./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/pthread-wmm/rfi004.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/rfi004.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/rfi004.i ./goblint.2024-06-19_11-23-25.files/protection/rfi004.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 20:41:12,558 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-06-27 20:41:12,629 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-06-27 20:41:12,634 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-06-27 20:41:12,634 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-06-27 20:41:12,656 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-06-27 20:41:12,656 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-06-27 20:41:12,657 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-06-27 20:41:12,657 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-06-27 20:41:12,660 INFO L153 SettingsManager]: * Use memory slicer=true [2024-06-27 20:41:12,661 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-06-27 20:41:12,661 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-06-27 20:41:12,662 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-06-27 20:41:12,663 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-06-27 20:41:12,663 INFO L153 SettingsManager]: * Use SBE=true [2024-06-27 20:41:12,663 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-06-27 20:41:12,663 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-06-27 20:41:12,664 INFO L153 SettingsManager]: * sizeof long=4 [2024-06-27 20:41:12,664 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-06-27 20:41:12,664 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-06-27 20:41:12,664 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-06-27 20:41:12,677 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-06-27 20:41:12,678 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-06-27 20:41:12,678 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-06-27 20:41:12,678 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-06-27 20:41:12,678 INFO L153 SettingsManager]: * sizeof long double=12 [2024-06-27 20:41:12,679 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-06-27 20:41:12,679 INFO L153 SettingsManager]: * Use constant arrays=true [2024-06-27 20:41:12,679 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-06-27 20:41:12,680 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-06-27 20:41:12,680 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-06-27 20:41:12,681 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-06-27 20:41:12,681 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:41:12,681 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-06-27 20:41:12,681 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-06-27 20:41:12,681 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-06-27 20:41:12,682 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-06-27 20:41:12,682 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-06-27 20:41:12,682 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-06-27 20:41:12,682 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-06-27 20:41:12,682 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-06-27 20:41:12,683 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-06-27 20:41:12,683 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-06-27 20:41:12,683 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Check unreachability of reach_error function -> false [2024-06-27 20:41:12,887 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-06-27 20:41:12,903 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-06-27 20:41:12,906 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-06-27 20:41:12,907 INFO L270 PluginConnector]: Initializing CDTParser... [2024-06-27 20:41:12,907 INFO L274 PluginConnector]: CDTParser initialized [2024-06-27 20:41:12,908 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/rfi004.i [2024-06-27 20:41:13,926 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-06-27 20:41:14,154 INFO L384 CDTParser]: Found 1 translation units. [2024-06-27 20:41:14,154 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/rfi004.i [2024-06-27 20:41:14,173 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20207f932/1df4d68c85c54dca993065c87e194a0a/FLAG5461a2d0d [2024-06-27 20:41:14,183 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20207f932/1df4d68c85c54dca993065c87e194a0a [2024-06-27 20:41:14,185 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-06-27 20:41:14,185 INFO L274 PluginConnector]: Witness Parser initialized [2024-06-27 20:41:14,185 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2024-06-19_11-23-25.files/protection/rfi004.yml/witness.yml [2024-06-27 20:41:14,268 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-06-27 20:41:14,269 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-06-27 20:41:14,270 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-06-27 20:41:14,270 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-06-27 20:41:14,274 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-06-27 20:41:14,274 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:41:14" (1/2) ... [2024-06-27 20:41:14,275 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40dc6838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:41:14, skipping insertion in model container [2024-06-27 20:41:14,275 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.06 08:41:14" (1/2) ... [2024-06-27 20:41:14,276 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@53815add and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.06 08:41:14, skipping insertion in model container [2024-06-27 20:41:14,276 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:41:14" (2/2) ... [2024-06-27 20:41:14,277 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40dc6838 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:41:14, skipping insertion in model container [2024-06-27 20:41:14,277 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:41:14" (2/2) ... [2024-06-27 20:41:14,277 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-06-27 20:41:14,320 INFO L95 edCorrectnessWitness]: Found the following entries in the witness: [2024-06-27 20:41:14,321 INFO L97 edCorrectnessWitness]: Location invariant before [L818-L818] ((((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-27 20:41:14,321 INFO L97 edCorrectnessWitness]: Location invariant before [L819-L819] ((((((((((((((((! multithreaded || y$r_buff0_thd0 == (_Bool)0) && (! multithreaded || 0 <= __unbuffered_cnt)) && (! multithreaded || y$read_delayed == (_Bool)0)) && (! multithreaded || (y$w_buff0 == 0 || y$w_buff0 == 1))) && (! multithreaded || (y$w_buff1 == 0 || y$w_buff1 == 1))) && (! multithreaded || (__unbuffered_p1_EBX == 0 || __unbuffered_p1_EBX == 1))) && (! multithreaded || (y$mem_tmp == 0 || y$mem_tmp == 1))) && (! multithreaded || y$r_buff0_thd1 == (_Bool)0)) && (! multithreaded || y$r_buff1_thd0 == (_Bool)0)) && (! multithreaded || (y == 0 || y == 1))) && (! multithreaded || (x == 0 || x == 1))) && (! multithreaded || (__unbuffered_p0_EAX == 0 || __unbuffered_p0_EAX == 1))) && (! multithreaded || y$flush_delayed == (_Bool)0)) && (! multithreaded || y$r_buff1_thd1 == (_Bool)0)) && (! multithreaded || y$read_delayed_var == 0)) && (! multithreaded || (__unbuffered_p1_EAX == 0 || __unbuffered_p1_EAX == 1))) && (! multithreaded || (z == 0 || z == 1)) [2024-06-27 20:41:14,321 INFO L103 edCorrectnessWitness]: ghost_variable multithreaded = 0 [2024-06-27 20:41:14,322 INFO L106 edCorrectnessWitness]: ghost_update [L816-L816] multithreaded = 1; [2024-06-27 20:41:14,364 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-06-27 20:41:14,617 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:41:14,629 INFO L202 MainTranslator]: Completed pre-run Start Parsing Local Start Parsing Local Start Parsing Local Start Parsing Local [2024-06-27 20:41:14,722 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-06-27 20:41:14,752 INFO L206 MainTranslator]: Completed translation [2024-06-27 20:41:14,752 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 27.06 08:41:14 WrapperNode [2024-06-27 20:41:14,752 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-06-27 20:41:14,753 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-06-27 20:41:14,753 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-06-27 20:41:14,753 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-06-27 20:41:14,758 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 08:41:14" (1/1) ... [2024-06-27 20:41:14,769 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 08:41:14" (1/1) ... [2024-06-27 20:41:14,789 INFO L138 Inliner]: procedures = 174, calls = 40, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 121 [2024-06-27 20:41:14,794 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-06-27 20:41:14,794 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-06-27 20:41:14,794 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-06-27 20:41:14,795 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-06-27 20:41:14,803 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 08:41:14" (1/1) ... [2024-06-27 20:41:14,803 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 08:41:14" (1/1) ... [2024-06-27 20:41:14,805 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 08:41:14" (1/1) ... [2024-06-27 20:41:14,817 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 20:41:14,817 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 08:41:14" (1/1) ... [2024-06-27 20:41:14,818 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 08:41:14" (1/1) ... [2024-06-27 20:41:14,827 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 08:41:14" (1/1) ... [2024-06-27 20:41:14,829 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 08:41:14" (1/1) ... [2024-06-27 20:41:14,830 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 08:41:14" (1/1) ... [2024-06-27 20:41:14,831 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 08:41:14" (1/1) ... [2024-06-27 20:41:14,833 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-06-27 20:41:14,834 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-06-27 20:41:14,836 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-06-27 20:41:14,836 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-06-27 20:41:14,837 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 08:41:14" (1/1) ... [2024-06-27 20:41:14,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-06-27 20:41:14,853 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-06-27 20:41:14,866 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 20:41:14,873 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 20:41:14,901 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-06-27 20:41:14,901 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-06-27 20:41:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2024-06-27 20:41:14,902 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2024-06-27 20:41:14,902 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2024-06-27 20:41:14,903 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2024-06-27 20:41:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-06-27 20:41:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-06-27 20:41:14,903 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-06-27 20:41:14,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-06-27 20:41:14,904 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 20:41:15,022 INFO L244 CfgBuilder]: Building ICFG [2024-06-27 20:41:15,024 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-06-27 20:41:15,263 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-06-27 20:41:15,263 INFO L293 CfgBuilder]: Performing block encoding [2024-06-27 20:41:15,387 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-06-27 20:41:15,390 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-06-27 20:41:15,392 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:41:15 BoogieIcfgContainer [2024-06-27 20:41:15,393 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-06-27 20:41:15,394 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-06-27 20:41:15,394 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-06-27 20:41:15,396 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-06-27 20:41:15,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.06 08:41:14" (1/4) ... [2024-06-27 20:41:15,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5945172 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.06 08:41:15, skipping insertion in model container [2024-06-27 20:41:15,397 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 27.06 08:41:14" (2/4) ... [2024-06-27 20:41:15,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5945172 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:41:15, skipping insertion in model container [2024-06-27 20:41:15,397 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 08:41:14" (3/4) ... [2024-06-27 20:41:15,397 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5945172 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 27.06 08:41:15, skipping insertion in model container [2024-06-27 20:41:15,398 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.06 08:41:15" (4/4) ... [2024-06-27 20:41:15,398 INFO L112 eAbstractionObserver]: Analyzing ICFG rfi004.i [2024-06-27 20:41:15,412 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-06-27 20:41:15,412 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-06-27 20:41:15,412 INFO L522 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-06-27 20:41:15,486 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-06-27 20:41:15,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 32 transitions, 72 flow [2024-06-27 20:41:15,550 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2024-06-27 20:41:15,551 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:41:15,554 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 20:41:15,554 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 32 transitions, 72 flow [2024-06-27 20:41:15,558 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 24 transitions, 54 flow [2024-06-27 20:41:15,572 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-06-27 20:41:15,577 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;@c1a7443, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-06-27 20:41:15,577 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-06-27 20:41:15,580 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-06-27 20:41:15,580 INFO L124 PetriNetUnfolderBase]: 0/5 cut-off events. [2024-06-27 20:41:15,580 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-06-27 20:41:15,581 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:15,581 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2024-06-27 20:41:15,582 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 20:41:15,585 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:15,586 INFO L85 PathProgramCache]: Analyzing trace with hash 329103778, now seen corresponding path program 1 times [2024-06-27 20:41:15,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:15,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1025833310] [2024-06-27 20:41:15,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:15,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:15,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:16,316 INFO 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 20:41:16,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:16,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1025833310] [2024-06-27 20:41:16,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1025833310] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:16,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:16,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-06-27 20:41:16,319 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115396694] [2024-06-27 20:41:16,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:16,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-06-27 20:41:16,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:16,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-06-27 20:41:16,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-06-27 20:41:16,382 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 32 [2024-06-27 20:41:16,384 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 24 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:16,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:16,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 32 [2024-06-27 20:41:16,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:16,492 INFO L124 PetriNetUnfolderBase]: 131/269 cut-off events. [2024-06-27 20:41:16,492 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-06-27 20:41:16,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 525 conditions, 269 events. 131/269 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1071 event pairs, 75 based on Foata normal form. 1/257 useless extension candidates. Maximal degree in co-relation 514. Up to 235 conditions per place. [2024-06-27 20:41:16,497 INFO L140 encePairwiseOnDemand]: 27/32 looper letters, 20 selfloop transitions, 3 changer transitions 0/30 dead transitions. [2024-06-27 20:41:16,498 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 30 transitions, 115 flow [2024-06-27 20:41:16,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-06-27 20:41:16,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-06-27 20:41:16,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 61 transitions. [2024-06-27 20:41:16,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6354166666666666 [2024-06-27 20:41:16,509 INFO L175 Difference]: Start difference. First operand has 31 places, 24 transitions, 54 flow. Second operand 3 states and 61 transitions. [2024-06-27 20:41:16,509 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 30 transitions, 115 flow [2024-06-27 20:41:16,512 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 30 transitions, 112 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-06-27 20:41:16,513 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 73 flow [2024-06-27 20:41:16,514 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 20:41:16,517 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-06-27 20:41:16,517 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 73 flow [2024-06-27 20:41:16,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:16,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:16,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:16,518 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-06-27 20:41:16,518 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 20:41:16,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:16,518 INFO L85 PathProgramCache]: Analyzing trace with hash -1558109713, now seen corresponding path program 1 times [2024-06-27 20:41:16,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:16,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342978580] [2024-06-27 20:41:16,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:16,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:16,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:16,903 INFO 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 20:41:16,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:16,903 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342978580] [2024-06-27 20:41:16,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342978580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:16,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:16,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-06-27 20:41:16,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415426941] [2024-06-27 20:41:16,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:16,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-06-27 20:41:16,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:16,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-06-27 20:41:16,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-06-27 20:41:16,928 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-27 20:41:16,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 73 flow. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:16,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:16,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-27 20:41:16,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:17,048 INFO L124 PetriNetUnfolderBase]: 147/286 cut-off events. [2024-06-27 20:41:17,048 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-06-27 20:41:17,050 INFO L83 FinitePrefix]: Finished finitePrefix Result has 646 conditions, 286 events. 147/286 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1095 event pairs, 59 based on Foata normal form. 4/286 useless extension candidates. Maximal degree in co-relation 634. Up to 244 conditions per place. [2024-06-27 20:41:17,053 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 26 selfloop transitions, 5 changer transitions 0/37 dead transitions. [2024-06-27 20:41:17,053 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 37 transitions, 163 flow [2024-06-27 20:41:17,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-06-27 20:41:17,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-06-27 20:41:17,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 77 transitions. [2024-06-27 20:41:17,056 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6015625 [2024-06-27 20:41:17,056 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 73 flow. Second operand 4 states and 77 transitions. [2024-06-27 20:41:17,056 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 37 transitions, 163 flow [2024-06-27 20:41:17,057 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 37 transitions, 160 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-06-27 20:41:17,059 INFO L231 Difference]: Finished difference. Result has 35 places, 28 transitions, 97 flow [2024-06-27 20:41:17,059 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 20:41:17,059 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 4 predicate places. [2024-06-27 20:41:17,060 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 28 transitions, 97 flow [2024-06-27 20:41:17,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:17,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:17,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:17,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-06-27 20:41:17,061 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:17,061 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:17,063 INFO L85 PathProgramCache]: Analyzing trace with hash -2147284969, now seen corresponding path program 1 times [2024-06-27 20:41:17,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:17,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318526534] [2024-06-27 20:41:17,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:17,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:17,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:17,558 INFO 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 20:41:17,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:17,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318526534] [2024-06-27 20:41:17,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318526534] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:17,559 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:17,559 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:41:17,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314126530] [2024-06-27 20:41:17,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:17,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:41:17,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:17,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:41:17,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:41:17,617 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 32 [2024-06-27 20:41:17,618 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 28 transitions, 97 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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 20:41:17,618 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:17,618 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 32 [2024-06-27 20:41:17,618 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:17,725 INFO L124 PetriNetUnfolderBase]: 123/252 cut-off events. [2024-06-27 20:41:17,726 INFO L125 PetriNetUnfolderBase]: For 144/144 co-relation queries the response was YES. [2024-06-27 20:41:17,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 632 conditions, 252 events. 123/252 cut-off events. For 144/144 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 970 event pairs, 62 based on Foata normal form. 1/247 useless extension candidates. Maximal degree in co-relation 617. Up to 219 conditions per place. [2024-06-27 20:41:17,727 INFO L140 encePairwiseOnDemand]: 26/32 looper letters, 23 selfloop transitions, 6 changer transitions 0/35 dead transitions. [2024-06-27 20:41:17,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 35 transitions, 173 flow [2024-06-27 20:41:17,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-06-27 20:41:17,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-06-27 20:41:17,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 78 transitions. [2024-06-27 20:41:17,728 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4875 [2024-06-27 20:41:17,729 INFO L175 Difference]: Start difference. First operand has 35 places, 28 transitions, 97 flow. Second operand 5 states and 78 transitions. [2024-06-27 20:41:17,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 35 transitions, 173 flow [2024-06-27 20:41:17,729 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 35 transitions, 164 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-06-27 20:41:17,730 INFO L231 Difference]: Finished difference. Result has 38 places, 30 transitions, 115 flow [2024-06-27 20:41:17,730 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=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=38, PETRI_TRANSITIONS=30} [2024-06-27 20:41:17,731 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 7 predicate places. [2024-06-27 20:41:17,731 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 30 transitions, 115 flow [2024-06-27 20:41:17,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 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 20:41:17,731 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:17,731 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:17,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-06-27 20:41:17,731 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:17,732 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:17,732 INFO L85 PathProgramCache]: Analyzing trace with hash 260036671, now seen corresponding path program 1 times [2024-06-27 20:41:17,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:17,732 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111674314] [2024-06-27 20:41:17,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:17,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:17,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:18,635 INFO 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 20:41:18,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:18,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111674314] [2024-06-27 20:41:18,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111674314] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:18,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:18,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-06-27 20:41:18,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [137822937] [2024-06-27 20:41:18,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:18,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-06-27 20:41:18,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:18,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-06-27 20:41:18,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-06-27 20:41:18,718 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 32 [2024-06-27 20:41:18,719 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 30 transitions, 115 flow. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:18,719 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:18,719 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 32 [2024-06-27 20:41:18,719 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:18,861 INFO L124 PetriNetUnfolderBase]: 141/279 cut-off events. [2024-06-27 20:41:18,863 INFO L125 PetriNetUnfolderBase]: For 261/261 co-relation queries the response was YES. [2024-06-27 20:41:18,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 749 conditions, 279 events. 141/279 cut-off events. For 261/261 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1078 event pairs, 24 based on Foata normal form. 4/282 useless extension candidates. Maximal degree in co-relation 733. Up to 215 conditions per place. [2024-06-27 20:41:18,864 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 31 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-27 20:41:18,864 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 45 transitions, 227 flow [2024-06-27 20:41:18,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:41:18,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:41:18,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-06-27 20:41:18,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.546875 [2024-06-27 20:41:18,891 INFO L175 Difference]: Start difference. First operand has 38 places, 30 transitions, 115 flow. Second operand 6 states and 105 transitions. [2024-06-27 20:41:18,891 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 45 transitions, 227 flow [2024-06-27 20:41:18,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 45 transitions, 216 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-06-27 20:41:18,893 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 129 flow [2024-06-27 20:41:18,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=129, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2024-06-27 20:41:18,893 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 10 predicate places. [2024-06-27 20:41:18,893 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 129 flow [2024-06-27 20:41:18,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:18,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:18,894 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:18,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-06-27 20:41:18,894 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:41:18,894 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:18,895 INFO L85 PathProgramCache]: Analyzing trace with hash -2141323674, now seen corresponding path program 1 times [2024-06-27 20:41:18,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:18,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [538656441] [2024-06-27 20:41:18,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:18,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:18,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:19,380 INFO 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 20:41:19,381 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:19,381 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [538656441] [2024-06-27 20:41:19,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [538656441] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:19,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:19,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:41:19,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608157183] [2024-06-27 20:41:19,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:19,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:41:19,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:19,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:41:19,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:41:19,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 20:41:19,438 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 129 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:19,438 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:19,438 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 20:41:19,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:19,540 INFO L124 PetriNetUnfolderBase]: 139/280 cut-off events. [2024-06-27 20:41:19,540 INFO L125 PetriNetUnfolderBase]: For 419/419 co-relation queries the response was YES. [2024-06-27 20:41:19,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 280 events. 139/280 cut-off events. For 419/419 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1078 event pairs, 41 based on Foata normal form. 1/280 useless extension candidates. Maximal degree in co-relation 797. Up to 242 conditions per place. [2024-06-27 20:41:19,543 INFO L140 encePairwiseOnDemand]: 25/32 looper letters, 26 selfloop transitions, 8 changer transitions 0/39 dead transitions. [2024-06-27 20:41:19,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 39 transitions, 219 flow [2024-06-27 20:41:19,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:41:19,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:41:19,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 85 transitions. [2024-06-27 20:41:19,545 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4427083333333333 [2024-06-27 20:41:19,545 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 129 flow. Second operand 6 states and 85 transitions. [2024-06-27 20:41:19,546 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 39 transitions, 219 flow [2024-06-27 20:41:19,548 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 39 transitions, 203 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-06-27 20:41:19,550 INFO L231 Difference]: Finished difference. Result has 44 places, 33 transitions, 146 flow [2024-06-27 20:41:19,550 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=113, 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=146, PETRI_PLACES=44, PETRI_TRANSITIONS=33} [2024-06-27 20:41:19,554 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 13 predicate places. [2024-06-27 20:41:19,554 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 33 transitions, 146 flow [2024-06-27 20:41:19,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:19,554 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:19,554 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:19,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-06-27 20:41:19,556 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 20:41:19,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:19,556 INFO L85 PathProgramCache]: Analyzing trace with hash -1019246806, now seen corresponding path program 1 times [2024-06-27 20:41:19,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:19,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933653626] [2024-06-27 20:41:19,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:19,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:19,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:20,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:20,000 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:20,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933653626] [2024-06-27 20:41:20,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933653626] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:20,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:20,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:41:20,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800213628] [2024-06-27 20:41:20,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:20,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:41:20,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:20,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:41:20,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:41:20,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 20:41:20,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 33 transitions, 146 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:20,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:20,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 20:41:20,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:20,215 INFO L124 PetriNetUnfolderBase]: 156/306 cut-off events. [2024-06-27 20:41:20,215 INFO L125 PetriNetUnfolderBase]: For 680/680 co-relation queries the response was YES. [2024-06-27 20:41:20,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 957 conditions, 306 events. 156/306 cut-off events. For 680/680 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1198 event pairs, 46 based on Foata normal form. 2/307 useless extension candidates. Maximal degree in co-relation 937. Up to 255 conditions per place. [2024-06-27 20:41:20,218 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 31 selfloop transitions, 8 changer transitions 0/45 dead transitions. [2024-06-27 20:41:20,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 45 transitions, 258 flow [2024-06-27 20:41:20,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:41:20,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:41:20,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-27 20:41:20,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2024-06-27 20:41:20,219 INFO L175 Difference]: Start difference. First operand has 44 places, 33 transitions, 146 flow. Second operand 6 states and 89 transitions. [2024-06-27 20:41:20,220 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 45 transitions, 258 flow [2024-06-27 20:41:20,221 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 45 transitions, 241 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 20:41:20,222 INFO L231 Difference]: Finished difference. Result has 46 places, 35 transitions, 162 flow [2024-06-27 20:41:20,222 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=129, 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=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=162, PETRI_PLACES=46, PETRI_TRANSITIONS=35} [2024-06-27 20:41:20,222 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 15 predicate places. [2024-06-27 20:41:20,223 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 35 transitions, 162 flow [2024-06-27 20:41:20,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:20,223 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:20,223 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:20,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-06-27 20:41:20,223 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 20:41:20,223 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:20,223 INFO L85 PathProgramCache]: Analyzing trace with hash -1956532426, now seen corresponding path program 2 times [2024-06-27 20:41:20,223 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:20,223 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220558056] [2024-06-27 20:41:20,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:20,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:20,613 INFO 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 20:41:20,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:20,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220558056] [2024-06-27 20:41:20,613 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220558056] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:20,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:20,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-06-27 20:41:20,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1795288554] [2024-06-27 20:41:20,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:20,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-06-27 20:41:20,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:20,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-06-27 20:41:20,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-06-27 20:41:20,656 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 20:41:20,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 35 transitions, 162 flow. Second operand has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:20,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:20,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 20:41:20,657 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:20,835 INFO L124 PetriNetUnfolderBase]: 155/305 cut-off events. [2024-06-27 20:41:20,835 INFO L125 PetriNetUnfolderBase]: For 921/921 co-relation queries the response was YES. [2024-06-27 20:41:20,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1027 conditions, 305 events. 155/305 cut-off events. For 921/921 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1227 event pairs, 49 based on Foata normal form. 2/304 useless extension candidates. Maximal degree in co-relation 1006. Up to 246 conditions per place. [2024-06-27 20:41:20,837 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 28 selfloop transitions, 11 changer transitions 0/45 dead transitions. [2024-06-27 20:41:20,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 45 transitions, 274 flow [2024-06-27 20:41:20,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-06-27 20:41:20,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-06-27 20:41:20,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 89 transitions. [2024-06-27 20:41:20,839 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4635416666666667 [2024-06-27 20:41:20,839 INFO L175 Difference]: Start difference. First operand has 46 places, 35 transitions, 162 flow. Second operand 6 states and 89 transitions. [2024-06-27 20:41:20,839 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 45 transitions, 274 flow [2024-06-27 20:41:20,841 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 45 transitions, 257 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-06-27 20:41:20,842 INFO L231 Difference]: Finished difference. Result has 48 places, 37 transitions, 188 flow [2024-06-27 20:41:20,842 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=188, PETRI_PLACES=48, PETRI_TRANSITIONS=37} [2024-06-27 20:41:20,843 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 17 predicate places. [2024-06-27 20:41:20,843 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 37 transitions, 188 flow [2024-06-27 20:41:20,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.428571428571429) internal successors, (73), 7 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:20,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:20,844 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:20,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-06-27 20:41:20,844 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 20:41:20,845 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:20,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1956523498, now seen corresponding path program 1 times [2024-06-27 20:41:20,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:20,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1486078461] [2024-06-27 20:41:20,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:20,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:21,381 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 20:41:21,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:21,382 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1486078461] [2024-06-27 20:41:21,382 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1486078461] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:21,382 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:21,382 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:41:21,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202650690] [2024-06-27 20:41:21,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:21,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:41:21,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:21,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:41:21,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:41:21,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 20:41:21,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 37 transitions, 188 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:21,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:21,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 20:41:21,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:21,562 INFO L124 PetriNetUnfolderBase]: 144/291 cut-off events. [2024-06-27 20:41:21,562 INFO L125 PetriNetUnfolderBase]: For 916/916 co-relation queries the response was YES. [2024-06-27 20:41:21,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1012 conditions, 291 events. 144/291 cut-off events. For 916/916 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1147 event pairs, 39 based on Foata normal form. 1/291 useless extension candidates. Maximal degree in co-relation 990. Up to 248 conditions per place. [2024-06-27 20:41:21,564 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 31 selfloop transitions, 10 changer transitions 0/46 dead transitions. [2024-06-27 20:41:21,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 46 transitions, 296 flow [2024-06-27 20:41:21,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:41:21,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:41:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-27 20:41:21,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330357142857143 [2024-06-27 20:41:21,565 INFO L175 Difference]: Start difference. First operand has 48 places, 37 transitions, 188 flow. Second operand 7 states and 97 transitions. [2024-06-27 20:41:21,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 46 transitions, 296 flow [2024-06-27 20:41:21,566 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 46 transitions, 269 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-06-27 20:41:21,567 INFO L231 Difference]: Finished difference. Result has 51 places, 39 transitions, 200 flow [2024-06-27 20:41:21,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=200, PETRI_PLACES=51, PETRI_TRANSITIONS=39} [2024-06-27 20:41:21,567 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 20 predicate places. [2024-06-27 20:41:21,568 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 39 transitions, 200 flow [2024-06-27 20:41:21,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:21,568 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:21,568 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:21,568 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-06-27 20:41:21,568 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 20:41:21,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:21,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1531878989, now seen corresponding path program 1 times [2024-06-27 20:41:21,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:21,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079487182] [2024-06-27 20:41:21,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:21,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:21,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:21,978 INFO 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 20:41:21,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:21,979 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079487182] [2024-06-27 20:41:21,979 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1079487182] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:21,979 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:21,979 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:41:21,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112590707] [2024-06-27 20:41:21,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:21,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:41:21,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:21,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:41:21,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:41:22,027 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:22,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 39 transitions, 200 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 20:41:22,027 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:22,027 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:22,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:22,201 INFO L124 PetriNetUnfolderBase]: 170/325 cut-off events. [2024-06-27 20:41:22,201 INFO L125 PetriNetUnfolderBase]: For 1295/1295 co-relation queries the response was YES. [2024-06-27 20:41:22,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1192 conditions, 325 events. 170/325 cut-off events. For 1295/1295 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1279 event pairs, 45 based on Foata normal form. 2/326 useless extension candidates. Maximal degree in co-relation 1169. Up to 278 conditions per place. [2024-06-27 20:41:22,203 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 39 selfloop transitions, 10 changer transitions 0/53 dead transitions. [2024-06-27 20:41:22,204 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 53 transitions, 342 flow [2024-06-27 20:41:22,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:41:22,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:41:22,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-06-27 20:41:22,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42857142857142855 [2024-06-27 20:41:22,205 INFO L175 Difference]: Start difference. First operand has 51 places, 39 transitions, 200 flow. Second operand 7 states and 96 transitions. [2024-06-27 20:41:22,205 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 53 transitions, 342 flow [2024-06-27 20:41:22,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 53 transitions, 319 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:22,208 INFO L231 Difference]: Finished difference. Result has 53 places, 41 transitions, 218 flow [2024-06-27 20:41:22,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=177, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=218, PETRI_PLACES=53, PETRI_TRANSITIONS=41} [2024-06-27 20:41:22,209 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 22 predicate places. [2024-06-27 20:41:22,209 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 41 transitions, 218 flow [2024-06-27 20:41:22,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 20:41:22,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:22,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:22,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-06-27 20:41:22,210 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 20:41:22,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:22,210 INFO L85 PathProgramCache]: Analyzing trace with hash -522962137, now seen corresponding path program 2 times [2024-06-27 20:41:22,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:22,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939731635] [2024-06-27 20:41:22,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:22,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:22,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:22,696 INFO 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 20:41:22,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:22,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939731635] [2024-06-27 20:41:22,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939731635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:22,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:22,697 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:41:22,697 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1075365943] [2024-06-27 20:41:22,697 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:22,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:41:22,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:22,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:41:22,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:41:22,747 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:22,747 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 41 transitions, 218 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 20:41:22,747 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:22,747 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:22,747 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:22,896 INFO L124 PetriNetUnfolderBase]: 181/346 cut-off events. [2024-06-27 20:41:22,896 INFO L125 PetriNetUnfolderBase]: For 1714/1714 co-relation queries the response was YES. [2024-06-27 20:41:22,897 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1341 conditions, 346 events. 181/346 cut-off events. For 1714/1714 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1427 event pairs, 52 based on Foata normal form. 2/345 useless extension candidates. Maximal degree in co-relation 1317. Up to 267 conditions per place. [2024-06-27 20:41:22,898 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 35 selfloop transitions, 17 changer transitions 0/56 dead transitions. [2024-06-27 20:41:22,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 56 transitions, 402 flow [2024-06-27 20:41:22,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:41:22,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:41:22,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-06-27 20:41:22,900 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4419642857142857 [2024-06-27 20:41:22,900 INFO L175 Difference]: Start difference. First operand has 53 places, 41 transitions, 218 flow. Second operand 7 states and 99 transitions. [2024-06-27 20:41:22,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 56 transitions, 402 flow [2024-06-27 20:41:22,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 56 transitions, 377 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:22,904 INFO L231 Difference]: Finished difference. Result has 55 places, 45 transitions, 268 flow [2024-06-27 20:41:22,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=193, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=268, PETRI_PLACES=55, PETRI_TRANSITIONS=45} [2024-06-27 20:41:22,906 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 24 predicate places. [2024-06-27 20:41:22,907 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 45 transitions, 268 flow [2024-06-27 20:41:22,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 20:41:22,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:22,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:22,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-06-27 20:41:22,908 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 20:41:22,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:22,909 INFO L85 PathProgramCache]: Analyzing trace with hash -522695227, now seen corresponding path program 3 times [2024-06-27 20:41:22,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:22,909 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136528771] [2024-06-27 20:41:22,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:22,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:23,435 INFO 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 20:41:23,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:23,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136528771] [2024-06-27 20:41:23,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136528771] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:23,436 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:23,436 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:41:23,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820703658] [2024-06-27 20:41:23,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:23,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:41:23,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:23,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:41:23,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:41:23,489 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:23,490 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 45 transitions, 268 flow. Second operand has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 20:41:23,490 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:23,490 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:23,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:23,627 INFO L124 PetriNetUnfolderBase]: 177/338 cut-off events. [2024-06-27 20:41:23,628 INFO L125 PetriNetUnfolderBase]: For 2011/2011 co-relation queries the response was YES. [2024-06-27 20:41:23,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1375 conditions, 338 events. 177/338 cut-off events. For 2011/2011 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1384 event pairs, 49 based on Foata normal form. 2/337 useless extension candidates. Maximal degree in co-relation 1350. Up to 264 conditions per place. [2024-06-27 20:41:23,630 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 33 selfloop transitions, 18 changer transitions 0/55 dead transitions. [2024-06-27 20:41:23,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 55 transitions, 398 flow [2024-06-27 20:41:23,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:41:23,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:41:23,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-06-27 20:41:23,631 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4330357142857143 [2024-06-27 20:41:23,631 INFO L175 Difference]: Start difference. First operand has 55 places, 45 transitions, 268 flow. Second operand 7 states and 97 transitions. [2024-06-27 20:41:23,631 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 55 transitions, 398 flow [2024-06-27 20:41:23,633 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 55 transitions, 362 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-06-27 20:41:23,634 INFO L231 Difference]: Finished difference. Result has 59 places, 45 transitions, 273 flow [2024-06-27 20:41:23,634 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=273, PETRI_PLACES=59, PETRI_TRANSITIONS=45} [2024-06-27 20:41:23,634 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 28 predicate places. [2024-06-27 20:41:23,634 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 45 transitions, 273 flow [2024-06-27 20:41:23,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.375) internal successors, (75), 8 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 20:41:23,635 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:23,635 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:23,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-06-27 20:41:23,635 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 20:41:23,635 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:23,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1951572715, now seen corresponding path program 1 times [2024-06-27 20:41:23,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:23,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283005300] [2024-06-27 20:41:23,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:23,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:23,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:24,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:24,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:24,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283005300] [2024-06-27 20:41:24,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283005300] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:24,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:24,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:41:24,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524017550] [2024-06-27 20:41:24,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:24,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:41:24,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:24,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:41:24,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:41:24,295 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 20:41:24,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 45 transitions, 273 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:24,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:24,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 20:41:24,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:24,511 INFO L124 PetriNetUnfolderBase]: 180/360 cut-off events. [2024-06-27 20:41:24,511 INFO L125 PetriNetUnfolderBase]: For 2347/2347 co-relation queries the response was YES. [2024-06-27 20:41:24,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 360 events. 180/360 cut-off events. For 2347/2347 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1547 event pairs, 46 based on Foata normal form. 1/360 useless extension candidates. Maximal degree in co-relation 1461. Up to 276 conditions per place. [2024-06-27 20:41:24,514 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 41 selfloop transitions, 16 changer transitions 0/66 dead transitions. [2024-06-27 20:41:24,514 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 66 transitions, 478 flow [2024-06-27 20:41:24,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:24,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:24,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 116 transitions. [2024-06-27 20:41:24,515 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.453125 [2024-06-27 20:41:24,515 INFO L175 Difference]: Start difference. First operand has 59 places, 45 transitions, 273 flow. Second operand 8 states and 116 transitions. [2024-06-27 20:41:24,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 66 transitions, 478 flow [2024-06-27 20:41:24,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 66 transitions, 433 flow, removed 1 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:24,518 INFO L231 Difference]: Finished difference. Result has 63 places, 54 transitions, 342 flow [2024-06-27 20:41:24,518 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=232, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=342, PETRI_PLACES=63, PETRI_TRANSITIONS=54} [2024-06-27 20:41:24,519 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 32 predicate places. [2024-06-27 20:41:24,519 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 54 transitions, 342 flow [2024-06-27 20:41:24,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:24,519 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:24,519 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:24,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-06-27 20:41:24,519 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 20:41:24,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:24,520 INFO L85 PathProgramCache]: Analyzing trace with hash -768830461, now seen corresponding path program 2 times [2024-06-27 20:41:24,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:24,520 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219422929] [2024-06-27 20:41:24,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:24,520 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:24,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:25,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:25,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:25,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219422929] [2024-06-27 20:41:25,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219422929] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:25,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:25,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-06-27 20:41:25,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273551111] [2024-06-27 20:41:25,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:25,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-06-27 20:41:25,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:25,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-06-27 20:41:25,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-06-27 20:41:25,209 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 20:41:25,209 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 54 transitions, 342 flow. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:25,209 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:25,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 20:41:25,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:25,406 INFO L124 PetriNetUnfolderBase]: 178/357 cut-off events. [2024-06-27 20:41:25,407 INFO L125 PetriNetUnfolderBase]: For 2704/2704 co-relation queries the response was YES. [2024-06-27 20:41:25,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1540 conditions, 357 events. 178/357 cut-off events. For 2704/2704 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1530 event pairs, 45 based on Foata normal form. 1/357 useless extension candidates. Maximal degree in co-relation 1510. Up to 268 conditions per place. [2024-06-27 20:41:25,409 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 41 selfloop transitions, 18 changer transitions 0/68 dead transitions. [2024-06-27 20:41:25,409 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 68 transitions, 520 flow [2024-06-27 20:41:25,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-06-27 20:41:25,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-06-27 20:41:25,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 103 transitions. [2024-06-27 20:41:25,410 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45982142857142855 [2024-06-27 20:41:25,410 INFO L175 Difference]: Start difference. First operand has 63 places, 54 transitions, 342 flow. Second operand 7 states and 103 transitions. [2024-06-27 20:41:25,410 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 68 transitions, 520 flow [2024-06-27 20:41:25,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 68 transitions, 488 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-06-27 20:41:25,413 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 383 flow [2024-06-27 20:41:25,414 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=383, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2024-06-27 20:41:25,414 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 36 predicate places. [2024-06-27 20:41:25,414 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 383 flow [2024-06-27 20:41:25,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:25,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:25,415 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:25,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-06-27 20:41:25,415 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 20:41:25,415 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:25,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1143245451, now seen corresponding path program 1 times [2024-06-27 20:41:25,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:25,416 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1789148764] [2024-06-27 20:41:25,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:25,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:25,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:25,935 INFO 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 20:41:25,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:25,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1789148764] [2024-06-27 20:41:25,936 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1789148764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:25,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:25,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:25,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034170226] [2024-06-27 20:41:25,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:25,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:25,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:25,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:25,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:26,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:26,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 383 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:26,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:26,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:26,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:26,186 INFO L124 PetriNetUnfolderBase]: 196/381 cut-off events. [2024-06-27 20:41:26,186 INFO L125 PetriNetUnfolderBase]: For 3203/3203 co-relation queries the response was YES. [2024-06-27 20:41:26,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1693 conditions, 381 events. 196/381 cut-off events. For 3203/3203 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1615 event pairs, 45 based on Foata normal form. 2/382 useless extension candidates. Maximal degree in co-relation 1662. Up to 311 conditions per place. [2024-06-27 20:41:26,189 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 54 selfloop transitions, 14 changer transitions 0/72 dead transitions. [2024-06-27 20:41:26,189 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 72 transitions, 581 flow [2024-06-27 20:41:26,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:26,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:26,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-27 20:41:26,190 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 20:41:26,190 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 383 flow. Second operand 8 states and 108 transitions. [2024-06-27 20:41:26,190 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 72 transitions, 581 flow [2024-06-27 20:41:26,195 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 72 transitions, 528 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:26,196 INFO L231 Difference]: Finished difference. Result has 70 places, 58 transitions, 385 flow [2024-06-27 20:41:26,196 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=385, PETRI_PLACES=70, PETRI_TRANSITIONS=58} [2024-06-27 20:41:26,197 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 39 predicate places. [2024-06-27 20:41:26,197 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 58 transitions, 385 flow [2024-06-27 20:41:26,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:26,197 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:26,197 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:26,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-06-27 20:41:26,198 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 20:41:26,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:26,198 INFO L85 PathProgramCache]: Analyzing trace with hash 976614773, now seen corresponding path program 2 times [2024-06-27 20:41:26,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:26,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1827392288] [2024-06-27 20:41:26,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:26,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:26,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:26,753 INFO 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 20:41:26,753 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:26,753 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1827392288] [2024-06-27 20:41:26,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1827392288] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:26,753 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:26,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:26,753 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278620406] [2024-06-27 20:41:26,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:26,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:26,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:26,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:26,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:26,808 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:26,809 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 58 transitions, 385 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:26,809 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:26,809 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:26,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:26,979 INFO L124 PetriNetUnfolderBase]: 207/399 cut-off events. [2024-06-27 20:41:26,979 INFO L125 PetriNetUnfolderBase]: For 3408/3408 co-relation queries the response was YES. [2024-06-27 20:41:26,980 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1782 conditions, 399 events. 