19:27:16,844 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:27:16,844 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683633345] [2024-06-27 19:27:16,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:27:16,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:27:16,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:27:19,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:27:19,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:27:19,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683633345] [2024-06-27 19:27:19,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683633345] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:27:19,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:27:19,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:27:19,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912624322] [2024-06-27 19:27:19,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:27:19,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:27:19,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:27:19,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:27:19,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:27:20,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:27:20,041 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 362 places, 277 transitions, 2384 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:20,041 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:27:20,041 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:27:20,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:27:20,890 INFO L124 PetriNetUnfolderBase]: 896/1660 cut-off events. [2024-06-27 19:27:20,890 INFO L125 PetriNetUnfolderBase]: For 192012/192012 co-relation queries the response was YES. [2024-06-27 19:27:20,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9125 conditions, 1660 events. 896/1660 cut-off events. For 192012/192012 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 9569 event pairs, 191 based on Foata normal form. 2/1661 useless extension candidates. Maximal degree in co-relation 8967. Up to 1471 conditions per place. [2024-06-27 19:27:20,908 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 249 selfloop transitions, 47 changer transitions 0/298 dead transitions. [2024-06-27 19:27:20,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 298 transitions, 3068 flow [2024-06-27 19:27:20,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:27:20,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:27:20,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 19:27:20,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-27 19:27:20,909 INFO L175 Difference]: Start difference. First operand has 362 places, 277 transitions, 2384 flow. Second operand 11 states and 117 transitions. [2024-06-27 19:27:20,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 298 transitions, 3068 flow [2024-06-27 19:27:21,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 355 places, 298 transitions, 2916 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 19:27:21,519 INFO L231 Difference]: Finished difference. Result has 356 places, 278 transitions, 2380 flow [2024-06-27 19:27:21,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2232, PETRI_DIFFERENCE_MINUEND_PLACES=345, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=277, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=230, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2380, PETRI_PLACES=356, PETRI_TRANSITIONS=278} [2024-06-27 19:27:21,519 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 325 predicate places. [2024-06-27 19:27:21,520 INFO L495 AbstractCegarLoop]: Abstraction has has 356 places, 278 transitions, 2380 flow [2024-06-27 19:27:21,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:21,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:27:21,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:27:21,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable154 [2024-06-27 19:27:21,520 INFO L420 AbstractCegarLoop]: === Iteration 156 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:27:21,521 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:27:21,521 INFO L85 PathProgramCache]: Analyzing trace with hash -55725663, now seen corresponding path program 17 times [2024-06-27 19:27:21,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:27:21,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716326535] [2024-06-27 19:27:21,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:27:21,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:27:21,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:27:25,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:27:25,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:27:25,007 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716326535] [2024-06-27 19:27:25,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716326535] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:27:25,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:27:25,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:27:25,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794016522] [2024-06-27 19:27:25,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:27:25,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:27:25,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:27:25,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:27:25,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:27:25,195 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:27:25,195 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 356 places, 278 transitions, 2380 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:25,195 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:27:25,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:27:25,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:27:25,992 INFO L124 PetriNetUnfolderBase]: 900/1668 cut-off events. [2024-06-27 19:27:25,992 INFO L125 PetriNetUnfolderBase]: For 187228/187228 co-relation queries the response was YES. [2024-06-27 19:27:26,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9123 conditions, 1668 events. 900/1668 cut-off events. For 187228/187228 co-relation queries the response was YES. Maximal size of possible extension queue 161. Compared 9636 event pairs, 189 based on Foata normal form. 2/1669 useless extension candidates. Maximal degree in co-relation 8967. Up to 1479 conditions per place. [2024-06-27 19:27:26,012 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 251 selfloop transitions, 46 changer transitions 0/299 dead transitions. [2024-06-27 19:27:26,012 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 366 places, 299 transitions, 3068 flow [2024-06-27 19:27:26,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:27:26,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:27:26,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 19:27:26,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-27 19:27:26,013 INFO L175 Difference]: Start difference. First operand has 356 places, 278 transitions, 2380 flow. Second operand 11 states and 116 transitions. [2024-06-27 19:27:26,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 366 places, 299 transitions, 3068 flow [2024-06-27 19:27:26,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 299 transitions, 2932 flow, removed 22 selfloop flow, removed 10 redundant places. [2024-06-27 19:27:26,693 INFO L231 Difference]: Finished difference. Result has 357 places, 279 transitions, 2392 flow [2024-06-27 19:27:26,693 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2244, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2392, PETRI_PLACES=357, PETRI_TRANSITIONS=279} [2024-06-27 19:27:26,693 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 326 predicate places. [2024-06-27 19:27:26,693 INFO L495 AbstractCegarLoop]: Abstraction has has 357 places, 279 transitions, 2392 flow [2024-06-27 19:27:26,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:26,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:27:26,694 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:27:26,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable155 [2024-06-27 19:27:26,694 INFO L420 AbstractCegarLoop]: === Iteration 157 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:27:26,694 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:27:26,694 INFO L85 PathProgramCache]: Analyzing trace with hash -55869813, now seen corresponding path program 18 times [2024-06-27 19:27:26,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:27:26,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875928520] [2024-06-27 19:27:26,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:27:26,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:27:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:27:29,784 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:27:29,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:27:29,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875928520] [2024-06-27 19:27:29,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875928520] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:27:29,784 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:27:29,784 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:27:29,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419774345] [2024-06-27 19:27:29,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:27:29,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:27:29,785 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:27:29,785 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:27:29,785 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:27:29,924 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:27:29,924 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 357 places, 279 transitions, 2392 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:29,924 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:27:29,924 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:27:29,924 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:27:30,705 INFO L124 PetriNetUnfolderBase]: 904/1676 cut-off events. [2024-06-27 19:27:30,706 INFO L125 PetriNetUnfolderBase]: For 187440/187440 co-relation queries the response was YES. [2024-06-27 19:27:30,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9165 conditions, 1676 events. 904/1676 cut-off events. For 187440/187440 co-relation queries the response was YES. Maximal size of possible extension queue 162. Compared 9702 event pairs, 187 based on Foata normal form. 2/1677 useless extension candidates. Maximal degree in co-relation 9009. Up to 1487 conditions per place. [2024-06-27 19:27:30,721 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 254 selfloop transitions, 44 changer transitions 0/300 dead transitions. [2024-06-27 19:27:30,721 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 300 transitions, 3084 flow [2024-06-27 19:27:30,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:27:30,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:27:30,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 19:27:30,722 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-27 19:27:30,722 INFO L175 Difference]: Start difference. First operand has 357 places, 279 transitions, 2392 flow. Second operand 11 states and 115 transitions. [2024-06-27 19:27:30,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 300 transitions, 3084 flow [2024-06-27 19:27:31,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 300 transitions, 2946 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 19:27:31,350 INFO L231 Difference]: Finished difference. Result has 359 places, 280 transitions, 2400 flow [2024-06-27 19:27:31,350 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2256, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2400, PETRI_PLACES=359, PETRI_TRANSITIONS=280} [2024-06-27 19:27:31,351 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-27 19:27:31,351 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 280 transitions, 2400 flow [2024-06-27 19:27:31,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:31,351 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:27:31,351 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:27:31,351 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable156 [2024-06-27 19:27:31,352 INFO L420 AbstractCegarLoop]: === Iteration 158 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:27:31,352 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:27:31,352 INFO L85 PathProgramCache]: Analyzing trace with hash -59444733, now seen corresponding path program 19 times [2024-06-27 19:27:31,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:27:31,352 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753959682] [2024-06-27 19:27:31,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:27:31,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:27:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:27:34,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:27:34,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:27:34,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753959682] [2024-06-27 19:27:34,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753959682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:27:34,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:27:34,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:27:34,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553745942] [2024-06-27 19:27:34,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:27:34,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:27:34,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:27:34,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:27:34,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:27:34,469 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:27:34,470 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 280 transitions, 2400 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:34,470 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:27:34,470 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:27:34,470 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:27:35,198 INFO L124 PetriNetUnfolderBase]: 908/1684 cut-off events. [2024-06-27 19:27:35,198 INFO L125 PetriNetUnfolderBase]: For 187574/187574 co-relation queries the response was YES. [2024-06-27 19:27:35,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9198 conditions, 1684 events. 908/1684 cut-off events. For 187574/187574 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9780 event pairs, 183 based on Foata normal form. 2/1685 useless extension candidates. Maximal degree in co-relation 9041. Up to 1495 conditions per place. [2024-06-27 19:27:35,217 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 257 selfloop transitions, 42 changer transitions 0/301 dead transitions. [2024-06-27 19:27:35,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 301 transitions, 3094 flow [2024-06-27 19:27:35,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:27:35,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:27:35,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 19:27:35,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-27 19:27:35,218 INFO L175 Difference]: Start difference. First operand has 359 places, 280 transitions, 2400 flow. Second operand 11 states and 114 transitions. [2024-06-27 19:27:35,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 301 transitions, 3094 flow [2024-06-27 19:27:35,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 301 transitions, 2960 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 19:27:35,906 INFO L231 Difference]: Finished difference. Result has 361 places, 281 transitions, 2408 flow [2024-06-27 19:27:35,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2268, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=238, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2408, PETRI_PLACES=361, PETRI_TRANSITIONS=281} [2024-06-27 19:27:35,906 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-27 19:27:35,906 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 281 transitions, 2408 flow [2024-06-27 19:27:35,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:35,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:27:35,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:27:35,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable157 [2024-06-27 19:27:35,907 INFO L420 AbstractCegarLoop]: === Iteration 159 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:27:35,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:27:35,908 INFO L85 PathProgramCache]: Analyzing trace with hash 88380193, now seen corresponding path program 10 times [2024-06-27 19:27:35,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:27:35,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364385424] [2024-06-27 19:27:35,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:27:35,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:27:35,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:27:39,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:27:39,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:27:39,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364385424] [2024-06-27 19:27:39,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364385424] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:27:39,775 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:27:39,775 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:27:39,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825987577] [2024-06-27 19:27:39,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:27:39,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:27:39,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:27:39,776 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:27:39,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:27:39,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:27:39,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 281 transitions, 2408 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:39,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:27:39,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:27:39,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:27:40,858 INFO L124 PetriNetUnfolderBase]: 895/1661 cut-off events. [2024-06-27 19:27:40,858 INFO L125 PetriNetUnfolderBase]: For 171214/171214 co-relation queries the response was YES. [2024-06-27 19:27:40,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7801 conditions, 1661 events. 895/1661 cut-off events. For 171214/171214 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 9642 event pairs, 186 based on Foata normal form. 10/1670 useless extension candidates. Maximal degree in co-relation 7643. Up to 1434 conditions per place. [2024-06-27 19:27:40,873 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 250 selfloop transitions, 44 changer transitions 11/307 dead transitions. [2024-06-27 19:27:40,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 307 transitions, 3108 flow [2024-06-27 19:27:40,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:27:40,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:27:40,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-27 19:27:40,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-27 19:27:40,875 INFO L175 Difference]: Start difference. First operand has 361 places, 281 transitions, 2408 flow. Second operand 12 states and 129 transitions. [2024-06-27 19:27:40,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 307 transitions, 3108 flow [2024-06-27 19:27:41,329 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 363 places, 307 transitions, 2980 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 19:27:41,332 INFO L231 Difference]: Finished difference. Result has 364 places, 278 transitions, 2349 flow [2024-06-27 19:27:41,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2280, PETRI_DIFFERENCE_MINUEND_PLACES=352, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2349, PETRI_PLACES=364, PETRI_TRANSITIONS=278} [2024-06-27 19:27:41,333 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 333 predicate places. [2024-06-27 19:27:41,333 INFO L495 AbstractCegarLoop]: Abstraction has has 364 places, 278 transitions, 2349 flow [2024-06-27 19:27:41,333 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:41,333 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:27:41,333 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:27:41,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable158 [2024-06-27 19:27:41,333 INFO L420 AbstractCegarLoop]: === Iteration 160 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:27:41,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:27:41,333 INFO L85 PathProgramCache]: Analyzing trace with hash 1098076325, now seen corresponding path program 11 times [2024-06-27 19:27:41,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:27:41,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461756129] [2024-06-27 19:27:41,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:27:41,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:27:41,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:27:45,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:27:45,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:27:45,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461756129] [2024-06-27 19:27:45,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461756129] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:27:45,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:27:45,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:27:45,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616426922] [2024-06-27 19:27:45,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:27:45,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:27:45,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:27:45,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:27:45,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:27:45,728 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:27:45,729 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 364 places, 278 transitions, 2349 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:45,729 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:27:45,729 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:27:45,729 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:27:46,684 INFO L124 PetriNetUnfolderBase]: 910/1698 cut-off events. [2024-06-27 19:27:46,684 INFO L125 PetriNetUnfolderBase]: For 230136/230136 co-relation queries the response was YES. [2024-06-27 19:27:46,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9066 conditions, 1698 events. 910/1698 cut-off events. For 230136/230136 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 9853 event pairs, 123 based on Foata normal form. 8/1702 useless extension candidates. Maximal degree in co-relation 8907. Up to 851 conditions per place. [2024-06-27 19:27:46,704 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 149 selfloop transitions, 154 changer transitions 8/313 dead transitions. [2024-06-27 19:27:46,704 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 313 transitions, 3357 flow [2024-06-27 19:27:46,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:27:46,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:27:46,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-27 19:27:46,705 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-27 19:27:46,705 INFO L175 Difference]: Start difference. First operand has 364 places, 278 transitions, 2349 flow. Second operand 12 states and 147 transitions. [2024-06-27 19:27:46,705 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 371 places, 313 transitions, 3357 flow [2024-06-27 19:27:47,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 313 transitions, 3261 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 19:27:47,300 INFO L231 Difference]: Finished difference. Result has 361 places, 276 transitions, 2551 flow [2024-06-27 19:27:47,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2257, PETRI_DIFFERENCE_MINUEND_PLACES=349, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=154, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2551, PETRI_PLACES=361, PETRI_TRANSITIONS=276} [2024-06-27 19:27:47,300 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-27 19:27:47,300 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 276 transitions, 2551 flow [2024-06-27 19:27:47,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:47,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:27:47,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:27:47,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable159 [2024-06-27 19:27:47,301 INFO L420 AbstractCegarLoop]: === Iteration 161 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:27:47,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:27:47,301 INFO L85 PathProgramCache]: Analyzing trace with hash -2139773201, now seen corresponding path program 12 times [2024-06-27 19:27:47,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:27:47,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670357210] [2024-06-27 19:27:47,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:27:47,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:27:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:27:50,617 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:27:50,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:27:50,617 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670357210] [2024-06-27 19:27:50,617 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670357210] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:27:50,617 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:27:50,618 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:27:50,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105687662] [2024-06-27 19:27:50,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:27:50,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:27:50,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:27:50,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:27:50,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:27:50,737 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:27:50,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 276 transitions, 2551 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:50,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:27:50,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:27:50,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:27:51,804 INFO L124 PetriNetUnfolderBase]: 877/1635 cut-off events. [2024-06-27 19:27:51,804 INFO L125 PetriNetUnfolderBase]: For 183824/183824 co-relation queries the response was YES. [2024-06-27 19:27:51,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8010 conditions, 1635 events. 877/1635 cut-off events. For 183824/183824 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9458 event pairs, 120 based on Foata normal form. 12/1643 useless extension candidates. Maximal degree in co-relation 7852. Up to 853 conditions per place. [2024-06-27 19:27:51,820 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 152 selfloop transitions, 141 changer transitions 8/303 dead transitions. [2024-06-27 19:27:51,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 303 transitions, 3297 flow [2024-06-27 19:27:51,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:27:51,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:27:51,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 132 transitions. [2024-06-27 19:27:51,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 19:27:51,821 INFO L175 Difference]: Start difference. First operand has 361 places, 276 transitions, 2551 flow. Second operand 11 states and 132 transitions. [2024-06-27 19:27:51,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 303 transitions, 3297 flow [2024-06-27 19:27:52,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 303 transitions, 2985 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 19:27:52,263 INFO L231 Difference]: Finished difference. Result has 359 places, 273 transitions, 2545 flow [2024-06-27 19:27:52,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2239, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=276, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2545, PETRI_PLACES=359, PETRI_TRANSITIONS=273} [2024-06-27 19:27:52,264 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-27 19:27:52,264 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 273 transitions, 2545 flow [2024-06-27 19:27:52,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:52,265 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:27:52,265 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:27:52,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable160 [2024-06-27 19:27:52,265 INFO L420 AbstractCegarLoop]: === Iteration 162 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:27:52,265 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:27:52,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1081808609, now seen corresponding path program 13 times [2024-06-27 19:27:52,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:27:52,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132713185] [2024-06-27 19:27:52,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:27:52,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:27:52,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:27:56,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:27:56,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:27:56,031 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132713185] [2024-06-27 19:27:56,031 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132713185] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:27:56,031 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:27:56,031 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:27:56,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888661666] [2024-06-27 19:27:56,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:27:56,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:27:56,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:27:56,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:27:56,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:27:56,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:27:56,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 273 transitions, 2545 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:56,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:27:56,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:27:56,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:27:57,414 INFO L124 PetriNetUnfolderBase]: 905/1691 cut-off events. [2024-06-27 19:27:57,414 INFO L125 PetriNetUnfolderBase]: For 244124/244124 co-relation queries the response was YES. [2024-06-27 19:27:57,428 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9754 conditions, 1691 events. 905/1691 cut-off events. For 244124/244124 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 9803 event pairs, 172 based on Foata normal form. 8/1695 useless extension candidates. Maximal degree in co-relation 9598. Up to 1259 conditions per place. [2024-06-27 19:27:57,432 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 236 selfloop transitions, 65 changer transitions 8/311 dead transitions. [2024-06-27 19:27:57,432 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 311 transitions, 3613 flow [2024-06-27 19:27:57,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:27:57,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:27:57,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-27 19:27:57,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 19:27:57,433 INFO L175 Difference]: Start difference. First operand has 359 places, 273 transitions, 2545 flow. Second operand 12 states and 144 transitions. [2024-06-27 19:27:57,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 311 transitions, 3613 flow [2024-06-27 19:27:58,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 357 places, 311 transitions, 3280 flow, removed 23 selfloop flow, removed 10 redundant places. [2024-06-27 19:27:58,207 INFO L231 Difference]: Finished difference. Result has 360 places, 274 transitions, 2434 flow [2024-06-27 19:27:58,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2216, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=273, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=208, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2434, PETRI_PLACES=360, PETRI_TRANSITIONS=274} [2024-06-27 19:27:58,208 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 329 predicate places. [2024-06-27 19:27:58,208 INFO L495 AbstractCegarLoop]: Abstraction has has 360 places, 274 transitions, 2434 flow [2024-06-27 19:27:58,208 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:27:58,208 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:27:58,208 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:27:58,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable161 [2024-06-27 19:27:58,208 INFO L420 AbstractCegarLoop]: === Iteration 163 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:27:58,208 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:27:58,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1999059359, now seen corresponding path program 20 times [2024-06-27 19:27:58,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:27:58,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1286167158] [2024-06-27 19:27:58,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:27:58,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:27:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:28:02,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:28:02,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:28:02,233 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1286167158] [2024-06-27 19:28:02,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1286167158] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:28:02,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:28:02,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:28:02,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16752070] [2024-06-27 19:28:02,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:28:02,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:28:02,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:28:02,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:28:02,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:28:02,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:28:02,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 360 places, 274 transitions, 2434 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:28:02,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:28:02,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:28:02,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:28:03,315 INFO L124 PetriNetUnfolderBase]: 885/1651 cut-off events. [2024-06-27 19:28:03,315 INFO L125 PetriNetUnfolderBase]: For 203453/203453 co-relation queries the response was YES. [2024-06-27 19:28:03,330 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9477 conditions, 1651 events. 885/1651 cut-off events. For 203453/203453 co-relation queries the response was YES. Maximal size of possible extension queue 152. Compared 9546 event pairs, 144 based on Foata normal form. 2/1649 useless extension candidates. Maximal degree in co-relation 9318. Up to 1207 conditions per place. [2024-06-27 19:28:03,333 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 197 selfloop transitions, 99 changer transitions 0/298 dead transitions. [2024-06-27 19:28:03,334 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 298 transitions, 3136 flow [2024-06-27 19:28:03,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:28:03,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:28:03,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-06-27 19:28:03,335 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36079545454545453 [2024-06-27 19:28:03,335 INFO L175 Difference]: Start difference. First operand has 360 places, 274 transitions, 2434 flow. Second operand 11 states and 127 transitions. [2024-06-27 19:28:03,335 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 368 places, 298 transitions, 3136 flow [2024-06-27 19:28:03,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 358 places, 298 transitions, 3030 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 19:28:03,952 INFO L231 Difference]: Finished difference. Result has 359 places, 275 transitions, 2584 flow [2024-06-27 19:28:03,952 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2328, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=274, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=98, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2584, PETRI_PLACES=359, PETRI_TRANSITIONS=275} [2024-06-27 19:28:03,952 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 328 predicate places. [2024-06-27 19:28:03,952 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 275 transitions, 2584 flow [2024-06-27 19:28:03,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:28:03,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:28:03,952 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:28:03,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable162 [2024-06-27 19:28:03,953 INFO L420 AbstractCegarLoop]: === Iteration 164 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:28:03,953 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:28:03,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1081799309, now seen corresponding path program 14 times [2024-06-27 19:28:03,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:28:03,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [266971137] [2024-06-27 19:28:03,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:28:03,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:28:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:28:07,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:28:07,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:28:07,345 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [266971137] [2024-06-27 19:28:07,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [266971137] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:28:07,345 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:28:07,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:28:07,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143786904] [2024-06-27 19:28:07,345 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:28:07,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:28:07,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:28:07,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:28:07,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:28:07,453 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:28:07,454 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 275 transitions, 2584 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:28:07,454 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:28:07,454 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:28:07,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:28:08,358 INFO L124 PetriNetUnfolderBase]: 917/1723 cut-off events. [2024-06-27 19:28:08,359 INFO L125 PetriNetUnfolderBase]: For 333970/333970 co-relation queries the response was YES. [2024-06-27 19:28:08,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9882 conditions, 1723 events. 917/1723 cut-off events. For 333970/333970 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 10026 event pairs, 140 based on Foata normal form. 20/1739 useless extension candidates. Maximal degree in co-relation 9724. Up to 947 conditions per place. [2024-06-27 19:28:08,378 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 144 selfloop transitions, 140 changer transitions 16/302 dead transitions. [2024-06-27 19:28:08,378 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 369 places, 302 transitions, 3282 flow [2024-06-27 19:28:08,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:28:08,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:28:08,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 131 transitions. [2024-06-27 19:28:08,379 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721590909090909 [2024-06-27 19:28:08,379 INFO L175 Difference]: Start difference. First operand has 359 places, 275 transitions, 2584 flow. Second operand 11 states and 131 transitions. [2024-06-27 19:28:08,379 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 369 places, 302 transitions, 3282 flow [2024-06-27 19:28:09,205 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 360 places, 302 transitions, 3036 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 19:28:09,208 INFO L231 Difference]: Finished difference. Result has 361 places, 267 transitions, 2558 flow [2024-06-27 19:28:09,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2338, PETRI_DIFFERENCE_MINUEND_PLACES=350, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=275, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=140, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2558, PETRI_PLACES=361, PETRI_TRANSITIONS=267} [2024-06-27 19:28:09,209 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 330 predicate places. [2024-06-27 19:28:09,209 INFO L495 AbstractCegarLoop]: Abstraction has has 361 places, 267 transitions, 2558 flow [2024-06-27 19:28:09,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:28:09,209 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:28:09,209 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:28:09,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable163 [2024-06-27 19:28:09,210 INFO L420 AbstractCegarLoop]: === Iteration 165 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:28:09,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:28:09,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1998782653, now seen corresponding path program 15 times [2024-06-27 19:28:09,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:28:09,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [155202404] [2024-06-27 19:28:09,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:28:09,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:28:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:28:12,872 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:28:12,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:28:12,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [155202404] [2024-06-27 19:28:12,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [155202404] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:28:12,873 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:28:12,873 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 19:28:12,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144169800] [2024-06-27 19:28:12,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:28:12,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 19:28:12,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:28:12,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 19:28:12,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2024-06-27 19:28:12,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:28:12,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 361 places, 267 transitions, 2558 flow. Second operand has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:28:12,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:28:12,997 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:28:12,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:28:13,923 INFO L124 PetriNetUnfolderBase]: 904/1704 cut-off events. [2024-06-27 19:28:13,923 INFO L125 PetriNetUnfolderBase]: For 322463/322463 co-relation queries the response was YES. [2024-06-27 19:28:13,939 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11057 conditions, 1704 events. 