207/399 cut-off events. For 3408/3408 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1718 event pairs, 46 based on Foata normal form. 2/397 useless extension candidates. Maximal degree in co-relation 1750. Up to 279 conditions per place. [2024-06-27 20:41:26,982 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 47 selfloop transitions, 26 changer transitions 0/77 dead transitions. [2024-06-27 20:41:26,982 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 77 transitions, 645 flow [2024-06-27 20:41:26,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:26,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:26,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 111 transitions. [2024-06-27 20:41:26,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43359375 [2024-06-27 20:41:26,983 INFO L175 Difference]: Start difference. First operand has 70 places, 58 transitions, 385 flow. Second operand 8 states and 111 transitions. [2024-06-27 20:41:26,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 77 transitions, 645 flow [2024-06-27 20:41:26,986 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 77 transitions, 608 flow, removed 6 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:26,987 INFO L231 Difference]: Finished difference. Result has 73 places, 63 transitions, 464 flow [2024-06-27 20:41:26,988 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=348, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=464, PETRI_PLACES=73, PETRI_TRANSITIONS=63} [2024-06-27 20:41:26,989 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 42 predicate places. [2024-06-27 20:41:26,989 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 63 transitions, 464 flow [2024-06-27 20:41:26,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:26,989 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:26,989 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:26,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-06-27 20:41:26,990 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 20:41:26,990 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:26,990 INFO L85 PathProgramCache]: Analyzing trace with hash 976318103, now seen corresponding path program 3 times [2024-06-27 20:41:26,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:26,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121421445] [2024-06-27 20:41:26,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:26,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:26,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:27,519 INFO 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 20:41:27,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:27,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121421445] [2024-06-27 20:41:27,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121421445] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:27,523 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:27,523 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:27,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725396651] [2024-06-27 20:41:27,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:27,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:27,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:27,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:27,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:27,576 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:27,576 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 63 transitions, 464 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:27,576 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:27,576 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:27,576 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:27,724 INFO L124 PetriNetUnfolderBase]: 213/409 cut-off events. [2024-06-27 20:41:27,725 INFO L125 PetriNetUnfolderBase]: For 3976/3976 co-relation queries the response was YES. [2024-06-27 20:41:27,726 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1947 conditions, 409 events. 213/409 cut-off events. For 3976/3976 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1758 event pairs, 46 based on Foata normal form. 2/407 useless extension candidates. Maximal degree in co-relation 1913. Up to 285 conditions per place. [2024-06-27 20:41:27,728 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 49 selfloop transitions, 26 changer transitions 0/79 dead transitions. [2024-06-27 20:41:27,729 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 79 transitions, 712 flow [2024-06-27 20:41:27,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:27,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:27,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-27 20:41:27,730 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 20:41:27,730 INFO L175 Difference]: Start difference. First operand has 73 places, 63 transitions, 464 flow. Second operand 8 states and 112 transitions. [2024-06-27 20:41:27,730 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 79 transitions, 712 flow [2024-06-27 20:41:27,734 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 79 transitions, 666 flow, removed 10 selfloop flow, removed 4 redundant places. [2024-06-27 20:41:27,735 INFO L231 Difference]: Finished difference. Result has 77 places, 65 transitions, 501 flow [2024-06-27 20:41:27,735 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=420, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=501, PETRI_PLACES=77, PETRI_TRANSITIONS=65} [2024-06-27 20:41:27,735 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 46 predicate places. [2024-06-27 20:41:27,735 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 65 transitions, 501 flow [2024-06-27 20:41:27,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:27,736 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:27,736 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:27,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-06-27 20:41:27,736 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 20:41:27,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:27,736 INFO L85 PathProgramCache]: Analyzing trace with hash 968043893, now seen corresponding path program 4 times [2024-06-27 20:41:27,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:27,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278655764] [2024-06-27 20:41:27,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:27,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:28,285 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 20:41:28,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:28,285 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278655764] [2024-06-27 20:41:28,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278655764] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:28,286 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:28,286 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:28,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012256189] [2024-06-27 20:41:28,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:28,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:28,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:28,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:28,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:28,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:28,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 65 transitions, 501 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:28,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:28,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:28,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:28,506 INFO L124 PetriNetUnfolderBase]: 209/405 cut-off events. [2024-06-27 20:41:28,506 INFO L125 PetriNetUnfolderBase]: For 4177/4177 co-relation queries the response was YES. [2024-06-27 20:41:28,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1958 conditions, 405 events. 209/405 cut-off events. For 4177/4177 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1758 event pairs, 52 based on Foata normal form. 2/403 useless extension candidates. Maximal degree in co-relation 1922. Up to 282 conditions per place. [2024-06-27 20:41:28,508 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 49 selfloop transitions, 26 changer transitions 0/79 dead transitions. [2024-06-27 20:41:28,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 79 transitions, 702 flow [2024-06-27 20:41:28,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:28,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:28,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-27 20:41:28,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 20:41:28,510 INFO L175 Difference]: Start difference. First operand has 77 places, 65 transitions, 501 flow. Second operand 8 states and 112 transitions. [2024-06-27 20:41:28,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 79 transitions, 702 flow [2024-06-27 20:41:28,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 79 transitions, 639 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:28,515 INFO L231 Difference]: Finished difference. Result has 80 places, 66 transitions, 504 flow [2024-06-27 20:41:28,515 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=439, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=504, PETRI_PLACES=80, PETRI_TRANSITIONS=66} [2024-06-27 20:41:28,515 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 49 predicate places. [2024-06-27 20:41:28,516 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 66 transitions, 504 flow [2024-06-27 20:41:28,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:28,516 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:28,516 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:28,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-06-27 20:41:28,516 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 20:41:28,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:28,517 INFO L85 PathProgramCache]: Analyzing trace with hash 976625685, now seen corresponding path program 1 times [2024-06-27 20:41:28,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:28,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622101171] [2024-06-27 20:41:28,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:28,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:28,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:29,326 INFO 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 20:41:29,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:29,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622101171] [2024-06-27 20:41:29,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622101171] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:29,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:29,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:29,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610195925] [2024-06-27 20:41:29,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:29,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:29,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:29,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:29,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:29,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:29,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 66 transitions, 504 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:29,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:29,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:29,407 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:29,554 INFO L124 PetriNetUnfolderBase]: 207/401 cut-off events. [2024-06-27 20:41:29,555 INFO L125 PetriNetUnfolderBase]: For 4264/4266 co-relation queries the response was YES. [2024-06-27 20:41:29,556 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1949 conditions, 401 events. 207/401 cut-off events. For 4264/4266 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1724 event pairs, 55 based on Foata normal form. 1/401 useless extension candidates. Maximal degree in co-relation 1912. Up to 350 conditions per place. [2024-06-27 20:41:29,557 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 59 selfloop transitions, 14 changer transitions 0/77 dead transitions. [2024-06-27 20:41:29,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 77 transitions, 684 flow [2024-06-27 20:41:29,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:29,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:29,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 113 transitions. [2024-06-27 20:41:29,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3923611111111111 [2024-06-27 20:41:29,559 INFO L175 Difference]: Start difference. First operand has 80 places, 66 transitions, 504 flow. Second operand 9 states and 113 transitions. [2024-06-27 20:41:29,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 77 transitions, 684 flow [2024-06-27 20:41:29,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 77 transitions, 642 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:29,565 INFO L231 Difference]: Finished difference. Result has 84 places, 68 transitions, 511 flow [2024-06-27 20:41:29,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=462, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=511, PETRI_PLACES=84, PETRI_TRANSITIONS=68} [2024-06-27 20:41:29,566 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 53 predicate places. [2024-06-27 20:41:29,566 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 68 transitions, 511 flow [2024-06-27 20:41:29,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:29,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:29,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:29,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-06-27 20:41:29,567 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 20:41:29,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:29,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1032382866, now seen corresponding path program 1 times [2024-06-27 20:41:29,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:29,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965818762] [2024-06-27 20:41:29,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:29,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:29,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:30,252 INFO 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 20:41:30,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:30,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965818762] [2024-06-27 20:41:30,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965818762] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:30,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:30,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:30,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573862628] [2024-06-27 20:41:30,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:30,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:30,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:30,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:30,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:30,311 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:30,312 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 68 transitions, 511 flow. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:30,312 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:30,312 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:30,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:30,546 INFO L124 PetriNetUnfolderBase]: 205/399 cut-off events. [2024-06-27 20:41:30,546 INFO L125 PetriNetUnfolderBase]: For 4375/4375 co-relation queries the response was YES. [2024-06-27 20:41:30,547 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1932 conditions, 399 events. 205/399 cut-off events. For 4375/4375 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1723 event pairs, 51 based on Foata normal form. 1/399 useless extension candidates. Maximal degree in co-relation 1894. Up to 322 conditions per place. [2024-06-27 20:41:30,548 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 59 selfloop transitions, 20 changer transitions 0/83 dead transitions. [2024-06-27 20:41:30,548 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 83 transitions, 733 flow [2024-06-27 20:41:30,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:30,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:30,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 108 transitions. [2024-06-27 20:41:30,550 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 20:41:30,550 INFO L175 Difference]: Start difference. First operand has 84 places, 68 transitions, 511 flow. Second operand 8 states and 108 transitions. [2024-06-27 20:41:30,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 83 transitions, 733 flow [2024-06-27 20:41:30,554 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 83 transitions, 651 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-06-27 20:41:30,555 INFO L231 Difference]: Finished difference. Result has 82 places, 70 transitions, 505 flow [2024-06-27 20:41:30,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=429, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=505, PETRI_PLACES=82, PETRI_TRANSITIONS=70} [2024-06-27 20:41:30,556 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-06-27 20:41:30,556 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 70 transitions, 505 flow [2024-06-27 20:41:30,560 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:30,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:30,560 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:30,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-06-27 20:41:30,560 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 20:41:30,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:30,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1096274586, now seen corresponding path program 1 times [2024-06-27 20:41:30,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:30,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313251561] [2024-06-27 20:41:30,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:30,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:31,110 INFO 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 20:41:31,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:31,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313251561] [2024-06-27 20:41:31,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313251561] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:31,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:31,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:31,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306049004] [2024-06-27 20:41:31,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:31,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:31,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:31,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:31,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:31,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:31,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 70 transitions, 505 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:31,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:31,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:31,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:31,357 INFO L124 PetriNetUnfolderBase]: 211/409 cut-off events. [2024-06-27 20:41:31,357 INFO L125 PetriNetUnfolderBase]: For 5000/5000 co-relation queries the response was YES. [2024-06-27 20:41:31,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1987 conditions, 409 events. 211/409 cut-off events. For 5000/5000 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1775 event pairs, 46 based on Foata normal form. 2/410 useless extension candidates. Maximal degree in co-relation 1949. Up to 329 conditions per place. [2024-06-27 20:41:31,359 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 68 selfloop transitions, 16 changer transitions 0/88 dead transitions. [2024-06-27 20:41:31,359 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 88 transitions, 747 flow [2024-06-27 20:41:31,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:31,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:31,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 20:41:31,360 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 20:41:31,361 INFO L175 Difference]: Start difference. First operand has 82 places, 70 transitions, 505 flow. Second operand 9 states and 120 transitions. [2024-06-27 20:41:31,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 88 transitions, 747 flow [2024-06-27 20:41:31,365 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 88 transitions, 689 flow, removed 11 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:31,366 INFO L231 Difference]: Finished difference. Result has 85 places, 72 transitions, 512 flow [2024-06-27 20:41:31,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=447, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=512, PETRI_PLACES=85, PETRI_TRANSITIONS=72} [2024-06-27 20:41:31,367 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 54 predicate places. [2024-06-27 20:41:31,367 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 72 transitions, 512 flow [2024-06-27 20:41:31,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:31,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:31,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:31,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-06-27 20:41:31,367 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 20:41:31,368 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:31,368 INFO L85 PathProgramCache]: Analyzing trace with hash 210287878, now seen corresponding path program 2 times [2024-06-27 20:41:31,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:31,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696037174] [2024-06-27 20:41:31,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:31,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:31,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:31,913 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 20:41:31,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:31,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696037174] [2024-06-27 20:41:31,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696037174] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:31,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:31,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:31,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239004482] [2024-06-27 20:41:31,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:31,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:31,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:31,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:31,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:32,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:32,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 72 transitions, 512 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:32,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:32,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:32,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:32,166 INFO L124 PetriNetUnfolderBase]: 232/445 cut-off events. [2024-06-27 20:41:32,167 INFO L125 PetriNetUnfolderBase]: For 6464/6464 co-relation queries the response was YES. [2024-06-27 20:41:32,168 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2261 conditions, 445 events. 232/445 cut-off events. For 6464/6464 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1963 event pairs, 44 based on Foata normal form. 2/443 useless extension candidates. Maximal degree in co-relation 2222. Up to 277 conditions per place. [2024-06-27 20:41:32,170 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 56 selfloop transitions, 35 changer transitions 0/95 dead transitions. [2024-06-27 20:41:32,170 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 95 transitions, 906 flow [2024-06-27 20:41:32,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:32,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:32,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-27 20:41:32,172 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 20:41:32,172 INFO L175 Difference]: Start difference. First operand has 85 places, 72 transitions, 512 flow. Second operand 9 states and 126 transitions. [2024-06-27 20:41:32,172 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 95 transitions, 906 flow [2024-06-27 20:41:32,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 95 transitions, 857 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:32,181 INFO L231 Difference]: Finished difference. Result has 87 places, 78 transitions, 626 flow [2024-06-27 20:41:32,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=463, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=626, PETRI_PLACES=87, PETRI_TRANSITIONS=78} [2024-06-27 20:41:32,181 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 56 predicate places. [2024-06-27 20:41:32,182 INFO L495 AbstractCegarLoop]: Abstraction has has 87 places, 78 transitions, 626 flow [2024-06-27 20:41:32,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:32,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:32,182 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:32,182 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-06-27 20:41:32,182 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 20:41:32,183 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:32,183 INFO L85 PathProgramCache]: Analyzing trace with hash 210614308, now seen corresponding path program 3 times [2024-06-27 20:41:32,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:32,184 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409158252] [2024-06-27 20:41:32,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:32,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:32,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:32,764 INFO 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 20:41:32,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:32,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409158252] [2024-06-27 20:41:32,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409158252] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:32,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:32,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:32,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697492816] [2024-06-27 20:41:32,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:32,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:32,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:32,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:32,765 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:32,848 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:32,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 78 transitions, 626 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:32,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:32,849 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:32,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:33,034 INFO L124 PetriNetUnfolderBase]: 228/440 cut-off events. [2024-06-27 20:41:33,034 INFO L125 PetriNetUnfolderBase]: For 6817/6819 co-relation queries the response was YES. [2024-06-27 20:41:33,035 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2286 conditions, 440 events. 228/440 cut-off events. For 6817/6819 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1936 event pairs, 60 based on Foata normal form. 2/441 useless extension candidates. Maximal degree in co-relation 2246. Up to 382 conditions per place. [2024-06-27 20:41:33,037 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 70 selfloop transitions, 14 changer transitions 0/88 dead transitions. [2024-06-27 20:41:33,037 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 88 transitions, 820 flow [2024-06-27 20:41:33,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:33,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:33,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-06-27 20:41:33,038 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 20:41:33,038 INFO L175 Difference]: Start difference. First operand has 87 places, 78 transitions, 626 flow. Second operand 9 states and 114 transitions. [2024-06-27 20:41:33,038 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 88 transitions, 820 flow [2024-06-27 20:41:33,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 88 transitions, 746 flow, removed 24 selfloop flow, removed 4 redundant places. [2024-06-27 20:41:33,045 INFO L231 Difference]: Finished difference. Result has 92 places, 78 transitions, 585 flow [2024-06-27 20:41:33,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=585, PETRI_PLACES=92, PETRI_TRANSITIONS=78} [2024-06-27 20:41:33,046 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-06-27 20:41:33,046 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 78 transitions, 585 flow [2024-06-27 20:41:33,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:33,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:33,046 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:33,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-06-27 20:41:33,046 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 20:41:33,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:33,047 INFO L85 PathProgramCache]: Analyzing trace with hash -1151712826, now seen corresponding path program 4 times [2024-06-27 20:41:33,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:33,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868083490] [2024-06-27 20:41:33,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:33,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:33,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:33,587 INFO 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 20:41:33,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:33,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868083490] [2024-06-27 20:41:33,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868083490] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:33,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:33,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:33,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76046688] [2024-06-27 20:41:33,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:33,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:33,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:33,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:33,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:33,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:33,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 78 transitions, 585 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:33,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:33,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:33,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:33,827 INFO L124 PetriNetUnfolderBase]: 234/449 cut-off events. [2024-06-27 20:41:33,828 INFO L125 PetriNetUnfolderBase]: For 7161/7161 co-relation queries the response was YES. [2024-06-27 20:41:33,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2329 conditions, 449 events. 234/449 cut-off events. For 7161/7161 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1984 event pairs, 45 based on Foata normal form. 2/447 useless extension candidates. Maximal degree in co-relation 2287. Up to 280 conditions per place. [2024-06-27 20:41:33,830 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 57 selfloop transitions, 35 changer transitions 0/96 dead transitions. [2024-06-27 20:41:33,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 96 transitions, 891 flow [2024-06-27 20:41:33,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:33,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:33,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-27 20:41:33,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 20:41:33,832 INFO L175 Difference]: Start difference. First operand has 92 places, 78 transitions, 585 flow. Second operand 9 states and 126 transitions. [2024-06-27 20:41:33,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 96 transitions, 891 flow [2024-06-27 20:41:33,838 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 96 transitions, 858 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-06-27 20:41:33,840 INFO L231 Difference]: Finished difference. Result has 93 places, 80 transitions, 657 flow [2024-06-27 20:41:33,840 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=552, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=657, PETRI_PLACES=93, PETRI_TRANSITIONS=80} [2024-06-27 20:41:33,840 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 62 predicate places. [2024-06-27 20:41:33,840 INFO L495 AbstractCegarLoop]: Abstraction has has 93 places, 80 transitions, 657 flow [2024-06-27 20:41:33,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:33,840 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:33,841 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:33,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-06-27 20:41:33,841 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 20:41:33,841 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:33,841 INFO L85 PathProgramCache]: Analyzing trace with hash -55409402, now seen corresponding path program 5 times [2024-06-27 20:41:33,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:33,841 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817785203] [2024-06-27 20:41:33,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:33,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:33,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:34,383 INFO 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 20:41:34,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:34,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817785203] [2024-06-27 20:41:34,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817785203] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:34,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:34,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:34,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928961575] [2024-06-27 20:41:34,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:34,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:34,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:34,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:34,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:34,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:34,457 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 80 transitions, 657 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:34,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:34,458 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:34,458 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:34,622 INFO L124 PetriNetUnfolderBase]: 230/443 cut-off events. [2024-06-27 20:41:34,622 INFO L125 PetriNetUnfolderBase]: For 7370/7370 co-relation queries the response was YES. [2024-06-27 20:41:34,624 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2344 conditions, 443 events. 230/443 cut-off events. For 7370/7370 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1957 event pairs, 55 based on Foata normal form. 2/441 useless extension candidates. Maximal degree in co-relation 2301. Up to 277 conditions per place. [2024-06-27 20:41:34,626 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 57 selfloop transitions, 34 changer transitions 0/95 dead transitions. [2024-06-27 20:41:34,626 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 95 transitions, 887 flow [2024-06-27 20:41:34,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:34,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:34,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 126 transitions. [2024-06-27 20:41:34,627 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 20:41:34,627 INFO L175 Difference]: Start difference. First operand has 93 places, 80 transitions, 657 flow. Second operand 9 states and 126 transitions. [2024-06-27 20:41:34,627 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 101 places, 95 transitions, 887 flow [2024-06-27 20:41:34,635 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 95 transitions, 801 flow, removed 17 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:34,636 INFO L231 Difference]: Finished difference. Result has 96 places, 80 transitions, 644 flow [2024-06-27 20:41:34,636 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=571, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=644, PETRI_PLACES=96, PETRI_TRANSITIONS=80} [2024-06-27 20:41:34,637 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 65 predicate places. [2024-06-27 20:41:34,637 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 80 transitions, 644 flow [2024-06-27 20:41:34,637 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:34,637 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:34,637 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:34,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-06-27 20:41:34,638 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 20:41:34,638 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:34,638 INFO L85 PathProgramCache]: Analyzing trace with hash 210626212, now seen corresponding path program 1 times [2024-06-27 20:41:34,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:34,638 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091900373] [2024-06-27 20:41:34,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:34,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:34,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:35,366 INFO 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 20:41:35,366 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:35,366 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091900373] [2024-06-27 20:41:35,366 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091900373] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:35,366 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:35,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:41:35,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816887729] [2024-06-27 20:41:35,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:35,366 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:41:35,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:35,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:41:35,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:41:35,463 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:35,464 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 80 transitions, 644 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:35,464 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:35,464 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:35,464 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:35,599 INFO L124 PetriNetUnfolderBase]: 227/439 cut-off events. [2024-06-27 20:41:35,599 INFO L125 PetriNetUnfolderBase]: For 7274/7276 co-relation queries the response was YES. [2024-06-27 20:41:35,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2282 conditions, 439 events. 227/439 cut-off events. For 7274/7276 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1933 event pairs, 60 based on Foata normal form. 2/440 useless extension candidates. Maximal degree in co-relation 2238. Up to 378 conditions per place. [2024-06-27 20:41:35,602 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 72 selfloop transitions, 15 changer transitions 0/91 dead transitions. [2024-06-27 20:41:35,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 91 transitions, 844 flow [2024-06-27 20:41:35,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:41:35,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:41:35,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-06-27 20:41:35,603 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.384375 [2024-06-27 20:41:35,603 INFO L175 Difference]: Start difference. First operand has 96 places, 80 transitions, 644 flow. Second operand 10 states and 123 transitions. [2024-06-27 20:41:35,603 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 91 transitions, 844 flow [2024-06-27 20:41:35,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 91 transitions, 738 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 20:41:35,610 INFO L231 Difference]: Finished difference. Result has 97 places, 80 transitions, 572 flow [2024-06-27 20:41:35,610 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=572, PETRI_PLACES=97, PETRI_TRANSITIONS=80} [2024-06-27 20:41:35,611 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-27 20:41:35,611 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 80 transitions, 572 flow [2024-06-27 20:41:35,611 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:35,611 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:35,611 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:35,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-06-27 20:41:35,611 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 20:41:35,612 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:35,612 INFO L85 PathProgramCache]: Analyzing trace with hash 562313588, now seen corresponding path program 1 times [2024-06-27 20:41:35,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:35,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088615638] [2024-06-27 20:41:35,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:35,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:36,209 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 20:41:36,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:36,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088615638] [2024-06-27 20:41:36,209 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088615638] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:36,209 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:36,209 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:36,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099618839] [2024-06-27 20:41:36,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:36,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:36,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:36,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:36,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:36,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 20:41:36,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 80 transitions, 572 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:36,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:36,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 20:41:36,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:36,527 INFO L124 PetriNetUnfolderBase]: 212/427 cut-off events. [2024-06-27 20:41:36,527 INFO L125 PetriNetUnfolderBase]: For 7927/7928 co-relation queries the response was YES. [2024-06-27 20:41:36,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2181 conditions, 427 events. 212/427 cut-off events. For 7927/7928 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1920 event pairs, 29 based on Foata normal form. 3/429 useless extension candidates. Maximal degree in co-relation 2136. Up to 307 conditions per place. [2024-06-27 20:41:36,530 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 70 selfloop transitions, 16 changer transitions 0/96 dead transitions. [2024-06-27 20:41:36,531 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 96 transitions, 796 flow [2024-06-27 20:41:36,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:36,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:36,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 114 transitions. [2024-06-27 20:41:36,531 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4453125 [2024-06-27 20:41:36,531 INFO L175 Difference]: Start difference. First operand has 97 places, 80 transitions, 572 flow. Second operand 8 states and 114 transitions. [2024-06-27 20:41:36,532 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 96 transitions, 796 flow [2024-06-27 20:41:36,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 96 transitions, 758 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 20:41:36,538 INFO L231 Difference]: Finished difference. Result has 97 places, 81 transitions, 582 flow [2024-06-27 20:41:36,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=534, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=582, PETRI_PLACES=97, PETRI_TRANSITIONS=81} [2024-06-27 20:41:36,539 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-27 20:41:36,539 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 81 transitions, 582 flow [2024-06-27 20:41:36,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:36,539 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:36,539 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:36,540 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-06-27 20:41:36,540 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 20:41:36,540 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:36,540 INFO L85 PathProgramCache]: Analyzing trace with hash 675398422, now seen corresponding path program 2 times [2024-06-27 20:41:36,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:36,540 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605241798] [2024-06-27 20:41:36,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:36,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:36,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:37,216 INFO 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 20:41:37,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:37,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605241798] [2024-06-27 20:41:37,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605241798] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:37,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:37,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:37,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1420047550] [2024-06-27 20:41:37,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:37,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:37,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:37,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:37,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:37,288 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 20:41:37,288 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 81 transitions, 582 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:37,288 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:37,288 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 20:41:37,288 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:37,505 INFO L124 PetriNetUnfolderBase]: 216/435 cut-off events. [2024-06-27 20:41:37,506 INFO L125 PetriNetUnfolderBase]: For 8600/8601 co-relation queries the response was YES. [2024-06-27 20:41:37,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2245 conditions, 435 events. 216/435 cut-off events. For 8600/8601 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1967 event pairs, 46 based on Foata normal form. 3/437 useless extension candidates. Maximal degree in co-relation 2199. Up to 331 conditions per place. [2024-06-27 20:41:37,509 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 67 selfloop transitions, 19 changer transitions 0/96 dead transitions. [2024-06-27 20:41:37,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 96 transitions, 806 flow [2024-06-27 20:41:37,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:37,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:37,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 115 transitions. [2024-06-27 20:41:37,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44921875 [2024-06-27 20:41:37,510 INFO L175 Difference]: Start difference. First operand has 97 places, 81 transitions, 582 flow. Second operand 8 states and 115 transitions. [2024-06-27 20:41:37,510 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 96 transitions, 806 flow [2024-06-27 20:41:37,517 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 96 transitions, 768 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:37,519 INFO L231 Difference]: Finished difference. Result has 99 places, 82 transitions, 601 flow [2024-06-27 20:41:37,519 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=544, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=601, PETRI_PLACES=99, PETRI_TRANSITIONS=82} [2024-06-27 20:41:37,519 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 68 predicate places. [2024-06-27 20:41:37,519 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 82 transitions, 601 flow [2024-06-27 20:41:37,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:37,520 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:37,520 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:37,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-06-27 20:41:37,520 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 20:41:37,520 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:37,520 INFO L85 PathProgramCache]: Analyzing trace with hash 565175508, now seen corresponding path program 1 times [2024-06-27 20:41:37,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:37,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121365930] [2024-06-27 20:41:37,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:37,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:37,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:38,175 INFO 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 20:41:38,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:38,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121365930] [2024-06-27 20:41:38,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121365930] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:38,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:38,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:38,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155273169] [2024-06-27 20:41:38,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:38,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:38,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:38,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:38,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:38,244 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:38,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 82 transitions, 601 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:38,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:38,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:38,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:38,475 INFO L124 PetriNetUnfolderBase]: 233/453 cut-off events. [2024-06-27 20:41:38,475 INFO L125 PetriNetUnfolderBase]: For 8273/8273 co-relation queries the response was YES. [2024-06-27 20:41:38,477 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2299 conditions, 453 events. 233/453 cut-off events. For 8273/8273 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2023 event pairs, 54 based on Foata normal form. 1/453 useless extension candidates. Maximal degree in co-relation 2252. Up to 369 conditions per place. [2024-06-27 20:41:38,478 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 72 selfloop transitions, 22 changer transitions 0/98 dead transitions. [2024-06-27 20:41:38,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 98 transitions, 859 flow [2024-06-27 20:41:38,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:38,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:38,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-27 20:41:38,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-27 20:41:38,480 INFO L175 Difference]: Start difference. First operand has 99 places, 82 transitions, 601 flow. Second operand 9 states and 119 transitions. [2024-06-27 20:41:38,480 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 98 transitions, 859 flow [2024-06-27 20:41:38,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 98 transitions, 814 flow, removed 5 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:38,493 INFO L231 Difference]: Finished difference. Result has 102 places, 84 transitions, 639 flow [2024-06-27 20:41:38,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=556, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=639, PETRI_PLACES=102, PETRI_TRANSITIONS=84} [2024-06-27 20:41:38,493 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 71 predicate places. [2024-06-27 20:41:38,493 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 84 transitions, 639 flow [2024-06-27 20:41:38,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:38,494 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:38,494 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:38,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-06-27 20:41:38,494 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 20:41:38,494 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:38,494 INFO L85 PathProgramCache]: Analyzing trace with hash 846100852, now seen corresponding path program 3 times [2024-06-27 20:41:38,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:38,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929258215] [2024-06-27 20:41:38,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:38,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:39,157 INFO 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 20:41:39,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:39,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929258215] [2024-06-27 20:41:39,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929258215] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:39,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:39,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:39,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735544141] [2024-06-27 20:41:39,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:39,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:39,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:39,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:39,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:39,237 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 20:41:39,238 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 84 transitions, 639 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:39,238 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:39,238 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 20:41:39,238 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:39,472 INFO L124 PetriNetUnfolderBase]: 219/441 cut-off events. [2024-06-27 20:41:39,472 INFO L125 PetriNetUnfolderBase]: For 9502/9503 co-relation queries the response was YES. [2024-06-27 20:41:39,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2299 conditions, 441 events. 219/441 cut-off events. For 9502/9503 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2005 event pairs, 42 based on Foata normal form. 3/443 useless extension candidates. Maximal degree in co-relation 2251. Up to 355 conditions per place. [2024-06-27 20:41:39,475 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 76 selfloop transitions, 13 changer transitions 0/99 dead transitions. [2024-06-27 20:41:39,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 99 transitions, 875 flow [2024-06-27 20:41:39,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:39,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:39,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-27 20:41:39,477 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 20:41:39,477 INFO L175 Difference]: Start difference. First operand has 102 places, 84 transitions, 639 flow. Second operand 8 states and 112 transitions. [2024-06-27 20:41:39,477 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 99 transitions, 875 flow [2024-06-27 20:41:39,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 99 transitions, 808 flow, removed 13 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:39,487 INFO L231 Difference]: Finished difference. Result has 104 places, 87 transitions, 634 flow [2024-06-27 20:41:39,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=634, PETRI_PLACES=104, PETRI_TRANSITIONS=87} [2024-06-27 20:41:39,488 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 73 predicate places. [2024-06-27 20:41:39,488 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 87 transitions, 634 flow [2024-06-27 20:41:39,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:39,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:39,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:39,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-06-27 20:41:39,488 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 20:41:39,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:39,489 INFO L85 PathProgramCache]: Analyzing trace with hash 175936994, now seen corresponding path program 1 times [2024-06-27 20:41:39,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:39,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912345120] [2024-06-27 20:41:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:39,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:39,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:40,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:40,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:40,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912345120] [2024-06-27 20:41:40,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912345120] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:40,185 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:40,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:41:40,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245661747] [2024-06-27 20:41:40,185 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:40,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:41:40,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:40,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:41:40,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:41:40,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:40,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 87 transitions, 634 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:40,268 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:40,268 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:40,268 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:40,491 INFO L124 PetriNetUnfolderBase]: 243/471 cut-off events. [2024-06-27 20:41:40,492 INFO L125 PetriNetUnfolderBase]: For 9972/9972 co-relation queries the response was YES. [2024-06-27 20:41:40,493 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2450 conditions, 471 events. 243/471 cut-off events. For 9972/9972 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2126 event pairs, 47 based on Foata normal form. 2/472 useless extension candidates. Maximal degree in co-relation 2400. Up to 381 conditions per place. [2024-06-27 20:41:40,495 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 82 selfloop transitions, 20 changer transitions 0/106 dead transitions. [2024-06-27 20:41:40,495 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 106 transitions, 928 flow [2024-06-27 20:41:40,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:41:40,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:41:40,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-27 20:41:40,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-27 20:41:40,497 INFO L175 Difference]: Start difference. First operand has 104 places, 87 transitions, 634 flow. Second operand 10 states and 132 transitions. [2024-06-27 20:41:40,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 106 transitions, 928 flow [2024-06-27 20:41:40,506 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 106 transitions, 892 flow, removed 7 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:40,508 INFO L231 Difference]: Finished difference. Result has 109 places, 90 transitions, 686 flow [2024-06-27 20:41:40,508 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=598, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=686, PETRI_PLACES=109, PETRI_TRANSITIONS=90} [2024-06-27 20:41:40,508 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 78 predicate places. [2024-06-27 20:41:40,509 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 90 transitions, 686 flow [2024-06-27 20:41:40,509 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:40,509 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:40,509 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:40,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-06-27 20:41:40,509 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 20:41:40,509 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:40,509 INFO L85 PathProgramCache]: Analyzing trace with hash -1724370572, now seen corresponding path program 4 times [2024-06-27 20:41:40,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:40,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121709549] [2024-06-27 20:41:40,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:40,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:40,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:41,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:41,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:41,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121709549] [2024-06-27 20:41:41,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121709549] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:41,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:41,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-06-27 20:41:41,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735909912] [2024-06-27 20:41:41,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:41,221 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-06-27 20:41:41,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:41,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-06-27 20:41:41,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-06-27 20:41:41,302 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 32 [2024-06-27 20:41:41,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 90 transitions, 686 flow. Second operand has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:41,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:41,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 32 [2024-06-27 20:41:41,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:41,509 INFO L124 PetriNetUnfolderBase]: 222/448 cut-off events. [2024-06-27 20:41:41,509 INFO L125 PetriNetUnfolderBase]: For 10345/10348 co-relation queries the response was YES. [2024-06-27 20:41:41,511 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2359 conditions, 448 events. 222/448 cut-off events. For 10345/10348 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 2036 event pairs, 43 based on Foata normal form. 5/449 useless extension candidates. Maximal degree in co-relation 2308. Up to 351 conditions per place. [2024-06-27 20:41:41,512 INFO L140 encePairwiseOnDemand]: 24/32 looper letters, 75 selfloop transitions, 17 changer transitions 0/102 dead transitions. [2024-06-27 20:41:41,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 102 transitions, 912 flow [2024-06-27 20:41:41,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-06-27 20:41:41,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-06-27 20:41:41,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 112 transitions. [2024-06-27 20:41:41,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4375 [2024-06-27 20:41:41,515 INFO L175 Difference]: Start difference. First operand has 109 places, 90 transitions, 686 flow. Second operand 8 states and 112 transitions. [2024-06-27 20:41:41,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 102 transitions, 912 flow [2024-06-27 20:41:41,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 102 transitions, 846 flow, removed 15 selfloop flow, removed 8 redundant places. [2024-06-27 20:41:41,528 INFO L231 Difference]: Finished difference. Result has 110 places, 92 transitions, 677 flow [2024-06-27 20:41:41,528 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=620, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=677, PETRI_PLACES=110, PETRI_TRANSITIONS=92} [2024-06-27 20:41:41,528 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2024-06-27 20:41:41,528 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 92 transitions, 677 flow [2024-06-27 20:41:41,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.333333333333334) internal successors, (93), 9 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:41,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:41,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:41,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-06-27 20:41:41,529 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 20:41:41,529 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:41,529 INFO L85 PathProgramCache]: Analyzing trace with hash 1756987734, now seen corresponding path program 2 times [2024-06-27 20:41:41,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:41,530 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984306400] [2024-06-27 20:41:41,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:41,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:41,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:42,237 INFO 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 20:41:42,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:42,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984306400] [2024-06-27 20:41:42,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984306400] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:42,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:42,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:41:42,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656607705] [2024-06-27 20:41:42,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:42,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:41:42,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:42,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:41:42,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:41:42,323 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:42,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 92 transitions, 677 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:42,324 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:42,324 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:42,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:42,501 INFO L124 PetriNetUnfolderBase]: 246/478 cut-off events. [2024-06-27 20:41:42,501 INFO L125 PetriNetUnfolderBase]: For 10609/10609 co-relation queries the response was YES. [2024-06-27 20:41:42,503 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2538 conditions, 478 events. 246/478 cut-off events. For 10609/10609 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 2181 event pairs, 47 based on Foata normal form. 2/476 useless extension candidates. Maximal degree in co-relation 2485. Up to 302 conditions per place. [2024-06-27 20:41:42,505 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 66 selfloop transitions, 40 changer transitions 0/110 dead transitions. [2024-06-27 20:41:42,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 110 transitions, 1003 flow [2024-06-27 20:41:42,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:41:42,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:41:42,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 137 transitions. [2024-06-27 20:41:42,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.428125 [2024-06-27 20:41:42,507 INFO L175 Difference]: Start difference. First operand has 110 places, 92 transitions, 677 flow. Second operand 10 states and 137 transitions. [2024-06-27 20:41:42,508 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 110 transitions, 1003 flow [2024-06-27 20:41:42,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 110 transitions, 935 flow, removed 10 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:42,521 INFO L231 Difference]: Finished difference. Result has 114 places, 95 transitions, 745 flow [2024-06-27 20:41:42,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=609, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=92, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=745, PETRI_PLACES=114, PETRI_TRANSITIONS=95} [2024-06-27 20:41:42,522 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 83 predicate places. [2024-06-27 20:41:42,522 INFO L495 AbstractCegarLoop]: Abstraction has has 114 places, 95 transitions, 745 flow [2024-06-27 20:41:42,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:42,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:42,522 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:42,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-06-27 20:41:42,523 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 20:41:42,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:42,523 INFO L85 PathProgramCache]: Analyzing trace with hash -1565003260, now seen corresponding path program 3 times [2024-06-27 20:41:42,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:42,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886516492] [2024-06-27 20:41:42,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:42,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:42,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:43,242 INFO 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 20:41:43,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:43,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886516492] [2024-06-27 20:41:43,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886516492] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:43,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:43,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:41:43,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985210398] [2024-06-27 20:41:43,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:43,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:41:43,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:43,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:41:43,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:41:43,327 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:43,328 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 95 transitions, 745 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:43,328 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:43,328 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:43,328 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:43,568 INFO L124 PetriNetUnfolderBase]: 252/488 cut-off events. [2024-06-27 20:41:43,568 INFO L125 PetriNetUnfolderBase]: For 11520/11520 co-relation queries the response was YES. [2024-06-27 20:41:43,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2707 conditions, 488 events. 