904/1704 cut-off events. For 322463/322463 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 9841 event pairs, 137 based on Foata normal form. 8/1708 useless extension candidates. Maximal degree in co-relation 10898. Up to 788 conditions per place. [2024-06-27 19:28:13,944 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 147 selfloop transitions, 137 changer transitions 13/299 dead transitions. [2024-06-27 19:28:13,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 299 transitions, 3530 flow [2024-06-27 19:28:13,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:28:13,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:28:13,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 19:28:13,945 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-27 19:28:13,945 INFO L175 Difference]: Start difference. First operand has 361 places, 267 transitions, 2558 flow. Second operand 11 states and 134 transitions. [2024-06-27 19:28:13,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 299 transitions, 3530 flow [2024-06-27 19:28:14,881 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 354 places, 299 transitions, 3210 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-27 19:28:14,884 INFO L231 Difference]: Finished difference. Result has 355 places, 261 transitions, 2485 flow [2024-06-27 19:28:14,884 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2246, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2485, PETRI_PLACES=355, PETRI_TRANSITIONS=261} [2024-06-27 19:28:14,885 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 324 predicate places. [2024-06-27 19:28:14,885 INFO L495 AbstractCegarLoop]: Abstraction has has 355 places, 261 transitions, 2485 flow [2024-06-27 19:28:14,885 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.416666666666667) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:28:14,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:28:14,885 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:28:14,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable164 [2024-06-27 19:28:14,885 INFO L420 AbstractCegarLoop]: === Iteration 166 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:28:14,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:28:14,885 INFO L85 PathProgramCache]: Analyzing trace with hash 1081531903, now seen corresponding path program 21 times [2024-06-27 19:28:14,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:28:14,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [408615635] [2024-06-27 19:28:14,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:28:14,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:28:14,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:28:18,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:28:18,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:28:18,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [408615635] [2024-06-27 19:28:18,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [408615635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:28:18,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:28:18,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:28:18,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483052301] [2024-06-27 19:28:18,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:28:18,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:28:18,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:28:18,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:28:18,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:28:18,299 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:28:18,299 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 355 places, 261 transitions, 2485 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:28:18,299 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:28:18,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:28:18,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:28:19,078 INFO L124 PetriNetUnfolderBase]: 864/1628 cut-off events. [2024-06-27 19:28:19,078 INFO L125 PetriNetUnfolderBase]: For 270295/270295 co-relation queries the response was YES. [2024-06-27 19:28:19,093 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10752 conditions, 1628 events. 864/1628 cut-off events. For 270295/270295 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 9371 event pairs, 187 based on Foata normal form. 2/1626 useless extension candidates. Maximal degree in co-relation 10596. Up to 1388 conditions per place. [2024-06-27 19:28:19,097 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 228 selfloop transitions, 55 changer transitions 0/285 dead transitions. [2024-06-27 19:28:19,097 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 360 places, 285 transitions, 3159 flow [2024-06-27 19:28:19,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:28:19,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:28:19,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-06-27 19:28:19,098 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35511363636363635 [2024-06-27 19:28:19,098 INFO L175 Difference]: Start difference. First operand has 355 places, 261 transitions, 2485 flow. Second operand 11 states and 125 transitions. [2024-06-27 19:28:19,098 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 360 places, 285 transitions, 3159 flow [2024-06-27 19:28:19,980 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 285 transitions, 2871 flow, removed 7 selfloop flow, removed 14 redundant places. [2024-06-27 19:28:19,982 INFO L231 Difference]: Finished difference. Result has 347 places, 262 transitions, 2363 flow [2024-06-27 19:28:19,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2197, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=261, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2363, PETRI_PLACES=347, PETRI_TRANSITIONS=262} [2024-06-27 19:28:19,983 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-27 19:28:19,983 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 262 transitions, 2363 flow [2024-06-27 19:28:19,983 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:28:19,983 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:28:19,983 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:28:19,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable165 [2024-06-27 19:28:19,983 INFO L420 AbstractCegarLoop]: === Iteration 167 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:28:19,983 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:28:19,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1081539839, now seen corresponding path program 16 times [2024-06-27 19:28:19,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:28:19,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094554780] [2024-06-27 19:28:19,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:28:19,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:28:20,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:28:23,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:28:23,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:28:23,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094554780] [2024-06-27 19:28:23,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094554780] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:28:23,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:28:23,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:28:23,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128951640] [2024-06-27 19:28:23,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:28:23,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:28:23,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:28:23,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:28:23,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:28:24,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:28:24,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 262 transitions, 2363 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:28:24,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:28:24,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:28:24,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:28:25,080 INFO L124 PetriNetUnfolderBase]: 851/1605 cut-off events. [2024-06-27 19:28:25,080 INFO L125 PetriNetUnfolderBase]: For 239735/239735 co-relation queries the response was YES. [2024-06-27 19:28:25,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9098 conditions, 1605 events. 851/1605 cut-off events. For 239735/239735 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 9246 event pairs, 170 based on Foata normal form. 10/1611 useless extension candidates. Maximal degree in co-relation 8946. Up to 1321 conditions per place. [2024-06-27 19:28:25,098 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 225 selfloop transitions, 53 changer transitions 11/291 dead transitions. [2024-06-27 19:28:25,098 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 291 transitions, 3037 flow [2024-06-27 19:28:25,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:28:25,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:28:25,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 137 transitions. [2024-06-27 19:28:25,099 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3567708333333333 [2024-06-27 19:28:25,099 INFO L175 Difference]: Start difference. First operand has 347 places, 262 transitions, 2363 flow. Second operand 12 states and 137 transitions. [2024-06-27 19:28:25,099 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 291 transitions, 3037 flow [2024-06-27 19:28:25,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 291 transitions, 2883 flow, removed 23 selfloop flow, removed 9 redundant places. [2024-06-27 19:28:25,756 INFO L231 Difference]: Finished difference. Result has 350 places, 259 transitions, 2295 flow [2024-06-27 19:28:25,756 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2209, PETRI_DIFFERENCE_MINUEND_PLACES=338, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=262, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=209, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2295, PETRI_PLACES=350, PETRI_TRANSITIONS=259} [2024-06-27 19:28:25,756 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 319 predicate places. [2024-06-27 19:28:25,756 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 259 transitions, 2295 flow [2024-06-27 19:28:25,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:28:25,756 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:28:25,756 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:28:25,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable166 [2024-06-27 19:28:25,757 INFO L420 AbstractCegarLoop]: === Iteration 168 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:28:25,757 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:28:25,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1999051423, now seen corresponding path program 17 times [2024-06-27 19:28:25,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:28:25,757 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706246056] [2024-06-27 19:28:25,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:28:25,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:28:25,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:28:30,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:28:30,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:28:30,594 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706246056] [2024-06-27 19:28:30,594 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706246056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:28:30,594 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:28:30,594 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:28:30,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970999105] [2024-06-27 19:28:30,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:28:30,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:28:30,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:28:30,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:28:30,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:28:30,713 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:28:30,713 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 259 transitions, 2295 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:28:30,714 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:28:30,714 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:28:30,714 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:28:31,814 INFO L124 PetriNetUnfolderBase]: 841/1591 cut-off events. [2024-06-27 19:28:31,814 INFO L125 PetriNetUnfolderBase]: For 242386/242386 co-relation queries the response was YES. [2024-06-27 19:28:31,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8965 conditions, 1591 events. 841/1591 cut-off events. For 242386/242386 co-relation queries the response was YES. Maximal size of possible extension queue 138. Compared 9182 event pairs, 134 based on Foata normal form. 10/1597 useless extension candidates. Maximal degree in co-relation 8812. Up to 1103 conditions per place. [2024-06-27 19:28:31,833 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 179 selfloop transitions, 96 changer transitions 11/288 dead transitions. [2024-06-27 19:28:31,833 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 288 transitions, 2963 flow [2024-06-27 19:28:31,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:28:31,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:28:31,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-27 19:28:31,834 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-27 19:28:31,834 INFO L175 Difference]: Start difference. First operand has 350 places, 259 transitions, 2295 flow. Second operand 12 states and 139 transitions. [2024-06-27 19:28:31,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 288 transitions, 2963 flow [2024-06-27 19:28:32,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 288 transitions, 2853 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 19:28:32,422 INFO L231 Difference]: Finished difference. Result has 348 places, 256 transitions, 2360 flow [2024-06-27 19:28:32,422 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2185, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=259, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2360, PETRI_PLACES=348, PETRI_TRANSITIONS=256} [2024-06-27 19:28:32,423 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-27 19:28:32,423 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 256 transitions, 2360 flow [2024-06-27 19:28:32,423 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:28:32,423 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:28:32,423 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:28:32,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable167 [2024-06-27 19:28:32,423 INFO L420 AbstractCegarLoop]: === Iteration 169 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:28:32,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:28:32,424 INFO L85 PathProgramCache]: Analyzing trace with hash 803166357, now seen corresponding path program 22 times [2024-06-27 19:28:32,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:28:32,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621898163] [2024-06-27 19:28:32,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:28:32,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:28:32,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:28:36,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:28:36,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:28:36,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621898163] [2024-06-27 19:28:36,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621898163] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:28:36,104 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:28:36,104 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:28:36,104 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592807049] [2024-06-27 19:28:36,104 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:28:36,104 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:28:36,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:28:36,104 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:28:36,104 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:28:36,262 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:28:36,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 256 transitions, 2360 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:28:36,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:28:36,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:28:36,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:28:37,152 INFO L124 PetriNetUnfolderBase]: 819/1549 cut-off events. [2024-06-27 19:28:37,153 INFO L125 PetriNetUnfolderBase]: For 185539/185539 co-relation queries the response was YES. [2024-06-27 19:28:37,163 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9004 conditions, 1549 events. 819/1549 cut-off events. For 185539/185539 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 8920 event pairs, 166 based on Foata normal form. 2/1547 useless extension candidates. Maximal degree in co-relation 8852. Up to 1339 conditions per place. [2024-06-27 19:28:37,165 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 228 selfloop transitions, 49 changer transitions 0/279 dead transitions. [2024-06-27 19:28:37,166 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 279 transitions, 3020 flow [2024-06-27 19:28:37,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:28:37,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:28:37,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 19:28:37,167 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-27 19:28:37,167 INFO L175 Difference]: Start difference. First operand has 348 places, 256 transitions, 2360 flow. Second operand 11 states and 123 transitions. [2024-06-27 19:28:37,167 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 279 transitions, 3020 flow [2024-06-27 19:28:37,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 279 transitions, 2824 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 19:28:37,671 INFO L231 Difference]: Finished difference. Result has 345 places, 257 transitions, 2320 flow [2024-06-27 19:28:37,671 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2164, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=256, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=207, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2320, PETRI_PLACES=345, PETRI_TRANSITIONS=257} [2024-06-27 19:28:37,671 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-27 19:28:37,671 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 257 transitions, 2320 flow [2024-06-27 19:28:37,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:28:37,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:28:37,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:28:37,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable168 [2024-06-27 19:28:37,672 INFO L420 AbstractCegarLoop]: === Iteration 170 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:28:37,672 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:28:37,672 INFO L85 PathProgramCache]: Analyzing trace with hash -2006411009, now seen corresponding path program 23 times [2024-06-27 19:28:37,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:28:37,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220798230] [2024-06-27 19:28:37,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:28:37,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:28:37,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:28:41,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:28:41,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:28:41,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220798230] [2024-06-27 19:28:41,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220798230] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:28:41,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:28:41,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:28:41,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686997009] [2024-06-27 19:28:41,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:28:41,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:28:41,653 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:28:41,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:28:41,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:28:41,781 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:28:41,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 257 transitions, 2320 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:28:41,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:28:41,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:28:41,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:28:42,639 INFO L124 PetriNetUnfolderBase]: 839/1593 cut-off events. [2024-06-27 19:28:42,639 INFO L125 PetriNetUnfolderBase]: For 250775/250775 co-relation queries the response was YES. [2024-06-27 19:28:42,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9097 conditions, 1593 events. 839/1593 cut-off events. For 250775/250775 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 9222 event pairs, 140 based on Foata normal form. 12/1601 useless extension candidates. Maximal degree in co-relation 8946. Up to 1109 conditions per place. [2024-06-27 19:28:42,656 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 175 selfloop transitions, 92 changer transitions 14/283 dead transitions. [2024-06-27 19:28:42,656 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 283 transitions, 3022 flow [2024-06-27 19:28:42,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:28:42,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:28:42,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 128 transitions. [2024-06-27 19:28:42,657 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36363636363636365 [2024-06-27 19:28:42,657 INFO L175 Difference]: Start difference. First operand has 345 places, 257 transitions, 2320 flow. Second operand 11 states and 128 transitions. [2024-06-27 19:28:42,657 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 283 transitions, 3022 flow [2024-06-27 19:28:43,381 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 283 transitions, 2878 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 19:28:43,383 INFO L231 Difference]: Finished difference. Result has 347 places, 252 transitions, 2333 flow [2024-06-27 19:28:43,384 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2176, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=257, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2333, PETRI_PLACES=347, PETRI_TRANSITIONS=252} [2024-06-27 19:28:43,384 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-27 19:28:43,384 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 252 transitions, 2333 flow [2024-06-27 19:28:43,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:28:43,384 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:28:43,384 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:28:43,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable169 [2024-06-27 19:28:43,384 INFO L420 AbstractCegarLoop]: === Iteration 171 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:28:43,384 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:28:43,385 INFO L85 PathProgramCache]: Analyzing trace with hash -949289519, now seen corresponding path program 24 times [2024-06-27 19:28:43,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:28:43,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [932895277] [2024-06-27 19:28:43,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:28:43,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:28:43,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:28:46,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:28:46,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:28:46,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [932895277] [2024-06-27 19:28:46,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [932895277] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:28:46,920 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:28:46,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:28:46,920 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251067229] [2024-06-27 19:28:46,920 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:28:46,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:28:46,920 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:28:46,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:28:46,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:28:47,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:28:47,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 252 transitions, 2333 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:28:47,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:28:47,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:28:47,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:28:47,935 INFO L124 PetriNetUnfolderBase]: 807/1533 cut-off events. [2024-06-27 19:28:47,935 INFO L125 PetriNetUnfolderBase]: For 185415/185415 co-relation queries the response was YES. [2024-06-27 19:28:47,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8942 conditions, 1533 events. 807/1533 cut-off events. For 185415/185415 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 8835 event pairs, 136 based on Foata normal form. 2/1531 useless extension candidates. Maximal degree in co-relation 8790. Up to 1103 conditions per place. [2024-06-27 19:28:47,948 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 178 selfloop transitions, 94 changer transitions 0/274 dead transitions. [2024-06-27 19:28:47,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 274 transitions, 2983 flow [2024-06-27 19:28:47,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:28:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:28:47,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 19:28:47,950 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:28:47,950 INFO L175 Difference]: Start difference. First operand has 347 places, 252 transitions, 2333 flow. Second operand 11 states and 121 transitions. [2024-06-27 19:28:47,950 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 274 transitions, 2983 flow [2024-06-27 19:28:48,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 274 transitions, 2793 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 19:28:48,590 INFO L231 Difference]: Finished difference. Result has 343 places, 253 transitions, 2391 flow [2024-06-27 19:28:48,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2143, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2391, PETRI_PLACES=343, PETRI_TRANSITIONS=253} [2024-06-27 19:28:48,591 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-27 19:28:48,591 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 253 transitions, 2391 flow [2024-06-27 19:28:48,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:28:48,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:28:48,591 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:28:48,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable170 [2024-06-27 19:28:48,591 INFO L420 AbstractCegarLoop]: === Iteration 172 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:28:48,591 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:28:48,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1074174673, now seen corresponding path program 25 times [2024-06-27 19:28:48,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:28:48,592 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664642070] [2024-06-27 19:28:48,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:28:48,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:28:48,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:28:52,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:28:52,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:28:52,368 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664642070] [2024-06-27 19:28:52,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664642070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:28:52,368 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:28:52,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:28:52,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65139617] [2024-06-27 19:28:52,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:28:52,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:28:52,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:28:52,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:28:52,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:28:52,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:28:52,553 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 253 transitions, 2391 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:28:52,553 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:28:52,553 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:28:52,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:28:53,562 INFO L124 PetriNetUnfolderBase]: 811/1541 cut-off events. [2024-06-27 19:28:53,563 INFO L125 PetriNetUnfolderBase]: For 181061/181061 co-relation queries the response was YES. [2024-06-27 19:28:53,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9034 conditions, 1541 events. 811/1541 cut-off events. For 181061/181061 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 8910 event pairs, 164 based on Foata normal form. 2/1539 useless extension candidates. Maximal degree in co-relation 8884. Up to 1317 conditions per place. [2024-06-27 19:28:53,579 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 225 selfloop transitions, 51 changer transitions 0/278 dead transitions. [2024-06-27 19:28:53,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 278 transitions, 3057 flow [2024-06-27 19:28:53,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:28:53,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:28:53,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 132 transitions. [2024-06-27 19:28:53,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:28:53,580 INFO L175 Difference]: Start difference. First operand has 343 places, 253 transitions, 2391 flow. Second operand 12 states and 132 transitions. [2024-06-27 19:28:53,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 278 transitions, 3057 flow [2024-06-27 19:28:54,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 278 transitions, 2819 flow, removed 26 selfloop flow, removed 9 redundant places. [2024-06-27 19:28:54,226 INFO L231 Difference]: Finished difference. Result has 346 places, 254 transitions, 2317 flow [2024-06-27 19:28:54,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2153, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=253, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=202, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2317, PETRI_PLACES=346, PETRI_TRANSITIONS=254} [2024-06-27 19:28:54,226 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-27 19:28:54,227 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 254 transitions, 2317 flow [2024-06-27 19:28:54,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:28:54,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:28:54,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:28:54,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable171 [2024-06-27 19:28:54,227 INFO L420 AbstractCegarLoop]: === Iteration 173 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:28:54,227 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:28:54,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1768548821, now seen corresponding path program 18 times [2024-06-27 19:28:54,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:28:54,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063161351] [2024-06-27 19:28:54,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:28:54,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:28:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:28:57,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:28:57,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:28:57,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063161351] [2024-06-27 19:28:57,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063161351] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:28:57,461 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:28:57,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:28:57,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322897926] [2024-06-27 19:28:57,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:28:57,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:28:57,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:28:57,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:28:57,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:28:57,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:28:57,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 254 transitions, 2317 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:28:57,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:28:57,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:28:57,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:28:58,402 INFO L124 PetriNetUnfolderBase]: 852/1628 cut-off events. [2024-06-27 19:28:58,402 INFO L125 PetriNetUnfolderBase]: For 289525/289525 co-relation queries the response was YES. [2024-06-27 19:28:58,413 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10307 conditions, 1628 events. 852/1628 cut-off events. For 289525/289525 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 9486 event pairs, 345 based on Foata normal form. 8/1635 useless extension candidates. Maximal degree in co-relation 10156. Up to 1413 conditions per place. [2024-06-27 19:28:58,416 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 249 selfloop transitions, 19 changer transitions 12/282 dead transitions. [2024-06-27 19:28:58,416 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 282 transitions, 3223 flow [2024-06-27 19:28:58,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:28:58,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:28:58,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 129 transitions. [2024-06-27 19:28:58,417 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3359375 [2024-06-27 19:28:58,417 INFO L175 Difference]: Start difference. First operand has 346 places, 254 transitions, 2317 flow. Second operand 12 states and 129 transitions. [2024-06-27 19:28:58,417 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 282 transitions, 3223 flow [2024-06-27 19:28:59,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 282 transitions, 3069 flow, removed 27 selfloop flow, removed 10 redundant places. [2024-06-27 19:28:59,213 INFO L231 Difference]: Finished difference. Result has 348 places, 250 transitions, 2174 flow [2024-06-27 19:28:59,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2163, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=254, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=235, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2174, PETRI_PLACES=348, PETRI_TRANSITIONS=250} [2024-06-27 19:28:59,214 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-27 19:28:59,214 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 250 transitions, 2174 flow [2024-06-27 19:28:59,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:28:59,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:28:59,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:28:59,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable172 [2024-06-27 19:28:59,214 INFO L420 AbstractCegarLoop]: === Iteration 174 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:28:59,214 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:28:59,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1469249433, now seen corresponding path program 26 times [2024-06-27 19:28:59,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:28:59,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1968384075] [2024-06-27 19:28:59,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:28:59,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:28:59,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:02,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:29:02,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:02,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1968384075] [2024-06-27 19:29:02,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1968384075] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:02,899 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:02,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:29:02,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282188599] [2024-06-27 19:29:02,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:02,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:29:02,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:02,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:29:02,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:29:03,053 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:29:03,053 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 250 transitions, 2174 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:03,054 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:03,054 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:29:03,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:03,888 INFO L124 PetriNetUnfolderBase]: 829/1579 cut-off events. [2024-06-27 19:29:03,888 INFO L125 PetriNetUnfolderBase]: For 253685/253685 co-relation queries the response was YES. [2024-06-27 19:29:03,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10070 conditions, 1579 events. 829/1579 cut-off events. For 253685/253685 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 9112 event pairs, 185 based on Foata normal form. 2/1577 useless extension candidates. Maximal degree in co-relation 9918. Up to 1391 conditions per place. [2024-06-27 19:29:03,903 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 226 selfloop transitions, 44 changer transitions 0/272 dead transitions. [2024-06-27 19:29:03,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 272 transitions, 2818 flow [2024-06-27 19:29:03,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:29:03,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:29:03,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 121 transitions. [2024-06-27 19:29:03,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34375 [2024-06-27 19:29:03,904 INFO L175 Difference]: Start difference. First operand has 348 places, 250 transitions, 2174 flow. Second operand 11 states and 121 transitions. [2024-06-27 19:29:03,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 272 transitions, 2818 flow [2024-06-27 19:29:04,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 272 transitions, 2778 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 19:29:04,732 INFO L231 Difference]: Finished difference. Result has 344 places, 251 transitions, 2282 flow [2024-06-27 19:29:04,732 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2134, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=250, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2282, PETRI_PLACES=344, PETRI_TRANSITIONS=251} [2024-06-27 19:29:04,733 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-27 19:29:04,733 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 251 transitions, 2282 flow [2024-06-27 19:29:04,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:04,733 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:04,733 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:04,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable173 [2024-06-27 19:29:04,733 INFO L420 AbstractCegarLoop]: === Iteration 175 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:29:04,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:04,734 INFO L85 PathProgramCache]: Analyzing trace with hash 2131517069, now seen corresponding path program 19 times [2024-06-27 19:29:04,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:04,734 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269670579] [2024-06-27 19:29:04,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:04,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:04,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:08,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:29:08,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:08,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269670579] [2024-06-27 19:29:08,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269670579] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:08,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:08,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:29:08,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637995499] [2024-06-27 19:29:08,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:08,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:29:08,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:08,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:29:08,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:29:08,796 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:29:08,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 251 transitions, 2282 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:08,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:08,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:29:08,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:09,752 INFO L124 PetriNetUnfolderBase]: 845/1615 cut-off events. [2024-06-27 19:29:09,752 INFO L125 PetriNetUnfolderBase]: For 308373/308373 co-relation queries the response was YES. [2024-06-27 19:29:09,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10292 conditions, 1615 events. 