252/488 cut-off events. For 11520/11520 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 2227 event pairs, 47 based on Foata normal form. 2/486 useless extension candidates. Maximal degree in co-relation 2653. Up to 312 conditions per place. [2024-06-27 20:41:43,571 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 72 selfloop transitions, 38 changer transitions 0/114 dead transitions. [2024-06-27 20:41:43,571 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 114 transitions, 1105 flow [2024-06-27 20:41:43,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:41:43,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:41:43,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 138 transitions. [2024-06-27 20:41:43,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43125 [2024-06-27 20:41:43,573 INFO L175 Difference]: Start difference. First operand has 114 places, 95 transitions, 745 flow. Second operand 10 states and 138 transitions. [2024-06-27 20:41:43,573 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 114 transitions, 1105 flow [2024-06-27 20:41:43,584 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 114 transitions, 991 flow, removed 19 selfloop flow, removed 8 redundant places. [2024-06-27 20:41:43,586 INFO L231 Difference]: Finished difference. Result has 116 places, 98 transitions, 769 flow [2024-06-27 20:41:43,586 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=631, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=769, PETRI_PLACES=116, PETRI_TRANSITIONS=98} [2024-06-27 20:41:43,586 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 85 predicate places. [2024-06-27 20:41:43,586 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 98 transitions, 769 flow [2024-06-27 20:41:43,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:43,587 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:43,587 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:43,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-06-27 20:41:43,587 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 20:41:43,587 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:43,587 INFO L85 PathProgramCache]: Analyzing trace with hash -2071009356, now seen corresponding path program 4 times [2024-06-27 20:41:43,587 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:43,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869356662] [2024-06-27 20:41:43,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:43,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:43,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:44,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:44,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:44,263 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869356662] [2024-06-27 20:41:44,263 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1869356662] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:44,263 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:44,263 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:41:44,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946851761] [2024-06-27 20:41:44,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:44,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:41:44,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:44,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:41:44,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:41:44,351 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:44,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 98 transitions, 769 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:44,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:44,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:44,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:44,548 INFO L124 PetriNetUnfolderBase]: 258/498 cut-off events. [2024-06-27 20:41:44,548 INFO L125 PetriNetUnfolderBase]: For 12461/12461 co-relation queries the response was YES. [2024-06-27 20:41:44,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2828 conditions, 498 events. 258/498 cut-off events. For 12461/12461 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 2279 event pairs, 37 based on Foata normal form. 2/496 useless extension candidates. Maximal degree in co-relation 2773. Up to 322 conditions per place. [2024-06-27 20:41:44,551 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 70 selfloop transitions, 42 changer transitions 0/116 dead transitions. [2024-06-27 20:41:44,551 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 116 transitions, 1135 flow [2024-06-27 20:41:44,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:41:44,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:41:44,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-27 20:41:44,552 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 20:41:44,552 INFO L175 Difference]: Start difference. First operand has 116 places, 98 transitions, 769 flow. Second operand 10 states and 136 transitions. [2024-06-27 20:41:44,552 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 116 transitions, 1135 flow [2024-06-27 20:41:44,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 116 transitions, 1019 flow, removed 22 selfloop flow, removed 8 redundant places. [2024-06-27 20:41:44,568 INFO L231 Difference]: Finished difference. Result has 118 places, 101 transitions, 805 flow [2024-06-27 20:41:44,568 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=805, PETRI_PLACES=118, PETRI_TRANSITIONS=101} [2024-06-27 20:41:44,569 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 87 predicate places. [2024-06-27 20:41:44,569 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 101 transitions, 805 flow [2024-06-27 20:41:44,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:44,569 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:44,569 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:44,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-06-27 20:41:44,569 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 20:41:44,569 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:44,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1335026350, now seen corresponding path program 5 times [2024-06-27 20:41:44,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:44,570 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1626087664] [2024-06-27 20:41:44,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:44,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:45,332 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 20:41:45,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:45,332 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1626087664] [2024-06-27 20:41:45,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1626087664] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:45,333 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:45,333 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:41:45,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605141417] [2024-06-27 20:41:45,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:45,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:41:45,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:45,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:41:45,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:41:45,408 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:45,409 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 101 transitions, 805 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:45,409 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:45,409 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:45,409 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:45,626 INFO L124 PetriNetUnfolderBase]: 264/511 cut-off events. [2024-06-27 20:41:45,627 INFO L125 PetriNetUnfolderBase]: For 13490/13492 co-relation queries the response was YES. [2024-06-27 20:41:45,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2968 conditions, 511 events. 264/511 cut-off events. For 13490/13492 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2350 event pairs, 51 based on Foata normal form. 2/512 useless extension candidates. Maximal degree in co-relation 2912. Up to 441 conditions per place. [2024-06-27 20:41:45,630 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 94 selfloop transitions, 17 changer transitions 0/115 dead transitions. [2024-06-27 20:41:45,630 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 115 transitions, 1129 flow [2024-06-27 20:41:45,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:41:45,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:41:45,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 126 transitions. [2024-06-27 20:41:45,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39375 [2024-06-27 20:41:45,643 INFO L175 Difference]: Start difference. First operand has 118 places, 101 transitions, 805 flow. Second operand 10 states and 126 transitions. [2024-06-27 20:41:45,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 115 transitions, 1129 flow [2024-06-27 20:41:45,658 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 115 transitions, 999 flow, removed 25 selfloop flow, removed 8 redundant places. [2024-06-27 20:41:45,660 INFO L231 Difference]: Finished difference. Result has 120 places, 104 transitions, 783 flow [2024-06-27 20:41:45,660 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=84, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=783, PETRI_PLACES=120, PETRI_TRANSITIONS=104} [2024-06-27 20:41:45,660 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-06-27 20:41:45,660 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 104 transitions, 783 flow [2024-06-27 20:41:45,660 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:45,660 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:45,660 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:41:45,660 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-06-27 20:41:45,661 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 20:41:45,661 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:45,661 INFO L85 PathProgramCache]: Analyzing trace with hash -2060533836, now seen corresponding path program 6 times [2024-06-27 20:41:45,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:45,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699139347] [2024-06-27 20:41:45,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:45,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:46,451 INFO 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 20:41:46,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:46,451 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [699139347] [2024-06-27 20:41:46,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [699139347] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:46,451 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:46,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:41:46,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479086785] [2024-06-27 20:41:46,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:46,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:41:46,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:46,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:41:46,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:41:46,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:46,563 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 104 transitions, 783 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:46,563 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:46,563 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:46,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:46,831 INFO L124 PetriNetUnfolderBase]: 262/508 cut-off events. [2024-06-27 20:41:46,832 INFO L125 PetriNetUnfolderBase]: For 13175/13177 co-relation queries the response was YES. [2024-06-27 20:41:46,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2878 conditions, 508 events. 262/508 cut-off events. For 13175/13177 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2335 event pairs, 51 based on Foata normal form. 1/508 useless extension candidates. Maximal degree in co-relation 2821. Up to 432 conditions per place. [2024-06-27 20:41:46,835 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 93 selfloop transitions, 21 changer transitions 0/118 dead transitions. [2024-06-27 20:41:46,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 118 transitions, 1087 flow [2024-06-27 20:41:46,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:41:46,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:41:46,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 137 transitions. [2024-06-27 20:41:46,836 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38920454545454547 [2024-06-27 20:41:46,836 INFO L175 Difference]: Start difference. First operand has 120 places, 104 transitions, 783 flow. Second operand 11 states and 137 transitions. [2024-06-27 20:41:46,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 118 transitions, 1087 flow [2024-06-27 20:41:46,871 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 118 transitions, 1001 flow, removed 28 selfloop flow, removed 8 redundant places. [2024-06-27 20:41:46,873 INFO L231 Difference]: Finished difference. Result has 123 places, 106 transitions, 784 flow [2024-06-27 20:41:46,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=697, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=784, PETRI_PLACES=123, PETRI_TRANSITIONS=106} [2024-06-27 20:41:46,873 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-27 20:41:46,873 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 106 transitions, 784 flow [2024-06-27 20:41:46,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:46,873 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:46,874 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 20:41:46,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-06-27 20:41:46,874 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 20:41:46,874 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:46,874 INFO L85 PathProgramCache]: Analyzing trace with hash 838367549, now seen corresponding path program 1 times [2024-06-27 20:41:46,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:46,874 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879990753] [2024-06-27 20:41:46,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:46,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:46,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:47,569 INFO 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 20:41:47,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:47,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879990753] [2024-06-27 20:41:47,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879990753] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:47,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:47,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:47,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386162751] [2024-06-27 20:41:47,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:47,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:47,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:47,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:47,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:47,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:47,646 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 106 transitions, 784 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:47,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:47,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:47,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:47,872 INFO L124 PetriNetUnfolderBase]: 266/517 cut-off events. [2024-06-27 20:41:47,873 INFO L125 PetriNetUnfolderBase]: For 14346/14346 co-relation queries the response was YES. [2024-06-27 20:41:47,874 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2927 conditions, 517 events. 266/517 cut-off events. For 14346/14346 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 2388 event pairs, 27 based on Foata normal form. 2/518 useless extension candidates. Maximal degree in co-relation 2869. Up to 403 conditions per place. [2024-06-27 20:41:47,876 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 103 selfloop transitions, 17 changer transitions 0/124 dead transitions. [2024-06-27 20:41:47,876 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 124 transitions, 1080 flow [2024-06-27 20:41:47,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:47,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:47,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 20:41:47,878 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-27 20:41:47,878 INFO L175 Difference]: Start difference. First operand has 123 places, 106 transitions, 784 flow. Second operand 9 states and 118 transitions. [2024-06-27 20:41:47,878 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 124 transitions, 1080 flow [2024-06-27 20:41:47,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 124 transitions, 1021 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 20:41:47,893 INFO L231 Difference]: Finished difference. Result has 123 places, 107 transitions, 775 flow [2024-06-27 20:41:47,893 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=725, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=775, PETRI_PLACES=123, PETRI_TRANSITIONS=107} [2024-06-27 20:41:47,894 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 92 predicate places. [2024-06-27 20:41:47,894 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 107 transitions, 775 flow [2024-06-27 20:41:47,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:47,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:47,894 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 20:41:47,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-06-27 20:41:47,895 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 20:41:47,895 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:47,895 INFO L85 PathProgramCache]: Analyzing trace with hash 840245219, now seen corresponding path program 2 times [2024-06-27 20:41:47,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:47,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175546635] [2024-06-27 20:41:47,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:47,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:47,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:48,594 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 20:41:48,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:48,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175546635] [2024-06-27 20:41:48,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175546635] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:48,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:48,595 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:48,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021507619] [2024-06-27 20:41:48,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:48,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:48,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:48,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:48,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:48,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:48,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 107 transitions, 775 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:48,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:48,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:48,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:48,891 INFO L124 PetriNetUnfolderBase]: 270/525 cut-off events. [2024-06-27 20:41:48,892 INFO L125 PetriNetUnfolderBase]: For 14986/14986 co-relation queries the response was YES. [2024-06-27 20:41:48,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2977 conditions, 525 events. 270/525 cut-off events. For 14986/14986 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2439 event pairs, 48 based on Foata normal form. 2/526 useless extension candidates. Maximal degree in co-relation 2918. Up to 432 conditions per place. [2024-06-27 20:41:48,895 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 98 selfloop transitions, 21 changer transitions 0/123 dead transitions. [2024-06-27 20:41:48,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 123 transitions, 1067 flow [2024-06-27 20:41:48,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:48,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:48,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-27 20:41:48,896 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-27 20:41:48,896 INFO L175 Difference]: Start difference. First operand has 123 places, 107 transitions, 775 flow. Second operand 9 states and 119 transitions. [2024-06-27 20:41:48,896 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 123 transitions, 1067 flow [2024-06-27 20:41:48,913 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 123 transitions, 1027 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:48,914 INFO L231 Difference]: Finished difference. Result has 125 places, 108 transitions, 795 flow [2024-06-27 20:41:48,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=795, PETRI_PLACES=125, PETRI_TRANSITIONS=108} [2024-06-27 20:41:48,915 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 94 predicate places. [2024-06-27 20:41:48,915 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 108 transitions, 795 flow [2024-06-27 20:41:48,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:48,915 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:48,915 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 20:41:48,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-06-27 20:41:48,915 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 20:41:48,916 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:48,916 INFO L85 PathProgramCache]: Analyzing trace with hash -17634349, now seen corresponding path program 3 times [2024-06-27 20:41:48,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:48,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251553497] [2024-06-27 20:41:48,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:48,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:48,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:49,602 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 20:41:49,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:49,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251553497] [2024-06-27 20:41:49,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251553497] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:49,610 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:49,610 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:49,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885155479] [2024-06-27 20:41:49,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:49,611 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:49,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:49,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:49,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:49,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:49,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 108 transitions, 795 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:49,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:49,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:49,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:49,934 INFO L124 PetriNetUnfolderBase]: 274/533 cut-off events. [2024-06-27 20:41:49,935 INFO L125 PetriNetUnfolderBase]: For 15958/15958 co-relation queries the response was YES. [2024-06-27 20:41:49,936 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3038 conditions, 533 events. 274/533 cut-off events. For 15958/15958 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2489 event pairs, 46 based on Foata normal form. 2/534 useless extension candidates. Maximal degree in co-relation 2978. Up to 424 conditions per place. [2024-06-27 20:41:49,938 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 100 selfloop transitions, 21 changer transitions 0/125 dead transitions. [2024-06-27 20:41:49,938 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 133 places, 125 transitions, 1095 flow [2024-06-27 20:41:49,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:49,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:49,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 121 transitions. [2024-06-27 20:41:49,939 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4201388888888889 [2024-06-27 20:41:49,940 INFO L175 Difference]: Start difference. First operand has 125 places, 108 transitions, 795 flow. Second operand 9 states and 121 transitions. [2024-06-27 20:41:49,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 133 places, 125 transitions, 1095 flow [2024-06-27 20:41:49,977 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 125 transitions, 1045 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:49,979 INFO L231 Difference]: Finished difference. Result has 127 places, 109 transitions, 807 flow [2024-06-27 20:41:49,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=745, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=807, PETRI_PLACES=127, PETRI_TRANSITIONS=109} [2024-06-27 20:41:49,979 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-06-27 20:41:49,979 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 109 transitions, 807 flow [2024-06-27 20:41:49,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:49,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:49,979 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 20:41:49,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-06-27 20:41:49,980 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 20:41:49,980 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:49,980 INFO L85 PathProgramCache]: Analyzing trace with hash 1047727525, now seen corresponding path program 1 times [2024-06-27 20:41:49,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:49,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579948071] [2024-06-27 20:41:49,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:49,981 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:49,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:50,736 INFO 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 20:41:50,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:50,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579948071] [2024-06-27 20:41:50,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579948071] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:50,737 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:50,737 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:41:50,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555858469] [2024-06-27 20:41:50,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:50,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:41:50,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:50,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:41:50,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:41:50,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:50,815 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 109 transitions, 807 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:50,815 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:50,815 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:50,815 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:51,038 INFO L124 PetriNetUnfolderBase]: 272/530 cut-off events. [2024-06-27 20:41:51,039 INFO L125 PetriNetUnfolderBase]: For 15024/15024 co-relation queries the response was YES. [2024-06-27 20:41:51,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2989 conditions, 530 events. 272/530 cut-off events. For 15024/15024 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 2466 event pairs, 47 based on Foata normal form. 1/530 useless extension candidates. Maximal degree in co-relation 2928. Up to 437 conditions per place. [2024-06-27 20:41:51,042 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 98 selfloop transitions, 24 changer transitions 0/126 dead transitions. [2024-06-27 20:41:51,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 126 transitions, 1137 flow [2024-06-27 20:41:51,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:41:51,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:41:51,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 20:41:51,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 20:41:51,043 INFO L175 Difference]: Start difference. First operand has 127 places, 109 transitions, 807 flow. Second operand 10 states and 130 transitions. [2024-06-27 20:41:51,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 126 transitions, 1137 flow [2024-06-27 20:41:51,064 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 126 transitions, 1085 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:51,065 INFO L231 Difference]: Finished difference. Result has 130 places, 111 transitions, 856 flow [2024-06-27 20:41:51,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=755, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=856, PETRI_PLACES=130, PETRI_TRANSITIONS=111} [2024-06-27 20:41:51,066 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 99 predicate places. [2024-06-27 20:41:51,066 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 111 transitions, 856 flow [2024-06-27 20:41:51,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:51,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:51,066 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 20:41:51,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-06-27 20:41:51,066 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 20:41:51,066 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:51,067 INFO L85 PathProgramCache]: Analyzing trace with hash -375012047, now seen corresponding path program 4 times [2024-06-27 20:41:51,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:51,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452429199] [2024-06-27 20:41:51,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:51,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:51,749 INFO 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 20:41:51,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:51,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452429199] [2024-06-27 20:41:51,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452429199] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:51,750 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:51,750 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:51,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739802172] [2024-06-27 20:41:51,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:51,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:51,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:51,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:51,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:51,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:51,813 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 111 transitions, 856 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:51,813 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:51,813 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:51,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:52,068 INFO L124 PetriNetUnfolderBase]: 279/545 cut-off events. [2024-06-27 20:41:52,068 INFO L125 PetriNetUnfolderBase]: For 16453/16453 co-relation queries the response was YES. [2024-06-27 20:41:52,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3076 conditions, 545 events. 279/545 cut-off events. For 16453/16453 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2570 event pairs, 43 based on Foata normal form. 2/546 useless extension candidates. Maximal degree in co-relation 3014. Up to 462 conditions per place. [2024-06-27 20:41:52,071 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 107 selfloop transitions, 17 changer transitions 0/128 dead transitions. [2024-06-27 20:41:52,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 128 transitions, 1190 flow [2024-06-27 20:41:52,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:52,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:52,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 20:41:52,072 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-27 20:41:52,073 INFO L175 Difference]: Start difference. First operand has 130 places, 111 transitions, 856 flow. Second operand 9 states and 118 transitions. [2024-06-27 20:41:52,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 128 transitions, 1190 flow [2024-06-27 20:41:52,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 128 transitions, 1105 flow, removed 20 selfloop flow, removed 8 redundant places. [2024-06-27 20:41:52,098 INFO L231 Difference]: Finished difference. Result has 132 places, 115 transitions, 868 flow [2024-06-27 20:41:52,098 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=771, PETRI_DIFFERENCE_MINUEND_PLACES=122, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=868, PETRI_PLACES=132, PETRI_TRANSITIONS=115} [2024-06-27 20:41:52,098 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-06-27 20:41:52,098 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 115 transitions, 868 flow [2024-06-27 20:41:52,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:52,099 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:52,099 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 20:41:52,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2024-06-27 20:41:52,099 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 20:41:52,099 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:52,099 INFO L85 PathProgramCache]: Analyzing trace with hash -380518577, now seen corresponding path program 5 times [2024-06-27 20:41:52,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:52,100 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382129250] [2024-06-27 20:41:52,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:52,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:52,779 INFO 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 20:41:52,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:52,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382129250] [2024-06-27 20:41:52,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382129250] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:52,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:52,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:52,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899389471] [2024-06-27 20:41:52,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:52,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:52,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:52,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:52,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:52,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:52,845 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 115 transitions, 868 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:52,845 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:52,845 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:52,845 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:53,100 INFO L124 PetriNetUnfolderBase]: 283/551 cut-off events. [2024-06-27 20:41:53,101 INFO L125 PetriNetUnfolderBase]: For 17364/17364 co-relation queries the response was YES. [2024-06-27 20:41:53,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3134 conditions, 551 events. 283/551 cut-off events. For 17364/17364 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2604 event pairs, 45 based on Foata normal form. 2/552 useless extension candidates. Maximal degree in co-relation 3070. Up to 470 conditions per place. [2024-06-27 20:41:53,104 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 108 selfloop transitions, 18 changer transitions 0/130 dead transitions. [2024-06-27 20:41:53,104 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 130 transitions, 1184 flow [2024-06-27 20:41:53,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:53,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:53,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 20:41:53,109 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-27 20:41:53,109 INFO L175 Difference]: Start difference. First operand has 132 places, 115 transitions, 868 flow. Second operand 9 states and 118 transitions. [2024-06-27 20:41:53,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 130 transitions, 1184 flow [2024-06-27 20:41:53,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 130 transitions, 1120 flow, removed 16 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:53,135 INFO L231 Difference]: Finished difference. Result has 135 places, 117 transitions, 874 flow [2024-06-27 20:41:53,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=874, PETRI_PLACES=135, PETRI_TRANSITIONS=117} [2024-06-27 20:41:53,136 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 104 predicate places. [2024-06-27 20:41:53,136 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 117 transitions, 874 flow [2024-06-27 20:41:53,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:53,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:53,136 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 20:41:53,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-06-27 20:41:53,136 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 20:41:53,137 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:53,137 INFO L85 PathProgramCache]: Analyzing trace with hash 951996475, now seen corresponding path program 6 times [2024-06-27 20:41:53,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:53,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801700415] [2024-06-27 20:41:53,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:53,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:53,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:53,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:53,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:53,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801700415] [2024-06-27 20:41:53,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801700415] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:53,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:53,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:53,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895988361] [2024-06-27 20:41:53,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:53,796 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:53,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:53,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:53,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:53,906 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:53,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 117 transitions, 874 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:53,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:53,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:53,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:54,132 INFO L124 PetriNetUnfolderBase]: 287/559 cut-off events. [2024-06-27 20:41:54,132 INFO L125 PetriNetUnfolderBase]: For 18143/18143 co-relation queries the response was YES. [2024-06-27 20:41:54,134 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3172 conditions, 559 events. 287/559 cut-off events. For 18143/18143 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2643 event pairs, 43 based on Foata normal form. 2/560 useless extension candidates. Maximal degree in co-relation 3107. Up to 458 conditions per place. [2024-06-27 20:41:54,135 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 108 selfloop transitions, 20 changer transitions 0/132 dead transitions. [2024-06-27 20:41:54,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 132 transitions, 1188 flow [2024-06-27 20:41:54,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:54,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:54,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-27 20:41:54,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-27 20:41:54,149 INFO L175 Difference]: Start difference. First operand has 135 places, 117 transitions, 874 flow. Second operand 9 states and 119 transitions. [2024-06-27 20:41:54,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 132 transitions, 1188 flow [2024-06-27 20:41:54,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 132 transitions, 1146 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:54,175 INFO L231 Difference]: Finished difference. Result has 139 places, 118 transitions, 898 flow [2024-06-27 20:41:54,176 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=832, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=898, PETRI_PLACES=139, PETRI_TRANSITIONS=118} [2024-06-27 20:41:54,176 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 108 predicate places. [2024-06-27 20:41:54,176 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 118 transitions, 898 flow [2024-06-27 20:41:54,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:54,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:54,177 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 20:41:54,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-06-27 20:41:54,177 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 20:41:54,177 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:54,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1159080567, now seen corresponding path program 1 times [2024-06-27 20:41:54,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:54,177 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5430783] [2024-06-27 20:41:54,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:54,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:54,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:55,111 INFO 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 20:41:55,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:55,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5430783] [2024-06-27 20:41:55,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5430783] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:55,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:55,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:41:55,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763933101] [2024-06-27 20:41:55,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:55,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:41:55,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:55,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:41:55,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:41:55,222 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:55,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 118 transitions, 898 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:55,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:55,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:55,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:55,485 INFO L124 PetriNetUnfolderBase]: 307/605 cut-off events. [2024-06-27 20:41:55,485 INFO L125 PetriNetUnfolderBase]: For 27715/27715 co-relation queries the response was YES. [2024-06-27 20:41:55,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3432 conditions, 605 events. 307/605 cut-off events. For 27715/27715 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 2931 event pairs, 49 based on Foata normal form. 12/616 useless extension candidates. Maximal degree in co-relation 3366. Up to 456 conditions per place. [2024-06-27 20:41:55,489 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 107 selfloop transitions, 22 changer transitions 7/140 dead transitions. [2024-06-27 20:41:55,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 140 transitions, 1342 flow [2024-06-27 20:41:55,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:41:55,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:41:55,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 20:41:55,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-27 20:41:55,497 INFO L175 Difference]: Start difference. First operand has 139 places, 118 transitions, 898 flow. Second operand 11 states and 147 transitions. [2024-06-27 20:41:55,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 140 transitions, 1342 flow [2024-06-27 20:41:55,524 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 140 transitions, 1286 flow, removed 9 selfloop flow, removed 7 redundant places. [2024-06-27 20:41:55,525 INFO L231 Difference]: Finished difference. Result has 143 places, 117 transitions, 905 flow [2024-06-27 20:41:55,526 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=842, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=905, PETRI_PLACES=143, PETRI_TRANSITIONS=117} [2024-06-27 20:41:55,526 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-27 20:41:55,526 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 117 transitions, 905 flow [2024-06-27 20:41:55,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:55,526 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:55,527 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 20:41:55,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-06-27 20:41:55,527 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 20:41:55,527 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:55,527 INFO L85 PathProgramCache]: Analyzing trace with hash -32575357, now seen corresponding path program 7 times [2024-06-27 20:41:55,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:55,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1846715224] [2024-06-27 20:41:55,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:55,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:55,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:56,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:41:56,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:56,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1846715224] [2024-06-27 20:41:56,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1846715224] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:56,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:56,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:56,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621139522] [2024-06-27 20:41:56,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:56,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:56,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:56,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:56,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:56,300 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:56,300 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 117 transitions, 905 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:56,300 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:56,300 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:56,300 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:56,523 INFO L124 PetriNetUnfolderBase]: 299/591 cut-off events. [2024-06-27 20:41:56,523 INFO L125 PetriNetUnfolderBase]: For 20881/20881 co-relation queries the response was YES. [2024-06-27 20:41:56,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3418 conditions, 591 events. 299/591 cut-off events. For 20881/20881 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2881 event pairs, 46 based on Foata normal form. 2/589 useless extension candidates. Maximal degree in co-relation 3351. Up to 484 conditions per place. [2024-06-27 20:41:56,527 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 100 selfloop transitions, 28 changer transitions 0/132 dead transitions. [2024-06-27 20:41:56,527 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 132 transitions, 1268 flow [2024-06-27 20:41:56,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:56,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:56,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 118 transitions. [2024-06-27 20:41:56,540 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4097222222222222 [2024-06-27 20:41:56,540 INFO L175 Difference]: Start difference. First operand has 143 places, 117 transitions, 905 flow. Second operand 9 states and 118 transitions. [2024-06-27 20:41:56,541 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 132 transitions, 1268 flow [2024-06-27 20:41:56,567 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 132 transitions, 1216 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 20:41:56,569 INFO L231 Difference]: Finished difference. Result has 144 places, 120 transitions, 973 flow [2024-06-27 20:41:56,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=853, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=973, PETRI_PLACES=144, PETRI_TRANSITIONS=120} [2024-06-27 20:41:56,573 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 113 predicate places. [2024-06-27 20:41:56,573 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 120 transitions, 973 flow [2024-06-27 20:41:56,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:56,573 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:56,573 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 20:41:56,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-06-27 20:41:56,574 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 20:41:56,574 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:56,574 INFO L85 PathProgramCache]: Analyzing trace with hash 1109756661, now seen corresponding path program 8 times [2024-06-27 20:41:56,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:56,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623729414] [2024-06-27 20:41:56,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:56,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:56,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:57,255 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 20:41:57,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:57,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623729414] [2024-06-27 20:41:57,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623729414] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:57,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:57,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:57,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767170044] [2024-06-27 20:41:57,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:57,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:57,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:57,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:57,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:57,316 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:57,316 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 120 transitions, 973 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:57,316 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:57,316 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:57,316 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:57,561 INFO L124 PetriNetUnfolderBase]: 306/604 cut-off events. [2024-06-27 20:41:57,561 INFO L125 PetriNetUnfolderBase]: For 22063/22063 co-relation queries the response was YES. [2024-06-27 20:41:57,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3554 conditions, 604 events. 306/604 cut-off events. For 22063/22063 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 2965 event pairs, 46 based on Foata normal form. 2/602 useless extension candidates. Maximal degree in co-relation 3485. Up to 496 conditions per place. [2024-06-27 20:41:57,565 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 103 selfloop transitions, 28 changer transitions 0/135 dead transitions. [2024-06-27 20:41:57,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 152 places, 135 transitions, 1333 flow [2024-06-27 20:41:57,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:57,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:57,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 20:41:57,569 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 20:41:57,569 INFO L175 Difference]: Start difference. First operand has 144 places, 120 transitions, 973 flow. Second operand 9 states and 120 transitions. [2024-06-27 20:41:57,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 152 places, 135 transitions, 1333 flow [2024-06-27 20:41:57,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 135 transitions, 1235 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:57,600 INFO L231 Difference]: Finished difference. Result has 148 places, 124 transitions, 1012 flow [2024-06-27 20:41:57,601 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=879, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1012, PETRI_PLACES=148, PETRI_TRANSITIONS=124} [2024-06-27 20:41:57,601 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 117 predicate places. [2024-06-27 20:41:57,601 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 124 transitions, 1012 flow [2024-06-27 20:41:57,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:57,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:57,601 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 20:41:57,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2024-06-27 20:41:57,602 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 20:41:57,602 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:57,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1477540127, now seen corresponding path program 9 times [2024-06-27 20:41:57,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:57,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101402712] [2024-06-27 20:41:57,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:57,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:57,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:58,294 INFO 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 20:41:58,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:58,295 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101402712] [2024-06-27 20:41:58,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101402712] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:58,296 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:58,296 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:58,296 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286922508] [2024-06-27 20:41:58,296 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:58,297 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:58,297 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:58,297 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:58,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:58,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:58,379 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 124 transitions, 1012 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:58,379 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:58,379 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:58,379 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:58,680 INFO L124 PetriNetUnfolderBase]: 310/612 cut-off events. [2024-06-27 20:41:58,680 INFO L125 PetriNetUnfolderBase]: For 23077/23077 co-relation queries the response was YES. [2024-06-27 20:41:58,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3617 conditions, 612 events. 310/612 cut-off events. For 23077/23077 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3005 event pairs, 48 based on Foata normal form. 2/610 useless extension candidates. Maximal degree in co-relation 3546. Up to 504 conditions per place. [2024-06-27 20:41:58,691 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 103 selfloop transitions, 30 changer transitions 0/137 dead transitions. [2024-06-27 20:41:58,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 137 transitions, 1344 flow [2024-06-27 20:41:58,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:58,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:58,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 119 transitions. [2024-06-27 20:41:58,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4131944444444444 [2024-06-27 20:41:58,696 INFO L175 Difference]: Start difference. First operand has 148 places, 124 transitions, 1012 flow. Second operand 9 states and 119 transitions. [2024-06-27 20:41:58,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 137 transitions, 1344 flow [2024-06-27 20:41:58,731 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 137 transitions, 1244 flow, removed 23 selfloop flow, removed 6 redundant places. [2024-06-27 20:41:58,733 INFO L231 Difference]: Finished difference. Result has 151 places, 126 transitions, 1014 flow [2024-06-27 20:41:58,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=914, PETRI_DIFFERENCE_MINUEND_PLACES=142, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1014, PETRI_PLACES=151, PETRI_TRANSITIONS=126} [2024-06-27 20:41:58,733 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 120 predicate places. [2024-06-27 20:41:58,733 INFO L495 AbstractCegarLoop]: Abstraction has has 151 places, 126 transitions, 1014 flow [2024-06-27 20:41:58,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:58,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:58,734 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 20:41:58,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-06-27 20:41:58,734 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 20:41:58,734 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:58,734 INFO L85 PathProgramCache]: Analyzing trace with hash -1477543847, now seen corresponding path program 10 times [2024-06-27 20:41:58,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:58,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [224348849] [2024-06-27 20:41:58,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:58,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:41:59,403 INFO 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 20:41:59,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:41:59,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [224348849] [2024-06-27 20:41:59,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [224348849] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:41:59,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:41:59,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-06-27 20:41:59,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908973208] [2024-06-27 20:41:59,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:41:59,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-06-27 20:41:59,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:41:59,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-06-27 20:41:59,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-06-27 20:41:59,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:41:59,480 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 126 transitions, 1014 flow. Second operand has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:59,480 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:41:59,480 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:41:59,480 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:41:59,698 INFO L124 PetriNetUnfolderBase]: 307/607 cut-off events. [2024-06-27 20:41:59,698 INFO L125 PetriNetUnfolderBase]: For 21543/21543 co-relation queries the response was YES. [2024-06-27 20:41:59,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3455 conditions, 607 events. 307/607 cut-off events. For 21543/21543 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2993 event pairs, 45 based on Foata normal form. 2/605 useless extension candidates. Maximal degree in co-relation 3383. Up to 473 conditions per place. [2024-06-27 20:41:59,702 INFO L140 encePairwiseOnDemand]: 23/32 looper letters, 101 selfloop transitions, 33 changer transitions 0/138 dead transitions. [2024-06-27 20:41:59,702 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 138 transitions, 1314 flow [2024-06-27 20:41:59,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-06-27 20:41:59,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-06-27 20:41:59,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2024-06-27 20:41:59,703 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 20:41:59,703 INFO L175 Difference]: Start difference. First operand has 151 places, 126 transitions, 1014 flow. Second operand 9 states and 120 transitions. [2024-06-27 20:41:59,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 159 places, 138 transitions, 1314 flow [2024-06-27 20:41:59,737 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 138 transitions, 1242 flow, removed 12 selfloop flow, removed 5 redundant places. [2024-06-27 20:41:59,738 INFO L231 Difference]: Finished difference. Result has 155 places, 126 transitions, 1012 flow [2024-06-27 20:41:59,739 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=942, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1012, PETRI_PLACES=155, PETRI_TRANSITIONS=126} [2024-06-27 20:41:59,739 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 124 predicate places. [2024-06-27 20:41:59,739 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 126 transitions, 1012 flow [2024-06-27 20:41:59,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.3) internal successors, (93), 10 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:41:59,739 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:41:59,739 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 20:41:59,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-06-27 20:41:59,739 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 20:41:59,739 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:41:59,740 INFO L85 PathProgramCache]: Analyzing trace with hash -1708795163, now seen corresponding path program 2 times [2024-06-27 20:41:59,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:41:59,740 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293287754] [2024-06-27 20:41:59,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:41:59,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:41:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:00,458 INFO 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 20:42:00,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:00,459 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293287754] [2024-06-27 20:42:00,459 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293287754] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:00,459 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:00,459 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:00,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146141102] [2024-06-27 20:42:00,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:00,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:00,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:00,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:00,459 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:00,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:00,551 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 126 transitions, 1012 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:00,551 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:00,551 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:00,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:00,789 INFO L124 PetriNetUnfolderBase]: 327/651 cut-off events. [2024-06-27 20:42:00,789 INFO L125 PetriNetUnfolderBase]: For 33139/33139 co-relation queries the response was YES. [2024-06-27 20:42:00,791 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3705 conditions, 651 events. 327/651 cut-off events. For 33139/33139 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 3267 event pairs, 51 based on Foata normal form. 12/659 useless extension candidates. Maximal degree in co-relation 3632. Up to 417 conditions per place. [2024-06-27 20:42:00,793 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 97 selfloop transitions, 40 changer transitions 7/148 dead transitions. [2024-06-27 20:42:00,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 148 transitions, 1540 flow [2024-06-27 20:42:00,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:00,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:00,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 153 transitions. [2024-06-27 20:42:00,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4346590909090909 [2024-06-27 20:42:00,794 INFO L175 Difference]: Start difference. First operand has 155 places, 126 transitions, 1012 flow. Second operand 11 states and 153 transitions. [2024-06-27 20:42:00,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 148 transitions, 1540 flow [2024-06-27 20:42:00,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 148 transitions, 1419 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:00,835 INFO L231 Difference]: Finished difference. Result has 158 places, 125 transitions, 996 flow [2024-06-27 20:42:00,836 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=891, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=996, PETRI_PLACES=158, PETRI_TRANSITIONS=125} [2024-06-27 20:42:00,836 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-27 20:42:00,836 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 125 transitions, 996 flow [2024-06-27 20:42:00,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:00,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:00,836 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 20:42:00,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2024-06-27 20:42:00,836 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 20:42:00,837 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:00,837 INFO L85 PathProgramCache]: Analyzing trace with hash -24940925, now seen corresponding path program 3 times [2024-06-27 20:42:00,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:00,837 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540788575] [2024-06-27 20:42:00,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:00,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:01,568 INFO 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 20:42:01,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:01,568 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540788575] [2024-06-27 20:42:01,568 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540788575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:01,568 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:01,568 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:01,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704061304] [2024-06-27 20:42:01,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:01,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:01,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:01,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:01,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:01,651 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:01,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 125 transitions, 996 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:01,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:01,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:01,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:01,890 INFO L124 PetriNetUnfolderBase]: 335/677 cut-off events. [2024-06-27 20:42:01,890 INFO L125 PetriNetUnfolderBase]: For 35426/35426 co-relation queries the response was YES. [2024-06-27 20:42:01,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3863 conditions, 677 events. 