845/1615 cut-off events. For 308373/308373 co-relation queries the response was YES. Maximal size of possible extension queue 130. Compared 9378 event pairs, 187 based on Foata normal form. 10/1621 useless extension candidates. Maximal degree in co-relation 10140. Up to 1361 conditions per place. [2024-06-27 19:29:09,771 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 219 selfloop transitions, 47 changer transitions 11/279 dead transitions. [2024-06-27 19:29:09,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 279 transitions, 2928 flow [2024-06-27 19:29:09,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:29:09,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:29:09,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 135 transitions. [2024-06-27 19:29:09,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3515625 [2024-06-27 19:29:09,772 INFO L175 Difference]: Start difference. First operand has 344 places, 251 transitions, 2282 flow. Second operand 12 states and 135 transitions. [2024-06-27 19:29:09,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 279 transitions, 2928 flow [2024-06-27 19:29:10,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 279 transitions, 2792 flow, removed 25 selfloop flow, removed 9 redundant places. [2024-06-27 19:29:10,542 INFO L231 Difference]: Finished difference. Result has 347 places, 248 transitions, 2220 flow [2024-06-27 19:29:10,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2146, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=204, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2220, PETRI_PLACES=347, PETRI_TRANSITIONS=248} [2024-06-27 19:29:10,542 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-27 19:29:10,542 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 248 transitions, 2220 flow [2024-06-27 19:29:10,543 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:10,543 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:10,543 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:10,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable174 [2024-06-27 19:29:10,543 INFO L420 AbstractCegarLoop]: === Iteration 176 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:29:10,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:10,544 INFO L85 PathProgramCache]: Analyzing trace with hash 603858987, now seen corresponding path program 27 times [2024-06-27 19:29:10,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:10,544 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910822876] [2024-06-27 19:29:10,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:10,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:10,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:13,746 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:29:13,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:13,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910822876] [2024-06-27 19:29:13,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910822876] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:13,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:13,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:29:13,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193101756] [2024-06-27 19:29:13,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:13,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:29:13,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:13,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:29:13,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:29:13,919 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:29:13,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 248 transitions, 2220 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:13,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:13,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:29:13,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:14,611 INFO L124 PetriNetUnfolderBase]: 823/1573 cut-off events. [2024-06-27 19:29:14,611 INFO L125 PetriNetUnfolderBase]: For 258507/258507 co-relation queries the response was YES. [2024-06-27 19:29:14,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10181 conditions, 1573 events. 823/1573 cut-off events. For 258507/258507 co-relation queries the response was YES. Maximal size of possible extension queue 127. Compared 9101 event pairs, 183 based on Foata normal form. 2/1571 useless extension candidates. Maximal degree in co-relation 10028. Up to 1385 conditions per place. [2024-06-27 19:29:14,628 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 225 selfloop transitions, 43 changer transitions 0/270 dead transitions. [2024-06-27 19:29:14,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 270 transitions, 2864 flow [2024-06-27 19:29:14,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:29:14,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:29:14,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 19:29:14,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-27 19:29:14,630 INFO L175 Difference]: Start difference. First operand has 347 places, 248 transitions, 2220 flow. Second operand 11 states and 120 transitions. [2024-06-27 19:29:14,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 270 transitions, 2864 flow [2024-06-27 19:29:15,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 270 transitions, 2766 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 19:29:15,419 INFO L231 Difference]: Finished difference. Result has 344 places, 249 transitions, 2272 flow [2024-06-27 19:29:15,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2122, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2272, PETRI_PLACES=344, PETRI_TRANSITIONS=249} [2024-06-27 19:29:15,420 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-27 19:29:15,420 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 249 transitions, 2272 flow [2024-06-27 19:29:15,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:15,420 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:15,420 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:15,420 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable175 [2024-06-27 19:29:15,420 INFO L420 AbstractCegarLoop]: === Iteration 177 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:29:15,420 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:15,420 INFO L85 PathProgramCache]: Analyzing trace with hash -932182673, now seen corresponding path program 20 times [2024-06-27 19:29:15,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:15,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878386103] [2024-06-27 19:29:15,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:15,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:15,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:19,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:29:19,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:19,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878386103] [2024-06-27 19:29:19,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878386103] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:19,606 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:19,606 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:29:19,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39601795] [2024-06-27 19:29:19,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:19,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:29:19,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:19,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:29:19,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:29:19,748 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:29:19,748 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 249 transitions, 2272 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:19,749 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:19,749 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:29:19,749 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:20,571 INFO L124 PetriNetUnfolderBase]: 850/1634 cut-off events. [2024-06-27 19:29:20,571 INFO L125 PetriNetUnfolderBase]: For 336732/336732 co-relation queries the response was YES. [2024-06-27 19:29:20,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11034 conditions, 1634 events. 850/1634 cut-off events. For 336732/336732 co-relation queries the response was YES. Maximal size of possible extension queue 128. Compared 9525 event pairs, 348 based on Foata normal form. 8/1641 useless extension candidates. Maximal degree in co-relation 10882. Up to 1452 conditions per place. [2024-06-27 19:29:20,589 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 245 selfloop transitions, 20 changer transitions 8/275 dead transitions. [2024-06-27 19:29:20,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 275 transitions, 3160 flow [2024-06-27 19:29:20,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:29:20,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:29:20,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 125 transitions. [2024-06-27 19:29:20,590 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3255208333333333 [2024-06-27 19:29:20,590 INFO L175 Difference]: Start difference. First operand has 344 places, 249 transitions, 2272 flow. Second operand 12 states and 125 transitions. [2024-06-27 19:29:20,590 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 275 transitions, 3160 flow [2024-06-27 19:29:21,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 275 transitions, 3020 flow, removed 28 selfloop flow, removed 9 redundant places. [2024-06-27 19:29:21,587 INFO L231 Difference]: Finished difference. Result has 347 places, 247 transitions, 2160 flow [2024-06-27 19:29:21,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2132, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=229, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2160, PETRI_PLACES=347, PETRI_TRANSITIONS=247} [2024-06-27 19:29:21,587 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-27 19:29:21,587 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 247 transitions, 2160 flow [2024-06-27 19:29:21,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:21,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:21,588 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:21,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable176 [2024-06-27 19:29:21,588 INFO L420 AbstractCegarLoop]: === Iteration 178 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:29:21,588 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:21,588 INFO L85 PathProgramCache]: Analyzing trace with hash -129617319, now seen corresponding path program 28 times [2024-06-27 19:29:21,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:21,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606380575] [2024-06-27 19:29:21,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:21,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:21,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:25,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:29:25,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:25,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606380575] [2024-06-27 19:29:25,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606380575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:25,230 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:25,230 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:29:25,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985494415] [2024-06-27 19:29:25,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:25,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:29:25,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:25,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:29:25,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:29:25,377 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:29:25,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 247 transitions, 2160 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:25,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:25,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:29:25,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:26,140 INFO L124 PetriNetUnfolderBase]: 830/1594 cut-off events. [2024-06-27 19:29:26,141 INFO L125 PetriNetUnfolderBase]: For 301080/301080 co-relation queries the response was YES. [2024-06-27 19:29:26,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10857 conditions, 1594 events. 830/1594 cut-off events. For 301080/301080 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 9239 event pairs, 166 based on Foata normal form. 2/1592 useless extension candidates. Maximal degree in co-relation 10704. Up to 1277 conditions per place. [2024-06-27 19:29:26,159 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 196 selfloop transitions, 73 changer transitions 0/271 dead transitions. [2024-06-27 19:29:26,159 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 271 transitions, 2816 flow [2024-06-27 19:29:26,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:29:26,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:29:26,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 126 transitions. [2024-06-27 19:29:26,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35795454545454547 [2024-06-27 19:29:26,160 INFO L175 Difference]: Start difference. First operand has 347 places, 247 transitions, 2160 flow. Second operand 11 states and 126 transitions. [2024-06-27 19:29:26,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 271 transitions, 2816 flow [2024-06-27 19:29:27,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 271 transitions, 2772 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 19:29:27,181 INFO L231 Difference]: Finished difference. Result has 344 places, 248 transitions, 2328 flow [2024-06-27 19:29:27,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2116, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2328, PETRI_PLACES=344, PETRI_TRANSITIONS=248} [2024-06-27 19:29:27,181 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-27 19:29:27,182 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 248 transitions, 2328 flow [2024-06-27 19:29:27,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:27,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:27,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:27,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable177 [2024-06-27 19:29:27,182 INFO L420 AbstractCegarLoop]: === Iteration 179 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:29:27,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:27,183 INFO L85 PathProgramCache]: Analyzing trace with hash 124935097, now seen corresponding path program 21 times [2024-06-27 19:29:27,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:27,183 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2910232] [2024-06-27 19:29:27,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:27,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:27,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:31,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:29:31,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:31,770 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2910232] [2024-06-27 19:29:31,770 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2910232] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:31,770 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:31,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:29:31,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359299884] [2024-06-27 19:29:31,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:31,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:29:31,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:31,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:29:31,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:29:31,984 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:29:31,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 248 transitions, 2328 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:31,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:31,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:29:31,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:32,866 INFO L124 PetriNetUnfolderBase]: 831/1597 cut-off events. [2024-06-27 19:29:32,866 INFO L125 PetriNetUnfolderBase]: For 309456/309456 co-relation queries the response was YES. [2024-06-27 19:29:32,880 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10322 conditions, 1597 events. 831/1597 cut-off events. For 309456/309456 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9320 event pairs, 345 based on Foata normal form. 10/1606 useless extension candidates. Maximal degree in co-relation 10170. Up to 1498 conditions per place. [2024-06-27 19:29:32,883 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 238 selfloop transitions, 16 changer transitions 13/269 dead transitions. [2024-06-27 19:29:32,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 355 places, 269 transitions, 2936 flow [2024-06-27 19:29:32,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:29:32,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:29:32,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 120 transitions. [2024-06-27 19:29:32,885 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3125 [2024-06-27 19:29:32,885 INFO L175 Difference]: Start difference. First operand has 344 places, 248 transitions, 2328 flow. Second operand 12 states and 120 transitions. [2024-06-27 19:29:32,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 355 places, 269 transitions, 2936 flow [2024-06-27 19:29:33,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 346 places, 269 transitions, 2734 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-27 19:29:33,683 INFO L231 Difference]: Finished difference. Result has 347 places, 244 transitions, 2131 flow [2024-06-27 19:29:33,683 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2126, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=248, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2131, PETRI_PLACES=347, PETRI_TRANSITIONS=244} [2024-06-27 19:29:33,683 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 316 predicate places. [2024-06-27 19:29:33,684 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 244 transitions, 2131 flow [2024-06-27 19:29:33,684 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:33,684 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:33,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:33,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable178 [2024-06-27 19:29:33,684 INFO L420 AbstractCegarLoop]: === Iteration 180 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:29:33,685 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:33,685 INFO L85 PathProgramCache]: Analyzing trace with hash -136968969, now seen corresponding path program 29 times [2024-06-27 19:29:33,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:33,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134851131] [2024-06-27 19:29:33,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:33,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:33,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:37,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:29:37,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:37,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134851131] [2024-06-27 19:29:37,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134851131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:37,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:37,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:29:37,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919658352] [2024-06-27 19:29:37,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:37,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:29:37,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:37,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:29:37,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:29:37,524 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:29:37,524 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 244 transitions, 2131 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:37,524 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:37,524 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:29:37,524 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:38,237 INFO L124 PetriNetUnfolderBase]: 807/1549 cut-off events. [2024-06-27 19:29:38,238 INFO L125 PetriNetUnfolderBase]: For 258717/258717 co-relation queries the response was YES. [2024-06-27 19:29:38,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9993 conditions, 1549 events. 807/1549 cut-off events. For 258717/258717 co-relation queries the response was YES. Maximal size of possible extension queue 123. Compared 8951 event pairs, 155 based on Foata normal form. 2/1547 useless extension candidates. Maximal degree in co-relation 9840. Up to 1254 conditions per place. [2024-06-27 19:29:38,255 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 196 selfloop transitions, 69 changer transitions 0/267 dead transitions. [2024-06-27 19:29:38,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 267 transitions, 2777 flow [2024-06-27 19:29:38,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:29:38,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:29:38,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 124 transitions. [2024-06-27 19:29:38,256 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3522727272727273 [2024-06-27 19:29:38,256 INFO L175 Difference]: Start difference. First operand has 347 places, 244 transitions, 2131 flow. Second operand 11 states and 124 transitions. [2024-06-27 19:29:38,257 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 267 transitions, 2777 flow [2024-06-27 19:29:39,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 267 transitions, 2739 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-27 19:29:39,165 INFO L231 Difference]: Finished difference. Result has 342 places, 245 transitions, 2299 flow [2024-06-27 19:29:39,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2093, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=244, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2299, PETRI_PLACES=342, PETRI_TRANSITIONS=245} [2024-06-27 19:29:39,166 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-27 19:29:39,166 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 245 transitions, 2299 flow [2024-06-27 19:29:39,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:39,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:39,166 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:39,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable179 [2024-06-27 19:29:39,166 INFO L420 AbstractCegarLoop]: === Iteration 181 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:29:39,166 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:39,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1482868979, now seen corresponding path program 22 times [2024-06-27 19:29:39,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:39,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127439729] [2024-06-27 19:29:39,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:39,167 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:39,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:44,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:29:44,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:44,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127439729] [2024-06-27 19:29:44,982 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127439729] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:44,982 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:44,982 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:29:44,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53455595] [2024-06-27 19:29:44,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:44,982 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:29:44,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:44,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:29:44,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:29:45,143 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:29:45,143 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 245 transitions, 2299 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:45,143 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:45,143 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:29:45,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:46,201 INFO L124 PetriNetUnfolderBase]: 823/1585 cut-off events. [2024-06-27 19:29:46,201 INFO L125 PetriNetUnfolderBase]: For 304151/304151 co-relation queries the response was YES. [2024-06-27 19:29:46,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10223 conditions, 1585 events. 823/1585 cut-off events. For 304151/304151 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 9232 event pairs, 157 based on Foata normal form. 10/1591 useless extension candidates. Maximal degree in co-relation 10072. Up to 1224 conditions per place. [2024-06-27 19:29:46,218 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 190 selfloop transitions, 71 changer transitions 11/274 dead transitions. [2024-06-27 19:29:46,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 274 transitions, 2939 flow [2024-06-27 19:29:46,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:29:46,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:29:46,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 138 transitions. [2024-06-27 19:29:46,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.359375 [2024-06-27 19:29:46,219 INFO L175 Difference]: Start difference. First operand has 342 places, 245 transitions, 2299 flow. Second operand 12 states and 138 transitions. [2024-06-27 19:29:46,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 274 transitions, 2939 flow [2024-06-27 19:29:47,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 274 transitions, 2743 flow, removed 30 selfloop flow, removed 9 redundant places. [2024-06-27 19:29:47,038 INFO L231 Difference]: Finished difference. Result has 345 places, 242 transitions, 2229 flow [2024-06-27 19:29:47,038 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2103, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=245, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2229, PETRI_PLACES=345, PETRI_TRANSITIONS=242} [2024-06-27 19:29:47,038 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-27 19:29:47,038 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 242 transitions, 2229 flow [2024-06-27 19:29:47,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:47,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:47,038 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:47,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable180 [2024-06-27 19:29:47,039 INFO L420 AbstractCegarLoop]: === Iteration 182 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:29:47,039 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:47,039 INFO L85 PathProgramCache]: Analyzing trace with hash 728625643, now seen corresponding path program 23 times [2024-06-27 19:29:47,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:47,039 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242257153] [2024-06-27 19:29:47,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:47,039 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:51,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:29:51,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:51,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242257153] [2024-06-27 19:29:51,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242257153] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:51,114 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:51,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:29:51,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112703639] [2024-06-27 19:29:51,114 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:51,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:29:51,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:51,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:29:51,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:29:51,251 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:29:51,252 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 242 transitions, 2229 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:51,252 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:51,252 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:29:51,252 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:52,205 INFO L124 PetriNetUnfolderBase]: 813/1571 cut-off events. [2024-06-27 19:29:52,205 INFO L125 PetriNetUnfolderBase]: For 307413/307413 co-relation queries the response was YES. [2024-06-27 19:29:52,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10090 conditions, 1571 events. 813/1571 cut-off events. For 307413/307413 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 9139 event pairs, 151 based on Foata normal form. 10/1577 useless extension candidates. Maximal degree in co-relation 9938. Up to 1232 conditions per place. [2024-06-27 19:29:52,219 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 190 selfloop transitions, 67 changer transitions 11/270 dead transitions. [2024-06-27 19:29:52,219 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 270 transitions, 2857 flow [2024-06-27 19:29:52,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:29:52,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:29:52,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-27 19:29:52,220 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-27 19:29:52,220 INFO L175 Difference]: Start difference. First operand has 345 places, 242 transitions, 2229 flow. Second operand 12 states and 136 transitions. [2024-06-27 19:29:52,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 270 transitions, 2857 flow [2024-06-27 19:29:53,013 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 270 transitions, 2711 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 19:29:53,015 INFO L231 Difference]: Finished difference. Result has 343 places, 239 transitions, 2201 flow [2024-06-27 19:29:53,015 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2083, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=242, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2201, PETRI_PLACES=343, PETRI_TRANSITIONS=239} [2024-06-27 19:29:53,016 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-27 19:29:53,016 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 239 transitions, 2201 flow [2024-06-27 19:29:53,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:53,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:53,016 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:53,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable181 [2024-06-27 19:29:53,016 INFO L420 AbstractCegarLoop]: === Iteration 183 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:29:53,016 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:53,016 INFO L85 PathProgramCache]: Analyzing trace with hash 603714837, now seen corresponding path program 30 times [2024-06-27 19:29:53,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:53,016 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1102219927] [2024-06-27 19:29:53,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:53,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:29:56,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:29:56,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:29:56,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1102219927] [2024-06-27 19:29:56,926 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1102219927] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:29:56,926 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:29:56,926 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:29:56,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586824898] [2024-06-27 19:29:56,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:29:56,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:29:56,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:29:56,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:29:56,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:29:57,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:29:57,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 239 transitions, 2201 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:57,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:29:57,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:29:57,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:29:57,864 INFO L124 PetriNetUnfolderBase]: 791/1529 cut-off events. [2024-06-27 19:29:57,864 INFO L125 PetriNetUnfolderBase]: For 250634/250634 co-relation queries the response was YES. [2024-06-27 19:29:57,877 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10005 conditions, 1529 events. 791/1529 cut-off events. For 250634/250634 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8886 event pairs, 177 based on Foata normal form. 2/1527 useless extension candidates. Maximal degree in co-relation 9854. Up to 1341 conditions per place. [2024-06-27 19:29:57,880 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 217 selfloop transitions, 42 changer transitions 0/261 dead transitions. [2024-06-27 19:29:57,880 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 261 transitions, 2833 flow [2024-06-27 19:29:57,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:29:57,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:29:57,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 19:29:57,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-27 19:29:57,882 INFO L175 Difference]: Start difference. First operand has 343 places, 239 transitions, 2201 flow. Second operand 11 states and 119 transitions. [2024-06-27 19:29:57,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 261 transitions, 2833 flow [2024-06-27 19:29:58,571 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 261 transitions, 2695 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 19:29:58,573 INFO L231 Difference]: Finished difference. Result has 340 places, 240 transitions, 2217 flow [2024-06-27 19:29:58,574 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2063, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2217, PETRI_PLACES=340, PETRI_TRANSITIONS=240} [2024-06-27 19:29:58,574 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 309 predicate places. [2024-06-27 19:29:58,574 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 240 transitions, 2217 flow [2024-06-27 19:29:58,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:29:58,574 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:29:58,574 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:29:58,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable182 [2024-06-27 19:29:58,575 INFO L420 AbstractCegarLoop]: === Iteration 184 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:29:58,575 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:29:58,575 INFO L85 PathProgramCache]: Analyzing trace with hash 728410317, now seen corresponding path program 31 times [2024-06-27 19:29:58,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:29:58,575 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533392856] [2024-06-27 19:29:58,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:29:58,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:29:58,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:02,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:02,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:02,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533392856] [2024-06-27 19:30:02,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533392856] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:02,005 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:02,005 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:30:02,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247313451] [2024-06-27 19:30:02,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:02,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:30:02,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:02,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:30:02,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:30:02,128 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:30:02,128 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 240 transitions, 2217 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:02,129 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:02,129 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:30:02,129 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:02,864 INFO L124 PetriNetUnfolderBase]: 795/1537 cut-off events. [2024-06-27 19:30:02,865 INFO L125 PetriNetUnfolderBase]: For 248683/248683 co-relation queries the response was YES. [2024-06-27 19:30:02,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10052 conditions, 1537 events. 795/1537 cut-off events. For 248683/248683 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8938 event pairs, 147 based on Foata normal form. 2/1535 useless extension candidates. Maximal degree in co-relation 9902. Up to 1242 conditions per place. [2024-06-27 19:30:02,881 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 193 selfloop transitions, 68 changer transitions 0/263 dead transitions. [2024-06-27 19:30:02,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 350 places, 263 transitions, 2859 flow [2024-06-27 19:30:02,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:30:02,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:30:02,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 123 transitions. [2024-06-27 19:30:02,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3494318181818182 [2024-06-27 19:30:02,882 INFO L175 Difference]: Start difference. First operand has 340 places, 240 transitions, 2217 flow. Second operand 11 states and 123 transitions. [2024-06-27 19:30:02,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 350 places, 263 transitions, 2859 flow [2024-06-27 19:30:03,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 263 transitions, 2715 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-27 19:30:03,648 INFO L231 Difference]: Finished difference. Result has 342 places, 241 transitions, 2281 flow [2024-06-27 19:30:03,648 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2073, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2281, PETRI_PLACES=342, PETRI_TRANSITIONS=241} [2024-06-27 19:30:03,649 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-27 19:30:03,649 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 241 transitions, 2281 flow [2024-06-27 19:30:03,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:03,649 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:03,649 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:03,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable183 [2024-06-27 19:30:03,649 INFO L420 AbstractCegarLoop]: === Iteration 185 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:30:03,650 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:03,650 INFO L85 PathProgramCache]: Analyzing trace with hash -1627176197, now seen corresponding path program 24 times [2024-06-27 19:30:03,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:03,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [585642726] [2024-06-27 19:30:03,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:03,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:03,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:07,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:07,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:07,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [585642726] [2024-06-27 19:30:07,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [585642726] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:07,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:07,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:30:07,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287654365] [2024-06-27 19:30:07,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:07,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:30:07,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:07,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:30:07,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:30:07,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:30:07,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 241 transitions, 2281 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:07,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:07,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:30:07,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:08,784 INFO L124 PetriNetUnfolderBase]: 797/1547 cut-off events. [2024-06-27 19:30:08,784 INFO L125 PetriNetUnfolderBase]: For 278581/278581 co-relation queries the response was YES. [2024-06-27 19:30:08,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9599 conditions, 1547 events. 