335/677 cut-off events. For 35426/35426 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 3462 event pairs, 55 based on Foata normal form. 12/685 useless extension candidates. Maximal degree in co-relation 3789. Up to 441 conditions per place. [2024-06-27 20:42:01,894 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 96 selfloop transitions, 40 changer transitions 7/147 dead transitions. [2024-06-27 20:42:01,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 147 transitions, 1532 flow [2024-06-27 20:42:01,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:01,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:01,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 152 transitions. [2024-06-27 20:42:01,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2024-06-27 20:42:01,895 INFO L175 Difference]: Start difference. First operand has 158 places, 125 transitions, 996 flow. Second operand 11 states and 152 transitions. [2024-06-27 20:42:01,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 147 transitions, 1532 flow [2024-06-27 20:42:01,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 147 transitions, 1415 flow, removed 10 selfloop flow, removed 10 redundant places. [2024-06-27 20:42:01,941 INFO L231 Difference]: Finished difference. Result has 159 places, 124 transitions, 988 flow [2024-06-27 20:42:01,941 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=148, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=988, PETRI_PLACES=159, PETRI_TRANSITIONS=124} [2024-06-27 20:42:01,941 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 128 predicate places. [2024-06-27 20:42:01,941 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 124 transitions, 988 flow [2024-06-27 20:42:01,941 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:01,941 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:01,941 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 20:42:01,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-06-27 20:42:01,942 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 20:42:01,942 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:01,942 INFO L85 PathProgramCache]: Analyzing trace with hash 548347523, now seen corresponding path program 4 times [2024-06-27 20:42:01,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:01,942 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025431160] [2024-06-27 20:42:01,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:01,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:02,723 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 20:42:02,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:02,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025431160] [2024-06-27 20:42:02,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025431160] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:02,724 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:02,724 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:02,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628527711] [2024-06-27 20:42:02,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:02,724 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:02,724 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:02,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:02,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:02,835 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:02,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 124 transitions, 988 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:02,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:02,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:02,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:03,083 INFO L124 PetriNetUnfolderBase]: 363/744 cut-off events. [2024-06-27 20:42:03,084 INFO L125 PetriNetUnfolderBase]: For 40160/40162 co-relation queries the response was YES. [2024-06-27 20:42:03,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4800 conditions, 744 events. 363/744 cut-off events. For 40160/40162 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3889 event pairs, 71 based on Foata normal form. 2/745 useless extension candidates. Maximal degree in co-relation 4726. Up to 568 conditions per place. [2024-06-27 20:42:03,088 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 119 selfloop transitions, 23 changer transitions 0/146 dead transitions. [2024-06-27 20:42:03,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 146 transitions, 1564 flow [2024-06-27 20:42:03,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:42:03,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:42:03,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-27 20:42:03,089 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-27 20:42:03,089 INFO L175 Difference]: Start difference. First operand has 159 places, 124 transitions, 988 flow. Second operand 12 states and 154 transitions. [2024-06-27 20:42:03,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 146 transitions, 1564 flow [2024-06-27 20:42:03,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 146 transitions, 1468 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:03,145 INFO L231 Difference]: Finished difference. Result has 163 places, 126 transitions, 1017 flow [2024-06-27 20:42:03,145 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=892, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1017, PETRI_PLACES=163, PETRI_TRANSITIONS=126} [2024-06-27 20:42:03,146 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 132 predicate places. [2024-06-27 20:42:03,146 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 126 transitions, 1017 flow [2024-06-27 20:42:03,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:03,146 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:03,146 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 20:42:03,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-06-27 20:42:03,146 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 20:42:03,146 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:03,146 INFO L85 PathProgramCache]: Analyzing trace with hash 223220453, now seen corresponding path program 5 times [2024-06-27 20:42:03,146 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:03,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378723891] [2024-06-27 20:42:03,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:03,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:03,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:03,888 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:03,888 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378723891] [2024-06-27 20:42:03,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378723891] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:03,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:03,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:03,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310181034] [2024-06-27 20:42:03,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:03,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:03,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:03,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:03,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:03,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:03,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 126 transitions, 1017 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:03,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:03,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:03,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:04,267 INFO L124 PetriNetUnfolderBase]: 376/768 cut-off events. [2024-06-27 20:42:04,267 INFO L125 PetriNetUnfolderBase]: For 51410/51410 co-relation queries the response was YES. [2024-06-27 20:42:04,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4853 conditions, 768 events. 376/768 cut-off events. For 51410/51410 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 4071 event pairs, 72 based on Foata normal form. 12/776 useless extension candidates. Maximal degree in co-relation 4777. Up to 532 conditions per place. [2024-06-27 20:42:04,272 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 90 selfloop transitions, 45 changer transitions 7/146 dead transitions. [2024-06-27 20:42:04,272 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 173 places, 146 transitions, 1507 flow [2024-06-27 20:42:04,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:04,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:04,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 151 transitions. [2024-06-27 20:42:04,272 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4289772727272727 [2024-06-27 20:42:04,272 INFO L175 Difference]: Start difference. First operand has 163 places, 126 transitions, 1017 flow. Second operand 11 states and 151 transitions. [2024-06-27 20:42:04,273 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 173 places, 146 transitions, 1507 flow [2024-06-27 20:42:04,330 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 146 transitions, 1428 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:04,332 INFO L231 Difference]: Finished difference. Result has 165 places, 125 transitions, 1061 flow [2024-06-27 20:42:04,332 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=938, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=126, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1061, PETRI_PLACES=165, PETRI_TRANSITIONS=125} [2024-06-27 20:42:04,332 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 134 predicate places. [2024-06-27 20:42:04,332 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 125 transitions, 1061 flow [2024-06-27 20:42:04,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:04,332 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:04,332 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 20:42:04,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-06-27 20:42:04,333 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 20:42:04,333 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:04,333 INFO L85 PathProgramCache]: Analyzing trace with hash 536919683, now seen corresponding path program 6 times [2024-06-27 20:42:04,333 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:04,333 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1791242595] [2024-06-27 20:42:04,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:04,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:04,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:05,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:05,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:05,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1791242595] [2024-06-27 20:42:05,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1791242595] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:05,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:05,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:05,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571722787] [2024-06-27 20:42:05,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:05,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:05,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:05,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:05,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:05,233 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:05,234 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 125 transitions, 1061 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:05,234 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:05,234 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:05,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:05,513 INFO L124 PetriNetUnfolderBase]: 355/736 cut-off events. [2024-06-27 20:42:05,513 INFO L125 PetriNetUnfolderBase]: For 40950/40952 co-relation queries the response was YES. [2024-06-27 20:42:05,516 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4227 conditions, 736 events. 355/736 cut-off events. For 40950/40952 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3915 event pairs, 67 based on Foata normal form. 12/747 useless extension candidates. Maximal degree in co-relation 4150. Up to 612 conditions per place. [2024-06-27 20:42:05,517 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 116 selfloop transitions, 16 changer transitions 7/143 dead transitions. [2024-06-27 20:42:05,517 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 143 transitions, 1491 flow [2024-06-27 20:42:05,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:05,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:05,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 20:42:05,518 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-27 20:42:05,518 INFO L175 Difference]: Start difference. First operand has 165 places, 125 transitions, 1061 flow. Second operand 11 states and 141 transitions. [2024-06-27 20:42:05,518 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 143 transitions, 1491 flow [2024-06-27 20:42:05,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 143 transitions, 1379 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:05,566 INFO L231 Difference]: Finished difference. Result has 167 places, 124 transitions, 994 flow [2024-06-27 20:42:05,566 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=949, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=994, PETRI_PLACES=167, PETRI_TRANSITIONS=124} [2024-06-27 20:42:05,566 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 136 predicate places. [2024-06-27 20:42:05,566 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 124 transitions, 994 flow [2024-06-27 20:42:05,566 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:05,566 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:05,567 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 20:42:05,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-06-27 20:42:05,567 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 20:42:05,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:05,567 INFO L85 PathProgramCache]: Analyzing trace with hash 547961573, now seen corresponding path program 7 times [2024-06-27 20:42:05,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:05,567 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693899669] [2024-06-27 20:42:05,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:05,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:05,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:06,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:06,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:06,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693899669] [2024-06-27 20:42:06,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693899669] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:06,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:06,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:06,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1920979528] [2024-06-27 20:42:06,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:06,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:06,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:06,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:06,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:06,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:06,508 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 124 transitions, 994 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:06,508 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:06,508 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:06,508 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:06,808 INFO L124 PetriNetUnfolderBase]: 340/709 cut-off events. [2024-06-27 20:42:06,808 INFO L125 PetriNetUnfolderBase]: For 26725/26727 co-relation queries the response was YES. [2024-06-27 20:42:06,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3906 conditions, 709 events. 340/709 cut-off events. For 26725/26727 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 3750 event pairs, 64 based on Foata normal form. 2/710 useless extension candidates. Maximal degree in co-relation 3828. Up to 595 conditions per place. [2024-06-27 20:42:06,813 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 112 selfloop transitions, 21 changer transitions 3/140 dead transitions. [2024-06-27 20:42:06,813 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 140 transitions, 1372 flow [2024-06-27 20:42:06,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:42:06,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:42:06,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-27 20:42:06,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-27 20:42:06,814 INFO L175 Difference]: Start difference. First operand has 167 places, 124 transitions, 994 flow. Second operand 12 states and 148 transitions. [2024-06-27 20:42:06,814 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 140 transitions, 1372 flow [2024-06-27 20:42:06,856 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 169 places, 140 transitions, 1326 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:06,858 INFO L231 Difference]: Finished difference. Result has 170 places, 124 transitions, 996 flow [2024-06-27 20:42:06,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=948, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=996, PETRI_PLACES=170, PETRI_TRANSITIONS=124} [2024-06-27 20:42:06,858 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 139 predicate places. [2024-06-27 20:42:06,858 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 124 transitions, 996 flow [2024-06-27 20:42:06,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:06,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:06,859 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 20:42:06,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2024-06-27 20:42:06,859 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 20:42:06,859 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:06,859 INFO L85 PathProgramCache]: Analyzing trace with hash -782491597, now seen corresponding path program 1 times [2024-06-27 20:42:06,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:06,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336890343] [2024-06-27 20:42:06,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:06,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:07,558 INFO 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 20:42:07,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:07,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336890343] [2024-06-27 20:42:07,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336890343] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:07,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:07,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:07,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612333742] [2024-06-27 20:42:07,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:07,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:07,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:07,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:07,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:07,655 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:07,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 124 transitions, 996 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:07,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:07,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:07,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:07,924 INFO L124 PetriNetUnfolderBase]: 344/718 cut-off events. [2024-06-27 20:42:07,924 INFO L125 PetriNetUnfolderBase]: For 27305/27305 co-relation queries the response was YES. [2024-06-27 20:42:07,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3941 conditions, 718 events. 344/718 cut-off events. For 27305/27305 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 3811 event pairs, 43 based on Foata normal form. 2/719 useless extension candidates. Maximal degree in co-relation 3862. Up to 592 conditions per place. [2024-06-27 20:42:07,929 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 122 selfloop transitions, 18 changer transitions 0/144 dead transitions. [2024-06-27 20:42:07,929 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 179 places, 144 transitions, 1334 flow [2024-06-27 20:42:07,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:07,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:07,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 20:42:07,930 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-27 20:42:07,930 INFO L175 Difference]: Start difference. First operand has 170 places, 124 transitions, 996 flow. Second operand 10 states and 129 transitions. [2024-06-27 20:42:07,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 179 places, 144 transitions, 1334 flow [2024-06-27 20:42:07,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 168 places, 144 transitions, 1288 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-06-27 20:42:07,977 INFO L231 Difference]: Finished difference. Result has 169 places, 125 transitions, 1000 flow [2024-06-27 20:42:07,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=950, PETRI_DIFFERENCE_MINUEND_PLACES=159, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1000, PETRI_PLACES=169, PETRI_TRANSITIONS=125} [2024-06-27 20:42:07,977 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 138 predicate places. [2024-06-27 20:42:07,978 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 125 transitions, 1000 flow [2024-06-27 20:42:07,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:07,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:07,978 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 20:42:07,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-06-27 20:42:07,978 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 20:42:07,978 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:07,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1880368649, now seen corresponding path program 2 times [2024-06-27 20:42:07,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:07,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886092922] [2024-06-27 20:42:07,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:07,978 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:07,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:08,808 INFO 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 20:42:08,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:08,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886092922] [2024-06-27 20:42:08,809 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886092922] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:08,809 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:08,809 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:08,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508824300] [2024-06-27 20:42:08,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:08,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:08,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:08,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:08,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:08,907 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:08,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 125 transitions, 1000 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:08,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:08,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:08,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:09,155 INFO L124 PetriNetUnfolderBase]: 355/739 cut-off events. [2024-06-27 20:42:09,155 INFO L125 PetriNetUnfolderBase]: For 30124/30124 co-relation queries the response was YES. [2024-06-27 20:42:09,158 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4141 conditions, 739 events. 355/739 cut-off events. For 30124/30124 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3957 event pairs, 62 based on Foata normal form. 2/740 useless extension candidates. Maximal degree in co-relation 4061. Up to 622 conditions per place. [2024-06-27 20:42:09,159 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 117 selfloop transitions, 24 changer transitions 0/145 dead transitions. [2024-06-27 20:42:09,160 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 178 places, 145 transitions, 1456 flow [2024-06-27 20:42:09,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:09,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:09,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 20:42:09,160 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-27 20:42:09,160 INFO L175 Difference]: Start difference. First operand has 169 places, 125 transitions, 1000 flow. Second operand 10 states and 133 transitions. [2024-06-27 20:42:09,160 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 178 places, 145 transitions, 1456 flow [2024-06-27 20:42:09,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 145 transitions, 1416 flow, removed 3 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:09,212 INFO L231 Difference]: Finished difference. Result has 171 places, 127 transitions, 1034 flow [2024-06-27 20:42:09,212 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1034, PETRI_PLACES=171, PETRI_TRANSITIONS=127} [2024-06-27 20:42:09,212 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 140 predicate places. [2024-06-27 20:42:09,213 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 127 transitions, 1034 flow [2024-06-27 20:42:09,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:09,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:09,213 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 20:42:09,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2024-06-27 20:42:09,213 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 20:42:09,213 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:09,214 INFO L85 PathProgramCache]: Analyzing trace with hash 522613077, now seen corresponding path program 3 times [2024-06-27 20:42:09,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:09,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064465266] [2024-06-27 20:42:09,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:09,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:09,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:09,970 INFO 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 20:42:09,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:09,971 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064465266] [2024-06-27 20:42:09,971 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064465266] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:09,971 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:09,971 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:09,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79314088] [2024-06-27 20:42:09,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:09,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:09,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:09,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:09,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:10,059 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:10,059 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 127 transitions, 1034 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:10,059 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:10,059 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:10,059 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:10,337 INFO L124 PetriNetUnfolderBase]: 352/734 cut-off events. [2024-06-27 20:42:10,337 INFO L125 PetriNetUnfolderBase]: For 28371/28371 co-relation queries the response was YES. [2024-06-27 20:42:10,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4043 conditions, 734 events. 352/734 cut-off events. For 28371/28371 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3916 event pairs, 63 based on Foata normal form. 2/735 useless extension candidates. Maximal degree in co-relation 3962. Up to 634 conditions per place. [2024-06-27 20:42:10,342 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 116 selfloop transitions, 23 changer transitions 0/143 dead transitions. [2024-06-27 20:42:10,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 180 places, 143 transitions, 1356 flow [2024-06-27 20:42:10,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:10,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:10,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 20:42:10,342 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 20:42:10,343 INFO L175 Difference]: Start difference. First operand has 171 places, 127 transitions, 1034 flow. Second operand 10 states and 130 transitions. [2024-06-27 20:42:10,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 180 places, 143 transitions, 1356 flow [2024-06-27 20:42:10,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 143 transitions, 1310 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-06-27 20:42:10,394 INFO L231 Difference]: Finished difference. Result has 175 places, 127 transitions, 1038 flow [2024-06-27 20:42:10,394 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=988, PETRI_DIFFERENCE_MINUEND_PLACES=165, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1038, PETRI_PLACES=175, PETRI_TRANSITIONS=127} [2024-06-27 20:42:10,394 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 144 predicate places. [2024-06-27 20:42:10,394 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 127 transitions, 1038 flow [2024-06-27 20:42:10,394 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:10,394 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:10,394 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:10,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2024-06-27 20:42:10,395 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 20:42:10,395 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:10,395 INFO L85 PathProgramCache]: Analyzing trace with hash 517851477, now seen corresponding path program 4 times [2024-06-27 20:42:10,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:10,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595143378] [2024-06-27 20:42:10,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:10,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:10,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:11,129 INFO 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 20:42:11,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:11,129 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595143378] [2024-06-27 20:42:11,129 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595143378] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:11,129 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:11,129 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:11,129 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899334073] [2024-06-27 20:42:11,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:11,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:11,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:11,130 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:11,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:11,214 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:11,214 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 127 transitions, 1038 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:11,214 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:11,214 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:11,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:11,441 INFO L124 PetriNetUnfolderBase]: 356/742 cut-off events. [2024-06-27 20:42:11,442 INFO L125 PetriNetUnfolderBase]: For 29086/29086 co-relation queries the response was YES. [2024-06-27 20:42:11,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4099 conditions, 742 events. 356/742 cut-off events. For 29086/29086 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3984 event pairs, 61 based on Foata normal form. 2/743 useless extension candidates. Maximal degree in co-relation 4016. Up to 604 conditions per place. [2024-06-27 20:42:11,446 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 24 changer transitions 0/146 dead transitions. [2024-06-27 20:42:11,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 146 transitions, 1382 flow [2024-06-27 20:42:11,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:11,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:11,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-27 20:42:11,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-27 20:42:11,447 INFO L175 Difference]: Start difference. First operand has 175 places, 127 transitions, 1038 flow. Second operand 10 states and 134 transitions. [2024-06-27 20:42:11,447 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 146 transitions, 1382 flow [2024-06-27 20:42:11,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 175 places, 146 transitions, 1334 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:11,501 INFO L231 Difference]: Finished difference. Result has 176 places, 128 transitions, 1056 flow [2024-06-27 20:42:11,501 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=990, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1056, PETRI_PLACES=176, PETRI_TRANSITIONS=128} [2024-06-27 20:42:11,501 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 145 predicate places. [2024-06-27 20:42:11,502 INFO L495 AbstractCegarLoop]: Abstraction has has 176 places, 128 transitions, 1056 flow [2024-06-27 20:42:11,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:11,502 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:11,502 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 20:42:11,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-06-27 20:42:11,502 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 20:42:11,502 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:11,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1967815507, now seen corresponding path program 1 times [2024-06-27 20:42:11,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:11,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819519170] [2024-06-27 20:42:11,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:11,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:11,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:12,454 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 20:42:12,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:12,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819519170] [2024-06-27 20:42:12,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1819519170] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:12,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:12,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:12,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526998455] [2024-06-27 20:42:12,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:12,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:12,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:12,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:12,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:12,601 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:12,602 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 176 places, 128 transitions, 1056 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:12,602 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:12,602 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:12,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:12,882 INFO L124 PetriNetUnfolderBase]: 359/749 cut-off events. [2024-06-27 20:42:12,882 INFO L125 PetriNetUnfolderBase]: For 28688/28688 co-relation queries the response was YES. [2024-06-27 20:42:12,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4191 conditions, 749 events. 359/749 cut-off events. For 28688/28688 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 4029 event pairs, 64 based on Foata normal form. 1/749 useless extension candidates. Maximal degree in co-relation 4107. Up to 647 conditions per place. [2024-06-27 20:42:12,887 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 116 selfloop transitions, 26 changer transitions 0/146 dead transitions. [2024-06-27 20:42:12,887 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 146 transitions, 1436 flow [2024-06-27 20:42:12,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:12,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:12,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 20:42:12,888 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-27 20:42:12,888 INFO L175 Difference]: Start difference. First operand has 176 places, 128 transitions, 1056 flow. Second operand 11 states and 141 transitions. [2024-06-27 20:42:12,888 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 146 transitions, 1436 flow [2024-06-27 20:42:12,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 146 transitions, 1380 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:12,948 INFO L231 Difference]: Finished difference. Result has 179 places, 130 transitions, 1113 flow [2024-06-27 20:42:12,948 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1000, PETRI_DIFFERENCE_MINUEND_PLACES=168, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1113, PETRI_PLACES=179, PETRI_TRANSITIONS=130} [2024-06-27 20:42:12,949 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 148 predicate places. [2024-06-27 20:42:12,949 INFO L495 AbstractCegarLoop]: Abstraction has has 179 places, 130 transitions, 1113 flow [2024-06-27 20:42:12,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:12,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:12,949 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 20:42:12,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-06-27 20:42:12,949 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 20:42:12,949 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:12,949 INFO L85 PathProgramCache]: Analyzing trace with hash -178705801, now seen corresponding path program 5 times [2024-06-27 20:42:12,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:12,950 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992741125] [2024-06-27 20:42:12,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:12,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:13,698 INFO 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 20:42:13,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:13,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992741125] [2024-06-27 20:42:13,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992741125] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:13,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:13,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:13,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809438027] [2024-06-27 20:42:13,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:13,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:13,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:13,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:13,699 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:13,788 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:13,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 179 places, 130 transitions, 1113 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:13,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:13,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:13,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:14,045 INFO L124 PetriNetUnfolderBase]: 373/777 cut-off events. [2024-06-27 20:42:14,045 INFO L125 PetriNetUnfolderBase]: For 34690/34690 co-relation queries the response was YES. [2024-06-27 20:42:14,048 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4465 conditions, 777 events. 373/777 cut-off events. For 34690/34690 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 4218 event pairs, 65 based on Foata normal form. 2/778 useless extension candidates. Maximal degree in co-relation 4380. Up to 660 conditions per place. [2024-06-27 20:42:14,050 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 125 selfloop transitions, 21 changer transitions 2/152 dead transitions. [2024-06-27 20:42:14,050 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 152 transitions, 1651 flow [2024-06-27 20:42:14,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:14,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:14,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 134 transitions. [2024-06-27 20:42:14,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41875 [2024-06-27 20:42:14,051 INFO L175 Difference]: Start difference. First operand has 179 places, 130 transitions, 1113 flow. Second operand 10 states and 134 transitions. [2024-06-27 20:42:14,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 152 transitions, 1651 flow [2024-06-27 20:42:14,116 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 179 places, 152 transitions, 1554 flow, removed 24 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:14,118 INFO L231 Difference]: Finished difference. Result has 181 places, 134 transitions, 1144 flow [2024-06-27 20:42:14,118 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1016, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1144, PETRI_PLACES=181, PETRI_TRANSITIONS=134} [2024-06-27 20:42:14,118 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 150 predicate places. [2024-06-27 20:42:14,118 INFO L495 AbstractCegarLoop]: Abstraction has has 181 places, 134 transitions, 1144 flow [2024-06-27 20:42:14,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:14,119 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:14,119 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 20:42:14,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-06-27 20:42:14,119 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 20:42:14,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:14,119 INFO L85 PathProgramCache]: Analyzing trace with hash -548117791, now seen corresponding path program 6 times [2024-06-27 20:42:14,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:14,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451499446] [2024-06-27 20:42:14,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:14,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:14,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:14,820 INFO 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 20:42:14,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:14,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451499446] [2024-06-27 20:42:14,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1451499446] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:14,820 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:14,820 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:14,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748267503] [2024-06-27 20:42:14,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:14,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:14,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:14,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:14,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:14,898 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:14,898 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 181 places, 134 transitions, 1144 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:14,898 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:14,898 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:14,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:15,210 INFO L124 PetriNetUnfolderBase]: 366/768 cut-off events. [2024-06-27 20:42:15,210 INFO L125 PetriNetUnfolderBase]: For 32921/32921 co-relation queries the response was YES. [2024-06-27 20:42:15,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4303 conditions, 768 events. 366/768 cut-off events. For 32921/32921 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4190 event pairs, 64 based on Foata normal form. 2/769 useless extension candidates. Maximal degree in co-relation 4216. Up to 668 conditions per place. [2024-06-27 20:42:15,214 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 124 selfloop transitions, 20 changer transitions 0/148 dead transitions. [2024-06-27 20:42:15,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 190 places, 148 transitions, 1470 flow [2024-06-27 20:42:15,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:15,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:15,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 20:42:15,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-27 20:42:15,215 INFO L175 Difference]: Start difference. First operand has 181 places, 134 transitions, 1144 flow. Second operand 10 states and 129 transitions. [2024-06-27 20:42:15,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 190 places, 148 transitions, 1470 flow [2024-06-27 20:42:15,275 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 148 transitions, 1402 flow, removed 29 selfloop flow, removed 3 redundant places. [2024-06-27 20:42:15,276 INFO L231 Difference]: Finished difference. Result has 188 places, 134 transitions, 1120 flow [2024-06-27 20:42:15,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1076, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1120, PETRI_PLACES=188, PETRI_TRANSITIONS=134} [2024-06-27 20:42:15,277 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-06-27 20:42:15,277 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 134 transitions, 1120 flow [2024-06-27 20:42:15,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:15,277 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:15,277 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 20:42:15,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-06-27 20:42:15,278 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 20:42:15,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:15,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1052861023, now seen corresponding path program 7 times [2024-06-27 20:42:15,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:15,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1136895002] [2024-06-27 20:42:15,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:15,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:15,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:15,988 INFO 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 20:42:15,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:15,988 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1136895002] [2024-06-27 20:42:15,988 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1136895002] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:15,988 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:15,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:15,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1834220857] [2024-06-27 20:42:15,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:15,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:15,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:15,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:15,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:16,103 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:16,103 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 134 transitions, 1120 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:16,103 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:16,103 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:16,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:16,379 INFO L124 PetriNetUnfolderBase]: 371/781 cut-off events. [2024-06-27 20:42:16,379 INFO L125 PetriNetUnfolderBase]: For 33091/33091 co-relation queries the response was YES. [2024-06-27 20:42:16,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4328 conditions, 781 events. 371/781 cut-off events. For 33091/33091 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 4287 event pairs, 66 based on Foata normal form. 2/782 useless extension candidates. Maximal degree in co-relation 4239. Up to 678 conditions per place. [2024-06-27 20:42:16,384 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 125 selfloop transitions, 21 changer transitions 0/150 dead transitions. [2024-06-27 20:42:16,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 150 transitions, 1476 flow [2024-06-27 20:42:16,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:16,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:16,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 20:42:16,385 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-27 20:42:16,385 INFO L175 Difference]: Start difference. First operand has 188 places, 134 transitions, 1120 flow. Second operand 10 states and 129 transitions. [2024-06-27 20:42:16,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 150 transitions, 1476 flow [2024-06-27 20:42:16,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 188 places, 150 transitions, 1431 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:16,447 INFO L231 Difference]: Finished difference. Result has 189 places, 136 transitions, 1149 flow [2024-06-27 20:42:16,447 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1077, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1149, PETRI_PLACES=189, PETRI_TRANSITIONS=136} [2024-06-27 20:42:16,447 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 158 predicate places. [2024-06-27 20:42:16,447 INFO L495 AbstractCegarLoop]: Abstraction has has 189 places, 136 transitions, 1149 flow [2024-06-27 20:42:16,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:16,448 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:16,448 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 20:42:16,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-06-27 20:42:16,448 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 20:42:16,448 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:16,448 INFO L85 PathProgramCache]: Analyzing trace with hash -50782877, now seen corresponding path program 8 times [2024-06-27 20:42:16,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:16,449 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775088024] [2024-06-27 20:42:16,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:16,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:16,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:17,164 INFO 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 20:42:17,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:17,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775088024] [2024-06-27 20:42:17,164 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775088024] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:17,164 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:17,164 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:17,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [468736745] [2024-06-27 20:42:17,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:17,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:17,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:17,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:17,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:17,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:17,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 189 places, 136 transitions, 1149 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:17,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:17,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:17,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:17,532 INFO L124 PetriNetUnfolderBase]: 382/802 cut-off events. [2024-06-27 20:42:17,532 INFO L125 PetriNetUnfolderBase]: For 37762/37762 co-relation queries the response was YES. [2024-06-27 20:42:17,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4592 conditions, 802 events. 382/802 cut-off events. For 37762/37762 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4447 event pairs, 67 based on Foata normal form. 2/803 useless extension candidates. Maximal degree in co-relation 4502. Up to 676 conditions per place. [2024-06-27 20:42:17,537 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 127 selfloop transitions, 23 changer transitions 0/154 dead transitions. [2024-06-27 20:42:17,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 154 transitions, 1647 flow [2024-06-27 20:42:17,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:17,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:17,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-27 20:42:17,538 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-27 20:42:17,538 INFO L175 Difference]: Start difference. First operand has 189 places, 136 transitions, 1149 flow. Second operand 10 states and 132 transitions. [2024-06-27 20:42:17,538 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 154 transitions, 1647 flow [2024-06-27 20:42:17,610 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 154 transitions, 1593 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-06-27 20:42:17,612 INFO L231 Difference]: Finished difference. Result has 192 places, 138 transitions, 1183 flow [2024-06-27 20:42:17,612 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=182, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=136, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1183, PETRI_PLACES=192, PETRI_TRANSITIONS=138} [2024-06-27 20:42:17,612 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 161 predicate places. [2024-06-27 20:42:17,612 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 138 transitions, 1183 flow [2024-06-27 20:42:17,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:17,613 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:17,613 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 20:42:17,613 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-06-27 20:42:17,613 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 20:42:17,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:17,613 INFO L85 PathProgramCache]: Analyzing trace with hash -824786893, now seen corresponding path program 9 times [2024-06-27 20:42:17,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:17,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357821991] [2024-06-27 20:42:17,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:17,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:18,283 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:18,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:18,283 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357821991] [2024-06-27 20:42:18,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357821991] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:18,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:18,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:18,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869849835] [2024-06-27 20:42:18,284 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:18,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:18,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:18,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:18,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:18,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:18,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 138 transitions, 1183 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:18,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:18,353 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:18,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:18,614 INFO L124 PetriNetUnfolderBase]: 379/797 cut-off events. [2024-06-27 20:42:18,615 INFO L125 PetriNetUnfolderBase]: For 35060/35060 co-relation queries the response was YES. [2024-06-27 20:42:18,618 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4451 conditions, 797 events. 379/797 cut-off events. For 35060/35060 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 4419 event pairs, 68 based on Foata normal form. 2/798 useless extension candidates. Maximal degree in co-relation 4361. Up to 694 conditions per place. [2024-06-27 20:42:18,620 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 126 selfloop transitions, 22 changer transitions 0/152 dead transitions. [2024-06-27 20:42:18,620 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 152 transitions, 1517 flow [2024-06-27 20:42:18,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:18,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:18,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-06-27 20:42:18,621 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.403125 [2024-06-27 20:42:18,621 INFO L175 Difference]: Start difference. First operand has 192 places, 138 transitions, 1183 flow. Second operand 10 states and 129 transitions. [2024-06-27 20:42:18,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 152 transitions, 1517 flow [2024-06-27 20:42:18,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 152 transitions, 1460 flow, removed 15 selfloop flow, removed 6 redundant places. [2024-06-27 20:42:18,698 INFO L231 Difference]: Finished difference. Result has 196 places, 138 transitions, 1174 flow [2024-06-27 20:42:18,698 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1174, PETRI_PLACES=196, PETRI_TRANSITIONS=138} [2024-06-27 20:42:18,699 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 165 predicate places. [2024-06-27 20:42:18,699 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 138 transitions, 1174 flow [2024-06-27 20:42:18,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:18,699 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:18,699 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 20:42:18,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-06-27 20:42:18,699 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 20:42:18,700 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:18,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1938755041, now seen corresponding path program 10 times [2024-06-27 20:42:18,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:18,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688423809] [2024-06-27 20:42:18,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:18,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:19,408 INFO 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 20:42:19,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:19,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688423809] [2024-06-27 20:42:19,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688423809] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:19,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:19,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:19,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149909776] [2024-06-27 20:42:19,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:19,408 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:19,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:19,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:19,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:19,502 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:19,502 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 138 transitions, 1174 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:19,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:19,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:19,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:19,740 INFO L124 PetriNetUnfolderBase]: 383/805 cut-off events. [2024-06-27 20:42:19,740 INFO L125 PetriNetUnfolderBase]: For 35893/35893 co-relation queries the response was YES. [2024-06-27 20:42:19,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4494 conditions, 805 events. 383/805 cut-off events. For 35893/35893 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 4485 event pairs, 64 based on Foata normal form. 2/806 useless extension candidates. Maximal degree in co-relation 4402. Up to 640 conditions per place. [2024-06-27 20:42:19,746 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 125 selfloop transitions, 26 changer transitions 0/155 dead transitions. [2024-06-27 20:42:19,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 155 transitions, 1538 flow [2024-06-27 20:42:19,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:19,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:19,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-27 20:42:19,747 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-27 20:42:19,747 INFO L175 Difference]: Start difference. First operand has 196 places, 138 transitions, 1174 flow. Second operand 10 states and 132 transitions. [2024-06-27 20:42:19,748 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 155 transitions, 1538 flow [2024-06-27 20:42:19,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 155 transitions, 1483 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:19,824 INFO L231 Difference]: Finished difference. Result has 197 places, 139 transitions, 1197 flow [2024-06-27 20:42:19,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1119, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1197, PETRI_PLACES=197, PETRI_TRANSITIONS=139} [2024-06-27 20:42:19,824 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 166 predicate places. [2024-06-27 20:42:19,824 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 139 transitions, 1197 flow [2024-06-27 20:42:19,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:19,824 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:19,824 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 20:42:19,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-06-27 20:42:19,825 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 20:42:19,825 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:19,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1941338997, now seen corresponding path program 2 times [2024-06-27 20:42:19,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:19,825 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955242956] [2024-06-27 20:42:19,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:19,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:20,780 INFO 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 20:42:20,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:20,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955242956] [2024-06-27 20:42:20,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955242956] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:20,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:20,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:20,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328711340] [2024-06-27 20:42:20,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:20,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:20,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:20,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:20,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:20,883 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:20,884 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 139 transitions, 1197 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:20,884 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:20,884 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:20,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:21,236 INFO L124 PetriNetUnfolderBase]: 386/812 cut-off events. [2024-06-27 20:42:21,236 INFO L125 PetriNetUnfolderBase]: For 35298/35298 co-relation queries the response was YES. [2024-06-27 20:42:21,239 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4592 conditions, 812 events. 386/812 cut-off events. For 35298/35298 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4542 event pairs, 68 based on Foata normal form. 1/812 useless extension candidates. Maximal degree in co-relation 4499. Up to 698 conditions per place. [2024-06-27 20:42:21,241 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 126 selfloop transitions, 25 changer transitions 3/158 dead transitions. [2024-06-27 20:42:21,241 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 158 transitions, 1646 flow [2024-06-27 20:42:21,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:42:21,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:42:21,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 151 transitions. [2024-06-27 20:42:21,242 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3932291666666667 [2024-06-27 20:42:21,242 INFO L175 Difference]: Start difference. First operand has 197 places, 139 transitions, 1197 flow. Second operand 12 states and 151 transitions. [2024-06-27 20:42:21,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 158 transitions, 1646 flow [2024-06-27 20:42:21,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 158 transitions, 1578 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:21,316 INFO L231 Difference]: Finished difference. Result has 202 places, 141 transitions, 1248 flow [2024-06-27 20:42:21,316 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1129, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=114, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1248, PETRI_PLACES=202, PETRI_TRANSITIONS=141} [2024-06-27 20:42:21,317 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 171 predicate places. [2024-06-27 20:42:21,317 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 141 transitions, 1248 flow [2024-06-27 20:42:21,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:21,317 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:21,317 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 20:42:21,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-06-27 20:42:21,317 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 20:42:21,318 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:21,318 INFO L85 PathProgramCache]: Analyzing trace with hash -1669704287, now seen corresponding path program 11 times [2024-06-27 20:42:21,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:21,318 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315733673] [2024-06-27 20:42:21,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:21,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:22,033 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 20:42:22,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:22,034 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315733673] [2024-06-27 20:42:22,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315733673] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:22,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:22,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:22,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [283679448] [2024-06-27 20:42:22,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:22,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:22,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:22,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:22,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:22,130 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:22,130 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 141 transitions, 1248 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:22,130 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:22,130 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:22,130 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:22,433 INFO L124 PetriNetUnfolderBase]: 384/800 cut-off events. [2024-06-27 20:42:22,433 INFO L125 PetriNetUnfolderBase]: For 37904/37904 co-relation queries the response was YES. [2024-06-27 20:42:22,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4535 conditions, 800 events. 384/800 cut-off events. For 37904/37904 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4427 event pairs, 65 based on Foata normal form. 2/798 useless extension candidates. Maximal degree in co-relation 4440. Up to 641 conditions per place. [2024-06-27 20:42:22,438 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 117 selfloop transitions, 36 changer transitions 3/160 dead transitions. [2024-06-27 20:42:22,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 160 transitions, 1720 flow [2024-06-27 20:42:22,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:22,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:22,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 20:42:22,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 20:42:22,440 INFO L175 Difference]: Start difference. First operand has 202 places, 141 transitions, 1248 flow. Second operand 10 states and 135 transitions. [2024-06-27 20:42:22,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 160 transitions, 1720 flow [2024-06-27 20:42:22,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 160 transitions, 1611 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:22,534 INFO L231 Difference]: Finished difference. Result has 203 places, 145 transitions, 1300 flow [2024-06-27 20:42:22,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1300, PETRI_PLACES=203, PETRI_TRANSITIONS=145} [2024-06-27 20:42:22,535 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2024-06-27 20:42:22,535 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 145 transitions, 1300 flow [2024-06-27 20:42:22,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:22,535 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:22,535 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 20:42:22,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-06-27 20:42:22,535 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 20:42:22,535 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:22,535 INFO L85 PathProgramCache]: Analyzing trace with hash -1669708937, now seen corresponding path program 12 times [2024-06-27 20:42:22,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:22,536 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342092921] [2024-06-27 20:42:22,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:22,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:22,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:23,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:23,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:23,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342092921] [2024-06-27 20:42:23,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342092921] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:23,220 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:23,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:23,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431572812] [2024-06-27 20:42:23,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:23,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:23,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:23,221 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:23,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:23,357 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:23,357 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 145 transitions, 1300 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:23,357 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:23,357 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:23,357 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:23,593 INFO L124 PetriNetUnfolderBase]: 391/819 cut-off events. [2024-06-27 20:42:23,593 INFO L125 PetriNetUnfolderBase]: For 43358/43358 co-relation queries the response was YES. [2024-06-27 20:42:23,597 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4805 conditions, 819 events. 