797/1547 cut-off events. For 278581/278581 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 9017 event pairs, 141 based on Foata normal form. 10/1553 useless extension candidates. Maximal degree in co-relation 9448. Up to 914 conditions per place. [2024-06-27 19:30:08,801 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 145 selfloop transitions, 110 changer transitions 11/268 dead transitions. [2024-06-27 19:30:08,801 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 268 transitions, 2903 flow [2024-06-27 19:30:08,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:30:08,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:30:08,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-27 19:30:08,802 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-27 19:30:08,802 INFO L175 Difference]: Start difference. First operand has 342 places, 241 transitions, 2281 flow. Second operand 12 states and 134 transitions. [2024-06-27 19:30:08,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 268 transitions, 2903 flow [2024-06-27 19:30:09,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 268 transitions, 2705 flow, removed 32 selfloop flow, removed 9 redundant places. [2024-06-27 19:30:09,486 INFO L231 Difference]: Finished difference. Result has 345 places, 238 transitions, 2282 flow [2024-06-27 19:30:09,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2083, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=110, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2282, PETRI_PLACES=345, PETRI_TRANSITIONS=238} [2024-06-27 19:30:09,486 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-27 19:30:09,486 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 238 transitions, 2282 flow [2024-06-27 19:30:09,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:09,487 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:09,487 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:09,487 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable184 [2024-06-27 19:30:09,487 INFO L420 AbstractCegarLoop]: === Iteration 186 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:30:09,487 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:09,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1689530355, now seen corresponding path program 32 times [2024-06-27 19:30:09,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:09,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021033607] [2024-06-27 19:30:09,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:09,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:09,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:13,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:13,379 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:13,379 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021033607] [2024-06-27 19:30:13,379 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021033607] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:13,379 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:13,379 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:30:13,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98279146] [2024-06-27 19:30:13,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:13,379 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:30:13,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:13,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:30:13,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:30:13,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:30:13,571 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 238 transitions, 2282 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:13,571 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:13,571 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:30:13,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:14,387 INFO L124 PetriNetUnfolderBase]: 775/1505 cut-off events. [2024-06-27 19:30:14,387 INFO L125 PetriNetUnfolderBase]: For 229015/229015 co-relation queries the response was YES. [2024-06-27 19:30:14,400 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9572 conditions, 1505 events. 775/1505 cut-off events. For 229015/229015 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 8737 event pairs, 145 based on Foata normal form. 2/1503 useless extension candidates. Maximal degree in co-relation 9420. Up to 1224 conditions per place. [2024-06-27 19:30:14,403 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 191 selfloop transitions, 66 changer transitions 0/259 dead transitions. [2024-06-27 19:30:14,404 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 259 transitions, 2912 flow [2024-06-27 19:30:14,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:30:14,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:30:14,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 120 transitions. [2024-06-27 19:30:14,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3409090909090909 [2024-06-27 19:30:14,404 INFO L175 Difference]: Start difference. First operand has 345 places, 238 transitions, 2282 flow. Second operand 11 states and 120 transitions. [2024-06-27 19:30:14,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 259 transitions, 2912 flow [2024-06-27 19:30:15,241 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 259 transitions, 2686 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 19:30:15,243 INFO L231 Difference]: Finished difference. Result has 342 places, 239 transitions, 2262 flow [2024-06-27 19:30:15,243 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2056, PETRI_DIFFERENCE_MINUEND_PLACES=331, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2262, PETRI_PLACES=342, PETRI_TRANSITIONS=239} [2024-06-27 19:30:15,243 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 311 predicate places. [2024-06-27 19:30:15,243 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 239 transitions, 2262 flow [2024-06-27 19:30:15,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:15,244 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:15,244 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:15,244 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable185 [2024-06-27 19:30:15,244 INFO L420 AbstractCegarLoop]: === Iteration 187 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:30:15,244 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:15,245 INFO L85 PathProgramCache]: Analyzing trace with hash -336276339, now seen corresponding path program 33 times [2024-06-27 19:30:15,245 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:15,245 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17046452] [2024-06-27 19:30:15,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:15,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:18,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:18,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:18,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17046452] [2024-06-27 19:30:18,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17046452] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:18,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:18,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:30:18,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11252514] [2024-06-27 19:30:18,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:18,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:30:18,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:18,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:30:18,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:30:18,810 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:30:18,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 239 transitions, 2262 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:18,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:18,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:30:18,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:19,637 INFO L124 PetriNetUnfolderBase]: 779/1513 cut-off events. [2024-06-27 19:30:19,637 INFO L125 PetriNetUnfolderBase]: For 227483/227483 co-relation queries the response was YES. [2024-06-27 19:30:19,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9569 conditions, 1513 events. 779/1513 cut-off events. For 227483/227483 co-relation queries the response was YES. Maximal size of possible extension queue 120. Compared 8804 event pairs, 145 based on Foata normal form. 2/1511 useless extension candidates. Maximal degree in co-relation 9418. Up to 1232 conditions per place. [2024-06-27 19:30:19,654 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 193 selfloop transitions, 65 changer transitions 0/260 dead transitions. [2024-06-27 19:30:19,654 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 352 places, 260 transitions, 2896 flow [2024-06-27 19:30:19,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:30:19,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:30:19,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 119 transitions. [2024-06-27 19:30:19,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3380681818181818 [2024-06-27 19:30:19,655 INFO L175 Difference]: Start difference. First operand has 342 places, 239 transitions, 2262 flow. Second operand 11 states and 119 transitions. [2024-06-27 19:30:19,655 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 352 places, 260 transitions, 2896 flow [2024-06-27 19:30:20,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 260 transitions, 2691 flow, removed 34 selfloop flow, removed 10 redundant places. [2024-06-27 19:30:20,485 INFO L231 Difference]: Finished difference. Result has 343 places, 240 transitions, 2263 flow [2024-06-27 19:30:20,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=239, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=174, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2263, PETRI_PLACES=343, PETRI_TRANSITIONS=240} [2024-06-27 19:30:20,486 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-27 19:30:20,486 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 240 transitions, 2263 flow [2024-06-27 19:30:20,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:20,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:20,486 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:20,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable186 [2024-06-27 19:30:20,486 INFO L420 AbstractCegarLoop]: === Iteration 188 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:30:20,486 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:20,487 INFO L85 PathProgramCache]: Analyzing trace with hash 528964377, now seen corresponding path program 34 times [2024-06-27 19:30:20,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:20,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164961942] [2024-06-27 19:30:20,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:20,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:20,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:23,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:23,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:23,842 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164961942] [2024-06-27 19:30:23,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164961942] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:23,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:23,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:30:23,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721205502] [2024-06-27 19:30:23,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:23,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:30:23,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:23,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:30:23,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:30:24,009 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:30:24,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 240 transitions, 2263 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:24,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:24,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:30:24,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:24,682 INFO L124 PetriNetUnfolderBase]: 783/1521 cut-off events. [2024-06-27 19:30:24,682 INFO L125 PetriNetUnfolderBase]: For 231419/231419 co-relation queries the response was YES. [2024-06-27 19:30:24,696 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9608 conditions, 1521 events. 783/1521 cut-off events. For 231419/231419 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8849 event pairs, 145 based on Foata normal form. 2/1519 useless extension candidates. Maximal degree in co-relation 9457. Up to 1240 conditions per place. [2024-06-27 19:30:24,699 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 195 selfloop transitions, 64 changer transitions 0/261 dead transitions. [2024-06-27 19:30:24,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 261 transitions, 2901 flow [2024-06-27 19:30:24,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:30:24,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:30:24,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 118 transitions. [2024-06-27 19:30:24,701 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3352272727272727 [2024-06-27 19:30:24,701 INFO L175 Difference]: Start difference. First operand has 343 places, 240 transitions, 2263 flow. Second operand 11 states and 118 transitions. [2024-06-27 19:30:24,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 261 transitions, 2901 flow [2024-06-27 19:30:25,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 261 transitions, 2705 flow, removed 34 selfloop flow, removed 9 redundant places. [2024-06-27 19:30:25,420 INFO L231 Difference]: Finished difference. Result has 345 places, 241 transitions, 2273 flow [2024-06-27 19:30:25,420 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2067, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=240, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2273, PETRI_PLACES=345, PETRI_TRANSITIONS=241} [2024-06-27 19:30:25,421 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 314 predicate places. [2024-06-27 19:30:25,421 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 241 transitions, 2273 flow [2024-06-27 19:30:25,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:25,421 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:25,421 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:25,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable187 [2024-06-27 19:30:25,421 INFO L420 AbstractCegarLoop]: === Iteration 189 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:30:25,421 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:25,421 INFO L85 PathProgramCache]: Analyzing trace with hash -1683958229, now seen corresponding path program 25 times [2024-06-27 19:30:25,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:25,421 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839431070] [2024-06-27 19:30:25,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:25,422 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:29,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:29,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:29,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839431070] [2024-06-27 19:30:29,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839431070] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:29,972 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:29,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:30:29,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238912734] [2024-06-27 19:30:29,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:29,973 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:30:29,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:29,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:30:29,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:30:30,213 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:30:30,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 241 transitions, 2273 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:30,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:30,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:30:30,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:31,279 INFO L124 PetriNetUnfolderBase]: 785/1531 cut-off events. [2024-06-27 19:30:31,279 INFO L125 PetriNetUnfolderBase]: For 259926/259926 co-relation queries the response was YES. [2024-06-27 19:30:31,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9049 conditions, 1531 events. 785/1531 cut-off events. For 259926/259926 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 8941 event pairs, 151 based on Foata normal form. 10/1537 useless extension candidates. Maximal degree in co-relation 8897. Up to 1200 conditions per place. [2024-06-27 19:30:31,296 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 191 selfloop transitions, 65 changer transitions 9/267 dead transitions. [2024-06-27 19:30:31,296 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 267 transitions, 2885 flow [2024-06-27 19:30:31,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:30:31,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:30:31,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 133 transitions. [2024-06-27 19:30:31,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3463541666666667 [2024-06-27 19:30:31,297 INFO L175 Difference]: Start difference. First operand has 345 places, 241 transitions, 2273 flow. Second operand 12 states and 133 transitions. [2024-06-27 19:30:31,297 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 267 transitions, 2885 flow [2024-06-27 19:30:31,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 267 transitions, 2689 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-27 19:30:31,954 INFO L231 Difference]: Finished difference. Result has 348 places, 238 transitions, 2193 flow [2024-06-27 19:30:31,954 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2077, PETRI_DIFFERENCE_MINUEND_PLACES=336, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=176, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2193, PETRI_PLACES=348, PETRI_TRANSITIONS=238} [2024-06-27 19:30:31,954 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-27 19:30:31,954 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 238 transitions, 2193 flow [2024-06-27 19:30:31,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:31,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:31,955 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:31,955 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable188 [2024-06-27 19:30:31,955 INFO L420 AbstractCegarLoop]: === Iteration 190 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:30:31,955 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:31,955 INFO L85 PathProgramCache]: Analyzing trace with hash 1937577659, now seen corresponding path program 26 times [2024-06-27 19:30:31,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:31,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497209051] [2024-06-27 19:30:31,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:31,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:31,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:36,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:36,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:36,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497209051] [2024-06-27 19:30:36,286 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497209051] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:36,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:36,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-06-27 19:30:36,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578375955] [2024-06-27 19:30:36,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:36,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-06-27 19:30:36,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:36,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-06-27 19:30:36,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2024-06-27 19:30:36,447 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:30:36,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 238 transitions, 2193 flow. Second operand has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:36,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:36,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:30:36,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:37,365 INFO L124 PetriNetUnfolderBase]: 775/1517 cut-off events. [2024-06-27 19:30:37,365 INFO L125 PetriNetUnfolderBase]: For 261821/261821 co-relation queries the response was YES. [2024-06-27 19:30:37,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8890 conditions, 1517 events. 775/1517 cut-off events. For 261821/261821 co-relation queries the response was YES. Maximal size of possible extension queue 118. Compared 8881 event pairs, 163 based on Foata normal form. 10/1523 useless extension candidates. Maximal degree in co-relation 8737. Up to 1279 conditions per place. [2024-06-27 19:30:37,382 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 211 selfloop transitions, 43 changer transitions 9/265 dead transitions. [2024-06-27 19:30:37,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 357 places, 265 transitions, 2803 flow [2024-06-27 19:30:37,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:30:37,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:30:37,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-06-27 19:30:37,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3489583333333333 [2024-06-27 19:30:37,383 INFO L175 Difference]: Start difference. First operand has 348 places, 238 transitions, 2193 flow. Second operand 12 states and 134 transitions. [2024-06-27 19:30:37,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 357 places, 265 transitions, 2803 flow [2024-06-27 19:30:38,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 265 transitions, 2667 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 19:30:38,025 INFO L231 Difference]: Finished difference. Result has 346 places, 235 transitions, 2125 flow [2024-06-27 19:30:38,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2057, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=238, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2125, PETRI_PLACES=346, PETRI_TRANSITIONS=235} [2024-06-27 19:30:38,026 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-27 19:30:38,026 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 235 transitions, 2125 flow [2024-06-27 19:30:38,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.214285714285714) internal successors, (87), 14 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:38,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:38,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:38,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable189 [2024-06-27 19:30:38,027 INFO L420 AbstractCegarLoop]: === Iteration 191 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:30:38,027 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:38,027 INFO L85 PathProgramCache]: Analyzing trace with hash 935197499, now seen corresponding path program 35 times [2024-06-27 19:30:38,027 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:38,027 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49796563] [2024-06-27 19:30:38,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:38,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:38,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:41,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:41,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:41,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49796563] [2024-06-27 19:30:41,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49796563] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:41,223 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:41,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:30:41,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058872348] [2024-06-27 19:30:41,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:41,224 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:30:41,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:41,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:30:41,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:30:41,356 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:30:41,356 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 235 transitions, 2125 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:41,356 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:41,356 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:30:41,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:42,076 INFO L124 PetriNetUnfolderBase]: 746/1462 cut-off events. [2024-06-27 19:30:42,076 INFO L125 PetriNetUnfolderBase]: For 188111/188111 co-relation queries the response was YES. [2024-06-27 19:30:42,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8319 conditions, 1462 events. 746/1462 cut-off events. For 188111/188111 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8532 event pairs, 162 based on Foata normal form. 2/1460 useless extension candidates. Maximal degree in co-relation 8167. Up to 1288 conditions per place. [2024-06-27 19:30:42,088 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 211 selfloop transitions, 41 changer transitions 0/254 dead transitions. [2024-06-27 19:30:42,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 254 transitions, 2673 flow [2024-06-27 19:30:42,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:30:42,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:30:42,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 117 transitions. [2024-06-27 19:30:42,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33238636363636365 [2024-06-27 19:30:42,089 INFO L175 Difference]: Start difference. First operand has 346 places, 235 transitions, 2125 flow. Second operand 11 states and 117 transitions. [2024-06-27 19:30:42,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 254 transitions, 2673 flow [2024-06-27 19:30:42,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 342 places, 254 transitions, 2581 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-06-27 19:30:42,766 INFO L231 Difference]: Finished difference. Result has 343 places, 235 transitions, 2119 flow [2024-06-27 19:30:42,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=2033, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=194, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2119, PETRI_PLACES=343, PETRI_TRANSITIONS=235} [2024-06-27 19:30:42,767 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 312 predicate places. [2024-06-27 19:30:42,767 INFO L495 AbstractCegarLoop]: Abstraction has has 343 places, 235 transitions, 2119 flow [2024-06-27 19:30:42,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:42,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:42,767 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:42,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable190 [2024-06-27 19:30:42,768 INFO L420 AbstractCegarLoop]: === Iteration 192 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:30:42,768 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:42,768 INFO L85 PathProgramCache]: Analyzing trace with hash 935191919, now seen corresponding path program 36 times [2024-06-27 19:30:42,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:42,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952298113] [2024-06-27 19:30:42,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:42,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:42,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:46,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:46,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:46,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952298113] [2024-06-27 19:30:46,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952298113] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:46,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:46,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:30:46,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838235713] [2024-06-27 19:30:46,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:46,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:30:46,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:46,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:30:46,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:30:46,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:30:46,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 235 transitions, 2119 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:46,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:46,499 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:30:46,499 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:47,237 INFO L124 PetriNetUnfolderBase]: 750/1470 cut-off events. [2024-06-27 19:30:47,237 INFO L125 PetriNetUnfolderBase]: For 187489/187489 co-relation queries the response was YES. [2024-06-27 19:30:47,248 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8448 conditions, 1470 events. 750/1470 cut-off events. For 187489/187489 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 8586 event pairs, 162 based on Foata normal form. 2/1468 useless extension candidates. Maximal degree in co-relation 8297. Up to 1296 conditions per place. [2024-06-27 19:30:47,250 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 213 selfloop transitions, 40 changer transitions 0/255 dead transitions. [2024-06-27 19:30:47,250 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 353 places, 255 transitions, 2743 flow [2024-06-27 19:30:47,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:30:47,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:30:47,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 116 transitions. [2024-06-27 19:30:47,251 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32954545454545453 [2024-06-27 19:30:47,251 INFO L175 Difference]: Start difference. First operand has 343 places, 235 transitions, 2119 flow. Second operand 11 states and 116 transitions. [2024-06-27 19:30:47,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 353 places, 255 transitions, 2743 flow [2024-06-27 19:30:47,955 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 255 transitions, 2601 flow, removed 26 selfloop flow, removed 10 redundant places. [2024-06-27 19:30:47,957 INFO L231 Difference]: Finished difference. Result has 344 places, 236 transitions, 2137 flow [2024-06-27 19:30:47,957 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1977, PETRI_DIFFERENCE_MINUEND_PLACES=333, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=195, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2137, PETRI_PLACES=344, PETRI_TRANSITIONS=236} [2024-06-27 19:30:47,957 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 313 predicate places. [2024-06-27 19:30:47,958 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 236 transitions, 2137 flow [2024-06-27 19:30:47,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:47,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:47,958 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:47,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable191 [2024-06-27 19:30:47,958 INFO L420 AbstractCegarLoop]: === Iteration 193 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:30:47,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:47,959 INFO L85 PathProgramCache]: Analyzing trace with hash 935047769, now seen corresponding path program 37 times [2024-06-27 19:30:47,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:47,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801229021] [2024-06-27 19:30:47,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:47,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:47,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:51,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:51,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:51,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801229021] [2024-06-27 19:30:51,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801229021] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:51,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:51,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:30:51,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011283664] [2024-06-27 19:30:51,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:51,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:30:51,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:51,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:30:51,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:30:51,783 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:30:51,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 236 transitions, 2137 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:51,784 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:51,784 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:30:51,784 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:52,449 INFO L124 PetriNetUnfolderBase]: 754/1478 cut-off events. [2024-06-27 19:30:52,449 INFO L125 PetriNetUnfolderBase]: For 191894/191894 co-relation queries the response was YES. [2024-06-27 19:30:52,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8529 conditions, 1478 events. 754/1478 cut-off events. For 191894/191894 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8641 event pairs, 162 based on Foata normal form. 2/1476 useless extension candidates. Maximal degree in co-relation 8377. Up to 1304 conditions per place. [2024-06-27 19:30:52,466 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 215 selfloop transitions, 39 changer transitions 0/256 dead transitions. [2024-06-27 19:30:52,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 256 transitions, 2765 flow [2024-06-27 19:30:52,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:30:52,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:30:52,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-06-27 19:30:52,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32670454545454547 [2024-06-27 19:30:52,467 INFO L175 Difference]: Start difference. First operand has 344 places, 236 transitions, 2137 flow. Second operand 11 states and 115 transitions. [2024-06-27 19:30:52,467 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 256 transitions, 2765 flow [2024-06-27 19:30:53,108 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 345 places, 256 transitions, 2615 flow, removed 36 selfloop flow, removed 9 redundant places. [2024-06-27 19:30:53,110 INFO L231 Difference]: Finished difference. Result has 346 places, 237 transitions, 2147 flow [2024-06-27 19:30:53,111 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1987, PETRI_DIFFERENCE_MINUEND_PLACES=335, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=236, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2147, PETRI_PLACES=346, PETRI_TRANSITIONS=237} [2024-06-27 19:30:53,111 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 315 predicate places. [2024-06-27 19:30:53,111 INFO L495 AbstractCegarLoop]: Abstraction has has 346 places, 237 transitions, 2147 flow [2024-06-27 19:30:53,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:53,111 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:53,111 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:53,111 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable192 [2024-06-27 19:30:53,111 INFO L420 AbstractCegarLoop]: === Iteration 194 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:30:53,112 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:53,112 INFO L85 PathProgramCache]: Analyzing trace with hash 931472849, now seen corresponding path program 38 times [2024-06-27 19:30:53,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:53,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955576874] [2024-06-27 19:30:53,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:53,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:53,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:30:56,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:30:56,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:30:56,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955576874] [2024-06-27 19:30:56,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955576874] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:30:56,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:30:56,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:30:56,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837288645] [2024-06-27 19:30:56,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:30:56,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:30:56,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:30:56,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:30:56,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:30:56,420 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:30:56,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 346 places, 237 transitions, 2147 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:56,420 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:30:56,420 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:30:56,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:30:57,110 INFO L124 PetriNetUnfolderBase]: 751/1473 cut-off events. [2024-06-27 19:30:57,111 INFO L125 PetriNetUnfolderBase]: For 178319/178319 co-relation queries the response was YES. [2024-06-27 19:30:57,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8096 conditions, 1473 events. 751/1473 cut-off events. For 178319/178319 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8633 event pairs, 159 based on Foata normal form. 2/1471 useless extension candidates. Maximal degree in co-relation 7943. Up to 1299 conditions per place. [2024-06-27 19:30:57,124 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 216 selfloop transitions, 38 changer transitions 0/256 dead transitions. [2024-06-27 19:30:57,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 356 places, 256 transitions, 2699 flow [2024-06-27 19:30:57,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 19:30:57,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 19:30:57,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-06-27 19:30:57,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32386363636363635 [2024-06-27 19:30:57,126 INFO L175 Difference]: Start difference. First operand has 346 places, 237 transitions, 2147 flow. Second operand 11 states and 114 transitions. [2024-06-27 19:30:57,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 356 places, 256 transitions, 2699 flow [2024-06-27 19:30:57,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 256 transitions, 2549 flow, removed 37 selfloop flow, removed 9 redundant places. [2024-06-27 19:30:57,779 INFO L231 Difference]: Finished difference. Result has 348 places, 237 transitions, 2077 flow [2024-06-27 19:30:57,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1997, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=199, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2077, PETRI_PLACES=348, PETRI_TRANSITIONS=237} [2024-06-27 19:30:57,779 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 317 predicate places. [2024-06-27 19:30:57,779 INFO L495 AbstractCegarLoop]: Abstraction has has 348 places, 237 transitions, 2077 flow [2024-06-27 19:30:57,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:30:57,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:30:57,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:30:57,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable193 [2024-06-27 19:30:57,779 INFO L420 AbstractCegarLoop]: === Iteration 195 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:30:57,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:30:57,780 INFO L85 PathProgramCache]: Analyzing trace with hash 1079297775, now seen corresponding path program 27 times [2024-06-27 19:30:57,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:30:57,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973438422] [2024-06-27 19:30:57,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:30:57,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:30:57,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 19:31:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 19:31:01,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 19:31:01,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973438422] [2024-06-27 19:31:01,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973438422] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 19:31:01,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 19:31:01,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 19:31:01,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090296996] [2024-06-27 19:31:01,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 19:31:01,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 19:31:01,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 19:31:01,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 19:31:01,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2024-06-27 19:31:01,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 32 [2024-06-27 19:31:01,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 237 transitions, 2077 flow. Second operand has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:01,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 19:31:01,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 32 [2024-06-27 19:31:01,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 19:31:02,439 INFO L124 PetriNetUnfolderBase]: 738/1450 cut-off events. [2024-06-27 19:31:02,439 INFO L125 PetriNetUnfolderBase]: For 164006/164006 co-relation queries the response was YES. [2024-06-27 19:31:02,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6699 conditions, 1450 events. 738/1450 cut-off events. For 164006/164006 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 8509 event pairs, 156 based on Foata normal form. 10/1456 useless extension candidates. Maximal degree in co-relation 6545. Up to 1226 conditions per place. [2024-06-27 19:31:02,454 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 210 selfloop transitions, 40 changer transitions 9/261 dead transitions. [2024-06-27 19:31:02,454 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 261 transitions, 2653 flow [2024-06-27 19:31:02,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 19:31:02,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 19:31:02,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 130 transitions. [2024-06-27 19:31:02,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3385416666666667 [2024-06-27 19:31:02,455 INFO L175 Difference]: Start difference. First operand has 348 places, 237 transitions, 2077 flow. Second operand 12 states and 130 transitions. [2024-06-27 19:31:02,455 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 261 transitions, 2653 flow [2024-06-27 19:31:02,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 261 transitions, 2414 flow, removed 38 selfloop flow, removed 11 redundant places. [2024-06-27 19:31:02,918 INFO L231 Difference]: Finished difference. Result has 349 places, 233 transitions, 1885 flow [2024-06-27 19:31:02,918 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1838, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=237, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=197, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1885, PETRI_PLACES=349, PETRI_TRANSITIONS=233} [2024-06-27 19:31:02,919 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 318 predicate places. [2024-06-27 19:31:02,919 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 233 transitions, 1885 flow [2024-06-27 19:31:02,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.3076923076923075) internal successors, (82), 13 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 19:31:02,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 19:31:02,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 19:31:02,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable194 [2024-06-27 19:31:02,920 INFO L420 AbstractCegarLoop]: === Iteration 196 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 19:31:02,920 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 19:31:02,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1893709207, now seen corresponding path program 1 times [2024-06-27 19:31:02,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 19:31:02,920 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1939492353] [2024-06-27 19:31:02,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 19:31:02,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 19:31:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Killed by 15