391/819 cut-off events. For 43358/43358 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4597 event pairs, 66 based on Foata normal form. 2/817 useless extension candidates. Maximal degree in co-relation 4708. Up to 635 conditions per place. [2024-06-27 20:42:23,598 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 119 selfloop transitions, 38 changer transitions 1/162 dead transitions. [2024-06-27 20:42:23,598 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 162 transitions, 1872 flow [2024-06-27 20:42:23,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:23,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:23,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-27 20:42:23,599 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 20:42:23,599 INFO L175 Difference]: Start difference. First operand has 203 places, 145 transitions, 1300 flow. Second operand 10 states and 136 transitions. [2024-06-27 20:42:23,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 162 transitions, 1872 flow [2024-06-27 20:42:23,702 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 162 transitions, 1756 flow, removed 30 selfloop flow, removed 5 redundant places. [2024-06-27 20:42:23,704 INFO L231 Difference]: Finished difference. Result has 208 places, 147 transitions, 1316 flow [2024-06-27 20:42:23,704 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1186, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=145, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1316, PETRI_PLACES=208, PETRI_TRANSITIONS=147} [2024-06-27 20:42:23,704 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-06-27 20:42:23,704 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 147 transitions, 1316 flow [2024-06-27 20:42:23,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:23,705 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:23,705 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 20:42:23,705 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-06-27 20:42:23,705 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 20:42:23,705 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:23,705 INFO L85 PathProgramCache]: Analyzing trace with hash -738134397, now seen corresponding path program 13 times [2024-06-27 20:42:23,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:23,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1066298531] [2024-06-27 20:42:23,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:23,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:24,371 INFO 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 20:42:24,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:24,371 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1066298531] [2024-06-27 20:42:24,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1066298531] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:24,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:24,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:24,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603153116] [2024-06-27 20:42:24,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:24,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:24,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:24,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:24,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:24,445 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:24,445 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 147 transitions, 1316 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:24,445 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:24,445 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:24,445 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:24,700 INFO L124 PetriNetUnfolderBase]: 388/814 cut-off events. [2024-06-27 20:42:24,701 INFO L125 PetriNetUnfolderBase]: For 39425/39425 co-relation queries the response was YES. [2024-06-27 20:42:24,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4601 conditions, 814 events. 388/814 cut-off events. For 39425/39425 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 4583 event pairs, 67 based on Foata normal form. 2/812 useless extension candidates. Maximal degree in co-relation 4503. Up to 653 conditions per place. [2024-06-27 20:42:24,706 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 37 changer transitions 1/160 dead transitions. [2024-06-27 20:42:24,706 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 160 transitions, 1700 flow [2024-06-27 20:42:24,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:24,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:24,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 20:42:24,707 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-27 20:42:24,707 INFO L175 Difference]: Start difference. First operand has 208 places, 147 transitions, 1316 flow. Second operand 10 states and 133 transitions. [2024-06-27 20:42:24,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 160 transitions, 1700 flow [2024-06-27 20:42:24,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 160 transitions, 1613 flow, removed 21 selfloop flow, removed 6 redundant places. [2024-06-27 20:42:24,806 INFO L231 Difference]: Finished difference. Result has 212 places, 147 transitions, 1307 flow [2024-06-27 20:42:24,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1229, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1307, PETRI_PLACES=212, PETRI_TRANSITIONS=147} [2024-06-27 20:42:24,806 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-27 20:42:24,806 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 147 transitions, 1307 flow [2024-06-27 20:42:24,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:24,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:24,807 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 20:42:24,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-06-27 20:42:24,807 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 20:42:24,807 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:24,807 INFO L85 PathProgramCache]: Analyzing trace with hash 737401515, now seen corresponding path program 14 times [2024-06-27 20:42:24,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:24,807 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470484152] [2024-06-27 20:42:24,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:24,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:24,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:25,536 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:25,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:25,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470484152] [2024-06-27 20:42:25,536 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470484152] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:25,536 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:25,536 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:25,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529431368] [2024-06-27 20:42:25,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:25,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:25,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:25,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:25,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:25,626 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:25,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 147 transitions, 1307 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:25,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:25,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:25,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:25,917 INFO L124 PetriNetUnfolderBase]: 399/835 cut-off events. [2024-06-27 20:42:25,917 INFO L125 PetriNetUnfolderBase]: For 44899/44899 co-relation queries the response was YES. [2024-06-27 20:42:25,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4894 conditions, 835 events. 399/835 cut-off events. For 44899/44899 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4705 event pairs, 68 based on Foata normal form. 2/833 useless extension candidates. Maximal degree in co-relation 4794. Up to 657 conditions per place. [2024-06-27 20:42:25,924 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 120 selfloop transitions, 39 changer transitions 4/167 dead transitions. [2024-06-27 20:42:25,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 167 transitions, 1927 flow [2024-06-27 20:42:25,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:25,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:25,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 136 transitions. [2024-06-27 20:42:25,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425 [2024-06-27 20:42:25,925 INFO L175 Difference]: Start difference. First operand has 212 places, 147 transitions, 1307 flow. Second operand 10 states and 136 transitions. [2024-06-27 20:42:25,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 167 transitions, 1927 flow [2024-06-27 20:42:26,030 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 167 transitions, 1830 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 20:42:26,032 INFO L231 Difference]: Finished difference. Result has 212 places, 149 transitions, 1352 flow [2024-06-27 20:42:26,033 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1216, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1352, PETRI_PLACES=212, PETRI_TRANSITIONS=149} [2024-06-27 20:42:26,033 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-06-27 20:42:26,033 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 149 transitions, 1352 flow [2024-06-27 20:42:26,033 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:26,033 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:26,033 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 20:42:26,033 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-06-27 20:42:26,033 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 20:42:26,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:26,034 INFO L85 PathProgramCache]: Analyzing trace with hash -942414891, now seen corresponding path program 15 times [2024-06-27 20:42:26,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:26,034 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912498992] [2024-06-27 20:42:26,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:26,034 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:26,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:26,772 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 20:42:26,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:26,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912498992] [2024-06-27 20:42:26,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912498992] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:26,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:26,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:26,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308879894] [2024-06-27 20:42:26,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:26,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:26,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:26,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:26,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:26,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:26,843 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 149 transitions, 1352 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:26,843 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:26,843 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:26,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:27,167 INFO L124 PetriNetUnfolderBase]: 342/708 cut-off events. [2024-06-27 20:42:27,167 INFO L125 PetriNetUnfolderBase]: For 37180/37180 co-relation queries the response was YES. [2024-06-27 20:42:27,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3965 conditions, 708 events. 342/708 cut-off events. For 37180/37180 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 3827 event pairs, 53 based on Foata normal form. 2/706 useless extension candidates. Maximal degree in co-relation 3865. Up to 551 conditions per place. [2024-06-27 20:42:27,172 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 119 selfloop transitions, 38 changer transitions 0/161 dead transitions. [2024-06-27 20:42:27,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 161 transitions, 1698 flow [2024-06-27 20:42:27,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:27,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:27,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 131 transitions. [2024-06-27 20:42:27,173 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.409375 [2024-06-27 20:42:27,173 INFO L175 Difference]: Start difference. First operand has 212 places, 149 transitions, 1352 flow. Second operand 10 states and 131 transitions. [2024-06-27 20:42:27,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 161 transitions, 1698 flow [2024-06-27 20:42:27,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 213 places, 161 transitions, 1521 flow, removed 65 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:27,253 INFO L231 Difference]: Finished difference. Result has 214 places, 149 transitions, 1255 flow [2024-06-27 20:42:27,254 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1175, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1255, PETRI_PLACES=214, PETRI_TRANSITIONS=149} [2024-06-27 20:42:27,254 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-06-27 20:42:27,254 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 149 transitions, 1255 flow [2024-06-27 20:42:27,254 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:27,254 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:27,254 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 20:42:27,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-06-27 20:42:27,255 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 20:42:27,255 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:27,255 INFO L85 PathProgramCache]: Analyzing trace with hash 1440781955, now seen corresponding path program 16 times [2024-06-27 20:42:27,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:27,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666767682] [2024-06-27 20:42:27,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:27,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:27,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:27,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:27,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:27,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666767682] [2024-06-27 20:42:27,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666767682] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:27,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:27,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:27,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459963391] [2024-06-27 20:42:27,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:27,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:27,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:27,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:27,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:28,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:28,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 149 transitions, 1255 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:28,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:28,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:28,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:28,249 INFO L124 PetriNetUnfolderBase]: 346/716 cut-off events. [2024-06-27 20:42:28,249 INFO L125 PetriNetUnfolderBase]: For 36879/36879 co-relation queries the response was YES. [2024-06-27 20:42:28,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3819 conditions, 716 events. 346/716 cut-off events. For 36879/36879 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 3869 event pairs, 49 based on Foata normal form. 2/714 useless extension candidates. Maximal degree in co-relation 3722. Up to 476 conditions per place. [2024-06-27 20:42:28,254 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 117 selfloop transitions, 44 changer transitions 0/165 dead transitions. [2024-06-27 20:42:28,254 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 165 transitions, 1781 flow [2024-06-27 20:42:28,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:28,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:28,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 135 transitions. [2024-06-27 20:42:28,254 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2024-06-27 20:42:28,255 INFO L175 Difference]: Start difference. First operand has 214 places, 149 transitions, 1255 flow. Second operand 10 states and 135 transitions. [2024-06-27 20:42:28,255 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 165 transitions, 1781 flow [2024-06-27 20:42:28,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 165 transitions, 1702 flow, removed 0 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:28,338 INFO L231 Difference]: Finished difference. Result has 215 places, 150 transitions, 1296 flow [2024-06-27 20:42:28,339 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1176, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1296, PETRI_PLACES=215, PETRI_TRANSITIONS=150} [2024-06-27 20:42:28,339 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-06-27 20:42:28,339 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 150 transitions, 1296 flow [2024-06-27 20:42:28,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:28,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:28,339 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:28,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-06-27 20:42:28,339 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 20:42:28,340 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:28,340 INFO L85 PathProgramCache]: Analyzing trace with hash -578606907, now seen corresponding path program 17 times [2024-06-27 20:42:28,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:28,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42824952] [2024-06-27 20:42:28,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:28,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:28,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:29,007 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 20:42:29,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:29,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42824952] [2024-06-27 20:42:29,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42824952] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:29,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:29,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:29,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838628266] [2024-06-27 20:42:29,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:29,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:29,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:29,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:29,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:29,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:29,079 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 150 transitions, 1296 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:29,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:29,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:29,079 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:29,300 INFO L124 PetriNetUnfolderBase]: 351/727 cut-off events. [2024-06-27 20:42:29,301 INFO L125 PetriNetUnfolderBase]: For 38348/38348 co-relation queries the response was YES. [2024-06-27 20:42:29,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3955 conditions, 727 events. 351/727 cut-off events. For 38348/38348 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 3964 event pairs, 53 based on Foata normal form. 2/725 useless extension candidates. Maximal degree in co-relation 3857. Up to 569 conditions per place. [2024-06-27 20:42:29,306 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 122 selfloop transitions, 39 changer transitions 0/165 dead transitions. [2024-06-27 20:42:29,306 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 165 transitions, 1703 flow [2024-06-27 20:42:29,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:29,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:29,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 132 transitions. [2024-06-27 20:42:29,307 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4125 [2024-06-27 20:42:29,307 INFO L175 Difference]: Start difference. First operand has 215 places, 150 transitions, 1296 flow. Second operand 10 states and 132 transitions. [2024-06-27 20:42:29,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 165 transitions, 1703 flow [2024-06-27 20:42:29,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 165 transitions, 1553 flow, removed 21 selfloop flow, removed 10 redundant places. [2024-06-27 20:42:29,388 INFO L231 Difference]: Finished difference. Result has 216 places, 153 transitions, 1290 flow [2024-06-27 20:42:29,389 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1158, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1290, PETRI_PLACES=216, PETRI_TRANSITIONS=153} [2024-06-27 20:42:29,389 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-06-27 20:42:29,389 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 153 transitions, 1290 flow [2024-06-27 20:42:29,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:29,389 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:29,389 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:29,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-06-27 20:42:29,389 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 20:42:29,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:29,390 INFO L85 PathProgramCache]: Analyzing trace with hash 1581450389, now seen corresponding path program 18 times [2024-06-27 20:42:29,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:29,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999381737] [2024-06-27 20:42:29,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:29,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:29,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:30,068 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 20:42:30,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:30,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999381737] [2024-06-27 20:42:30,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999381737] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:30,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:30,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:30,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805174470] [2024-06-27 20:42:30,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:30,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:30,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:30,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:30,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:30,146 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:30,146 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 153 transitions, 1290 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:30,146 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:30,146 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:30,146 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:30,407 INFO L124 PetriNetUnfolderBase]: 355/735 cut-off events. [2024-06-27 20:42:30,407 INFO L125 PetriNetUnfolderBase]: For 38896/38896 co-relation queries the response was YES. [2024-06-27 20:42:30,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3848 conditions, 735 events. 355/735 cut-off events. For 38896/38896 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 4026 event pairs, 55 based on Foata normal form. 2/733 useless extension candidates. Maximal degree in co-relation 3751. Up to 577 conditions per place. [2024-06-27 20:42:30,413 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 122 selfloop transitions, 40 changer transitions 0/166 dead transitions. [2024-06-27 20:42:30,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 166 transitions, 1669 flow [2024-06-27 20:42:30,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:30,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:30,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 20:42:30,414 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 20:42:30,414 INFO L175 Difference]: Start difference. First operand has 216 places, 153 transitions, 1290 flow. Second operand 10 states and 130 transitions. [2024-06-27 20:42:30,414 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 166 transitions, 1669 flow [2024-06-27 20:42:30,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 166 transitions, 1545 flow, removed 13 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:30,521 INFO L231 Difference]: Finished difference. Result has 218 places, 154 transitions, 1275 flow [2024-06-27 20:42:30,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=113, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1275, PETRI_PLACES=218, PETRI_TRANSITIONS=154} [2024-06-27 20:42:30,521 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 187 predicate places. [2024-06-27 20:42:30,521 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 154 transitions, 1275 flow [2024-06-27 20:42:30,521 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:30,521 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:30,521 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 20:42:30,522 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-06-27 20:42:30,522 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 20:42:30,522 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:30,522 INFO L85 PathProgramCache]: Analyzing trace with hash 1581272759, now seen corresponding path program 19 times [2024-06-27 20:42:30,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:30,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39027143] [2024-06-27 20:42:30,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:30,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:30,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:31,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:31,240 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:31,240 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39027143] [2024-06-27 20:42:31,240 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39027143] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:31,240 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:31,240 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:31,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320306401] [2024-06-27 20:42:31,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:31,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:31,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:31,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:31,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:31,329 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:31,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 154 transitions, 1275 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:31,330 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:31,330 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:31,330 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:31,560 INFO L124 PetriNetUnfolderBase]: 359/743 cut-off events. [2024-06-27 20:42:31,560 INFO L125 PetriNetUnfolderBase]: For 39977/39977 co-relation queries the response was YES. [2024-06-27 20:42:31,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3836 conditions, 743 events. 359/743 cut-off events. For 39977/39977 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4073 event pairs, 53 based on Foata normal form. 2/741 useless extension candidates. Maximal degree in co-relation 3739. Up to 556 conditions per place. [2024-06-27 20:42:31,565 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 122 selfloop transitions, 43 changer transitions 0/169 dead transitions. [2024-06-27 20:42:31,565 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 169 transitions, 1810 flow [2024-06-27 20:42:31,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:31,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:31,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 133 transitions. [2024-06-27 20:42:31,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.415625 [2024-06-27 20:42:31,566 INFO L175 Difference]: Start difference. First operand has 218 places, 154 transitions, 1275 flow. Second operand 10 states and 133 transitions. [2024-06-27 20:42:31,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 169 transitions, 1810 flow [2024-06-27 20:42:31,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 169 transitions, 1699 flow, removed 12 selfloop flow, removed 8 redundant places. [2024-06-27 20:42:31,649 INFO L231 Difference]: Finished difference. Result has 220 places, 155 transitions, 1279 flow [2024-06-27 20:42:31,649 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1164, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1279, PETRI_PLACES=220, PETRI_TRANSITIONS=155} [2024-06-27 20:42:31,649 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2024-06-27 20:42:31,649 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 155 transitions, 1279 flow [2024-06-27 20:42:31,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:31,653 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:31,653 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 20:42:31,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-06-27 20:42:31,653 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 20:42:31,654 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:31,654 INFO L85 PathProgramCache]: Analyzing trace with hash -1678688205, now seen corresponding path program 20 times [2024-06-27 20:42:31,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:31,654 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227352995] [2024-06-27 20:42:31,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:31,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:31,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:32,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:32,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:32,287 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227352995] [2024-06-27 20:42:32,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227352995] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:32,287 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:32,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-06-27 20:42:32,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45718896] [2024-06-27 20:42:32,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:32,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-06-27 20:42:32,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:32,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-06-27 20:42:32,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2024-06-27 20:42:32,379 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:32,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 155 transitions, 1279 flow. Second operand has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:32,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:32,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:32,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:32,619 INFO L124 PetriNetUnfolderBase]: 356/738 cut-off events. [2024-06-27 20:42:32,619 INFO L125 PetriNetUnfolderBase]: For 35563/35563 co-relation queries the response was YES. [2024-06-27 20:42:32,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3632 conditions, 738 events. 356/738 cut-off events. For 35563/35563 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4061 event pairs, 54 based on Foata normal form. 2/736 useless extension candidates. Maximal degree in co-relation 3536. Up to 580 conditions per place. [2024-06-27 20:42:32,624 INFO L140 encePairwiseOnDemand]: 22/32 looper letters, 118 selfloop transitions, 45 changer transitions 0/167 dead transitions. [2024-06-27 20:42:32,624 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 167 transitions, 1637 flow [2024-06-27 20:42:32,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-06-27 20:42:32,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-06-27 20:42:32,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 130 transitions. [2024-06-27 20:42:32,625 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 20:42:32,625 INFO L175 Difference]: Start difference. First operand has 220 places, 155 transitions, 1279 flow. Second operand 10 states and 130 transitions. [2024-06-27 20:42:32,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 167 transitions, 1637 flow [2024-06-27 20:42:32,716 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 167 transitions, 1453 flow, removed 20 selfloop flow, removed 10 redundant places. [2024-06-27 20:42:32,718 INFO L231 Difference]: Finished difference. Result has 220 places, 155 transitions, 1189 flow [2024-06-27 20:42:32,718 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1095, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1189, PETRI_PLACES=220, PETRI_TRANSITIONS=155} [2024-06-27 20:42:32,718 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2024-06-27 20:42:32,718 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 155 transitions, 1189 flow [2024-06-27 20:42:32,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 9.272727272727273) internal successors, (102), 11 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:32,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:32,719 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 20:42:32,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-06-27 20:42:32,719 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 20:42:32,719 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:32,719 INFO L85 PathProgramCache]: Analyzing trace with hash 1817929363, now seen corresponding path program 3 times [2024-06-27 20:42:32,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:32,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708255053] [2024-06-27 20:42:32,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:32,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:32,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:33,546 INFO 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 20:42:33,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:33,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708255053] [2024-06-27 20:42:33,546 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708255053] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:33,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:33,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:33,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049641653] [2024-06-27 20:42:33,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:33,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:33,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:33,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:33,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:33,642 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:33,642 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 155 transitions, 1189 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:33,642 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:33,642 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:33,642 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:33,903 INFO L124 PetriNetUnfolderBase]: 359/743 cut-off events. [2024-06-27 20:42:33,903 INFO L125 PetriNetUnfolderBase]: For 33561/33561 co-relation queries the response was YES. [2024-06-27 20:42:33,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3508 conditions, 743 events. 359/743 cut-off events. For 33561/33561 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4122 event pairs, 59 based on Foata normal form. 1/736 useless extension candidates. Maximal degree in co-relation 3413. Up to 532 conditions per place. [2024-06-27 20:42:33,908 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 108 selfloop transitions, 56 changer transitions 0/168 dead transitions. [2024-06-27 20:42:33,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 168 transitions, 1601 flow [2024-06-27 20:42:33,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:33,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:33,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 20:42:33,909 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-27 20:42:33,909 INFO L175 Difference]: Start difference. First operand has 220 places, 155 transitions, 1189 flow. Second operand 11 states and 146 transitions. [2024-06-27 20:42:33,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 168 transitions, 1601 flow [2024-06-27 20:42:33,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 168 transitions, 1438 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 20:42:33,992 INFO L231 Difference]: Finished difference. Result has 219 places, 157 transitions, 1205 flow [2024-06-27 20:42:33,993 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=99, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1205, PETRI_PLACES=219, PETRI_TRANSITIONS=157} [2024-06-27 20:42:33,993 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-06-27 20:42:33,993 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 157 transitions, 1205 flow [2024-06-27 20:42:33,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:33,993 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:33,993 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 20:42:33,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-06-27 20:42:33,993 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 20:42:33,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:33,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1670110381, now seen corresponding path program 4 times [2024-06-27 20:42:33,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:33,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703968932] [2024-06-27 20:42:33,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:33,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:34,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:34,872 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 20:42:34,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:34,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703968932] [2024-06-27 20:42:34,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703968932] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:34,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:34,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:34,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883355099] [2024-06-27 20:42:34,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:34,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:34,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:34,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:34,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:34,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:34,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 157 transitions, 1205 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:34,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:34,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:34,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:35,223 INFO L124 PetriNetUnfolderBase]: 362/752 cut-off events. [2024-06-27 20:42:35,223 INFO L125 PetriNetUnfolderBase]: For 34844/34844 co-relation queries the response was YES. [2024-06-27 20:42:35,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3541 conditions, 752 events. 362/752 cut-off events. For 34844/34844 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 4182 event pairs, 54 based on Foata normal form. 1/749 useless extension candidates. Maximal degree in co-relation 3447. Up to 572 conditions per place. [2024-06-27 20:42:35,228 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 117 selfloop transitions, 50 changer transitions 0/171 dead transitions. [2024-06-27 20:42:35,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 229 places, 171 transitions, 1633 flow [2024-06-27 20:42:35,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:35,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:35,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-27 20:42:35,229 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 20:42:35,229 INFO L175 Difference]: Start difference. First operand has 219 places, 157 transitions, 1205 flow. Second operand 11 states and 144 transitions. [2024-06-27 20:42:35,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 229 places, 171 transitions, 1633 flow [2024-06-27 20:42:35,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 171 transitions, 1470 flow, removed 27 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:35,302 INFO L231 Difference]: Finished difference. Result has 221 places, 159 transitions, 1213 flow [2024-06-27 20:42:35,302 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1042, PETRI_DIFFERENCE_MINUEND_PLACES=210, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1213, PETRI_PLACES=221, PETRI_TRANSITIONS=159} [2024-06-27 20:42:35,303 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-06-27 20:42:35,303 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 159 transitions, 1213 flow [2024-06-27 20:42:35,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:35,303 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:35,303 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 20:42:35,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-06-27 20:42:35,303 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 20:42:35,304 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:35,304 INFO L85 PathProgramCache]: Analyzing trace with hash -535368843, now seen corresponding path program 5 times [2024-06-27 20:42:35,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:35,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039037937] [2024-06-27 20:42:35,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:35,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:36,119 INFO 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 20:42:36,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:36,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039037937] [2024-06-27 20:42:36,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039037937] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:36,120 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:36,120 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:36,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155542148] [2024-06-27 20:42:36,120 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:36,120 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:36,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:36,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:36,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:36,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:36,258 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 159 transitions, 1213 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:36,258 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:36,258 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:36,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:36,528 INFO L124 PetriNetUnfolderBase]: 365/760 cut-off events. [2024-06-27 20:42:36,528 INFO L125 PetriNetUnfolderBase]: For 35727/35729 co-relation queries the response was YES. [2024-06-27 20:42:36,531 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3585 conditions, 760 events. 365/760 cut-off events. For 35727/35729 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 4240 event pairs, 54 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 3490. Up to 677 conditions per place. [2024-06-27 20:42:36,533 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 151 selfloop transitions, 17 changer transitions 0/172 dead transitions. [2024-06-27 20:42:36,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 231 places, 172 transitions, 1641 flow [2024-06-27 20:42:36,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:36,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:36,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 134 transitions. [2024-06-27 20:42:36,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3806818181818182 [2024-06-27 20:42:36,534 INFO L175 Difference]: Start difference. First operand has 221 places, 159 transitions, 1213 flow. Second operand 11 states and 134 transitions. [2024-06-27 20:42:36,534 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 231 places, 172 transitions, 1641 flow [2024-06-27 20:42:36,617 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 172 transitions, 1486 flow, removed 29 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:36,619 INFO L231 Difference]: Finished difference. Result has 223 places, 161 transitions, 1167 flow [2024-06-27 20:42:36,619 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1167, PETRI_PLACES=223, PETRI_TRANSITIONS=161} [2024-06-27 20:42:36,619 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-06-27 20:42:36,619 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 161 transitions, 1167 flow [2024-06-27 20:42:36,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:36,620 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:36,620 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 20:42:36,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-06-27 20:42:36,620 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 20:42:36,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:36,620 INFO L85 PathProgramCache]: Analyzing trace with hash -193070253, now seen corresponding path program 6 times [2024-06-27 20:42:36,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:36,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539033674] [2024-06-27 20:42:36,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:36,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:36,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:37,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:37,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:37,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539033674] [2024-06-27 20:42:37,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539033674] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:37,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:37,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:37,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186374098] [2024-06-27 20:42:37,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:37,698 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:37,698 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:37,698 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:37,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:37,812 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:37,812 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 161 transitions, 1167 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:37,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:37,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:37,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:38,121 INFO L124 PetriNetUnfolderBase]: 368/767 cut-off events. [2024-06-27 20:42:38,121 INFO L125 PetriNetUnfolderBase]: For 36782/36784 co-relation queries the response was YES. [2024-06-27 20:42:38,125 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3574 conditions, 767 events. 368/767 cut-off events. For 36782/36784 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4289 event pairs, 54 based on Foata normal form. 1/767 useless extension candidates. Maximal degree in co-relation 3478. Up to 673 conditions per place. [2024-06-27 20:42:38,126 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 149 selfloop transitions, 22 changer transitions 0/175 dead transitions. [2024-06-27 20:42:38,126 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 175 transitions, 1607 flow [2024-06-27 20:42:38,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:42:38,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:42:38,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-27 20:42:38,127 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-27 20:42:38,128 INFO L175 Difference]: Start difference. First operand has 223 places, 161 transitions, 1167 flow. Second operand 12 states and 147 transitions. [2024-06-27 20:42:38,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 175 transitions, 1607 flow [2024-06-27 20:42:38,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 175 transitions, 1514 flow, removed 31 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:38,203 INFO L231 Difference]: Finished difference. Result has 226 places, 163 transitions, 1197 flow [2024-06-27 20:42:38,203 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1074, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1197, PETRI_PLACES=226, PETRI_TRANSITIONS=163} [2024-06-27 20:42:38,204 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-27 20:42:38,204 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 163 transitions, 1197 flow [2024-06-27 20:42:38,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:38,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:38,204 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 20:42:38,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-06-27 20:42:38,204 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 20:42:38,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:38,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1177452277, now seen corresponding path program 7 times [2024-06-27 20:42:38,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:38,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175837060] [2024-06-27 20:42:38,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:38,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:39,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:39,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:39,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175837060] [2024-06-27 20:42:39,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175837060] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:39,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:39,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:39,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454826482] [2024-06-27 20:42:39,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:39,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:39,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:39,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:39,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:39,303 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:39,304 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 163 transitions, 1197 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:39,304 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:39,304 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:39,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:39,624 INFO L124 PetriNetUnfolderBase]: 366/763 cut-off events. [2024-06-27 20:42:39,624 INFO L125 PetriNetUnfolderBase]: For 34337/34337 co-relation queries the response was YES. [2024-06-27 20:42:39,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3438 conditions, 763 events. 366/763 cut-off events. For 34337/34337 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 4279 event pairs, 54 based on Foata normal form. 1/760 useless extension candidates. Maximal degree in co-relation 3341. Up to 579 conditions per place. [2024-06-27 20:42:39,629 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 130 selfloop transitions, 43 changer transitions 0/177 dead transitions. [2024-06-27 20:42:39,629 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 177 transitions, 1649 flow [2024-06-27 20:42:39,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:39,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:39,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 20:42:39,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-27 20:42:39,630 INFO L175 Difference]: Start difference. First operand has 226 places, 163 transitions, 1197 flow. Second operand 11 states and 146 transitions. [2024-06-27 20:42:39,630 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 177 transitions, 1649 flow [2024-06-27 20:42:39,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 226 places, 177 transitions, 1535 flow, removed 35 selfloop flow, removed 10 redundant places. [2024-06-27 20:42:39,699 INFO L231 Difference]: Finished difference. Result has 227 places, 165 transitions, 1252 flow [2024-06-27 20:42:39,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1083, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=120, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1252, PETRI_PLACES=227, PETRI_TRANSITIONS=165} [2024-06-27 20:42:39,700 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 196 predicate places. [2024-06-27 20:42:39,700 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 165 transitions, 1252 flow [2024-06-27 20:42:39,700 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:39,700 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:39,700 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 20:42:39,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-06-27 20:42:39,701 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 20:42:39,701 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:39,701 INFO L85 PathProgramCache]: Analyzing trace with hash 1880464998, now seen corresponding path program 1 times [2024-06-27 20:42:39,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:39,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1324311651] [2024-06-27 20:42:39,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:39,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:39,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:40,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:40,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:40,482 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1324311651] [2024-06-27 20:42:40,482 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1324311651] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:40,482 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:40,482 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:40,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069338292] [2024-06-27 20:42:40,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:40,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:40,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:40,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:40,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:40,591 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:40,591 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 165 transitions, 1252 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:40,592 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:40,592 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:40,592 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:40,817 INFO L124 PetriNetUnfolderBase]: 370/773 cut-off events. [2024-06-27 20:42:40,817 INFO L125 PetriNetUnfolderBase]: For 37797/37797 co-relation queries the response was YES. [2024-06-27 20:42:40,820 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3472 conditions, 773 events. 370/773 cut-off events. For 37797/37797 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4320 event pairs, 34 based on Foata normal form. 2/774 useless extension candidates. Maximal degree in co-relation 3374. Up to 625 conditions per place. [2024-06-27 20:42:40,822 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 164 selfloop transitions, 19 changer transitions 0/187 dead transitions. [2024-06-27 20:42:40,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 187 transitions, 1682 flow [2024-06-27 20:42:40,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:40,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:40,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 140 transitions. [2024-06-27 20:42:40,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3977272727272727 [2024-06-27 20:42:40,823 INFO L175 Difference]: Start difference. First operand has 227 places, 165 transitions, 1252 flow. Second operand 11 states and 140 transitions. [2024-06-27 20:42:40,823 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 187 transitions, 1682 flow [2024-06-27 20:42:40,904 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 187 transitions, 1529 flow, removed 35 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:40,906 INFO L231 Difference]: Finished difference. Result has 229 places, 166 transitions, 1153 flow [2024-06-27 20:42:40,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1099, PETRI_DIFFERENCE_MINUEND_PLACES=218, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1153, PETRI_PLACES=229, PETRI_TRANSITIONS=166} [2024-06-27 20:42:40,906 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 198 predicate places. [2024-06-27 20:42:40,906 INFO L495 AbstractCegarLoop]: Abstraction has has 229 places, 166 transitions, 1153 flow [2024-06-27 20:42:40,906 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:40,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:40,907 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 20:42:40,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-06-27 20:42:40,907 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 20:42:40,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:40,908 INFO L85 PathProgramCache]: Analyzing trace with hash 375537638, now seen corresponding path program 2 times [2024-06-27 20:42:40,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:40,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313738621] [2024-06-27 20:42:40,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:40,908 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:40,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:41,712 INFO 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 20:42:41,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:41,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313738621] [2024-06-27 20:42:41,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313738621] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:41,713 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:41,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:41,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169146186] [2024-06-27 20:42:41,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:41,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:41,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:41,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:41,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:41,827 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:41,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 229 places, 166 transitions, 1153 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:41,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:41,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:41,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:42,118 INFO L124 PetriNetUnfolderBase]: 381/794 cut-off events. [2024-06-27 20:42:42,118 INFO L125 PetriNetUnfolderBase]: For 44342/44342 co-relation queries the response was YES. [2024-06-27 20:42:42,122 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3647 conditions, 794 events. 381/794 cut-off events. For 44342/44342 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4457 event pairs, 52 based on Foata normal form. 2/795 useless extension candidates. Maximal degree in co-relation 3548. Up to 660 conditions per place. [2024-06-27 20:42:42,124 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 157 selfloop transitions, 26 changer transitions 0/187 dead transitions. [2024-06-27 20:42:42,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 239 places, 187 transitions, 1753 flow [2024-06-27 20:42:42,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:42,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:42,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-27 20:42:42,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 20:42:42,125 INFO L175 Difference]: Start difference. First operand has 229 places, 166 transitions, 1153 flow. Second operand 11 states and 144 transitions. [2024-06-27 20:42:42,125 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 239 places, 187 transitions, 1753 flow [2024-06-27 20:42:42,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 187 transitions, 1709 flow, removed 4 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:42,205 INFO L231 Difference]: Finished difference. Result has 231 places, 168 transitions, 1191 flow [2024-06-27 20:42:42,205 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1109, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1191, PETRI_PLACES=231, PETRI_TRANSITIONS=168} [2024-06-27 20:42:42,205 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 200 predicate places. [2024-06-27 20:42:42,205 INFO L495 AbstractCegarLoop]: Abstraction has has 231 places, 168 transitions, 1191 flow [2024-06-27 20:42:42,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:42,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:42,205 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 20:42:42,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2024-06-27 20:42:42,206 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 20:42:42,206 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:42,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1884999480, now seen corresponding path program 3 times [2024-06-27 20:42:42,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:42,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125789575] [2024-06-27 20:42:42,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:42,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:43,064 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 20:42:43,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:43,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125789575] [2024-06-27 20:42:43,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125789575] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:43,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:43,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:43,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566213688] [2024-06-27 20:42:43,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:43,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:43,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:43,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:43,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:43,173 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:43,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 231 places, 168 transitions, 1191 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:43,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:43,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:43,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:43,453 INFO L124 PetriNetUnfolderBase]: 378/789 cut-off events. [2024-06-27 20:42:43,453 INFO L125 PetriNetUnfolderBase]: For 39442/39442 co-relation queries the response was YES. [2024-06-27 20:42:43,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3486 conditions, 789 events. 378/789 cut-off events. For 39442/39442 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 4430 event pairs, 53 based on Foata normal form. 2/790 useless extension candidates. Maximal degree in co-relation 3386. Up to 672 conditions per place. [2024-06-27 20:42:43,461 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 156 selfloop transitions, 25 changer transitions 0/185 dead transitions. [2024-06-27 20:42:43,461 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 185 transitions, 1599 flow [2024-06-27 20:42:43,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:43,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:43,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 20:42:43,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-27 20:42:43,462 INFO L175 Difference]: Start difference. First operand has 231 places, 168 transitions, 1191 flow. Second operand 11 states and 141 transitions. [2024-06-27 20:42:43,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 185 transitions, 1599 flow [2024-06-27 20:42:43,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 185 transitions, 1546 flow, removed 10 selfloop flow, removed 7 redundant places. [2024-06-27 20:42:43,542 INFO L231 Difference]: Finished difference. Result has 235 places, 168 transitions, 1192 flow [2024-06-27 20:42:43,542 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1192, PETRI_PLACES=235, PETRI_TRANSITIONS=168} [2024-06-27 20:42:43,542 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-27 20:42:43,542 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 168 transitions, 1192 flow [2024-06-27 20:42:43,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:43,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:43,542 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 20:42:43,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2024-06-27 20:42:43,543 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 20:42:43,543 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:43,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1879285560, now seen corresponding path program 4 times [2024-06-27 20:42:43,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:43,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726090512] [2024-06-27 20:42:43,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:43,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:43,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:44,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:42:44,410 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:44,410 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726090512] [2024-06-27 20:42:44,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726090512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:44,410 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:44,410 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:44,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892357346] [2024-06-27 20:42:44,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:44,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:44,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:44,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:44,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:44,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:44,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 168 transitions, 1192 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:44,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:44,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:44,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:44,773 INFO L124 PetriNetUnfolderBase]: 382/797 cut-off events. [2024-06-27 20:42:44,773 INFO L125 PetriNetUnfolderBase]: For 40272/40272 co-relation queries the response was YES. [2024-06-27 20:42:44,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3537 conditions, 797 events. 382/797 cut-off events. For 40272/40272 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 4492 event pairs, 51 based on Foata normal form. 2/798 useless extension candidates. Maximal degree in co-relation 3435. Up to 644 conditions per place. [2024-06-27 20:42:44,779 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 157 selfloop transitions, 27 changer transitions 0/188 dead transitions. [2024-06-27 20:42:44,779 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 245 places, 188 transitions, 1624 flow [2024-06-27 20:42:44,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:44,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:44,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-27 20:42:44,780 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-27 20:42:44,780 INFO L175 Difference]: Start difference. First operand has 235 places, 168 transitions, 1192 flow. Second operand 11 states and 145 transitions. [2024-06-27 20:42:44,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 245 places, 188 transitions, 1624 flow [2024-06-27 20:42:44,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 235 places, 188 transitions, 1572 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 20:42:44,867 INFO L231 Difference]: Finished difference. Result has 236 places, 169 transitions, 1214 flow [2024-06-27 20:42:44,867 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1140, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1214, PETRI_PLACES=236, PETRI_TRANSITIONS=169} [2024-06-27 20:42:44,868 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 205 predicate places. [2024-06-27 20:42:44,868 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 169 transitions, 1214 flow [2024-06-27 20:42:44,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:44,868 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:44,868 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 20:42:44,868 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2024-06-27 20:42:44,868 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 20:42:44,868 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:44,868 INFO L85 PathProgramCache]: Analyzing trace with hash -981536090, now seen corresponding path program 5 times [2024-06-27 20:42:44,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:44,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581855337] [2024-06-27 20:42:44,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:44,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:44,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:45,657 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 20:42:45,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:45,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581855337] [2024-06-27 20:42:45,657 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581855337] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:45,657 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:45,657 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:45,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716322137] [2024-06-27 20:42:45,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:45,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:45,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:45,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:45,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:45,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:45,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 169 transitions, 1214 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:45,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:45,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:45,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:46,036 INFO L124 PetriNetUnfolderBase]: 386/805 cut-off events. [2024-06-27 20:42:46,036 INFO L125 PetriNetUnfolderBase]: For 41351/41351 co-relation queries the response was YES. [2024-06-27 20:42:46,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3612 conditions, 805 events. 386/805 cut-off events. For 41351/41351 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4554 event pairs, 51 based on Foata normal form. 2/806 useless extension candidates. Maximal degree in co-relation 3509. Up to 620 conditions per place. [2024-06-27 20:42:46,041 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 159 selfloop transitions, 27 changer transitions 0/190 dead transitions. [2024-06-27 20:42:46,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 190 transitions, 1654 flow [2024-06-27 20:42:46,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:46,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:46,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 20:42:46,042 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-27 20:42:46,042 INFO L175 Difference]: Start difference. First operand has 236 places, 169 transitions, 1214 flow. Second operand 11 states and 147 transitions. [2024-06-27 20:42:46,042 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 190 transitions, 1654 flow [2024-06-27 20:42:46,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 190 transitions, 1590 flow, removed 6 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:46,135 INFO L231 Difference]: Finished difference. Result has 238 places, 170 transitions, 1226 flow [2024-06-27 20:42:46,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1150, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1226, PETRI_PLACES=238, PETRI_TRANSITIONS=170} [2024-06-27 20:42:46,136 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-27 20:42:46,136 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 170 transitions, 1226 flow [2024-06-27 20:42:46,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:46,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:46,136 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 20:42:46,136 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2024-06-27 20:42:46,136 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 20:42:46,136 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:46,136 INFO L85 PathProgramCache]: Analyzing trace with hash -978647484, now seen corresponding path program 1 times [2024-06-27 20:42:46,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:46,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935137720] [2024-06-27 20:42:46,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:46,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:46,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:47,163 INFO 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 20:42:47,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:47,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [935137720] [2024-06-27 20:42:47,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [935137720] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:47,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:47,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:42:47,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420587650] [2024-06-27 20:42:47,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:47,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:42:47,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:47,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:42:47,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:42:47,313 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:47,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 170 transitions, 1226 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:47,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:47,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:47,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:47,631 INFO L124 PetriNetUnfolderBase]: 398/837 cut-off events. [2024-06-27 20:42:47,632 INFO L125 PetriNetUnfolderBase]: For 62958/62958 co-relation queries the response was YES. [2024-06-27 20:42:47,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3825 conditions, 837 events. 398/837 cut-off events. For 62958/62958 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4761 event pairs, 63 based on Foata normal form. 8/844 useless extension candidates. Maximal degree in co-relation 3721. Up to 687 conditions per place. [2024-06-27 20:42:47,637 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 155 selfloop transitions, 23 changer transitions 9/191 dead transitions. [2024-06-27 20:42:47,637 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 249 places, 191 transitions, 1728 flow [2024-06-27 20:42:47,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:42:47,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:42:47,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-06-27 20:42:47,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4010416666666667 [2024-06-27 20:42:47,638 INFO L175 Difference]: Start difference. First operand has 238 places, 170 transitions, 1226 flow. Second operand 12 states and 154 transitions. [2024-06-27 20:42:47,638 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 249 places, 191 transitions, 1728 flow [2024-06-27 20:42:47,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 191 transitions, 1662 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:47,734 INFO L231 Difference]: Finished difference. Result has 241 places, 167 transitions, 1193 flow [2024-06-27 20:42:47,734 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1160, PETRI_DIFFERENCE_MINUEND_PLACES=229, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1193, PETRI_PLACES=241, PETRI_TRANSITIONS=167} [2024-06-27 20:42:47,734 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 210 predicate places. [2024-06-27 20:42:47,734 INFO L495 AbstractCegarLoop]: Abstraction has has 241 places, 167 transitions, 1193 flow [2024-06-27 20:42:47,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:47,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:47,735 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 20:42:47,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2024-06-27 20:42:47,735 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 20:42:47,735 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:47,735 INFO L85 PathProgramCache]: Analyzing trace with hash 31711780, now seen corresponding path program 6 times [2024-06-27 20:42:47,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:47,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599212131] [2024-06-27 20:42:47,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:47,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:47,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:48,503 INFO 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 20:42:48,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:48,504 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599212131] [2024-06-27 20:42:48,504 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [599212131] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:48,504 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:48,504 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:48,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44860336] [2024-06-27 20:42:48,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:48,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:48,504 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:48,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:48,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:48,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:48,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 167 transitions, 1193 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:48,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:48,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:48,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:48,952 INFO L124 PetriNetUnfolderBase]: 392/823 cut-off events. [2024-06-27 20:42:48,953 INFO L125 PetriNetUnfolderBase]: For 50506/50506 co-relation queries the response was YES. [2024-06-27 20:42:48,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3854 conditions, 823 events. 392/823 cut-off events. For 50506/50506 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4660 event pairs, 60 based on Foata normal form. 2/824 useless extension candidates. Maximal degree in co-relation 3749. Up to 672 conditions per place. [2024-06-27 20:42:48,958 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 160 selfloop transitions, 23 changer transitions 0/187 dead transitions. [2024-06-27 20:42:48,959 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 187 transitions, 1811 flow [2024-06-27 20:42:48,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:48,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:48,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-27 20:42:48,959 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-27 20:42:48,959 INFO L175 Difference]: Start difference. First operand has 241 places, 167 transitions, 1193 flow. Second operand 11 states and 145 transitions. [2024-06-27 20:42:48,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 187 transitions, 1811 flow [2024-06-27 20:42:49,069 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 187 transitions, 1753 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-06-27 20:42:49,071 INFO L231 Difference]: Finished difference. Result has 238 places, 169 transitions, 1227 flow [2024-06-27 20:42:49,071 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1139, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1227, PETRI_PLACES=238, PETRI_TRANSITIONS=169} [2024-06-27 20:42:49,071 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-27 20:42:49,071 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 169 transitions, 1227 flow [2024-06-27 20:42:49,071 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:49,072 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:49,072 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 20:42:49,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2024-06-27 20:42:49,072 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 20:42:49,072 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:49,072 INFO L85 PathProgramCache]: Analyzing trace with hash -967939674, now seen corresponding path program 7 times [2024-06-27 20:42:49,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:49,072 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505022530] [2024-06-27 20:42:49,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:49,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:49,881 INFO 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 20:42:49,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:49,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505022530] [2024-06-27 20:42:49,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505022530] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:49,882 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:49,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:49,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399554756] [2024-06-27 20:42:49,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:49,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:49,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:49,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:49,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:49,998 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:49,999 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 169 transitions, 1227 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:49,999 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:49,999 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:49,999 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:50,341 INFO L124 PetriNetUnfolderBase]: 389/818 cut-off events. [2024-06-27 20:42:50,341 INFO L125 PetriNetUnfolderBase]: For 42439/42439 co-relation queries the response was YES. [2024-06-27 20:42:50,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3648 conditions, 818 events. 389/818 cut-off events. For 42439/42439 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4632 event pairs, 61 based on Foata normal form. 2/819 useless extension candidates. Maximal degree in co-relation 3544. Up to 692 conditions per place. [2024-06-27 20:42:50,347 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 159 selfloop transitions, 22 changer transitions 0/185 dead transitions. [2024-06-27 20:42:50,347 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 185 transitions, 1631 flow [2024-06-27 20:42:50,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:50,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:50,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 20:42:50,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-27 20:42:50,348 INFO L175 Difference]: Start difference. First operand has 238 places, 169 transitions, 1227 flow. Second operand 11 states and 141 transitions. [2024-06-27 20:42:50,348 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 185 transitions, 1631 flow [2024-06-27 20:42:50,443 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 185 transitions, 1570 flow, removed 16 selfloop flow, removed 7 redundant places. [2024-06-27 20:42:50,445 INFO L231 Difference]: Finished difference. Result has 242 places, 169 transitions, 1214 flow [2024-06-27 20:42:50,445 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1166, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=147, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1214, PETRI_PLACES=242, PETRI_TRANSITIONS=169} [2024-06-27 20:42:50,445 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 211 predicate places. [2024-06-27 20:42:50,445 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 169 transitions, 1214 flow [2024-06-27 20:42:50,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:50,446 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:50,446 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:42:50,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2024-06-27 20:42:50,446 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 20:42:50,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:50,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1850825608, now seen corresponding path program 8 times [2024-06-27 20:42:50,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:50,447 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116685596] [2024-06-27 20:42:50,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:50,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:50,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:51,194 INFO 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 20:42:51,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:51,194 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116685596] [2024-06-27 20:42:51,194 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116685596] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:51,194 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:51,194 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:51,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385837435] [2024-06-27 20:42:51,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:51,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:51,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:51,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:51,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:51,305 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:51,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 169 transitions, 1214 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:51,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:51,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:51,305 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:51,593 INFO L124 PetriNetUnfolderBase]: 400/839 cut-off events. [2024-06-27 20:42:51,593 INFO L125 PetriNetUnfolderBase]: For 50609/50609 co-relation queries the response was YES. [2024-06-27 20:42:51,598 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3932 conditions, 839 events. 400/839 cut-off events. For 50609/50609 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4763 event pairs, 62 based on Foata normal form. 2/840 useless extension candidates. Maximal degree in co-relation 3826. Up to 616 conditions per place. [2024-06-27 20:42:51,600 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 161 selfloop transitions, 25 changer transitions 0/190 dead transitions. [2024-06-27 20:42:51,600 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 252 places, 190 transitions, 1844 flow [2024-06-27 20:42:51,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:51,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:51,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 20:42:51,601 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-27 20:42:51,602 INFO L175 Difference]: Start difference. First operand has 242 places, 169 transitions, 1214 flow. Second operand 11 states and 146 transitions. [2024-06-27 20:42:51,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 252 places, 190 transitions, 1844 flow [2024-06-27 20:42:51,766 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 190 transitions, 1798 flow, removed 0 selfloop flow, removed 10 redundant places. [2024-06-27 20:42:51,768 INFO L231 Difference]: Finished difference. Result has 243 places, 171 transitions, 1264 flow [2024-06-27 20:42:51,768 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1168, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=169, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1264, PETRI_PLACES=243, PETRI_TRANSITIONS=171} [2024-06-27 20:42:51,768 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-27 20:42:51,768 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 171 transitions, 1264 flow [2024-06-27 20:42:51,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:51,769 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:51,769 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 20:42:51,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2024-06-27 20:42:51,769 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 20:42:51,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:51,769 INFO L85 PathProgramCache]: Analyzing trace with hash -1568761670, now seen corresponding path program 9 times [2024-06-27 20:42:51,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:51,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478927842] [2024-06-27 20:42:51,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:51,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:51,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:52,592 INFO 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 20:42:52,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:52,593 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478927842] [2024-06-27 20:42:52,593 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478927842] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:52,593 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:52,593 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:52,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [536084066] [2024-06-27 20:42:52,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:52,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:52,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:52,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:52,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:52,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:52,702 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 171 transitions, 1264 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:52,702 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:52,702 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:52,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:53,025 INFO L124 PetriNetUnfolderBase]: 404/846 cut-off events. [2024-06-27 20:42:53,025 INFO L125 PetriNetUnfolderBase]: For 52063/52065 co-relation queries the response was YES. [2024-06-27 20:42:53,030 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4028 conditions, 846 events. 404/846 cut-off events. For 52063/52065 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4817 event pairs, 70 based on Foata normal form. 2/847 useless extension candidates. Maximal degree in co-relation 3921. Up to 686 conditions per place. [2024-06-27 20:42:53,031 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 150 selfloop transitions, 33 changer transitions 0/187 dead transitions. [2024-06-27 20:42:53,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 187 transitions, 1688 flow [2024-06-27 20:42:53,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:53,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:53,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 142 transitions. [2024-06-27 20:42:53,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4034090909090909 [2024-06-27 20:42:53,033 INFO L175 Difference]: Start difference. First operand has 243 places, 171 transitions, 1264 flow. Second operand 11 states and 142 transitions. [2024-06-27 20:42:53,033 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 187 transitions, 1688 flow [2024-06-27 20:42:53,176 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 187 transitions, 1631 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-06-27 20:42:53,178 INFO L231 Difference]: Finished difference. Result has 247 places, 172 transitions, 1301 flow [2024-06-27 20:42:53,178 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1211, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1301, PETRI_PLACES=247, PETRI_TRANSITIONS=172} [2024-06-27 20:42:53,178 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-27 20:42:53,178 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 172 transitions, 1301 flow [2024-06-27 20:42:53,179 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:53,179 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:53,179 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 20:42:53,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2024-06-27 20:42:53,179 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 20:42:53,179 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:53,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1574268200, now seen corresponding path program 10 times [2024-06-27 20:42:53,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:53,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536244600] [2024-06-27 20:42:53,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:53,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:53,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:53,951 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 20:42:53,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:53,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536244600] [2024-06-27 20:42:53,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536244600] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:53,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:53,951 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:53,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932105705] [2024-06-27 20:42:53,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:53,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:53,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:53,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:53,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:54,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:54,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 172 transitions, 1301 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:54,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:54,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:54,055 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:54,338 INFO L124 PetriNetUnfolderBase]: 408/855 cut-off events. [2024-06-27 20:42:54,339 INFO L125 PetriNetUnfolderBase]: For 53113/53113 co-relation queries the response was YES. [2024-06-27 20:42:54,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4094 conditions, 855 events. 408/855 cut-off events. For 53113/53113 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4871 event pairs, 68 based on Foata normal form. 2/856 useless extension candidates. Maximal degree in co-relation 3985. Up to 690 conditions per place. [2024-06-27 20:42:54,345 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 163 selfloop transitions, 24 changer transitions 0/191 dead transitions. [2024-06-27 20:42:54,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 191 transitions, 1915 flow [2024-06-27 20:42:54,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:54,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:54,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 145 transitions. [2024-06-27 20:42:54,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4119318181818182 [2024-06-27 20:42:54,346 INFO L175 Difference]: Start difference. First operand has 247 places, 172 transitions, 1301 flow. Second operand 11 states and 145 transitions. [2024-06-27 20:42:54,346 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 191 transitions, 1915 flow [2024-06-27 20:42:54,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 248 places, 191 transitions, 1837 flow, removed 7 selfloop flow, removed 9 redundant places. [2024-06-27 20:42:54,472 INFO L231 Difference]: Finished difference. Result has 249 places, 173 transitions, 1295 flow [2024-06-27 20:42:54,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1223, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1295, PETRI_PLACES=249, PETRI_TRANSITIONS=173} [2024-06-27 20:42:54,473 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 218 predicate places. [2024-06-27 20:42:54,473 INFO L495 AbstractCegarLoop]: Abstraction has has 249 places, 173 transitions, 1295 flow [2024-06-27 20:42:54,473 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:54,473 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:54,473 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 20:42:54,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2024-06-27 20:42:54,473 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 20:42:54,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:54,474 INFO L85 PathProgramCache]: Analyzing trace with hash 1227965754, now seen corresponding path program 11 times [2024-06-27 20:42:54,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:54,474 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733081397] [2024-06-27 20:42:54,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:54,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:54,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:55,165 INFO 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 20:42:55,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:55,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733081397] [2024-06-27 20:42:55,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733081397] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:55,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:55,166 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:55,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706909911] [2024-06-27 20:42:55,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:55,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:55,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:55,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:55,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:55,278 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:55,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 249 places, 173 transitions, 1295 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:55,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:55,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:55,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:55,572 INFO L124 PetriNetUnfolderBase]: 405/850 cut-off events. [2024-06-27 20:42:55,573 INFO L125 PetriNetUnfolderBase]: For 46531/46531 co-relation queries the response was YES. [2024-06-27 20:42:55,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3870 conditions, 850 events. 405/850 cut-off events. For 46531/46531 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4855 event pairs, 69 based on Foata normal form. 2/851 useless extension candidates. Maximal degree in co-relation 3760. Up to 724 conditions per place. [2024-06-27 20:42:55,579 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 162 selfloop transitions, 23 changer transitions 0/189 dead transitions. [2024-06-27 20:42:55,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 189 transitions, 1707 flow [2024-06-27 20:42:55,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:55,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:55,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 141 transitions. [2024-06-27 20:42:55,580 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4005681818181818 [2024-06-27 20:42:55,580 INFO L175 Difference]: Start difference. First operand has 249 places, 173 transitions, 1295 flow. Second operand 11 states and 141 transitions. [2024-06-27 20:42:55,580 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 189 transitions, 1707 flow [2024-06-27 20:42:55,694 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 249 places, 189 transitions, 1614 flow, removed 15 selfloop flow, removed 10 redundant places. [2024-06-27 20:42:55,696 INFO L231 Difference]: Finished difference. Result has 250 places, 173 transitions, 1252 flow [2024-06-27 20:42:55,696 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1202, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1252, PETRI_PLACES=250, PETRI_TRANSITIONS=173} [2024-06-27 20:42:55,697 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 219 predicate places. [2024-06-27 20:42:55,697 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 173 transitions, 1252 flow [2024-06-27 20:42:55,697 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:55,697 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:55,697 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 20:42:55,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2024-06-27 20:42:55,697 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 20:42:55,697 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:55,698 INFO L85 PathProgramCache]: Analyzing trace with hash 467650116, now seen corresponding path program 2 times [2024-06-27 20:42:55,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:55,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342667951] [2024-06-27 20:42:55,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:55,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:55,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:56,521 INFO 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 20:42:56,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:56,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342667951] [2024-06-27 20:42:56,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342667951] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:56,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:56,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:42:56,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763241040] [2024-06-27 20:42:56,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:56,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:42:56,522 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:56,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:42:56,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:42:56,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:56,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 173 transitions, 1252 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:56,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:56,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:56,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:56,996 INFO L124 PetriNetUnfolderBase]: 435/915 cut-off events. [2024-06-27 20:42:56,996 INFO L125 PetriNetUnfolderBase]: For 90943/90945 co-relation queries the response was YES. [2024-06-27 20:42:57,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4927 conditions, 915 events. 435/915 cut-off events. For 90943/90945 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 5289 event pairs, 83 based on Foata normal form. 6/920 useless extension candidates. Maximal degree in co-relation 4817. Up to 683 conditions per place. [2024-06-27 20:42:57,001 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 149 selfloop transitions, 36 changer transitions 6/195 dead transitions. [2024-06-27 20:42:57,001 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 195 transitions, 1976 flow [2024-06-27 20:42:57,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:42:57,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:42:57,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-27 20:42:57,002 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-27 20:42:57,002 INFO L175 Difference]: Start difference. First operand has 250 places, 173 transitions, 1252 flow. Second operand 12 states and 159 transitions. [2024-06-27 20:42:57,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 195 transitions, 1976 flow [2024-06-27 20:42:57,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 195 transitions, 1924 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-06-27 20:42:57,214 INFO L231 Difference]: Finished difference. Result has 252 places, 171 transitions, 1264 flow [2024-06-27 20:42:57,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1200, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1264, PETRI_PLACES=252, PETRI_TRANSITIONS=171} [2024-06-27 20:42:57,214 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-27 20:42:57,214 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 171 transitions, 1264 flow [2024-06-27 20:42:57,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:57,214 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:57,215 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 20:42:57,215 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2024-06-27 20:42:57,215 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 20:42:57,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:57,215 INFO L85 PathProgramCache]: Analyzing trace with hash 467323686, now seen corresponding path program 3 times [2024-06-27 20:42:57,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:57,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845230318] [2024-06-27 20:42:57,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:57,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:57,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:58,167 INFO 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 20:42:58,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:58,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845230318] [2024-06-27 20:42:58,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845230318] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:58,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:58,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:42:58,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47804290] [2024-06-27 20:42:58,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:58,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:42:58,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:58,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:42:58,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:42:58,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:58,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 171 transitions, 1264 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:58,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:58,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:58,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:58,636 INFO L124 PetriNetUnfolderBase]: 411/864 cut-off events. [2024-06-27 20:42:58,637 INFO L125 PetriNetUnfolderBase]: For 72547/72547 co-relation queries the response was YES. [2024-06-27 20:42:58,642 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3978 conditions, 864 events. 411/864 cut-off events. For 72547/72547 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4956 event pairs, 73 based on Foata normal form. 8/871 useless extension candidates. Maximal degree in co-relation 3867. Up to 718 conditions per place. [2024-06-27 20:42:58,644 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 154 selfloop transitions, 19 changer transitions 13/190 dead transitions. [2024-06-27 20:42:58,644 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 190 transitions, 1754 flow [2024-06-27 20:42:58,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:42:58,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:42:58,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-27 20:42:58,645 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 20:42:58,645 INFO L175 Difference]: Start difference. First operand has 252 places, 171 transitions, 1264 flow. Second operand 12 states and 152 transitions. [2024-06-27 20:42:58,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 190 transitions, 1754 flow [2024-06-27 20:42:58,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 190 transitions, 1680 flow, removed 2 selfloop flow, removed 11 redundant places. [2024-06-27 20:42:58,770 INFO L231 Difference]: Finished difference. Result has 251 places, 166 transitions, 1199 flow [2024-06-27 20:42:58,770 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1190, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1199, PETRI_PLACES=251, PETRI_TRANSITIONS=166} [2024-06-27 20:42:58,770 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-27 20:42:58,770 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 166 transitions, 1199 flow [2024-06-27 20:42:58,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:58,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:42:58,771 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 20:42:58,771 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2024-06-27 20:42:58,771 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 20:42:58,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:42:58,771 INFO L85 PathProgramCache]: Analyzing trace with hash 1535358502, now seen corresponding path program 12 times [2024-06-27 20:42:58,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:42:58,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068971049] [2024-06-27 20:42:58,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:42:58,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:42:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:42:59,517 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 20:42:59,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:42:59,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068971049] [2024-06-27 20:42:59,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068971049] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:42:59,518 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:42:59,518 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:42:59,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199526500] [2024-06-27 20:42:59,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:42:59,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:42:59,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:42:59,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:42:59,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:42:59,644 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:42:59,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 166 transitions, 1199 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:42:59,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:42:59,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:42:59,645 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:42:59,921 INFO L124 PetriNetUnfolderBase]: 396/827 cut-off events. [2024-06-27 20:42:59,921 INFO L125 PetriNetUnfolderBase]: For 47410/47410 co-relation queries the response was YES. [2024-06-27 20:42:59,926 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3738 conditions, 827 events. 396/827 cut-off events. For 47410/47410 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4693 event pairs, 72 based on Foata normal form. 2/825 useless extension candidates. Maximal degree in co-relation 3628. Up to 640 conditions per place. [2024-06-27 20:42:59,928 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 136 selfloop transitions, 41 changer transitions 0/181 dead transitions. [2024-06-27 20:42:59,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 181 transitions, 1609 flow [2024-06-27 20:42:59,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:42:59,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:42:59,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 146 transitions. [2024-06-27 20:42:59,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4147727272727273 [2024-06-27 20:42:59,929 INFO L175 Difference]: Start difference. First operand has 251 places, 166 transitions, 1199 flow. Second operand 11 states and 146 transitions. [2024-06-27 20:42:59,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 181 transitions, 1609 flow [2024-06-27 20:43:00,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 181 transitions, 1549 flow, removed 11 selfloop flow, removed 11 redundant places. [2024-06-27 20:43:00,065 INFO L231 Difference]: Finished difference. Result has 243 places, 167 transitions, 1247 flow [2024-06-27 20:43:00,065 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1141, PETRI_DIFFERENCE_MINUEND_PLACES=232, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1247, PETRI_PLACES=243, PETRI_TRANSITIONS=167} [2024-06-27 20:43:00,065 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-27 20:43:00,066 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 167 transitions, 1247 flow [2024-06-27 20:43:00,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:00,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:00,066 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 20:43:00,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2024-06-27 20:43:00,066 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 20:43:00,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:00,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1234609852, now seen corresponding path program 13 times [2024-06-27 20:43:00,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:00,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974194585] [2024-06-27 20:43:00,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:00,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:00,817 INFO 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 20:43:00,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:00,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974194585] [2024-06-27 20:43:00,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974194585] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:00,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:00,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:00,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862252299] [2024-06-27 20:43:00,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:00,818 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:00,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:00,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:00,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:00,913 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:00,913 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 167 transitions, 1247 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:00,913 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:00,913 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:00,913 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:01,200 INFO L124 PetriNetUnfolderBase]: 400/835 cut-off events. [2024-06-27 20:43:01,200 INFO L125 PetriNetUnfolderBase]: For 44476/44476 co-relation queries the response was YES. [2024-06-27 20:43:01,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3772 conditions, 835 events. 400/835 cut-off events. For 44476/44476 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 4747 event pairs, 74 based on Foata normal form. 2/833 useless extension candidates. Maximal degree in co-relation 3665. Up to 648 conditions per place. [2024-06-27 20:43:01,206 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 136 selfloop transitions, 42 changer transitions 0/182 dead transitions. [2024-06-27 20:43:01,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 182 transitions, 1659 flow [2024-06-27 20:43:01,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:01,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:01,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 20:43:01,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 20:43:01,206 INFO L175 Difference]: Start difference. First operand has 243 places, 167 transitions, 1247 flow. Second operand 11 states and 143 transitions. [2024-06-27 20:43:01,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 182 transitions, 1659 flow [2024-06-27 20:43:01,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 182 transitions, 1563 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-06-27 20:43:01,311 INFO L231 Difference]: Finished difference. Result has 245 places, 168 transitions, 1261 flow [2024-06-27 20:43:01,312 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1151, PETRI_DIFFERENCE_MINUEND_PLACES=234, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=167, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1261, PETRI_PLACES=245, PETRI_TRANSITIONS=168} [2024-06-27 20:43:01,312 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-27 20:43:01,312 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 168 transitions, 1261 flow [2024-06-27 20:43:01,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:01,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:01,312 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 20:43:01,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2024-06-27 20:43:01,313 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 20:43:01,313 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:01,313 INFO L85 PathProgramCache]: Analyzing trace with hash 1997723844, now seen corresponding path program 14 times [2024-06-27 20:43:01,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:01,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616316122] [2024-06-27 20:43:01,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:01,313 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:01,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:02,047 INFO 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 20:43:02,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:02,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616316122] [2024-06-27 20:43:02,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616316122] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:02,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:02,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:02,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518675850] [2024-06-27 20:43:02,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:02,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:02,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:02,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:02,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:02,175 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:02,175 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 168 transitions, 1261 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:02,175 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:02,175 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:02,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:02,423 INFO L124 PetriNetUnfolderBase]: 411/856 cut-off events. [2024-06-27 20:43:02,423 INFO L125 PetriNetUnfolderBase]: For 53293/53293 co-relation queries the response was YES. [2024-06-27 20:43:02,427 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4083 conditions, 856 events. 411/856 cut-off events. For 53293/53293 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4898 event pairs, 77 based on Foata normal form. 2/854 useless extension candidates. Maximal degree in co-relation 3975. Up to 616 conditions per place. [2024-06-27 20:43:02,429 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 137 selfloop transitions, 45 changer transitions 0/186 dead transitions. [2024-06-27 20:43:02,429 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 186 transitions, 1883 flow [2024-06-27 20:43:02,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:02,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:02,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 20:43:02,430 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-27 20:43:02,430 INFO L175 Difference]: Start difference. First operand has 245 places, 168 transitions, 1261 flow. Second operand 11 states and 147 transitions. [2024-06-27 20:43:02,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 186 transitions, 1883 flow [2024-06-27 20:43:02,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 186 transitions, 1783 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-06-27 20:43:02,555 INFO L231 Difference]: Finished difference. Result has 247 places, 170 transitions, 1301 flow [2024-06-27 20:43:02,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1161, PETRI_DIFFERENCE_MINUEND_PLACES=236, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1301, PETRI_PLACES=247, PETRI_TRANSITIONS=170} [2024-06-27 20:43:02,555 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 216 predicate places. [2024-06-27 20:43:02,555 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 170 transitions, 1301 flow [2024-06-27 20:43:02,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:02,556 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:02,556 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 20:43:02,556 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2024-06-27 20:43:02,556 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 20:43:02,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:02,556 INFO L85 PathProgramCache]: Analyzing trace with hash -499725816, now seen corresponding path program 15 times [2024-06-27 20:43:02,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:02,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172845616] [2024-06-27 20:43:02,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:02,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:02,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:03,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:03,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:03,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172845616] [2024-06-27 20:43:03,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172845616] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:03,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:03,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:03,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398084173] [2024-06-27 20:43:03,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:03,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:03,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:03,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:03,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:03,415 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:03,415 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 170 transitions, 1301 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:03,415 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:03,415 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:03,415 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:03,680 INFO L124 PetriNetUnfolderBase]: 408/851 cut-off events. [2024-06-27 20:43:03,680 INFO L125 PetriNetUnfolderBase]: For 46774/46774 co-relation queries the response was YES. [2024-06-27 20:43:03,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3882 conditions, 851 events. 408/851 cut-off events. For 46774/46774 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 4863 event pairs, 78 based on Foata normal form. 2/849 useless extension candidates. Maximal degree in co-relation 3773. Up to 664 conditions per place. [2024-06-27 20:43:03,687 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 133 selfloop transitions, 47 changer transitions 0/184 dead transitions. [2024-06-27 20:43:03,687 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 257 places, 184 transitions, 1697 flow [2024-06-27 20:43:03,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:03,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:03,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 143 transitions. [2024-06-27 20:43:03,688 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 20:43:03,688 INFO L175 Difference]: Start difference. First operand has 247 places, 170 transitions, 1301 flow. Second operand 11 states and 143 transitions. [2024-06-27 20:43:03,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 257 places, 184 transitions, 1697 flow [2024-06-27 20:43:03,799 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 184 transitions, 1605 flow, removed 18 selfloop flow, removed 7 redundant places. [2024-06-27 20:43:03,801 INFO L231 Difference]: Finished difference. Result has 251 places, 170 transitions, 1307 flow [2024-06-27 20:43:03,801 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1209, PETRI_DIFFERENCE_MINUEND_PLACES=240, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1307, PETRI_PLACES=251, PETRI_TRANSITIONS=170} [2024-06-27 20:43:03,801 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-27 20:43:03,801 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 170 transitions, 1307 flow [2024-06-27 20:43:03,801 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:03,802 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:03,802 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 20:43:03,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2024-06-27 20:43:03,802 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 20:43:03,802 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:03,802 INFO L85 PathProgramCache]: Analyzing trace with hash -1908041260, now seen corresponding path program 16 times [2024-06-27 20:43:03,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:03,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593367260] [2024-06-27 20:43:03,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:03,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:04,549 INFO 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 20:43:04,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:04,549 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593367260] [2024-06-27 20:43:04,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593367260] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:04,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:04,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:04,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284140672] [2024-06-27 20:43:04,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:04,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:04,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:04,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:04,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:04,660 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:04,661 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 170 transitions, 1307 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:04,661 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:04,661 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:04,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:04,941 INFO L124 PetriNetUnfolderBase]: 412/859 cut-off events. [2024-06-27 20:43:04,941 INFO L125 PetriNetUnfolderBase]: For 47615/47615 co-relation queries the response was YES. [2024-06-27 20:43:04,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3952 conditions, 859 events. 412/859 cut-off events. For 47615/47615 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 4908 event pairs, 80 based on Foata normal form. 2/857 useless extension candidates. Maximal degree in co-relation 3841. Up to 672 conditions per place. [2024-06-27 20:43:04,948 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 142 selfloop transitions, 39 changer transitions 0/185 dead transitions. [2024-06-27 20:43:04,948 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 185 transitions, 1729 flow [2024-06-27 20:43:04,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:04,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:04,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 20:43:04,949 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-27 20:43:04,949 INFO L175 Difference]: Start difference. First operand has 251 places, 170 transitions, 1307 flow. Second operand 11 states and 147 transitions. [2024-06-27 20:43:04,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 185 transitions, 1729 flow [2024-06-27 20:43:05,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 185 transitions, 1625 flow, removed 2 selfloop flow, removed 10 redundant places. [2024-06-27 20:43:05,078 INFO L231 Difference]: Finished difference. Result has 252 places, 171 transitions, 1311 flow [2024-06-27 20:43:05,078 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1203, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=38, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1311, PETRI_PLACES=252, PETRI_TRANSITIONS=171} [2024-06-27 20:43:05,078 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 221 predicate places. [2024-06-27 20:43:05,078 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 171 transitions, 1311 flow [2024-06-27 20:43:05,079 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:05,079 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:05,079 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 20:43:05,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2024-06-27 20:43:05,079 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 20:43:05,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:05,079 INFO L85 PathProgramCache]: Analyzing trace with hash -1740860920, now seen corresponding path program 17 times [2024-06-27 20:43:05,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:05,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1306374584] [2024-06-27 20:43:05,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:05,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:05,815 INFO 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 20:43:05,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:05,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1306374584] [2024-06-27 20:43:05,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1306374584] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:05,815 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:05,815 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:05,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514469997] [2024-06-27 20:43:05,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:05,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:05,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:05,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:05,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:05,918 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:05,918 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 171 transitions, 1311 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:05,918 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:05,918 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:05,918 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:06,210 INFO L124 PetriNetUnfolderBase]: 416/867 cut-off events. [2024-06-27 20:43:06,210 INFO L125 PetriNetUnfolderBase]: For 48978/48978 co-relation queries the response was YES. [2024-06-27 20:43:06,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4009 conditions, 867 events. 416/867 cut-off events. For 48978/48978 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 4989 event pairs, 82 based on Foata normal form. 2/865 useless extension candidates. Maximal degree in co-relation 3897. Up to 680 conditions per place. [2024-06-27 20:43:06,216 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 142 selfloop transitions, 40 changer transitions 0/186 dead transitions. [2024-06-27 20:43:06,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 186 transitions, 1737 flow [2024-06-27 20:43:06,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:06,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:06,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 20:43:06,217 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-27 20:43:06,217 INFO L175 Difference]: Start difference. First operand has 252 places, 171 transitions, 1311 flow. Second operand 11 states and 147 transitions. [2024-06-27 20:43:06,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 186 transitions, 1737 flow [2024-06-27 20:43:06,343 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 253 places, 186 transitions, 1639 flow, removed 11 selfloop flow, removed 9 redundant places. [2024-06-27 20:43:06,345 INFO L231 Difference]: Finished difference. Result has 254 places, 172 transitions, 1325 flow [2024-06-27 20:43:06,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1213, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=39, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1325, PETRI_PLACES=254, PETRI_TRANSITIONS=172} [2024-06-27 20:43:06,346 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 223 predicate places. [2024-06-27 20:43:06,346 INFO L495 AbstractCegarLoop]: Abstraction has has 254 places, 172 transitions, 1325 flow [2024-06-27 20:43:06,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:06,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:06,346 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 20:43:06,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2024-06-27 20:43:06,346 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 20:43:06,346 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:06,346 INFO L85 PathProgramCache]: Analyzing trace with hash -900104222, now seen corresponding path program 18 times [2024-06-27 20:43:06,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:06,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547157580] [2024-06-27 20:43:06,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:06,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:07,060 INFO 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 20:43:07,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:07,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547157580] [2024-06-27 20:43:07,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547157580] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:07,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:07,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:07,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619450440] [2024-06-27 20:43:07,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:07,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:07,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:07,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:07,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:07,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:07,148 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 254 places, 172 transitions, 1325 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:07,148 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:07,148 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:07,148 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:07,429 INFO L124 PetriNetUnfolderBase]: 420/875 cut-off events. [2024-06-27 20:43:07,429 INFO L125 PetriNetUnfolderBase]: For 50173/50173 co-relation queries the response was YES. [2024-06-27 20:43:07,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4060 conditions, 875 events. 420/875 cut-off events. For 50173/50173 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5043 event pairs, 82 based on Foata normal form. 2/873 useless extension candidates. Maximal degree in co-relation 3947. Up to 652 conditions per place. [2024-06-27 20:43:07,436 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 143 selfloop transitions, 41 changer transitions 0/188 dead transitions. [2024-06-27 20:43:07,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 188 transitions, 1759 flow [2024-06-27 20:43:07,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:07,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:07,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 150 transitions. [2024-06-27 20:43:07,437 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42613636363636365 [2024-06-27 20:43:07,437 INFO L175 Difference]: Start difference. First operand has 254 places, 172 transitions, 1325 flow. Second operand 11 states and 150 transitions. [2024-06-27 20:43:07,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 188 transitions, 1759 flow [2024-06-27 20:43:07,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 188 transitions, 1657 flow, removed 12 selfloop flow, removed 9 redundant places. [2024-06-27 20:43:07,570 INFO L231 Difference]: Finished difference. Result has 256 places, 173 transitions, 1339 flow [2024-06-27 20:43:07,571 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1223, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1339, PETRI_PLACES=256, PETRI_TRANSITIONS=173} [2024-06-27 20:43:07,571 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 225 predicate places. [2024-06-27 20:43:07,571 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 173 transitions, 1339 flow [2024-06-27 20:43:07,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:07,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:07,571 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 20:43:07,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2024-06-27 20:43:07,572 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 20:43:07,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:07,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1856815852, now seen corresponding path program 19 times [2024-06-27 20:43:07,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:07,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318566661] [2024-06-27 20:43:07,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:07,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:08,349 INFO 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 20:43:08,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:08,349 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318566661] [2024-06-27 20:43:08,349 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318566661] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:08,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:08,350 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:08,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079102131] [2024-06-27 20:43:08,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:08,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:08,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:08,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:08,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:08,448 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:08,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 173 transitions, 1339 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:08,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:08,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:08,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:08,791 INFO L124 PetriNetUnfolderBase]: 424/883 cut-off events. [2024-06-27 20:43:08,792 INFO L125 PetriNetUnfolderBase]: For 51414/51414 co-relation queries the response was YES. [2024-06-27 20:43:08,797 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4117 conditions, 883 events. 424/883 cut-off events. For 51414/51414 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 5096 event pairs, 86 based on Foata normal form. 2/881 useless extension candidates. Maximal degree in co-relation 4003. Up to 696 conditions per place. [2024-06-27 20:43:08,799 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 142 selfloop transitions, 42 changer transitions 0/188 dead transitions. [2024-06-27 20:43:08,799 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 266 places, 188 transitions, 1773 flow [2024-06-27 20:43:08,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:08,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:08,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 144 transitions. [2024-06-27 20:43:08,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4090909090909091 [2024-06-27 20:43:08,800 INFO L175 Difference]: Start difference. First operand has 256 places, 173 transitions, 1339 flow. Second operand 11 states and 144 transitions. [2024-06-27 20:43:08,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 266 places, 188 transitions, 1773 flow [2024-06-27 20:43:08,926 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 257 places, 188 transitions, 1667 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-06-27 20:43:08,928 INFO L231 Difference]: Finished difference. Result has 258 places, 174 transitions, 1353 flow [2024-06-27 20:43:08,929 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1233, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1353, PETRI_PLACES=258, PETRI_TRANSITIONS=174} [2024-06-27 20:43:08,929 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 227 predicate places. [2024-06-27 20:43:08,929 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 174 transitions, 1353 flow [2024-06-27 20:43:08,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:08,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:08,929 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 20:43:08,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2024-06-27 20:43:08,930 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 20:43:08,930 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:08,930 INFO L85 PathProgramCache]: Analyzing trace with hash 1856671702, now seen corresponding path program 20 times [2024-06-27 20:43:08,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:08,930 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931288846] [2024-06-27 20:43:08,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:08,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:09,687 INFO 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 20:43:09,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:09,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931288846] [2024-06-27 20:43:09,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931288846] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:09,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:09,687 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:09,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384969862] [2024-06-27 20:43:09,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:09,688 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:09,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:09,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:09,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:09,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:09,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 258 places, 174 transitions, 1353 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:09,822 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:09,822 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:09,822 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:10,108 INFO L124 PetriNetUnfolderBase]: 428/891 cut-off events. [2024-06-27 20:43:10,108 INFO L125 PetriNetUnfolderBase]: For 52697/52697 co-relation queries the response was YES. [2024-06-27 20:43:10,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4162 conditions, 891 events. 428/891 cut-off events. For 52697/52697 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5155 event pairs, 86 based on Foata normal form. 2/889 useless extension candidates. Maximal degree in co-relation 4047. Up to 682 conditions per place. [2024-06-27 20:43:10,115 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 143 selfloop transitions, 43 changer transitions 0/190 dead transitions. [2024-06-27 20:43:10,115 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 190 transitions, 1795 flow [2024-06-27 20:43:10,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:10,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:10,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 147 transitions. [2024-06-27 20:43:10,115 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41761363636363635 [2024-06-27 20:43:10,116 INFO L175 Difference]: Start difference. First operand has 258 places, 174 transitions, 1353 flow. Second operand 11 states and 147 transitions. [2024-06-27 20:43:10,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 190 transitions, 1795 flow [2024-06-27 20:43:10,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 259 places, 190 transitions, 1685 flow, removed 14 selfloop flow, removed 9 redundant places. [2024-06-27 20:43:10,258 INFO L231 Difference]: Finished difference. Result has 260 places, 175 transitions, 1367 flow [2024-06-27 20:43:10,258 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1243, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1367, PETRI_PLACES=260, PETRI_TRANSITIONS=175} [2024-06-27 20:43:10,258 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 229 predicate places. [2024-06-27 20:43:10,258 INFO L495 AbstractCegarLoop]: Abstraction has has 260 places, 175 transitions, 1367 flow [2024-06-27 20:43:10,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:10,258 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:10,259 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 20:43:10,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2024-06-27 20:43:10,259 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 20:43:10,259 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:10,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1714568632, now seen corresponding path program 21 times [2024-06-27 20:43:10,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:10,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [461807136] [2024-06-27 20:43:10,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:10,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:11,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:11,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:11,056 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [461807136] [2024-06-27 20:43:11,056 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [461807136] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:11,056 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:11,056 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-06-27 20:43:11,056 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730577341] [2024-06-27 20:43:11,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:11,056 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-06-27 20:43:11,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:11,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-06-27 20:43:11,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2024-06-27 20:43:11,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:11,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 260 places, 175 transitions, 1367 flow. Second operand has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:11,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:11,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:11,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:11,441 INFO L124 PetriNetUnfolderBase]: 425/886 cut-off events. [2024-06-27 20:43:11,441 INFO L125 PetriNetUnfolderBase]: For 44736/44736 co-relation queries the response was YES. [2024-06-27 20:43:11,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3907 conditions, 886 events. 425/886 cut-off events. For 44736/44736 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5127 event pairs, 83 based on Foata normal form. 2/884 useless extension candidates. Maximal degree in co-relation 3791. Up to 533 conditions per place. [2024-06-27 20:43:11,448 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 136 selfloop transitions, 51 changer transitions 0/191 dead transitions. [2024-06-27 20:43:11,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 191 transitions, 1781 flow [2024-06-27 20:43:11,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-06-27 20:43:11,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-06-27 20:43:11,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 148 transitions. [2024-06-27 20:43:11,449 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42045454545454547 [2024-06-27 20:43:11,449 INFO L175 Difference]: Start difference. First operand has 260 places, 175 transitions, 1367 flow. Second operand 11 states and 148 transitions. [2024-06-27 20:43:11,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 191 transitions, 1781 flow [2024-06-27 20:43:11,592 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 191 transitions, 1667 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-06-27 20:43:11,594 INFO L231 Difference]: Finished difference. Result has 262 places, 175 transitions, 1359 flow [2024-06-27 20:43:11,594 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1253, PETRI_DIFFERENCE_MINUEND_PLACES=251, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1359, PETRI_PLACES=262, PETRI_TRANSITIONS=175} [2024-06-27 20:43:11,594 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 231 predicate places. [2024-06-27 20:43:11,594 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 175 transitions, 1359 flow [2024-06-27 20:43:11,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.25) internal successors, (111), 12 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:11,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:11,595 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 20:43:11,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2024-06-27 20:43:11,595 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 20:43:11,595 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:11,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1141416234, now seen corresponding path program 4 times [2024-06-27 20:43:11,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:11,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11036758] [2024-06-27 20:43:11,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:11,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:12,493 INFO 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 20:43:12,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:12,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11036758] [2024-06-27 20:43:12,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11036758] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:12,494 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:12,494 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:12,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1391589489] [2024-06-27 20:43:12,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:12,494 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:12,494 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:12,494 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:12,494 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:12,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:12,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 175 transitions, 1359 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:12,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:12,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:12,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:12,930 INFO L124 PetriNetUnfolderBase]: 437/916 cut-off events. [2024-06-27 20:43:12,930 INFO L125 PetriNetUnfolderBase]: For 70402/70402 co-relation queries the response was YES. [2024-06-27 20:43:12,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4076 conditions, 916 events. 437/916 cut-off events. For 70402/70402 co-relation queries the response was YES. Maximal size of possible extension queue 98. Compared 5308 event pairs, 100 based on Foata normal form. 8/916 useless extension candidates. Maximal degree in co-relation 3959. Up to 668 conditions per place. [2024-06-27 20:43:12,937 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 130 selfloop transitions, 48 changer transitions 9/191 dead transitions. [2024-06-27 20:43:12,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 273 places, 191 transitions, 1829 flow [2024-06-27 20:43:12,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:12,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:12,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 160 transitions. [2024-06-27 20:43:12,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-06-27 20:43:12,938 INFO L175 Difference]: Start difference. First operand has 262 places, 175 transitions, 1359 flow. Second operand 12 states and 160 transitions. [2024-06-27 20:43:12,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 273 places, 191 transitions, 1829 flow [2024-06-27 20:43:13,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 260 places, 191 transitions, 1600 flow, removed 16 selfloop flow, removed 13 redundant places. [2024-06-27 20:43:13,101 INFO L231 Difference]: Finished difference. Result has 261 places, 172 transitions, 1214 flow [2024-06-27 20:43:13,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1130, PETRI_DIFFERENCE_MINUEND_PLACES=249, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1214, PETRI_PLACES=261, PETRI_TRANSITIONS=172} [2024-06-27 20:43:13,101 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 230 predicate places. [2024-06-27 20:43:13,102 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 172 transitions, 1214 flow [2024-06-27 20:43:13,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:13,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:13,102 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 20:43:13,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2024-06-27 20:43:13,102 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 20:43:13,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:13,102 INFO L85 PathProgramCache]: Analyzing trace with hash -14288632, now seen corresponding path program 5 times [2024-06-27 20:43:13,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:13,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [481623341] [2024-06-27 20:43:13,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:13,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:13,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:13,967 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 20:43:13,967 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:13,967 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [481623341] [2024-06-27 20:43:13,967 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [481623341] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:13,967 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:13,967 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:13,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502532850] [2024-06-27 20:43:13,968 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:13,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:13,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:13,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:13,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:14,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:14,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 172 transitions, 1214 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:14,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:14,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:14,126 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:14,444 INFO L124 PetriNetUnfolderBase]: 428/899 cut-off events. [2024-06-27 20:43:14,445 INFO L125 PetriNetUnfolderBase]: For 61920/61920 co-relation queries the response was YES. [2024-06-27 20:43:14,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3694 conditions, 899 events. 428/899 cut-off events. For 61920/61920 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 5217 event pairs, 94 based on Foata normal form. 6/897 useless extension candidates. Maximal degree in co-relation 3579. Up to 658 conditions per place. [2024-06-27 20:43:14,452 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 127 selfloop transitions, 45 changer transitions 12/188 dead transitions. [2024-06-27 20:43:14,452 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 188 transitions, 1656 flow [2024-06-27 20:43:14,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:14,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:14,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-27 20:43:14,452 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-06-27 20:43:14,452 INFO L175 Difference]: Start difference. First operand has 261 places, 172 transitions, 1214 flow. Second operand 12 states and 158 transitions. [2024-06-27 20:43:14,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 188 transitions, 1656 flow [2024-06-27 20:43:14,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 258 places, 188 transitions, 1550 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 20:43:14,591 INFO L231 Difference]: Finished difference. Result has 259 places, 168 transitions, 1180 flow [2024-06-27 20:43:14,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1110, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1180, PETRI_PLACES=259, PETRI_TRANSITIONS=168} [2024-06-27 20:43:14,592 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 228 predicate places. [2024-06-27 20:43:14,592 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 168 transitions, 1180 flow [2024-06-27 20:43:14,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:14,592 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:14,592 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 20:43:14,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2024-06-27 20:43:14,592 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 20:43:14,592 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:14,592 INFO L85 PathProgramCache]: Analyzing trace with hash 521236454, now seen corresponding path program 6 times [2024-06-27 20:43:14,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:14,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057199487] [2024-06-27 20:43:14,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:14,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:14,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:15,502 INFO 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 20:43:15,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:15,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057199487] [2024-06-27 20:43:15,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057199487] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:15,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:15,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:15,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967648409] [2024-06-27 20:43:15,502 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:15,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:15,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:15,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:15,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:15,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:15,649 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 168 transitions, 1180 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:15,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:15,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:15,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:15,990 INFO L124 PetriNetUnfolderBase]: 424/891 cut-off events. [2024-06-27 20:43:15,990 INFO L125 PetriNetUnfolderBase]: For 71471/71471 co-relation queries the response was YES. [2024-06-27 20:43:15,995 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3671 conditions, 891 events. 424/891 cut-off events. For 71471/71471 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 5127 event pairs, 100 based on Foata normal form. 8/891 useless extension candidates. Maximal degree in co-relation 3557. Up to 648 conditions per place. [2024-06-27 20:43:15,997 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 121 selfloop transitions, 50 changer transitions 9/184 dead transitions. [2024-06-27 20:43:15,997 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 263 places, 184 transitions, 1632 flow [2024-06-27 20:43:15,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:15,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:15,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 159 transitions. [2024-06-27 20:43:15,998 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4140625 [2024-06-27 20:43:15,998 INFO L175 Difference]: Start difference. First operand has 259 places, 168 transitions, 1180 flow. Second operand 12 states and 159 transitions. [2024-06-27 20:43:15,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 263 places, 184 transitions, 1632 flow [2024-06-27 20:43:16,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 184 transitions, 1526 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-27 20:43:16,151 INFO L231 Difference]: Finished difference. Result has 253 places, 165 transitions, 1166 flow [2024-06-27 20:43:16,151 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1078, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1166, PETRI_PLACES=253, PETRI_TRANSITIONS=165} [2024-06-27 20:43:16,151 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 222 predicate places. [2024-06-27 20:43:16,151 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 165 transitions, 1166 flow [2024-06-27 20:43:16,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:16,152 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:16,152 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 20:43:16,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2024-06-27 20:43:16,152 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 20:43:16,152 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:16,152 INFO L85 PathProgramCache]: Analyzing trace with hash 521562884, now seen corresponding path program 7 times [2024-06-27 20:43:16,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:16,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [464016710] [2024-06-27 20:43:16,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:16,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:16,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:17,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:17,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:17,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [464016710] [2024-06-27 20:43:17,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [464016710] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:17,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:17,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:17,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118590681] [2024-06-27 20:43:17,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:17,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:17,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:17,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:17,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:17,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:17,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 165 transitions, 1166 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:17,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:17,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:17,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:17,723 INFO L124 PetriNetUnfolderBase]: 415/876 cut-off events. [2024-06-27 20:43:17,723 INFO L125 PetriNetUnfolderBase]: For 57120/57120 co-relation queries the response was YES. [2024-06-27 20:43:17,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3560 conditions, 876 events. 415/876 cut-off events. For 57120/57120 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 5062 event pairs, 89 based on Foata normal form. 6/878 useless extension candidates. Maximal degree in co-relation 3449. Up to 673 conditions per place. [2024-06-27 20:43:17,730 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 130 selfloop transitions, 36 changer transitions 12/182 dead transitions. [2024-06-27 20:43:17,730 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 182 transitions, 1598 flow [2024-06-27 20:43:17,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:17,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:17,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-27 20:43:17,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 20:43:17,731 INFO L175 Difference]: Start difference. First operand has 253 places, 165 transitions, 1166 flow. Second operand 12 states and 156 transitions. [2024-06-27 20:43:17,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 261 places, 182 transitions, 1598 flow [2024-06-27 20:43:17,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 182 transitions, 1488 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 20:43:17,843 INFO L231 Difference]: Finished difference. Result has 251 places, 161 transitions, 1110 flow [2024-06-27 20:43:17,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1058, PETRI_DIFFERENCE_MINUEND_PLACES=239, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1110, PETRI_PLACES=251, PETRI_TRANSITIONS=161} [2024-06-27 20:43:17,844 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 220 predicate places. [2024-06-27 20:43:17,844 INFO L495 AbstractCegarLoop]: Abstraction has has 251 places, 161 transitions, 1110 flow [2024-06-27 20:43:17,844 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:17,844 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:17,844 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 20:43:17,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2024-06-27 20:43:17,844 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 20:43:17,844 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:17,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1549228250, now seen corresponding path program 8 times [2024-06-27 20:43:17,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:17,845 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832507412] [2024-06-27 20:43:17,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:17,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:17,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:18,694 INFO 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 20:43:18,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:18,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832507412] [2024-06-27 20:43:18,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832507412] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:18,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:18,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:18,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894702858] [2024-06-27 20:43:18,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:18,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:18,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:18,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:18,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:18,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:18,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 251 places, 161 transitions, 1110 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:18,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:18,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:18,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:19,088 INFO L124 PetriNetUnfolderBase]: 411/866 cut-off events. [2024-06-27 20:43:19,088 INFO L125 PetriNetUnfolderBase]: For 64398/64398 co-relation queries the response was YES. [2024-06-27 20:43:19,092 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3504 conditions, 866 events. 411/866 cut-off events. For 64398/64398 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 4945 event pairs, 100 based on Foata normal form. 8/866 useless extension candidates. Maximal degree in co-relation 3394. Up to 628 conditions per place. [2024-06-27 20:43:19,093 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 108 selfloop transitions, 56 changer transitions 9/177 dead transitions. [2024-06-27 20:43:19,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 177 transitions, 1540 flow [2024-06-27 20:43:19,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:19,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:19,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 158 transitions. [2024-06-27 20:43:19,094 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4114583333333333 [2024-06-27 20:43:19,094 INFO L175 Difference]: Start difference. First operand has 251 places, 161 transitions, 1110 flow. Second operand 12 states and 158 transitions. [2024-06-27 20:43:19,094 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 177 transitions, 1540 flow [2024-06-27 20:43:19,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 177 transitions, 1452 flow, removed 8 selfloop flow, removed 11 redundant places. [2024-06-27 20:43:19,200 INFO L231 Difference]: Finished difference. Result has 245 places, 158 transitions, 1126 flow [2024-06-27 20:43:19,200 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1026, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1126, PETRI_PLACES=245, PETRI_TRANSITIONS=158} [2024-06-27 20:43:19,200 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 214 predicate places. [2024-06-27 20:43:19,200 INFO L495 AbstractCegarLoop]: Abstraction has has 245 places, 158 transitions, 1126 flow [2024-06-27 20:43:19,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:19,200 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:19,201 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 20:43:19,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2024-06-27 20:43:19,201 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 20:43:19,201 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:19,201 INFO L85 PathProgramCache]: Analyzing trace with hash -492091880, now seen corresponding path program 9 times [2024-06-27 20:43:19,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:19,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424521399] [2024-06-27 20:43:19,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:19,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:20,061 INFO 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 20:43:20,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:20,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424521399] [2024-06-27 20:43:20,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424521399] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:20,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:20,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:20,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123389420] [2024-06-27 20:43:20,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:20,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:20,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:20,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:20,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:20,197 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:20,197 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 158 transitions, 1126 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:20,197 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:20,197 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:20,197 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:20,480 INFO L124 PetriNetUnfolderBase]: 402/851 cut-off events. [2024-06-27 20:43:20,481 INFO L125 PetriNetUnfolderBase]: For 52570/52570 co-relation queries the response was YES. [2024-06-27 20:43:20,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3432 conditions, 851 events. 402/851 cut-off events. For 52570/52570 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 4870 event pairs, 96 based on Foata normal form. 6/849 useless extension candidates. Maximal degree in co-relation 3325. Up to 618 conditions per place. [2024-06-27 20:43:20,487 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 105 selfloop transitions, 53 changer transitions 12/174 dead transitions. [2024-06-27 20:43:20,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 253 places, 174 transitions, 1532 flow [2024-06-27 20:43:20,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:20,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:20,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 156 transitions. [2024-06-27 20:43:20,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40625 [2024-06-27 20:43:20,487 INFO L175 Difference]: Start difference. First operand has 245 places, 158 transitions, 1126 flow. Second operand 12 states and 156 transitions. [2024-06-27 20:43:20,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 253 places, 174 transitions, 1532 flow [2024-06-27 20:43:20,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 174 transitions, 1410 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 20:43:20,594 INFO L231 Difference]: Finished difference. Result has 243 places, 154 transitions, 1092 flow [2024-06-27 20:43:20,595 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=1006, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1092, PETRI_PLACES=243, PETRI_TRANSITIONS=154} [2024-06-27 20:43:20,595 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 212 predicate places. [2024-06-27 20:43:20,595 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 154 transitions, 1092 flow [2024-06-27 20:43:20,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:20,595 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:20,595 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 20:43:20,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2024-06-27 20:43:20,596 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 20:43:20,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:20,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1318985118, now seen corresponding path program 10 times [2024-06-27 20:43:20,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:20,596 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627790512] [2024-06-27 20:43:20,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:20,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:20,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:21,513 INFO 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 20:43:21,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:21,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627790512] [2024-06-27 20:43:21,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627790512] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:21,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:21,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:21,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443184451] [2024-06-27 20:43:21,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:21,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:21,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:21,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:21,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:21,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:21,668 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 154 transitions, 1092 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:21,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:21,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:21,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:21,982 INFO L124 PetriNetUnfolderBase]: 409/875 cut-off events. [2024-06-27 20:43:21,983 INFO L125 PetriNetUnfolderBase]: For 72325/72327 co-relation queries the response was YES. [2024-06-27 20:43:21,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3984 conditions, 875 events. 409/875 cut-off events. For 72325/72327 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 4983 event pairs, 100 based on Foata normal form. 6/880 useless extension candidates. Maximal degree in co-relation 3878. Up to 667 conditions per place. [2024-06-27 20:43:21,989 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 143 selfloop transitions, 19 changer transitions 9/175 dead transitions. [2024-06-27 20:43:21,989 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 175 transitions, 1694 flow [2024-06-27 20:43:21,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:43:21,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:43:21,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 163 transitions. [2024-06-27 20:43:21,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918269230769231 [2024-06-27 20:43:21,990 INFO L175 Difference]: Start difference. First operand has 243 places, 154 transitions, 1092 flow. Second operand 13 states and 163 transitions. [2024-06-27 20:43:21,990 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 175 transitions, 1694 flow [2024-06-27 20:43:22,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 175 transitions, 1564 flow, removed 12 selfloop flow, removed 11 redundant places. [2024-06-27 20:43:22,101 INFO L231 Difference]: Finished difference. Result has 238 places, 151 transitions, 998 flow [2024-06-27 20:43:22,101 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=974, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=998, PETRI_PLACES=238, PETRI_TRANSITIONS=151} [2024-06-27 20:43:22,102 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 207 predicate places. [2024-06-27 20:43:22,102 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 151 transitions, 998 flow [2024-06-27 20:43:22,102 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:22,102 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:22,102 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 20:43:22,102 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2024-06-27 20:43:22,102 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 20:43:22,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:22,102 INFO L85 PathProgramCache]: Analyzing trace with hash -1689883068, now seen corresponding path program 11 times [2024-06-27 20:43:22,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:22,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645739717] [2024-06-27 20:43:22,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:22,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:22,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:23,016 INFO 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 20:43:23,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:23,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645739717] [2024-06-27 20:43:23,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [645739717] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:23,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:23,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:23,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203158837] [2024-06-27 20:43:23,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:23,017 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:23,017 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:23,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:23,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:23,153 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:23,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 151 transitions, 998 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:23,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:23,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:23,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:23,516 INFO L124 PetriNetUnfolderBase]: 421/897 cut-off events. [2024-06-27 20:43:23,516 INFO L125 PetriNetUnfolderBase]: For 95453/95455 co-relation queries the response was YES. [2024-06-27 20:43:23,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4661 conditions, 897 events. 421/897 cut-off events. For 95453/95455 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5061 event pairs, 112 based on Foata normal form. 6/902 useless extension candidates. Maximal degree in co-relation 4558. Up to 727 conditions per place. [2024-06-27 20:43:23,521 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 143 selfloop transitions, 19 changer transitions 6/172 dead transitions. [2024-06-27 20:43:23,521 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 172 transitions, 1610 flow [2024-06-27 20:43:23,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:43:23,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:43:23,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 163 transitions. [2024-06-27 20:43:23,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3918269230769231 [2024-06-27 20:43:23,522 INFO L175 Difference]: Start difference. First operand has 238 places, 151 transitions, 998 flow. Second operand 13 states and 163 transitions. [2024-06-27 20:43:23,522 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 172 transitions, 1610 flow [2024-06-27 20:43:23,677 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 172 transitions, 1566 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 20:43:23,678 INFO L231 Difference]: Finished difference. Result has 235 places, 149 transitions, 987 flow [2024-06-27 20:43:23,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=222, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=151, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=987, PETRI_PLACES=235, PETRI_TRANSITIONS=149} [2024-06-27 20:43:23,679 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 204 predicate places. [2024-06-27 20:43:23,679 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 149 transitions, 987 flow [2024-06-27 20:43:23,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:23,680 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:23,680 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 20:43:23,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2024-06-27 20:43:23,680 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 20:43:23,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:23,680 INFO L85 PathProgramCache]: Analyzing trace with hash 69759428, now seen corresponding path program 12 times [2024-06-27 20:43:23,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:23,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945985262] [2024-06-27 20:43:23,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:23,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:24,601 INFO 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 20:43:24,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:24,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945985262] [2024-06-27 20:43:24,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945985262] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:24,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:24,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:24,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778789028] [2024-06-27 20:43:24,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:24,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:24,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:24,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:24,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:24,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:24,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 149 transitions, 987 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:24,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:24,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:24,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:25,036 INFO L124 PetriNetUnfolderBase]: 397/845 cut-off events. [2024-06-27 20:43:25,036 INFO L125 PetriNetUnfolderBase]: For 73038/73040 co-relation queries the response was YES. [2024-06-27 20:43:25,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3769 conditions, 845 events. 397/845 cut-off events. For 73038/73040 co-relation queries the response was YES. Maximal size of possible extension queue 83. Compared 4723 event pairs, 104 based on Foata normal form. 8/852 useless extension candidates. Maximal degree in co-relation 3668. Up to 727 conditions per place. [2024-06-27 20:43:25,042 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 135 selfloop transitions, 15 changer transitions 12/166 dead transitions. [2024-06-27 20:43:25,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 166 transitions, 1385 flow [2024-06-27 20:43:25,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-06-27 20:43:25,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-06-27 20:43:25,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 158 transitions. [2024-06-27 20:43:25,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3798076923076923 [2024-06-27 20:43:25,043 INFO L175 Difference]: Start difference. First operand has 235 places, 149 transitions, 987 flow. Second operand 13 states and 158 transitions. [2024-06-27 20:43:25,043 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 166 transitions, 1385 flow [2024-06-27 20:43:25,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 166 transitions, 1343 flow, removed 1 selfloop flow, removed 13 redundant places. [2024-06-27 20:43:25,139 INFO L231 Difference]: Finished difference. Result has 234 places, 144 transitions, 947 flow [2024-06-27 20:43:25,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=945, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=947, PETRI_PLACES=234, PETRI_TRANSITIONS=144} [2024-06-27 20:43:25,139 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 203 predicate places. [2024-06-27 20:43:25,139 INFO L495 AbstractCegarLoop]: Abstraction has has 234 places, 144 transitions, 947 flow [2024-06-27 20:43:25,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:25,139 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:25,139 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 20:43:25,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2024-06-27 20:43:25,140 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 20:43:25,140 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:25,140 INFO L85 PathProgramCache]: Analyzing trace with hash 583762530, now seen corresponding path program 13 times [2024-06-27 20:43:25,140 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:25,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300966610] [2024-06-27 20:43:25,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:25,140 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:25,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:26,044 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 20:43:26,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:26,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300966610] [2024-06-27 20:43:26,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300966610] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:26,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:26,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:26,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173172358] [2024-06-27 20:43:26,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:26,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:26,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:26,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:26,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:26,144 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:26,144 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 144 transitions, 947 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:26,144 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:26,144 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:26,145 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:26,445 INFO L124 PetriNetUnfolderBase]: 386/822 cut-off events. [2024-06-27 20:43:26,445 INFO L125 PetriNetUnfolderBase]: For 64339/64341 co-relation queries the response was YES. [2024-06-27 20:43:26,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3668 conditions, 822 events. 386/822 cut-off events. For 64339/64341 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 4547 event pairs, 98 based on Foata normal form. 6/827 useless extension candidates. Maximal degree in co-relation 3568. Up to 667 conditions per place. [2024-06-27 20:43:26,451 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 139 selfloop transitions, 14 changer transitions 6/163 dead transitions. [2024-06-27 20:43:26,451 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 163 transitions, 1507 flow [2024-06-27 20:43:26,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:26,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:26,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-27 20:43:26,451 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-27 20:43:26,451 INFO L175 Difference]: Start difference. First operand has 234 places, 144 transitions, 947 flow. Second operand 12 states and 149 transitions. [2024-06-27 20:43:26,451 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 238 places, 163 transitions, 1507 flow [2024-06-27 20:43:26,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 225 places, 163 transitions, 1442 flow, removed 16 selfloop flow, removed 13 redundant places. [2024-06-27 20:43:26,555 INFO L231 Difference]: Finished difference. Result has 226 places, 142 transitions, 917 flow [2024-06-27 20:43:26,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=144, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=917, PETRI_PLACES=226, PETRI_TRANSITIONS=142} [2024-06-27 20:43:26,555 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 195 predicate places. [2024-06-27 20:43:26,555 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 142 transitions, 917 flow [2024-06-27 20:43:26,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:26,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:26,555 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 20:43:26,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2024-06-27 20:43:26,556 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 20:43:26,556 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:26,556 INFO L85 PathProgramCache]: Analyzing trace with hash 583436100, now seen corresponding path program 14 times [2024-06-27 20:43:26,556 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:26,556 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768351054] [2024-06-27 20:43:26,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:26,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:26,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:27,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:27,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:27,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768351054] [2024-06-27 20:43:27,481 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768351054] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:27,481 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:27,481 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:27,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612066581] [2024-06-27 20:43:27,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:27,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:27,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:27,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:27,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:27,657 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:27,657 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 142 transitions, 917 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:27,657 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:27,657 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:27,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:27,934 INFO L124 PetriNetUnfolderBase]: 362/770 cut-off events. [2024-06-27 20:43:27,934 INFO L125 PetriNetUnfolderBase]: For 42712/42714 co-relation queries the response was YES. [2024-06-27 20:43:27,938 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2753 conditions, 770 events. 362/770 cut-off events. For 42712/42714 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 4207 event pairs, 90 based on Foata normal form. 8/777 useless extension candidates. Maximal degree in co-relation 2656. Up to 667 conditions per place. [2024-06-27 20:43:27,939 INFO L140 encePairwiseOnDemand]: 20/32 looper letters, 129 selfloop transitions, 9 changer transitions 15/157 dead transitions. [2024-06-27 20:43:27,939 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 157 transitions, 1261 flow [2024-06-27 20:43:27,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:27,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:27,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 144 transitions. [2024-06-27 20:43:27,940 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.375 [2024-06-27 20:43:27,940 INFO L175 Difference]: Start difference. First operand has 226 places, 142 transitions, 917 flow. Second operand 12 states and 144 transitions. [2024-06-27 20:43:27,940 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 157 transitions, 1261 flow [2024-06-27 20:43:27,997 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 157 transitions, 1229 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:43:27,999 INFO L231 Difference]: Finished difference. Result has 225 places, 135 transitions, 849 flow [2024-06-27 20:43:27,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=885, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=142, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=849, PETRI_PLACES=225, PETRI_TRANSITIONS=135} [2024-06-27 20:43:27,999 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 194 predicate places. [2024-06-27 20:43:27,999 INFO L495 AbstractCegarLoop]: Abstraction has has 225 places, 135 transitions, 849 flow [2024-06-27 20:43:27,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:27,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:27,999 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 20:43:28,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2024-06-27 20:43:28,000 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 20:43:28,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:28,000 INFO L85 PathProgramCache]: Analyzing trace with hash -355116302, now seen corresponding path program 1 times [2024-06-27 20:43:28,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:28,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747300887] [2024-06-27 20:43:28,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:28,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:28,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:29,079 INFO 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 20:43:29,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:29,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747300887] [2024-06-27 20:43:29,079 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747300887] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:29,079 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:29,079 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:29,079 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864837982] [2024-06-27 20:43:29,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:29,080 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:29,080 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:29,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:29,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:29,221 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:29,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 135 transitions, 849 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:29,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:29,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:29,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:29,491 INFO L124 PetriNetUnfolderBase]: 350/743 cut-off events. [2024-06-27 20:43:29,491 INFO L125 PetriNetUnfolderBase]: For 36454/36454 co-relation queries the response was YES. [2024-06-27 20:43:29,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2615 conditions, 743 events. 350/743 cut-off events. For 36454/36454 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 4012 event pairs, 75 based on Foata normal form. 6/748 useless extension candidates. Maximal degree in co-relation 2519. Up to 589 conditions per place. [2024-06-27 20:43:29,495 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 120 selfloop transitions, 11 changer transitions 25/160 dead transitions. [2024-06-27 20:43:29,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 160 transitions, 1227 flow [2024-06-27 20:43:29,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:29,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:29,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 152 transitions. [2024-06-27 20:43:29,496 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3958333333333333 [2024-06-27 20:43:29,496 INFO L175 Difference]: Start difference. First operand has 225 places, 135 transitions, 849 flow. Second operand 12 states and 152 transitions. [2024-06-27 20:43:29,496 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 160 transitions, 1227 flow [2024-06-27 20:43:29,546 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 216 places, 160 transitions, 1180 flow, removed 5 selfloop flow, removed 9 redundant places. [2024-06-27 20:43:29,547 INFO L231 Difference]: Finished difference. Result has 217 places, 127 transitions, 785 flow [2024-06-27 20:43:29,547 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=804, PETRI_DIFFERENCE_MINUEND_PLACES=205, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=124, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=785, PETRI_PLACES=217, PETRI_TRANSITIONS=127} [2024-06-27 20:43:29,547 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-06-27 20:43:29,547 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 127 transitions, 785 flow [2024-06-27 20:43:29,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:29,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:29,548 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 20:43:29,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2024-06-27 20:43:29,548 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 20:43:29,548 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:29,548 INFO L85 PathProgramCache]: Analyzing trace with hash 1112984264, now seen corresponding path program 2 times [2024-06-27 20:43:29,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:29,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282167033] [2024-06-27 20:43:29,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:29,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:30,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:30,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:30,705 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282167033] [2024-06-27 20:43:30,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282167033] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:30,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:30,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:30,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767405604] [2024-06-27 20:43:30,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:30,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:30,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:30,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:30,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:30,837 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:30,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 127 transitions, 785 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:30,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:30,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:30,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:31,080 INFO L124 PetriNetUnfolderBase]: 316/683 cut-off events. [2024-06-27 20:43:31,080 INFO L125 PetriNetUnfolderBase]: For 35183/35183 co-relation queries the response was YES. [2024-06-27 20:43:31,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2383 conditions, 683 events. 316/683 cut-off events. For 35183/35183 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 3652 event pairs, 75 based on Foata normal form. 6/688 useless extension candidates. Maximal degree in co-relation 2289. Up to 560 conditions per place. [2024-06-27 20:43:31,084 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 113 selfloop transitions, 18 changer transitions 10/145 dead transitions. [2024-06-27 20:43:31,084 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 145 transitions, 1113 flow [2024-06-27 20:43:31,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:31,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:31,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-27 20:43:31,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-27 20:43:31,085 INFO L175 Difference]: Start difference. First operand has 217 places, 127 transitions, 785 flow. Second operand 12 states and 147 transitions. [2024-06-27 20:43:31,085 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 145 transitions, 1113 flow [2024-06-27 20:43:31,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 145 transitions, 1073 flow, removed 9 selfloop flow, removed 13 redundant places. [2024-06-27 20:43:31,133 INFO L231 Difference]: Finished difference. Result has 205 places, 124 transitions, 772 flow [2024-06-27 20:43:31,133 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=747, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=127, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=772, PETRI_PLACES=205, PETRI_TRANSITIONS=124} [2024-06-27 20:43:31,133 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-06-27 20:43:31,133 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 124 transitions, 772 flow [2024-06-27 20:43:31,133 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:31,133 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:31,133 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 20:43:31,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2024-06-27 20:43:31,134 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 20:43:31,134 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:31,134 INFO L85 PathProgramCache]: Analyzing trace with hash -279975020, now seen corresponding path program 3 times [2024-06-27 20:43:31,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:31,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079766081] [2024-06-27 20:43:31,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:31,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:31,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:32,259 INFO 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 20:43:32,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:32,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079766081] [2024-06-27 20:43:32,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079766081] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:32,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:32,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:32,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363081876] [2024-06-27 20:43:32,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:32,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:32,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:32,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:32,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:32,401 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:32,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 124 transitions, 772 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:32,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:32,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:32,402 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:32,632 INFO L124 PetriNetUnfolderBase]: 309/670 cut-off events. [2024-06-27 20:43:32,632 INFO L125 PetriNetUnfolderBase]: For 29911/29911 co-relation queries the response was YES. [2024-06-27 20:43:32,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2308 conditions, 670 events. 309/670 cut-off events. For 29911/29911 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 3576 event pairs, 73 based on Foata normal form. 6/675 useless extension candidates. Maximal degree in co-relation 2221. Up to 542 conditions per place. [2024-06-27 20:43:32,636 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 110 selfloop transitions, 16 changer transitions 13/143 dead transitions. [2024-06-27 20:43:32,636 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 143 transitions, 1096 flow [2024-06-27 20:43:32,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:32,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:32,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-27 20:43:32,637 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-27 20:43:32,637 INFO L175 Difference]: Start difference. First operand has 205 places, 124 transitions, 772 flow. Second operand 12 states and 147 transitions. [2024-06-27 20:43:32,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 143 transitions, 1096 flow [2024-06-27 20:43:32,679 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 143 transitions, 1054 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:43:32,680 INFO L231 Difference]: Finished difference. Result has 201 places, 120 transitions, 747 flow [2024-06-27 20:43:32,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=730, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=124, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=747, PETRI_PLACES=201, PETRI_TRANSITIONS=120} [2024-06-27 20:43:32,681 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-06-27 20:43:32,681 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 120 transitions, 747 flow [2024-06-27 20:43:32,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:32,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:32,681 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 20:43:32,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2024-06-27 20:43:32,681 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 20:43:32,681 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:32,681 INFO L85 PathProgramCache]: Analyzing trace with hash -252024180, now seen corresponding path program 4 times [2024-06-27 20:43:32,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:32,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282226506] [2024-06-27 20:43:32,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:32,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:32,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:33,709 INFO 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 20:43:33,709 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:33,709 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282226506] [2024-06-27 20:43:33,710 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282226506] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:33,710 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:33,710 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:33,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458581012] [2024-06-27 20:43:33,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:33,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:33,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:33,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:33,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:33,854 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:33,855 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 120 transitions, 747 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:33,855 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:33,855 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:33,855 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:34,164 INFO L124 PetriNetUnfolderBase]: 298/649 cut-off events. [2024-06-27 20:43:34,164 INFO L125 PetriNetUnfolderBase]: For 28247/28247 co-relation queries the response was YES. [2024-06-27 20:43:34,166 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2234 conditions, 649 events. 298/649 cut-off events. For 28247/28247 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3413 event pairs, 69 based on Foata normal form. 6/654 useless extension candidates. Maximal degree in co-relation 2149. Up to 516 conditions per place. [2024-06-27 20:43:34,167 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 106 selfloop transitions, 13 changer transitions 17/140 dead transitions. [2024-06-27 20:43:34,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 140 transitions, 1067 flow [2024-06-27 20:43:34,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:34,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:34,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-27 20:43:34,168 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-27 20:43:34,168 INFO L175 Difference]: Start difference. First operand has 201 places, 120 transitions, 747 flow. Second operand 12 states and 147 transitions. [2024-06-27 20:43:34,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 140 transitions, 1067 flow [2024-06-27 20:43:34,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 140 transitions, 1027 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:43:34,209 INFO L231 Difference]: Finished difference. Result has 195 places, 114 transitions, 706 flow [2024-06-27 20:43:34,209 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=707, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=706, PETRI_PLACES=195, PETRI_TRANSITIONS=114} [2024-06-27 20:43:34,210 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-06-27 20:43:34,210 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 114 transitions, 706 flow [2024-06-27 20:43:34,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:34,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:34,211 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 20:43:34,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2024-06-27 20:43:34,211 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 20:43:34,211 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:34,211 INFO L85 PathProgramCache]: Analyzing trace with hash 952683842, now seen corresponding path program 5 times [2024-06-27 20:43:34,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:34,212 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428188249] [2024-06-27 20:43:34,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:34,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:34,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:35,417 INFO 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 20:43:35,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:35,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428188249] [2024-06-27 20:43:35,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428188249] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:35,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:35,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:35,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460731239] [2024-06-27 20:43:35,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:35,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:35,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:35,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:35,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:35,554 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:35,555 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 114 transitions, 706 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:35,555 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:35,555 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:35,555 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:35,796 INFO L124 PetriNetUnfolderBase]: 281/618 cut-off events. [2024-06-27 20:43:35,797 INFO L125 PetriNetUnfolderBase]: For 25841/25841 co-relation queries the response was YES. [2024-06-27 20:43:35,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2121 conditions, 618 events. 281/618 cut-off events. For 25841/25841 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 3216 event pairs, 63 based on Foata normal form. 6/623 useless extension candidates. Maximal degree in co-relation 2039. Up to 480 conditions per place. [2024-06-27 20:43:35,800 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 97 selfloop transitions, 6 changer transitions 28/135 dead transitions. [2024-06-27 20:43:35,800 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 135 transitions, 1018 flow [2024-06-27 20:43:35,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:35,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:35,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 147 transitions. [2024-06-27 20:43:35,800 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3828125 [2024-06-27 20:43:35,800 INFO L175 Difference]: Start difference. First operand has 195 places, 114 transitions, 706 flow. Second operand 12 states and 147 transitions. [2024-06-27 20:43:35,800 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 135 transitions, 1018 flow [2024-06-27 20:43:35,834 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 135 transitions, 982 flow, removed 5 selfloop flow, removed 11 redundant places. [2024-06-27 20:43:35,835 INFO L231 Difference]: Finished difference. Result has 187 places, 103 transitions, 618 flow [2024-06-27 20:43:35,835 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=670, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=618, PETRI_PLACES=187, PETRI_TRANSITIONS=103} [2024-06-27 20:43:35,836 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 156 predicate places. [2024-06-27 20:43:35,836 INFO L495 AbstractCegarLoop]: Abstraction has has 187 places, 103 transitions, 618 flow [2024-06-27 20:43:35,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:35,836 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:35,836 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 20:43:35,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2024-06-27 20:43:35,836 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 20:43:35,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:35,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1369109442, now seen corresponding path program 6 times [2024-06-27 20:43:35,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:35,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428438904] [2024-06-27 20:43:35,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:35,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:35,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:36,819 INFO 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 20:43:36,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:36,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428438904] [2024-06-27 20:43:36,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428438904] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:36,819 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:36,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:36,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151524102] [2024-06-27 20:43:36,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:36,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:36,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:36,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:36,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:36,962 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:36,963 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 103 transitions, 618 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:36,963 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:36,963 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:36,963 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:37,235 INFO L124 PetriNetUnfolderBase]: 252/549 cut-off events. [2024-06-27 20:43:37,235 INFO L125 PetriNetUnfolderBase]: For 22782/22782 co-relation queries the response was YES. [2024-06-27 20:43:37,237 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1879 conditions, 549 events. 252/549 cut-off events. For 22782/22782 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 2773 event pairs, 57 based on Foata normal form. 6/554 useless extension candidates. Maximal degree in co-relation 1812. Up to 411 conditions per place. [2024-06-27 20:43:37,238 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 88 selfloop transitions, 16 changer transitions 12/120 dead transitions. [2024-06-27 20:43:37,238 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 183 places, 120 transitions, 886 flow [2024-06-27 20:43:37,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:37,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:37,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 149 transitions. [2024-06-27 20:43:37,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3880208333333333 [2024-06-27 20:43:37,239 INFO L175 Difference]: Start difference. First operand has 187 places, 103 transitions, 618 flow. Second operand 12 states and 149 transitions. [2024-06-27 20:43:37,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 183 places, 120 transitions, 886 flow [2024-06-27 20:43:37,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 120 transitions, 857 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 20:43:37,286 INFO L231 Difference]: Finished difference. Result has 172 places, 99 transitions, 604 flow [2024-06-27 20:43:37,286 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=589, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=604, PETRI_PLACES=172, PETRI_TRANSITIONS=99} [2024-06-27 20:43:37,286 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-06-27 20:43:37,286 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 99 transitions, 604 flow [2024-06-27 20:43:37,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:37,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:37,286 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 20:43:37,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2024-06-27 20:43:37,287 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 20:43:37,287 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:37,287 INFO L85 PathProgramCache]: Analyzing trace with hash 224281330, now seen corresponding path program 7 times [2024-06-27 20:43:37,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:37,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920721632] [2024-06-27 20:43:37,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:37,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:37,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:38,328 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 20:43:38,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:38,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920721632] [2024-06-27 20:43:38,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920721632] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:38,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:38,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:38,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1445369722] [2024-06-27 20:43:38,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:38,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:38,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:38,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:38,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:38,478 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:38,478 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 99 transitions, 604 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:38,478 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:38,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:38,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:38,781 INFO L124 PetriNetUnfolderBase]: 238/523 cut-off events. [2024-06-27 20:43:38,781 INFO L125 PetriNetUnfolderBase]: For 19228/19228 co-relation queries the response was YES. [2024-06-27 20:43:38,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1790 conditions, 523 events. 238/523 cut-off events. For 19228/19228 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 2602 event pairs, 57 based on Foata normal form. 6/528 useless extension candidates. Maximal degree in co-relation 1729. Up to 407 conditions per place. [2024-06-27 20:43:38,784 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 83 selfloop transitions, 13 changer transitions 15/115 dead transitions. [2024-06-27 20:43:38,784 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 115 transitions, 860 flow [2024-06-27 20:43:38,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:38,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:38,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-27 20:43:38,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-27 20:43:38,785 INFO L175 Difference]: Start difference. First operand has 172 places, 99 transitions, 604 flow. Second operand 12 states and 145 transitions. [2024-06-27 20:43:38,785 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 177 places, 115 transitions, 860 flow [2024-06-27 20:43:38,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 165 places, 115 transitions, 820 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 20:43:38,809 INFO L231 Difference]: Finished difference. Result has 166 places, 94 transitions, 565 flow [2024-06-27 20:43:38,809 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=564, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=565, PETRI_PLACES=166, PETRI_TRANSITIONS=94} [2024-06-27 20:43:38,809 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 135 predicate places. [2024-06-27 20:43:38,810 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 94 transitions, 565 flow [2024-06-27 20:43:38,810 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:38,810 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:38,810 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 20:43:38,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2024-06-27 20:43:38,810 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 20:43:38,810 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:38,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1386970496, now seen corresponding path program 8 times [2024-06-27 20:43:38,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:38,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258674676] [2024-06-27 20:43:38,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:38,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:39,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:39,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:39,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258674676] [2024-06-27 20:43:39,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258674676] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:39,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:39,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:39,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493071849] [2024-06-27 20:43:39,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:39,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:39,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:39,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:39,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:40,111 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:40,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 94 transitions, 565 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:40,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:40,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:40,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:40,400 INFO L124 PetriNetUnfolderBase]: 226/499 cut-off events. [2024-06-27 20:43:40,401 INFO L125 PetriNetUnfolderBase]: For 17246/17246 co-relation queries the response was YES. [2024-06-27 20:43:40,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1691 conditions, 499 events. 226/499 cut-off events. For 17246/17246 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 2443 event pairs, 55 based on Foata normal form. 6/504 useless extension candidates. Maximal degree in co-relation 1633. Up to 389 conditions per place. [2024-06-27 20:43:40,403 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 81 selfloop transitions, 12 changer transitions 13/110 dead transitions. [2024-06-27 20:43:40,403 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 110 transitions, 811 flow [2024-06-27 20:43:40,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:40,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:40,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-27 20:43:40,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-27 20:43:40,404 INFO L175 Difference]: Start difference. First operand has 166 places, 94 transitions, 565 flow. Second operand 12 states and 145 transitions. [2024-06-27 20:43:40,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 110 transitions, 811 flow [2024-06-27 20:43:40,424 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 110 transitions, 769 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:43:40,425 INFO L231 Difference]: Finished difference. Result has 158 places, 90 transitions, 530 flow [2024-06-27 20:43:40,426 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=523, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=82, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=530, PETRI_PLACES=158, PETRI_TRANSITIONS=90} [2024-06-27 20:43:40,426 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 127 predicate places. [2024-06-27 20:43:40,426 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 90 transitions, 530 flow [2024-06-27 20:43:40,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:40,426 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:40,426 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 20:43:40,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable123 [2024-06-27 20:43:40,427 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 20:43:40,427 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:40,427 INFO L85 PathProgramCache]: Analyzing trace with hash 872243678, now seen corresponding path program 9 times [2024-06-27 20:43:40,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:40,427 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556657756] [2024-06-27 20:43:40,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:40,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:40,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:41,557 INFO 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 20:43:41,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:41,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556657756] [2024-06-27 20:43:41,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556657756] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:41,558 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:41,558 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:41,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035040089] [2024-06-27 20:43:41,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:41,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:41,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:41,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:41,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:41,711 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:41,712 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 90 transitions, 530 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:41,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:41,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:41,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:41,941 INFO L124 PetriNetUnfolderBase]: 215/478 cut-off events. [2024-06-27 20:43:41,942 INFO L125 PetriNetUnfolderBase]: For 15966/15966 co-relation queries the response was YES. [2024-06-27 20:43:41,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609 conditions, 478 events. 215/478 cut-off events. For 15966/15966 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 2291 event pairs, 40 based on Foata normal form. 6/483 useless extension candidates. Maximal degree in co-relation 1553. Up to 319 conditions per place. [2024-06-27 20:43:41,944 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 76 selfloop transitions, 12 changer transitions 16/108 dead transitions. [2024-06-27 20:43:41,944 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 108 transitions, 776 flow [2024-06-27 20:43:41,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:41,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:41,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-06-27 20:43:41,944 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3854166666666667 [2024-06-27 20:43:41,944 INFO L175 Difference]: Start difference. First operand has 158 places, 90 transitions, 530 flow. Second operand 12 states and 148 transitions. [2024-06-27 20:43:41,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 108 transitions, 776 flow [2024-06-27 20:43:41,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 108 transitions, 743 flow, removed 3 selfloop flow, removed 11 redundant places. [2024-06-27 20:43:41,961 INFO L231 Difference]: Finished difference. Result has 152 places, 84 transitions, 498 flow [2024-06-27 20:43:41,961 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=497, PETRI_DIFFERENCE_MINUEND_PLACES=140, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=498, PETRI_PLACES=152, PETRI_TRANSITIONS=84} [2024-06-27 20:43:41,962 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 121 predicate places. [2024-06-27 20:43:41,962 INFO L495 AbstractCegarLoop]: Abstraction has has 152 places, 84 transitions, 498 flow [2024-06-27 20:43:41,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:41,962 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:41,962 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 20:43:41,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable124 [2024-06-27 20:43:41,962 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 20:43:41,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:41,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1171035036, now seen corresponding path program 10 times [2024-06-27 20:43:41,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:41,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850042779] [2024-06-27 20:43:41,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:41,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:43,151 INFO 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 20:43:43,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:43,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850042779] [2024-06-27 20:43:43,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850042779] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:43,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:43,152 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:43,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647412515] [2024-06-27 20:43:43,152 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:43,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:43,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:43,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:43,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:43,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:43,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 84 transitions, 498 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:43,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:43,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:43,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:43,473 INFO L124 PetriNetUnfolderBase]: 196/439 cut-off events. [2024-06-27 20:43:43,473 INFO L125 PetriNetUnfolderBase]: For 14795/14795 co-relation queries the response was YES. [2024-06-27 20:43:43,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1499 conditions, 439 events. 196/439 cut-off events. For 14795/14795 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 2050 event pairs, 43 based on Foata normal form. 6/444 useless extension candidates. Maximal degree in co-relation 1445. Up to 315 conditions per place. [2024-06-27 20:43:43,475 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 74 selfloop transitions, 10 changer transitions 13/101 dead transitions. [2024-06-27 20:43:43,475 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 101 transitions, 728 flow [2024-06-27 20:43:43,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:43,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:43,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 145 transitions. [2024-06-27 20:43:43,476 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3776041666666667 [2024-06-27 20:43:43,476 INFO L175 Difference]: Start difference. First operand has 152 places, 84 transitions, 498 flow. Second operand 12 states and 145 transitions. [2024-06-27 20:43:43,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 101 transitions, 728 flow [2024-06-27 20:43:43,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 101 transitions, 694 flow, removed 5 selfloop flow, removed 12 redundant places. [2024-06-27 20:43:43,490 INFO L231 Difference]: Finished difference. Result has 143 places, 79 transitions, 465 flow [2024-06-27 20:43:43,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=464, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=465, PETRI_PLACES=143, PETRI_TRANSITIONS=79} [2024-06-27 20:43:43,490 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-06-27 20:43:43,490 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 79 transitions, 465 flow [2024-06-27 20:43:43,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:43,490 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:43,490 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 20:43:43,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable125 [2024-06-27 20:43:43,491 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 20:43:43,491 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:43,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1030659552, now seen corresponding path program 11 times [2024-06-27 20:43:43,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:43,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [988499209] [2024-06-27 20:43:43,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:43,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:43,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:44,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:44,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:44,346 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [988499209] [2024-06-27 20:43:44,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [988499209] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:44,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:44,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:44,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141657434] [2024-06-27 20:43:44,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:44,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:44,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:44,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:44,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:44,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:44,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 79 transitions, 465 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:44,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:44,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:44,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:44,690 INFO L124 PetriNetUnfolderBase]: 181/408 cut-off events. [2024-06-27 20:43:44,690 INFO L125 PetriNetUnfolderBase]: For 12466/12466 co-relation queries the response was YES. [2024-06-27 20:43:44,691 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1387 conditions, 408 events. 181/408 cut-off events. For 12466/12466 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 1836 event pairs, 43 based on Foata normal form. 6/413 useless extension candidates. Maximal degree in co-relation 1337. Up to 311 conditions per place. [2024-06-27 20:43:44,691 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 63 selfloop transitions, 3 changer transitions 25/95 dead transitions. [2024-06-27 20:43:44,691 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 147 places, 95 transitions, 681 flow [2024-06-27 20:43:44,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:44,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:44,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-27 20:43:44,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-27 20:43:44,692 INFO L175 Difference]: Start difference. First operand has 143 places, 79 transitions, 465 flow. Second operand 12 states and 141 transitions. [2024-06-27 20:43:44,692 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 147 places, 95 transitions, 681 flow [2024-06-27 20:43:44,703 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 95 transitions, 653 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 20:43:44,703 INFO L231 Difference]: Finished difference. Result has 136 places, 69 transitions, 397 flow [2024-06-27 20:43:44,703 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=397, PETRI_PLACES=136, PETRI_TRANSITIONS=69} [2024-06-27 20:43:44,704 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 105 predicate places. [2024-06-27 20:43:44,704 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 69 transitions, 397 flow [2024-06-27 20:43:44,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:44,704 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:44,704 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 20:43:44,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable126 [2024-06-27 20:43:44,704 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 20:43:44,704 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:44,705 INFO L85 PathProgramCache]: Analyzing trace with hash 351474324, now seen corresponding path program 12 times [2024-06-27 20:43:44,705 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:44,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782658688] [2024-06-27 20:43:44,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:44,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:45,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:45,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:45,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782658688] [2024-06-27 20:43:45,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782658688] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:45,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:45,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:45,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [573619832] [2024-06-27 20:43:45,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:45,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:45,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:45,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:45,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:45,822 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:45,822 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 69 transitions, 397 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:45,823 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:45,823 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:45,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:46,020 INFO L124 PetriNetUnfolderBase]: 162/357 cut-off events. [2024-06-27 20:43:46,020 INFO L125 PetriNetUnfolderBase]: For 10818/10818 co-relation queries the response was YES. [2024-06-27 20:43:46,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 357 events. 162/357 cut-off events. For 10818/10818 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 1556 event pairs, 41 based on Foata normal form. 6/362 useless extension candidates. Maximal degree in co-relation 1166. Up to 236 conditions per place. [2024-06-27 20:43:46,021 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 47 selfloop transitions, 18 changer transitions 14/83 dead transitions. [2024-06-27 20:43:46,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 83 transitions, 583 flow [2024-06-27 20:43:46,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:46,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:46,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-27 20:43:46,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-27 20:43:46,023 INFO L175 Difference]: Start difference. First operand has 136 places, 69 transitions, 397 flow. Second operand 12 states and 143 transitions. [2024-06-27 20:43:46,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 131 places, 83 transitions, 583 flow [2024-06-27 20:43:46,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 83 transitions, 550 flow, removed 8 selfloop flow, removed 13 redundant places. [2024-06-27 20:43:46,031 INFO L231 Difference]: Finished difference. Result has 119 places, 64 transitions, 379 flow [2024-06-27 20:43:46,031 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=364, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=379, PETRI_PLACES=119, PETRI_TRANSITIONS=64} [2024-06-27 20:43:46,032 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 88 predicate places. [2024-06-27 20:43:46,032 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 64 transitions, 379 flow [2024-06-27 20:43:46,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:46,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:46,032 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 20:43:46,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable127 [2024-06-27 20:43:46,033 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 20:43:46,033 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:46,033 INFO L85 PathProgramCache]: Analyzing trace with hash -810801120, now seen corresponding path program 13 times [2024-06-27 20:43:46,033 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:46,033 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007659338] [2024-06-27 20:43:46,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:46,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:46,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:46,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:46,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:46,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007659338] [2024-06-27 20:43:46,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007659338] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:46,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:46,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:46,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251961898] [2024-06-27 20:43:46,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:46,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:46,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:46,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:46,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:47,095 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:47,096 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 64 transitions, 379 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:47,096 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:47,096 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:47,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:47,328 INFO L124 PetriNetUnfolderBase]: 150/331 cut-off events. [2024-06-27 20:43:47,329 INFO L125 PetriNetUnfolderBase]: For 8000/8000 co-relation queries the response was YES. [2024-06-27 20:43:47,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1126 conditions, 331 events. 150/331 cut-off events. For 8000/8000 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1387 event pairs, 39 based on Foata normal form. 6/336 useless extension candidates. Maximal degree in co-relation 1086. Up to 218 conditions per place. [2024-06-27 20:43:47,330 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 43 selfloop transitions, 18 changer transitions 13/78 dead transitions. [2024-06-27 20:43:47,330 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 78 transitions, 555 flow [2024-06-27 20:43:47,330 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:47,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:47,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-27 20:43:47,331 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-27 20:43:47,331 INFO L175 Difference]: Start difference. First operand has 119 places, 64 transitions, 379 flow. Second operand 12 states and 141 transitions. [2024-06-27 20:43:47,331 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 78 transitions, 555 flow [2024-06-27 20:43:47,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 78 transitions, 507 flow, removed 3 selfloop flow, removed 12 redundant places. [2024-06-27 20:43:47,338 INFO L231 Difference]: Finished difference. Result has 112 places, 60 transitions, 352 flow [2024-06-27 20:43:47,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=331, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=352, PETRI_PLACES=112, PETRI_TRANSITIONS=60} [2024-06-27 20:43:47,339 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 81 predicate places. [2024-06-27 20:43:47,339 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 60 transitions, 352 flow [2024-06-27 20:43:47,339 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:47,339 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:47,339 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 20:43:47,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable128 [2024-06-27 20:43:47,339 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 20:43:47,339 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:47,339 INFO L85 PathProgramCache]: Analyzing trace with hash 211098840, now seen corresponding path program 14 times [2024-06-27 20:43:47,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:47,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658829752] [2024-06-27 20:43:47,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:47,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:47,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:48,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:48,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:48,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658829752] [2024-06-27 20:43:48,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658829752] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:48,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:48,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:48,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460008570] [2024-06-27 20:43:48,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:48,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:48,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:48,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:48,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:48,585 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:48,586 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 60 transitions, 352 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:48,586 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:48,586 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:48,586 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:48,773 INFO L124 PetriNetUnfolderBase]: 139/310 cut-off events. [2024-06-27 20:43:48,774 INFO L125 PetriNetUnfolderBase]: For 7194/7198 co-relation queries the response was YES. [2024-06-27 20:43:48,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1050 conditions, 310 events. 139/310 cut-off events. For 7194/7198 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1272 event pairs, 33 based on Foata normal form. 10/319 useless extension candidates. Maximal degree in co-relation 1012. Up to 178 conditions per place. [2024-06-27 20:43:48,775 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 41 selfloop transitions, 16 changer transitions 14/75 dead transitions. [2024-06-27 20:43:48,775 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 75 transitions, 524 flow [2024-06-27 20:43:48,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:48,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:48,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 143 transitions. [2024-06-27 20:43:48,775 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3723958333333333 [2024-06-27 20:43:48,776 INFO L175 Difference]: Start difference. First operand has 112 places, 60 transitions, 352 flow. Second operand 12 states and 143 transitions. [2024-06-27 20:43:48,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 75 transitions, 524 flow [2024-06-27 20:43:48,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 75 transitions, 480 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:43:48,782 INFO L231 Difference]: Finished difference. Result has 106 places, 54 transitions, 313 flow [2024-06-27 20:43:48,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=308, PETRI_DIFFERENCE_MINUEND_PLACES=94, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=313, PETRI_PLACES=106, PETRI_TRANSITIONS=54} [2024-06-27 20:43:48,782 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 75 predicate places. [2024-06-27 20:43:48,782 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 54 transitions, 313 flow [2024-06-27 20:43:48,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:48,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:48,782 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 20:43:48,783 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable129 [2024-06-27 20:43:48,783 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 20:43:48,783 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:48,783 INFO L85 PathProgramCache]: Analyzing trace with hash -17098988, now seen corresponding path program 15 times [2024-06-27 20:43:48,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:48,783 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [927322027] [2024-06-27 20:43:48,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:48,784 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:48,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:49,772 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 20:43:49,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:49,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [927322027] [2024-06-27 20:43:49,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [927322027] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:49,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:49,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:49,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481955553] [2024-06-27 20:43:49,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:49,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:49,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:49,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:49,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:49,950 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:49,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 54 transitions, 313 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:49,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:49,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:49,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:50,134 INFO L124 PetriNetUnfolderBase]: 123/274 cut-off events. [2024-06-27 20:43:50,134 INFO L125 PetriNetUnfolderBase]: For 5956/5960 co-relation queries the response was YES. [2024-06-27 20:43:50,135 INFO L83 FinitePrefix]: Finished finitePrefix Result has 935 conditions, 274 events. 123/274 cut-off events. For 5956/5960 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1061 event pairs, 33 based on Foata normal form. 10/283 useless extension candidates. Maximal degree in co-relation 900. Up to 174 conditions per place. [2024-06-27 20:43:50,135 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 33 selfloop transitions, 14 changer transitions 17/68 dead transitions. [2024-06-27 20:43:50,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 68 transitions, 469 flow [2024-06-27 20:43:50,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:50,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:50,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 141 transitions. [2024-06-27 20:43:50,136 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3671875 [2024-06-27 20:43:50,136 INFO L175 Difference]: Start difference. First operand has 106 places, 54 transitions, 313 flow. Second operand 12 states and 141 transitions. [2024-06-27 20:43:50,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 68 transitions, 469 flow [2024-06-27 20:43:50,140 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 68 transitions, 427 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-06-27 20:43:50,140 INFO L231 Difference]: Finished difference. Result has 97 places, 47 transitions, 270 flow [2024-06-27 20:43:50,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=271, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=270, PETRI_PLACES=97, PETRI_TRANSITIONS=47} [2024-06-27 20:43:50,140 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 66 predicate places. [2024-06-27 20:43:50,140 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 47 transitions, 270 flow [2024-06-27 20:43:50,141 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:50,141 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:50,141 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 20:43:50,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable130 [2024-06-27 20:43:50,141 INFO L420 AbstractCegarLoop]: === Iteration 132 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT === [ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-06-27 20:43:50,141 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:50,141 INFO L85 PathProgramCache]: Analyzing trace with hash 1867887346, now seen corresponding path program 16 times [2024-06-27 20:43:50,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:50,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802105368] [2024-06-27 20:43:50,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:50,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:51,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:51,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:51,136 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802105368] [2024-06-27 20:43:51,136 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802105368] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:51,136 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:51,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:51,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386988779] [2024-06-27 20:43:51,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:51,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:51,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:51,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:51,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=124, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:51,276 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:51,276 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 47 transitions, 270 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:51,276 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:51,276 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:51,276 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:51,454 INFO L124 PetriNetUnfolderBase]: 109/240 cut-off events. [2024-06-27 20:43:51,454 INFO L125 PetriNetUnfolderBase]: For 4522/4526 co-relation queries the response was YES. [2024-06-27 20:43:51,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 815 conditions, 240 events. 109/240 cut-off events. For 4522/4526 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 875 event pairs, 31 based on Foata normal form. 10/249 useless extension candidates. Maximal degree in co-relation 784. Up to 156 conditions per place. [2024-06-27 20:43:51,455 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 30 selfloop transitions, 13 changer transitions 14/61 dead transitions. [2024-06-27 20:43:51,455 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 61 transitions, 412 flow [2024-06-27 20:43:51,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:51,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:51,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-27 20:43:51,456 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-27 20:43:51,456 INFO L175 Difference]: Start difference. First operand has 97 places, 47 transitions, 270 flow. Second operand 12 states and 139 transitions. [2024-06-27 20:43:51,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 61 transitions, 412 flow [2024-06-27 20:43:51,459 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 61 transitions, 372 flow, removed 6 selfloop flow, removed 12 redundant places. [2024-06-27 20:43:51,460 INFO L231 Difference]: Finished difference. Result has 86 places, 42 transitions, 235 flow [2024-06-27 20:43:51,460 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=235, PETRI_PLACES=86, PETRI_TRANSITIONS=42} [2024-06-27 20:43:51,460 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 55 predicate places. [2024-06-27 20:43:51,460 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 42 transitions, 235 flow [2024-06-27 20:43:51,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:51,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:51,460 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 20:43:51,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable131 [2024-06-27 20:43:51,461 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 20:43:51,461 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:51,461 INFO L85 PathProgramCache]: Analyzing trace with hash -647193116, now seen corresponding path program 17 times [2024-06-27 20:43:51,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:51,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139842389] [2024-06-27 20:43:51,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:51,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:52,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:52,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:52,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139842389] [2024-06-27 20:43:52,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139842389] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:52,403 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:52,403 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:52,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767719066] [2024-06-27 20:43:52,403 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:52,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:52,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:52,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:52,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:52,538 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:52,538 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 42 transitions, 235 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:52,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:52,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:52,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:52,776 INFO L124 PetriNetUnfolderBase]: 97/214 cut-off events. [2024-06-27 20:43:52,776 INFO L125 PetriNetUnfolderBase]: For 3012/3012 co-relation queries the response was YES. [2024-06-27 20:43:52,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 712 conditions, 214 events. 97/214 cut-off events. For 3012/3012 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 732 event pairs, 29 based on Foata normal form. 6/219 useless extension candidates. Maximal degree in co-relation 686. Up to 138 conditions per place. [2024-06-27 20:43:52,777 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 28 selfloop transitions, 11 changer transitions 13/56 dead transitions. [2024-06-27 20:43:52,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 56 transitions, 367 flow [2024-06-27 20:43:52,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:52,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:52,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-27 20:43:52,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-27 20:43:52,778 INFO L175 Difference]: Start difference. First operand has 86 places, 42 transitions, 235 flow. Second operand 12 states and 139 transitions. [2024-06-27 20:43:52,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 56 transitions, 367 flow [2024-06-27 20:43:52,780 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 56 transitions, 323 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-06-27 20:43:52,781 INFO L231 Difference]: Finished difference. Result has 78 places, 38 transitions, 198 flow [2024-06-27 20:43:52,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=198, PETRI_PLACES=78, PETRI_TRANSITIONS=38} [2024-06-27 20:43:52,781 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 47 predicate places. [2024-06-27 20:43:52,781 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 38 transitions, 198 flow [2024-06-27 20:43:52,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:52,782 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:52,782 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 20:43:52,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable132 [2024-06-27 20:43:52,782 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 20:43:52,782 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:52,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1727511862, now seen corresponding path program 18 times [2024-06-27 20:43:52,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:52,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225943331] [2024-06-27 20:43:52,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:52,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:53,917 INFO 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 20:43:53,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:53,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225943331] [2024-06-27 20:43:53,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225943331] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:53,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:53,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:53,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665548343] [2024-06-27 20:43:53,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:53,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:53,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:53,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:53,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:54,089 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:54,089 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 38 transitions, 198 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:54,089 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:54,089 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:54,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:54,262 INFO L124 PetriNetUnfolderBase]: 86/193 cut-off events. [2024-06-27 20:43:54,262 INFO L125 PetriNetUnfolderBase]: For 2492/2492 co-relation queries the response was YES. [2024-06-27 20:43:54,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628 conditions, 193 events. 86/193 cut-off events. For 2492/2492 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 619 event pairs, 25 based on Foata normal form. 6/198 useless extension candidates. Maximal degree in co-relation 604. Up to 112 conditions per place. [2024-06-27 20:43:54,263 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 24 selfloop transitions, 8 changer transitions 17/53 dead transitions. [2024-06-27 20:43:54,263 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 53 transitions, 326 flow [2024-06-27 20:43:54,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:54,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:54,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 139 transitions. [2024-06-27 20:43:54,263 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619791666666667 [2024-06-27 20:43:54,263 INFO L175 Difference]: Start difference. First operand has 78 places, 38 transitions, 198 flow. Second operand 12 states and 139 transitions. [2024-06-27 20:43:54,263 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 53 transitions, 326 flow [2024-06-27 20:43:54,265 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 53 transitions, 298 flow, removed 3 selfloop flow, removed 10 redundant places. [2024-06-27 20:43:54,266 INFO L231 Difference]: Finished difference. Result has 73 places, 32 transitions, 163 flow [2024-06-27 20:43:54,266 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=163, PETRI_PLACES=73, PETRI_TRANSITIONS=32} [2024-06-27 20:43:54,266 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 42 predicate places. [2024-06-27 20:43:54,266 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 32 transitions, 163 flow [2024-06-27 20:43:54,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:54,266 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:54,266 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 20:43:54,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable133 [2024-06-27 20:43:54,266 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 20:43:54,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:54,266 INFO L85 PathProgramCache]: Analyzing trace with hash 143391474, now seen corresponding path program 19 times [2024-06-27 20:43:54,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:54,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116065895] [2024-06-27 20:43:54,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:54,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:55,384 INFO 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 20:43:55,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:55,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116065895] [2024-06-27 20:43:55,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116065895] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:55,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:55,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:55,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988021864] [2024-06-27 20:43:55,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:55,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:55,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:55,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:55,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:55,539 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:55,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 32 transitions, 163 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:55,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:55,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:55,539 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:55,784 INFO L124 PetriNetUnfolderBase]: 70/159 cut-off events. [2024-06-27 20:43:55,784 INFO L125 PetriNetUnfolderBase]: For 2018/2018 co-relation queries the response was YES. [2024-06-27 20:43:55,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 159 events. 70/159 cut-off events. For 2018/2018 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 458 event pairs, 23 based on Foata normal form. 6/164 useless extension candidates. Maximal degree in co-relation 500. Up to 94 conditions per place. [2024-06-27 20:43:55,785 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 21 selfloop transitions, 8 changer transitions 13/46 dead transitions. [2024-06-27 20:43:55,785 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 46 transitions, 275 flow [2024-06-27 20:43:55,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:55,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:55,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-27 20:43:55,785 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-27 20:43:55,786 INFO L175 Difference]: Start difference. First operand has 73 places, 32 transitions, 163 flow. Second operand 12 states and 136 transitions. [2024-06-27 20:43:55,786 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 46 transitions, 275 flow [2024-06-27 20:43:55,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 46 transitions, 246 flow, removed 4 selfloop flow, removed 12 redundant places. [2024-06-27 20:43:55,787 INFO L231 Difference]: Finished difference. Result has 64 places, 28 transitions, 135 flow [2024-06-27 20:43:55,787 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=135, PETRI_PLACES=64, PETRI_TRANSITIONS=28} [2024-06-27 20:43:55,787 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-06-27 20:43:55,787 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 28 transitions, 135 flow [2024-06-27 20:43:55,787 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:55,787 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:55,788 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 20:43:55,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable134 [2024-06-27 20:43:55,788 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 20:43:55,788 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:55,788 INFO L85 PathProgramCache]: Analyzing trace with hash -26716310, now seen corresponding path program 20 times [2024-06-27 20:43:55,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:55,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [647362234] [2024-06-27 20:43:55,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:55,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:55,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:56,963 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-06-27 20:43:56,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:56,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [647362234] [2024-06-27 20:43:56,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [647362234] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:56,963 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:56,964 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:56,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51850314] [2024-06-27 20:43:56,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:56,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:56,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:56,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:56,964 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:57,085 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:57,085 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 28 transitions, 135 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:57,085 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:57,085 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:57,085 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:57,268 INFO L124 PetriNetUnfolderBase]: 59/138 cut-off events. [2024-06-27 20:43:57,268 INFO L125 PetriNetUnfolderBase]: For 1408/1408 co-relation queries the response was YES. [2024-06-27 20:43:57,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 441 conditions, 138 events. 59/138 cut-off events. For 1408/1408 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 354 event pairs, 19 based on Foata normal form. 6/143 useless extension candidates. Maximal degree in co-relation 422. Up to 68 conditions per place. [2024-06-27 20:43:57,269 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 17 selfloop transitions, 6 changer transitions 16/43 dead transitions. [2024-06-27 20:43:57,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 43 transitions, 243 flow [2024-06-27 20:43:57,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:57,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:57,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 136 transitions. [2024-06-27 20:43:57,269 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3541666666666667 [2024-06-27 20:43:57,269 INFO L175 Difference]: Start difference. First operand has 64 places, 28 transitions, 135 flow. Second operand 12 states and 136 transitions. [2024-06-27 20:43:57,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 43 transitions, 243 flow [2024-06-27 20:43:57,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 43 transitions, 219 flow, removed 4 selfloop flow, removed 11 redundant places. [2024-06-27 20:43:57,270 INFO L231 Difference]: Finished difference. Result has 58 places, 23 transitions, 104 flow [2024-06-27 20:43:57,270 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=111, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=104, PETRI_PLACES=58, PETRI_TRANSITIONS=23} [2024-06-27 20:43:57,271 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 27 predicate places. [2024-06-27 20:43:57,271 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 23 transitions, 104 flow [2024-06-27 20:43:57,271 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:57,271 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-06-27 20:43:57,271 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 20:43:57,271 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable135 [2024-06-27 20:43:57,271 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 20:43:57,271 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-06-27 20:43:57,272 INFO L85 PathProgramCache]: Analyzing trace with hash -137538830, now seen corresponding path program 21 times [2024-06-27 20:43:57,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-06-27 20:43:57,272 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755049439] [2024-06-27 20:43:57,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-06-27 20:43:57,272 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-06-27 20:43:57,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-06-27 20:43:58,443 INFO 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 20:43:58,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-06-27 20:43:58,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755049439] [2024-06-27 20:43:58,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755049439] provided 1 perfect and 0 imperfect interpolant sequences [2024-06-27 20:43:58,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-06-27 20:43:58,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-06-27 20:43:58,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59124940] [2024-06-27 20:43:58,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-06-27 20:43:58,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-06-27 20:43:58,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-06-27 20:43:58,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-06-27 20:43:58,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-06-27 20:43:58,565 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 32 [2024-06-27 20:43:58,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 23 transitions, 104 flow. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:58,565 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-06-27 20:43:58,565 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 32 [2024-06-27 20:43:58,565 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-06-27 20:43:58,685 INFO L124 PetriNetUnfolderBase]: 29/76 cut-off events. [2024-06-27 20:43:58,685 INFO L125 PetriNetUnfolderBase]: For 468/468 co-relation queries the response was YES. [2024-06-27 20:43:58,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 76 events. 29/76 cut-off events. For 468/468 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 115 event pairs, 0 based on Foata normal form. 6/81 useless extension candidates. Maximal degree in co-relation 186. Up to 24 conditions per place. [2024-06-27 20:43:58,685 INFO L140 encePairwiseOnDemand]: 21/32 looper letters, 0 selfloop transitions, 0 changer transitions 34/34 dead transitions. [2024-06-27 20:43:58,685 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 34 transitions, 162 flow [2024-06-27 20:43:58,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-06-27 20:43:58,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-06-27 20:43:58,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 127 transitions. [2024-06-27 20:43:58,686 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3307291666666667 [2024-06-27 20:43:58,686 INFO L175 Difference]: Start difference. First operand has 58 places, 23 transitions, 104 flow. Second operand 12 states and 127 transitions. [2024-06-27 20:43:58,686 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 34 transitions, 162 flow [2024-06-27 20:43:58,686 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 34 transitions, 134 flow, removed 0 selfloop flow, removed 14 redundant places. [2024-06-27 20:43:58,687 INFO L231 Difference]: Finished difference. Result has 45 places, 0 transitions, 0 flow [2024-06-27 20:43:58,687 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=32, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=0, PETRI_PLACES=45, PETRI_TRANSITIONS=0} [2024-06-27 20:43:58,687 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 14 predicate places. [2024-06-27 20:43:58,687 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 0 transitions, 0 flow [2024-06-27 20:43:58,687 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 13 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-06-27 20:43:58,689 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONWITNESS_INVARIANT (3 of 4 remaining) [2024-06-27 20:43:58,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONWITNESS_INVARIANT (2 of 4 remaining) [2024-06-27 20:43:58,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-06-27 20:43:58,690 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-06-27 20:43:58,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable136 [2024-06-27 20:43:58,691 INFO L445 BasicCegarLoop]: Path program histogram: [21, 21, 20, 14, 10, 7, 7, 6, 5, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-06-27 20:43:58,693 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-06-27 20:43:58,693 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-06-27 20:43:58,696 INFO L507 ceAbstractionStarter]: Automizer considered 2 witness invariants [2024-06-27 20:43:58,696 INFO L508 ceAbstractionStarter]: WitnessConsidered=2 [2024-06-27 20:43:58,697 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.06 08:43:58 BasicIcfg [2024-06-27 20:43:58,697 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-06-27 20:43:58,697 INFO L158 Benchmark]: Toolchain (without parser) took 164428.38ms. Allocated memory was 140.5MB in the beginning and 786.4MB in the end (delta: 645.9MB). Free memory was 81.0MB in the beginning and 560.0MB in the end (delta: -479.0MB). Peak memory consumption was 167.2MB. Max. memory is 16.1GB. [2024-06-27 20:43:58,698 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 140.5MB. Free memory is still 101.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 20:43:58,698 INFO L158 Benchmark]: Witness Parser took 0.15ms. Allocated memory is still 140.5MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 16.1GB. [2024-06-27 20:43:58,698 INFO L158 Benchmark]: CACSL2BoogieTranslator took 482.41ms. Allocated memory is still 140.5MB. Free memory was 81.0MB in the beginning and 94.6MB in the end (delta: -13.6MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. [2024-06-27 20:43:58,698 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.86ms. Allocated memory is still 140.5MB. Free memory was 94.6MB in the beginning and 91.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-06-27 20:43:58,698 INFO L158 Benchmark]: Boogie Preprocessor took 38.84ms. Allocated memory is still 140.5MB. Free memory was 91.8MB in the beginning and 89.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-06-27 20:43:58,698 INFO L158 Benchmark]: RCFGBuilder took 558.70ms. Allocated memory is still 140.5MB. Free memory was 89.0MB in the beginning and 42.9MB in the end (delta: 46.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. [2024-06-27 20:43:58,699 INFO L158 Benchmark]: TraceAbstraction took 163303.08ms. Allocated memory was 140.5MB in the beginning and 786.4MB in the end (delta: 645.9MB). Free memory was 42.2MB in the beginning and 560.0MB in the end (delta: -517.8MB). Peak memory consumption was 128.1MB. Max. memory is 16.1GB. [2024-06-27 20:43:58,699 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 140.5MB. Free memory is still 101.3MB. There was no memory consumed. Max. memory is 16.1GB. * Witness Parser took 0.15ms. Allocated memory is still 140.5MB. Free memory is still 87.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 482.41ms. Allocated memory is still 140.5MB. Free memory was 81.0MB in the beginning and 94.6MB in the end (delta: -13.6MB). Peak memory consumption was 20.2MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.86ms. Allocated memory is still 140.5MB. Free memory was 94.6MB in the beginning and 91.8MB in the end (delta: 2.8MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.84ms. Allocated memory is still 140.5MB. Free memory was 91.8MB in the beginning and 89.0MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 558.70ms. Allocated memory is still 140.5MB. Free memory was 89.0MB in the beginning and 42.9MB in the end (delta: 46.1MB). Peak memory consumption was 46.1MB. Max. memory is 16.1GB. * TraceAbstraction took 163303.08ms. Allocated memory was 140.5MB in the beginning and 786.4MB in the end (delta: 645.9MB). Free memory was 42.2MB in the beginning and 560.0MB in the end (delta: -517.8MB). Peak memory consumption was 128.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 818]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - PositiveResult [Line: 819]: invariant of correctness witness holds For all program executions holds that invariant of correctness witness holds at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 52 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 163.2s, OverallIterations: 137, TraceHistogramMax: 1, PathProgramHistogramMax: 21, EmptinessCheckTime: 0.0s, AutomataDifference: 55.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 9574 SdHoareTripleChecker+Valid, 29.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8084 mSDsluCounter, 7340 SdHoareTripleChecker+Invalid, 24.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6771 mSDsCounter, 1622 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 53008 IncrementalHoareTripleChecker+Invalid, 54630 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1622 mSolverCounterUnsat, 569 mSDtfsCounter, 53008 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1586 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1586 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3802 ImplicationChecksByTransitivity, 43.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1367occurred in iteration=104, InterpolantAutomatonStates: 1397, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 105.7s InterpolantComputationTime, 2375 NumberOfCodeBlocks, 2375 NumberOfCodeBlocksAsserted, 137 NumberOfCheckSat, 2238 ConstructedInterpolants, 0 QuantifiedInterpolants, 103808 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 137 InterpolantComputations, 137 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-06-27 20:43:58,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE