./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c --full-output --witness-type correctness_witness --witnessparser.only.consider.loop.invariants false --validate ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-misc-2.wvr.yml/witness.yml --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 80b1b132 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/weaver/parallel-misc-2.wvr.c ./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-misc-2.wvr.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 --- Real Ultimate output --- This is Ultimate 0.2.4-?-80b1b13-m [2024-01-31 17:00:36,406 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-31 17:00:36,466 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-31 17:00:36,469 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-31 17:00:36,470 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-31 17:00:36,490 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-31 17:00:36,491 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-31 17:00:36,491 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-31 17:00:36,492 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-31 17:00:36,495 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-31 17:00:36,495 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-31 17:00:36,495 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-31 17:00:36,496 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-31 17:00:36,497 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-31 17:00:36,497 INFO L153 SettingsManager]: * Use SBE=true [2024-01-31 17:00:36,497 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-31 17:00:36,497 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-31 17:00:36,498 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-31 17:00:36,498 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-31 17:00:36,498 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-31 17:00:36,498 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-31 17:00:36,499 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-31 17:00:36,499 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-31 17:00:36,499 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-31 17:00:36,499 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-31 17:00:36,499 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-31 17:00:36,499 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-31 17:00:36,500 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-31 17:00:36,500 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-31 17:00:36,500 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-31 17:00:36,502 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-31 17:00:36,502 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-31 17:00:36,502 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:00:36,502 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-31 17:00:36,502 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-31 17:00:36,503 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-31 17:00:36,503 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-31 17:00:36,503 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-31 17:00:36,503 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-31 17:00:36,503 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-31 17:00:36,504 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-31 17:00:36,504 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-31 17:00:36,504 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-31 17:00:36,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessparser: Only consider loop invariants -> false [2024-01-31 17:00:36,712 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-31 17:00:36,731 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-31 17:00:36,733 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-31 17:00:36,734 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-31 17:00:36,735 INFO L274 PluginConnector]: CDTParser initialized [2024-01-31 17:00:36,736 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2024-01-31 17:00:37,794 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-31 17:00:37,951 INFO L384 CDTParser]: Found 1 translation units. [2024-01-31 17:00:37,985 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2024-01-31 17:00:38,000 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/557129ea4/5183ca3bb91544b2ab18ad2ebe7a3034/FLAGe4854d27b [2024-01-31 17:00:38,010 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/557129ea4/5183ca3bb91544b2ab18ad2ebe7a3034 [2024-01-31 17:00:38,012 INFO L270 PluginConnector]: Initializing Witness Parser... [2024-01-31 17:00:38,012 INFO L274 PluginConnector]: Witness Parser initialized [2024-01-31 17:00:38,014 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/./goblint.2023-12-19_14-39-08.files/SV-COMP24_unreach-call/parallel-misc-2.wvr.yml/witness.yml [2024-01-31 17:00:38,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-31 17:00:38,136 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2024-01-31 17:00:38,136 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-31 17:00:38,136 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-31 17:00:38,140 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-31 17:00:38,140 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:00:38" (1/2) ... [2024-01-31 17:00:38,141 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@151a5504 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:00:38, skipping insertion in model container [2024-01-31 17:00:38,141 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 05:00:38" (1/2) ... [2024-01-31 17:00:38,142 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7b1ca517 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 05:00:38, skipping insertion in model container [2024-01-31 17:00:38,143 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:00:38" (2/2) ... [2024-01-31 17:00:38,143 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@151a5504 and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:38, skipping insertion in model container [2024-01-31 17:00:38,143 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:00:38" (2/2) ... [2024-01-31 17:00:38,144 INFO L83 nessWitnessExtractor]: Extracting all invariants from correctness witness [2024-01-31 17:00:38,170 INFO L93 nessWitnessExtractor]: Witness did not contain any usable entries. [2024-01-31 17:00:38,191 INFO L179 MainTranslator]: Built tables and reachable declarations [2024-01-31 17:00:38,323 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c[2580,2593] [2024-01-31 17:00:38,327 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:00:38,334 INFO L204 MainTranslator]: Completed pre-run [2024-01-31 17:00:38,348 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c[2580,2593] [2024-01-31 17:00:38,349 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-31 17:00:38,364 INFO L208 MainTranslator]: Completed translation [2024-01-31 17:00:38,365 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:38 WrapperNode [2024-01-31 17:00:38,365 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-31 17:00:38,366 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-31 17:00:38,366 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-31 17:00:38,366 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-31 17:00:38,371 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 31.01 05:00:38" (1/1) ... [2024-01-31 17:00:38,385 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 31.01 05:00:38" (1/1) ... [2024-01-31 17:00:38,408 INFO L138 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2024-01-31 17:00:38,408 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-31 17:00:38,409 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-31 17:00:38,409 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-31 17:00:38,409 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-31 17:00:38,418 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:38" (1/1) ... [2024-01-31 17:00:38,418 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:38" (1/1) ... [2024-01-31 17:00:38,422 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:38" (1/1) ... [2024-01-31 17:00:38,447 INFO L175 MemorySlicer]: Split 6 memory accesses to 3 slices as follows [2, 2, 2]. 33 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0]. The 2 writes are split as follows [0, 1, 1]. [2024-01-31 17:00:38,449 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:38" (1/1) ... [2024-01-31 17:00:38,449 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:38" (1/1) ... [2024-01-31 17:00:38,457 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:38" (1/1) ... [2024-01-31 17:00:38,460 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:38" (1/1) ... [2024-01-31 17:00:38,464 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:38" (1/1) ... [2024-01-31 17:00:38,465 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:38" (1/1) ... [2024-01-31 17:00:38,468 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-31 17:00:38,470 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-31 17:00:38,471 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-31 17:00:38,471 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-31 17:00:38,472 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:38" (1/1) ... [2024-01-31 17:00:38,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-31 17:00:38,484 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:00:38,556 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) [2024-01-31 17:00:38,557 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 [2024-01-31 17:00:38,590 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-31 17:00:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-31 17:00:38,591 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-31 17:00:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-31 17:00:38,591 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-31 17:00:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-31 17:00:38,591 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-31 17:00:38,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-31 17:00:38,592 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-31 17:00:38,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-31 17:00:38,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-31 17:00:38,592 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-31 17:00:38,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-31 17:00:38,592 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-31 17:00:38,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-31 17:00:38,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-31 17:00:38,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-31 17:00:38,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-31 17:00:38,593 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-31 17:00:38,593 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-31 17:00:38,594 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-31 17:00:38,671 INFO L244 CfgBuilder]: Building ICFG [2024-01-31 17:00:38,673 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-31 17:00:38,810 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-31 17:00:38,810 INFO L293 CfgBuilder]: Performing block encoding [2024-01-31 17:00:38,921 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-31 17:00:38,922 INFO L320 CfgBuilder]: Removed 2 assume(true) statements. [2024-01-31 17:00:38,922 INFO L201 PluginConnector]: Adding new model witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:00:38 BoogieIcfgContainer [2024-01-31 17:00:38,922 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-31 17:00:38,924 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-31 17:00:38,924 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-31 17:00:38,927 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-31 17:00:38,927 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 05:00:38" (1/4) ... [2024-01-31 17:00:38,927 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c76b20b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 05:00:38, skipping insertion in model container [2024-01-31 17:00:38,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.witnessparser CORRECTNESS_WITNESS 31.01 05:00:38" (2/4) ... [2024-01-31 17:00:38,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c76b20b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:00:38, skipping insertion in model container [2024-01-31 17:00:38,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator CORRECTNESS_WITNESS 31.01 05:00:38" (3/4) ... [2024-01-31 17:00:38,928 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c76b20b and model type witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CORRECTNESS_WITNESS 31.01 05:00:38, skipping insertion in model container [2024-01-31 17:00:38,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "witness.yml de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 05:00:38" (4/4) ... [2024-01-31 17:00:38,929 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2024-01-31 17:00:38,943 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-31 17:00:38,943 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-31 17:00:38,943 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-31 17:00:39,002 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-31 17:00:39,040 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 32 places, 29 transitions, 72 flow [2024-01-31 17:00:39,073 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2024-01-31 17:00:39,079 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 17:00:39,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36 conditions, 27 events. 4/27 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 21. Up to 2 conditions per place. [2024-01-31 17:00:39,084 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 29 transitions, 72 flow [2024-01-31 17:00:39,088 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 26 transitions, 64 flow [2024-01-31 17:00:39,104 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-31 17:00:39,111 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;@12da3da8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-31 17:00:39,112 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-01-31 17:00:39,128 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-31 17:00:39,129 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2024-01-31 17:00:39,129 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-31 17:00:39,129 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:39,130 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:39,131 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:00:39,135 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:39,135 INFO L85 PathProgramCache]: Analyzing trace with hash -1683761517, now seen corresponding path program 1 times [2024-01-31 17:00:39,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:39,143 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451114223] [2024-01-31 17:00:39,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:39,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:39,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:39,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:00:39,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:39,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451114223] [2024-01-31 17:00:39,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451114223] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:39,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:00:39,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-01-31 17:00:39,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801524858] [2024-01-31 17:00:39,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:39,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-31 17:00:39,443 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:39,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-31 17:00:39,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-31 17:00:39,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-01-31 17:00:39,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 26 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:39,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:39,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-01-31 17:00:39,477 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:39,583 INFO L124 PetriNetUnfolderBase]: 140/271 cut-off events. [2024-01-31 17:00:39,583 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2024-01-31 17:00:39,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 499 conditions, 271 events. 140/271 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1045 event pairs, 13 based on Foata normal form. 1/230 useless extension candidates. Maximal degree in co-relation 404. Up to 178 conditions per place. [2024-01-31 17:00:39,589 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 23 selfloop transitions, 5 changer transitions 1/38 dead transitions. [2024-01-31 17:00:39,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 38 transitions, 155 flow [2024-01-31 17:00:39,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-31 17:00:39,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-31 17:00:39,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 63 transitions. [2024-01-31 17:00:39,600 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7241379310344828 [2024-01-31 17:00:39,601 INFO L175 Difference]: Start difference. First operand has 29 places, 26 transitions, 64 flow. Second operand 3 states and 63 transitions. [2024-01-31 17:00:39,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 38 transitions, 155 flow [2024-01-31 17:00:39,605 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 38 transitions, 141 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-31 17:00:39,607 INFO L231 Difference]: Finished difference. Result has 28 places, 30 transitions, 89 flow [2024-01-31 17:00:39,608 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=28, PETRI_TRANSITIONS=30} [2024-01-31 17:00:39,611 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, -1 predicate places. [2024-01-31 17:00:39,612 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 30 transitions, 89 flow [2024-01-31 17:00:39,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.666666666666666) internal successors, (44), 3 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:39,612 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:39,612 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:39,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-31 17:00:39,613 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:00:39,613 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:39,613 INFO L85 PathProgramCache]: Analyzing trace with hash -547186125, now seen corresponding path program 1 times [2024-01-31 17:00:39,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:39,613 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729403775] [2024-01-31 17:00:39,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:39,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:39,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:39,729 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:00:39,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:39,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729403775] [2024-01-31 17:00:39,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729403775] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:39,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:00:39,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:00:39,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637807865] [2024-01-31 17:00:39,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:39,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:00:39,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:39,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:00:39,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:00:39,734 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-01-31 17:00:39,734 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 30 transitions, 89 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:39,734 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:39,734 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-01-31 17:00:39,734 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:39,881 INFO L124 PetriNetUnfolderBase]: 183/337 cut-off events. [2024-01-31 17:00:39,881 INFO L125 PetriNetUnfolderBase]: For 49/49 co-relation queries the response was YES. [2024-01-31 17:00:39,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 716 conditions, 337 events. 183/337 cut-off events. For 49/49 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1411 event pairs, 17 based on Foata normal form. 0/248 useless extension candidates. Maximal degree in co-relation 358. Up to 129 conditions per place. [2024-01-31 17:00:39,887 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 37 selfloop transitions, 9 changer transitions 3/60 dead transitions. [2024-01-31 17:00:39,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 60 transitions, 262 flow [2024-01-31 17:00:39,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:00:39,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:00:39,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 103 transitions. [2024-01-31 17:00:39,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7103448275862069 [2024-01-31 17:00:39,892 INFO L175 Difference]: Start difference. First operand has 28 places, 30 transitions, 89 flow. Second operand 5 states and 103 transitions. [2024-01-31 17:00:39,892 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 60 transitions, 262 flow [2024-01-31 17:00:39,893 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 60 transitions, 255 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-01-31 17:00:39,898 INFO L231 Difference]: Finished difference. Result has 34 places, 37 transitions, 141 flow [2024-01-31 17:00:39,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=141, PETRI_PLACES=34, PETRI_TRANSITIONS=37} [2024-01-31 17:00:39,900 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 5 predicate places. [2024-01-31 17:00:39,902 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 37 transitions, 141 flow [2024-01-31 17:00:39,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:39,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:39,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:39,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-31 17:00:39,906 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:00:39,906 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:39,906 INFO L85 PathProgramCache]: Analyzing trace with hash 995437461, now seen corresponding path program 2 times [2024-01-31 17:00:39,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:39,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540660347] [2024-01-31 17:00:39,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:39,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:39,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:40,091 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:00:40,092 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:40,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540660347] [2024-01-31 17:00:40,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540660347] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:40,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:00:40,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:00:40,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829832454] [2024-01-31 17:00:40,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:40,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:00:40,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:40,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:00:40,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:00:40,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-01-31 17:00:40,100 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 37 transitions, 141 flow. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:40,100 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:40,100 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-01-31 17:00:40,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:40,203 INFO L124 PetriNetUnfolderBase]: 172/354 cut-off events. [2024-01-31 17:00:40,203 INFO L125 PetriNetUnfolderBase]: For 215/219 co-relation queries the response was YES. [2024-01-31 17:00:40,204 INFO L83 FinitePrefix]: Finished finitePrefix Result has 887 conditions, 354 events. 172/354 cut-off events. For 215/219 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1577 event pairs, 13 based on Foata normal form. 18/332 useless extension candidates. Maximal degree in co-relation 248. Up to 86 conditions per place. [2024-01-31 17:00:40,206 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 41 selfloop transitions, 12 changer transitions 3/67 dead transitions. [2024-01-31 17:00:40,206 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 67 transitions, 359 flow [2024-01-31 17:00:40,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:00:40,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:00:40,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 105 transitions. [2024-01-31 17:00:40,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7241379310344828 [2024-01-31 17:00:40,211 INFO L175 Difference]: Start difference. First operand has 34 places, 37 transitions, 141 flow. Second operand 5 states and 105 transitions. [2024-01-31 17:00:40,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 38 places, 67 transitions, 359 flow [2024-01-31 17:00:40,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 67 transitions, 359 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:00:40,214 INFO L231 Difference]: Finished difference. Result has 42 places, 42 transitions, 227 flow [2024-01-31 17:00:40,214 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=227, PETRI_PLACES=42, PETRI_TRANSITIONS=42} [2024-01-31 17:00:40,215 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 13 predicate places. [2024-01-31 17:00:40,215 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 42 transitions, 227 flow [2024-01-31 17:00:40,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:40,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:40,216 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:40,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-31 17:00:40,216 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:00:40,216 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:40,217 INFO L85 PathProgramCache]: Analyzing trace with hash 267782639, now seen corresponding path program 1 times [2024-01-31 17:00:40,217 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:40,217 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420704655] [2024-01-31 17:00:40,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:40,218 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:40,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:40,304 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:00:40,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:40,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420704655] [2024-01-31 17:00:40,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420704655] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:40,308 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:00:40,308 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:00:40,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281366444] [2024-01-31 17:00:40,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:40,309 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:00:40,309 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:40,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:00:40,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:00:40,314 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-01-31 17:00:40,314 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 42 transitions, 227 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:40,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:40,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-01-31 17:00:40,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:40,397 INFO L124 PetriNetUnfolderBase]: 169/337 cut-off events. [2024-01-31 17:00:40,397 INFO L125 PetriNetUnfolderBase]: For 653/677 co-relation queries the response was YES. [2024-01-31 17:00:40,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1123 conditions, 337 events. 169/337 cut-off events. For 653/677 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1481 event pairs, 17 based on Foata normal form. 12/310 useless extension candidates. Maximal degree in co-relation 333. Up to 158 conditions per place. [2024-01-31 17:00:40,400 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 45 selfloop transitions, 8 changer transitions 4/68 dead transitions. [2024-01-31 17:00:40,400 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 68 transitions, 447 flow [2024-01-31 17:00:40,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:00:40,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:00:40,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 102 transitions. [2024-01-31 17:00:40,401 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7034482758620689 [2024-01-31 17:00:40,401 INFO L175 Difference]: Start difference. First operand has 42 places, 42 transitions, 227 flow. Second operand 5 states and 102 transitions. [2024-01-31 17:00:40,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 68 transitions, 447 flow [2024-01-31 17:00:40,404 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 68 transitions, 443 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-01-31 17:00:40,405 INFO L231 Difference]: Finished difference. Result has 48 places, 45 transitions, 274 flow [2024-01-31 17:00:40,405 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=274, PETRI_PLACES=48, PETRI_TRANSITIONS=45} [2024-01-31 17:00:40,406 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 19 predicate places. [2024-01-31 17:00:40,406 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 45 transitions, 274 flow [2024-01-31 17:00:40,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:40,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:40,406 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:40,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-31 17:00:40,407 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:00:40,407 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:40,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1954630385, now seen corresponding path program 2 times [2024-01-31 17:00:40,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:40,408 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531570897] [2024-01-31 17:00:40,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:40,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:40,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:40,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:00:40,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:40,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531570897] [2024-01-31 17:00:40,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531570897] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:40,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:00:40,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-31 17:00:40,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731476928] [2024-01-31 17:00:40,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:40,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:00:40,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:40,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:00:40,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:00:40,480 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-01-31 17:00:40,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 45 transitions, 274 flow. Second operand has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:40,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:40,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-01-31 17:00:40,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:40,561 INFO L124 PetriNetUnfolderBase]: 155/328 cut-off events. [2024-01-31 17:00:40,561 INFO L125 PetriNetUnfolderBase]: For 670/678 co-relation queries the response was YES. [2024-01-31 17:00:40,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1085 conditions, 328 events. 155/328 cut-off events. For 670/678 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1313 event pairs, 15 based on Foata normal form. 16/308 useless extension candidates. Maximal degree in co-relation 769. Up to 91 conditions per place. [2024-01-31 17:00:40,564 INFO L140 encePairwiseOnDemand]: 22/29 looper letters, 41 selfloop transitions, 12 changer transitions 3/67 dead transitions. [2024-01-31 17:00:40,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 67 transitions, 490 flow [2024-01-31 17:00:40,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:00:40,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:00:40,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 98 transitions. [2024-01-31 17:00:40,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6758620689655173 [2024-01-31 17:00:40,566 INFO L175 Difference]: Start difference. First operand has 48 places, 45 transitions, 274 flow. Second operand 5 states and 98 transitions. [2024-01-31 17:00:40,566 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 67 transitions, 490 flow [2024-01-31 17:00:40,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 67 transitions, 474 flow, removed 6 selfloop flow, removed 1 redundant places. [2024-01-31 17:00:40,570 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 337 flow [2024-01-31 17:00:40,570 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=249, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=337, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2024-01-31 17:00:40,571 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 25 predicate places. [2024-01-31 17:00:40,571 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 337 flow [2024-01-31 17:00:40,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.25) internal successors, (57), 4 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:40,571 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:40,571 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:40,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-31 17:00:40,572 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:00:40,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:40,572 INFO L85 PathProgramCache]: Analyzing trace with hash -922958189, now seen corresponding path program 1 times [2024-01-31 17:00:40,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:40,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729560842] [2024-01-31 17:00:40,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:40,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:40,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:00:40,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:40,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729560842] [2024-01-31 17:00:40,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729560842] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:00:40,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1203480953] [2024-01-31 17:00:40,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:40,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:40,721 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:00:40,722 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:00:40,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-31 17:00:40,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:40,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-31 17:00:40,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:00:41,001 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:00:41,001 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:00:41,157 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:00:41,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1203480953] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:00:41,158 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:00:41,158 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 10 [2024-01-31 17:00:41,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074740539] [2024-01-31 17:00:41,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:00:41,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-01-31 17:00:41,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:41,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-01-31 17:00:41,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2024-01-31 17:00:41,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-01-31 17:00:41,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 337 flow. Second operand has 11 states, 11 states have (on average 13.181818181818182) internal successors, (145), 11 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:41,182 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:41,182 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-01-31 17:00:41,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:41,540 INFO L124 PetriNetUnfolderBase]: 340/659 cut-off events. [2024-01-31 17:00:41,541 INFO L125 PetriNetUnfolderBase]: For 1833/1833 co-relation queries the response was YES. [2024-01-31 17:00:41,543 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2359 conditions, 659 events. 340/659 cut-off events. For 1833/1833 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 2875 event pairs, 8 based on Foata normal form. 16/621 useless extension candidates. Maximal degree in co-relation 1872. Up to 189 conditions per place. [2024-01-31 17:00:41,546 INFO L140 encePairwiseOnDemand]: 18/29 looper letters, 89 selfloop transitions, 26 changer transitions 0/122 dead transitions. [2024-01-31 17:00:41,546 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 122 transitions, 979 flow [2024-01-31 17:00:41,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-31 17:00:41,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-31 17:00:41,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 197 transitions. [2024-01-31 17:00:41,548 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6175548589341693 [2024-01-31 17:00:41,549 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 337 flow. Second operand 11 states and 197 transitions. [2024-01-31 17:00:41,549 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 122 transitions, 979 flow [2024-01-31 17:00:41,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 122 transitions, 956 flow, removed 10 selfloop flow, removed 1 redundant places. [2024-01-31 17:00:41,555 INFO L231 Difference]: Finished difference. Result has 67 places, 61 transitions, 539 flow [2024-01-31 17:00:41,555 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=320, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=539, PETRI_PLACES=67, PETRI_TRANSITIONS=61} [2024-01-31 17:00:41,557 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 38 predicate places. [2024-01-31 17:00:41,558 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 61 transitions, 539 flow [2024-01-31 17:00:41,558 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 13.181818181818182) internal successors, (145), 11 states have internal predecessors, (145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:41,558 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:41,559 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:41,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-31 17:00:41,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2024-01-31 17:00:41,764 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:00:41,765 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:41,765 INFO L85 PathProgramCache]: Analyzing trace with hash 2028807533, now seen corresponding path program 2 times [2024-01-31 17:00:41,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:41,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1452595338] [2024-01-31 17:00:41,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:41,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:41,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:41,868 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:00:41,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:41,869 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1452595338] [2024-01-31 17:00:41,869 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1452595338] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:41,869 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:00:41,869 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:00:41,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161945528] [2024-01-31 17:00:41,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:41,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:00:41,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:41,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:00:41,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:00:41,873 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-01-31 17:00:41,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 61 transitions, 539 flow. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:41,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:41,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-01-31 17:00:41,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:42,022 INFO L124 PetriNetUnfolderBase]: 560/1191 cut-off events. [2024-01-31 17:00:42,023 INFO L125 PetriNetUnfolderBase]: For 5438/5474 co-relation queries the response was YES. [2024-01-31 17:00:42,026 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4677 conditions, 1191 events. 560/1191 cut-off events. For 5438/5474 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 7124 event pairs, 114 based on Foata normal form. 3/1067 useless extension candidates. Maximal degree in co-relation 4180. Up to 380 conditions per place. [2024-01-31 17:00:42,031 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 77 selfloop transitions, 21 changer transitions 0/120 dead transitions. [2024-01-31 17:00:42,031 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 120 transitions, 1315 flow [2024-01-31 17:00:42,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:00:42,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:00:42,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 87 transitions. [2024-01-31 17:00:42,032 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-01-31 17:00:42,032 INFO L175 Difference]: Start difference. First operand has 67 places, 61 transitions, 539 flow. Second operand 4 states and 87 transitions. [2024-01-31 17:00:42,032 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 120 transitions, 1315 flow [2024-01-31 17:00:42,042 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 120 transitions, 1280 flow, removed 10 selfloop flow, removed 3 redundant places. [2024-01-31 17:00:42,044 INFO L231 Difference]: Finished difference. Result has 70 places, 82 transitions, 887 flow [2024-01-31 17:00:42,045 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=520, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=887, PETRI_PLACES=70, PETRI_TRANSITIONS=82} [2024-01-31 17:00:42,046 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 41 predicate places. [2024-01-31 17:00:42,046 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 82 transitions, 887 flow [2024-01-31 17:00:42,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:42,046 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:42,046 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:42,046 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-31 17:00:42,046 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:00:42,047 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:42,047 INFO L85 PathProgramCache]: Analyzing trace with hash 2089860085, now seen corresponding path program 1 times [2024-01-31 17:00:42,047 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:42,047 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338732253] [2024-01-31 17:00:42,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:42,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:42,206 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:00:42,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:42,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338732253] [2024-01-31 17:00:42,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338732253] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:00:42,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283740122] [2024-01-31 17:00:42,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:42,207 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:42,207 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:00:42,208 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:00:42,235 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-31 17:00:42,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:42,321 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 5 conjunts are in the unsatisfiable core [2024-01-31 17:00:42,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:00:42,433 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:00:42,433 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:00:42,527 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:00:42,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283740122] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:00:42,528 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:00:42,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 12 [2024-01-31 17:00:42,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600279946] [2024-01-31 17:00:42,528 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:00:42,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-01-31 17:00:42,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:42,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-01-31 17:00:42,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2024-01-31 17:00:42,550 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-01-31 17:00:42,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 82 transitions, 887 flow. Second operand has 13 states, 13 states have (on average 12.384615384615385) internal successors, (161), 13 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:42,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:42,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-01-31 17:00:42,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:43,113 INFO L124 PetriNetUnfolderBase]: 1716/3307 cut-off events. [2024-01-31 17:00:43,114 INFO L125 PetriNetUnfolderBase]: For 17568/17568 co-relation queries the response was YES. [2024-01-31 17:00:43,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14124 conditions, 3307 events. 1716/3307 cut-off events. For 17568/17568 co-relation queries the response was YES. Maximal size of possible extension queue 129. Compared 20907 event pairs, 238 based on Foata normal form. 96/3279 useless extension candidates. Maximal degree in co-relation 11854. Up to 817 conditions per place. [2024-01-31 17:00:43,136 INFO L140 encePairwiseOnDemand]: 19/29 looper letters, 201 selfloop transitions, 26 changer transitions 0/235 dead transitions. [2024-01-31 17:00:43,136 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 235 transitions, 2908 flow [2024-01-31 17:00:43,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-31 17:00:43,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-31 17:00:43,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 192 transitions. [2024-01-31 17:00:43,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6620689655172414 [2024-01-31 17:00:43,137 INFO L175 Difference]: Start difference. First operand has 70 places, 82 transitions, 887 flow. Second operand 10 states and 192 transitions. [2024-01-31 17:00:43,137 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 235 transitions, 2908 flow [2024-01-31 17:00:43,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 235 transitions, 2896 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-01-31 17:00:43,159 INFO L231 Difference]: Finished difference. Result has 82 places, 94 transitions, 1105 flow [2024-01-31 17:00:43,159 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=881, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1105, PETRI_PLACES=82, PETRI_TRANSITIONS=94} [2024-01-31 17:00:43,161 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 53 predicate places. [2024-01-31 17:00:43,161 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 94 transitions, 1105 flow [2024-01-31 17:00:43,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 12.384615384615385) internal successors, (161), 13 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:43,161 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:43,161 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:43,186 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-31 17:00:43,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-01-31 17:00:43,373 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:00:43,373 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:43,374 INFO L85 PathProgramCache]: Analyzing trace with hash -2088018947, now seen corresponding path program 2 times [2024-01-31 17:00:43,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:43,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [367028547] [2024-01-31 17:00:43,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:43,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:43,459 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-31 17:00:43,460 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:43,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [367028547] [2024-01-31 17:00:43,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [367028547] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:43,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:00:43,460 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:00:43,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984681558] [2024-01-31 17:00:43,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:43,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:00:43,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:43,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:00:43,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:00:43,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-01-31 17:00:43,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 94 transitions, 1105 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:43,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:43,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-01-31 17:00:43,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:44,124 INFO L124 PetriNetUnfolderBase]: 2857/6276 cut-off events. [2024-01-31 17:00:44,125 INFO L125 PetriNetUnfolderBase]: For 54433/54933 co-relation queries the response was YES. [2024-01-31 17:00:44,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30827 conditions, 6276 events. 2857/6276 cut-off events. For 54433/54933 co-relation queries the response was YES. Maximal size of possible extension queue 307. Compared 51561 event pairs, 984 based on Foata normal form. 132/5904 useless extension candidates. Maximal degree in co-relation 25566. Up to 1619 conditions per place. [2024-01-31 17:00:44,175 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 159 selfloop transitions, 23 changer transitions 0/209 dead transitions. [2024-01-31 17:00:44,176 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 209 transitions, 3005 flow [2024-01-31 17:00:44,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:00:44,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:00:44,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 88 transitions. [2024-01-31 17:00:44,177 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7586206896551724 [2024-01-31 17:00:44,177 INFO L175 Difference]: Start difference. First operand has 82 places, 94 transitions, 1105 flow. Second operand 4 states and 88 transitions. [2024-01-31 17:00:44,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 209 transitions, 3005 flow [2024-01-31 17:00:44,316 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 209 transitions, 2964 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-01-31 17:00:44,319 INFO L231 Difference]: Finished difference. Result has 85 places, 117 transitions, 1480 flow [2024-01-31 17:00:44,319 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1081, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=94, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=80, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1480, PETRI_PLACES=85, PETRI_TRANSITIONS=117} [2024-01-31 17:00:44,320 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 56 predicate places. [2024-01-31 17:00:44,320 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 117 transitions, 1480 flow [2024-01-31 17:00:44,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:44,320 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:44,320 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:44,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-01-31 17:00:44,321 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:00:44,321 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:44,321 INFO L85 PathProgramCache]: Analyzing trace with hash 938157211, now seen corresponding path program 1 times [2024-01-31 17:00:44,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:44,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247505047] [2024-01-31 17:00:44,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:44,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:44,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:44,472 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:00:44,472 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:44,472 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247505047] [2024-01-31 17:00:44,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247505047] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:00:44,473 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [774249580] [2024-01-31 17:00:44,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:44,473 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:44,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:00:44,474 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:00:44,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-31 17:00:44,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:44,545 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-31 17:00:44,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:00:44,604 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:00:44,604 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:00:44,663 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:00:44,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [774249580] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:00:44,664 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:00:44,664 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-01-31 17:00:44,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29788301] [2024-01-31 17:00:44,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:00:44,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:00:44,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:44,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:00:44,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:00:44,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-01-31 17:00:44,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 117 transitions, 1480 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:44,668 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:44,668 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-01-31 17:00:44,668 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:45,980 INFO L124 PetriNetUnfolderBase]: 5201/11287 cut-off events. [2024-01-31 17:00:45,981 INFO L125 PetriNetUnfolderBase]: For 87333/87887 co-relation queries the response was YES. [2024-01-31 17:00:46,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55459 conditions, 11287 events. 5201/11287 cut-off events. For 87333/87887 co-relation queries the response was YES. Maximal size of possible extension queue 485. Compared 101364 event pairs, 1270 based on Foata normal form. 102/11112 useless extension candidates. Maximal degree in co-relation 46588. Up to 5090 conditions per place. [2024-01-31 17:00:46,162 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 256 selfloop transitions, 20 changer transitions 1/303 dead transitions. [2024-01-31 17:00:46,162 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 303 transitions, 4502 flow [2024-01-31 17:00:46,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:00:46,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:00:46,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 140 transitions. [2024-01-31 17:00:46,164 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8045977011494253 [2024-01-31 17:00:46,164 INFO L175 Difference]: Start difference. First operand has 85 places, 117 transitions, 1480 flow. Second operand 6 states and 140 transitions. [2024-01-31 17:00:46,164 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 303 transitions, 4502 flow [2024-01-31 17:00:46,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 303 transitions, 4502 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:00:46,303 INFO L231 Difference]: Finished difference. Result has 91 places, 132 transitions, 1602 flow [2024-01-31 17:00:46,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1480, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1602, PETRI_PLACES=91, PETRI_TRANSITIONS=132} [2024-01-31 17:00:46,304 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 62 predicate places. [2024-01-31 17:00:46,305 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 132 transitions, 1602 flow [2024-01-31 17:00:46,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:46,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:46,305 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:46,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-31 17:00:46,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:46,512 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:00:46,512 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:46,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1731126019, now seen corresponding path program 2 times [2024-01-31 17:00:46,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:46,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376742555] [2024-01-31 17:00:46,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:46,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:46,680 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:00:46,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:46,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376742555] [2024-01-31 17:00:46,680 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376742555] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:00:46,680 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224246862] [2024-01-31 17:00:46,681 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-31 17:00:46,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:46,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:00:46,682 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:00:46,696 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-31 17:00:46,744 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-31 17:00:46,745 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:00:46,746 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-31 17:00:46,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:00:46,798 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:00:46,798 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:00:46,854 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:00:46,855 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224246862] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:00:46,855 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:00:46,855 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-01-31 17:00:46,855 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687229375] [2024-01-31 17:00:46,855 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:00:46,855 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:00:46,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:46,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:00:46,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:00:46,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-01-31 17:00:46,858 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 132 transitions, 1602 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:46,858 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:46,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-01-31 17:00:46,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:48,486 INFO L124 PetriNetUnfolderBase]: 6504/14161 cut-off events. [2024-01-31 17:00:48,486 INFO L125 PetriNetUnfolderBase]: For 118321/119347 co-relation queries the response was YES. [2024-01-31 17:00:48,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73858 conditions, 14161 events. 6504/14161 cut-off events. For 118321/119347 co-relation queries the response was YES. Maximal size of possible extension queue 597. Compared 131929 event pairs, 1653 based on Foata normal form. 164/13997 useless extension candidates. Maximal degree in co-relation 62750. Up to 7574 conditions per place. [2024-01-31 17:00:48,578 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 243 selfloop transitions, 24 changer transitions 1/294 dead transitions. [2024-01-31 17:00:48,578 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 96 places, 294 transitions, 4292 flow [2024-01-31 17:00:48,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:00:48,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:00:48,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 136 transitions. [2024-01-31 17:00:48,579 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7816091954022989 [2024-01-31 17:00:48,579 INFO L175 Difference]: Start difference. First operand has 91 places, 132 transitions, 1602 flow. Second operand 6 states and 136 transitions. [2024-01-31 17:00:48,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 96 places, 294 transitions, 4292 flow [2024-01-31 17:00:48,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 294 transitions, 4236 flow, removed 28 selfloop flow, removed 0 redundant places. [2024-01-31 17:00:48,779 INFO L231 Difference]: Finished difference. Result has 99 places, 149 transitions, 1766 flow [2024-01-31 17:00:48,780 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=132, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1766, PETRI_PLACES=99, PETRI_TRANSITIONS=149} [2024-01-31 17:00:48,781 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 70 predicate places. [2024-01-31 17:00:48,781 INFO L495 AbstractCegarLoop]: Abstraction has has 99 places, 149 transitions, 1766 flow [2024-01-31 17:00:48,781 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:48,781 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:48,781 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:48,792 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-01-31 17:00:48,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:48,992 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:00:48,993 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:48,993 INFO L85 PathProgramCache]: Analyzing trace with hash -272399107, now seen corresponding path program 3 times [2024-01-31 17:00:48,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:48,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306763786] [2024-01-31 17:00:48,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:48,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:49,150 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:00:49,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:49,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306763786] [2024-01-31 17:00:49,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306763786] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:00:49,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1248488019] [2024-01-31 17:00:49,150 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-31 17:00:49,150 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:49,150 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:00:49,279 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:00:49,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-31 17:00:49,351 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-01-31 17:00:49,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:00:49,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-31 17:00:49,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:00:49,408 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:00:49,408 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:00:49,464 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:00:49,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1248488019] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:00:49,464 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:00:49,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-01-31 17:00:49,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17005388] [2024-01-31 17:00:49,465 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:00:49,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:00:49,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:49,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:00:49,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:00:49,468 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-01-31 17:00:49,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 99 places, 149 transitions, 1766 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:49,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:49,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-01-31 17:00:49,468 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:51,896 INFO L124 PetriNetUnfolderBase]: 9270/20191 cut-off events. [2024-01-31 17:00:51,896 INFO L125 PetriNetUnfolderBase]: For 176067/177506 co-relation queries the response was YES. [2024-01-31 17:00:51,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107034 conditions, 20191 events. 9270/20191 cut-off events. For 176067/177506 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 200092 event pairs, 2027 based on Foata normal form. 317/20071 useless extension candidates. Maximal degree in co-relation 91117. Up to 9847 conditions per place. [2024-01-31 17:00:52,049 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 306 selfloop transitions, 35 changer transitions 1/368 dead transitions. [2024-01-31 17:00:52,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 368 transitions, 5326 flow [2024-01-31 17:00:52,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:00:52,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:00:52,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-01-31 17:00:52,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8218390804597702 [2024-01-31 17:00:52,051 INFO L175 Difference]: Start difference. First operand has 99 places, 149 transitions, 1766 flow. Second operand 6 states and 143 transitions. [2024-01-31 17:00:52,051 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 368 transitions, 5326 flow [2024-01-31 17:00:52,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 368 transitions, 5306 flow, removed 10 selfloop flow, removed 0 redundant places. [2024-01-31 17:00:52,522 INFO L231 Difference]: Finished difference. Result has 107 places, 179 transitions, 2115 flow [2024-01-31 17:00:52,522 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1754, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=123, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2115, PETRI_PLACES=107, PETRI_TRANSITIONS=179} [2024-01-31 17:00:52,523 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 78 predicate places. [2024-01-31 17:00:52,523 INFO L495 AbstractCegarLoop]: Abstraction has has 107 places, 179 transitions, 2115 flow [2024-01-31 17:00:52,523 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:52,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:52,523 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:52,540 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-31 17:00:52,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-01-31 17:00:52,741 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:00:52,741 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:52,741 INFO L85 PathProgramCache]: Analyzing trace with hash 86729053, now seen corresponding path program 1 times [2024-01-31 17:00:52,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:52,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520807976] [2024-01-31 17:00:52,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:52,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:52,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:52,825 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:00:52,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:52,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520807976] [2024-01-31 17:00:52,826 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520807976] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:00:52,826 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:00:52,826 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:00:52,826 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431830917] [2024-01-31 17:00:52,826 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:00:52,827 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:00:52,827 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:52,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:00:52,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:00:52,830 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-01-31 17:00:52,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 107 places, 179 transitions, 2115 flow. Second operand has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:52,831 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:52,831 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-01-31 17:00:52,831 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:55,187 INFO L124 PetriNetUnfolderBase]: 8948/19779 cut-off events. [2024-01-31 17:00:55,187 INFO L125 PetriNetUnfolderBase]: For 186383/187261 co-relation queries the response was YES. [2024-01-31 17:00:55,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105974 conditions, 19779 events. 8948/19779 cut-off events. For 186383/187261 co-relation queries the response was YES. Maximal size of possible extension queue 801. Compared 196577 event pairs, 2069 based on Foata normal form. 457/19847 useless extension candidates. Maximal degree in co-relation 91360. Up to 7226 conditions per place. [2024-01-31 17:00:55,360 INFO L140 encePairwiseOnDemand]: 27/29 looper letters, 221 selfloop transitions, 21 changer transitions 0/299 dead transitions. [2024-01-31 17:00:55,360 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 299 transitions, 3947 flow [2024-01-31 17:00:55,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:00:55,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:00:55,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 83 transitions. [2024-01-31 17:00:55,361 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7155172413793104 [2024-01-31 17:00:55,361 INFO L175 Difference]: Start difference. First operand has 107 places, 179 transitions, 2115 flow. Second operand 4 states and 83 transitions. [2024-01-31 17:00:55,361 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 299 transitions, 3947 flow [2024-01-31 17:00:55,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 299 transitions, 3899 flow, removed 24 selfloop flow, removed 0 redundant places. [2024-01-31 17:00:55,714 INFO L231 Difference]: Finished difference. Result has 112 places, 172 transitions, 2046 flow [2024-01-31 17:00:55,714 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=1975, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2046, PETRI_PLACES=112, PETRI_TRANSITIONS=172} [2024-01-31 17:00:55,714 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 83 predicate places. [2024-01-31 17:00:55,714 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 172 transitions, 2046 flow [2024-01-31 17:00:55,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.75) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:55,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:55,715 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:55,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-01-31 17:00:55,715 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:00:55,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:55,715 INFO L85 PathProgramCache]: Analyzing trace with hash 1901216453, now seen corresponding path program 4 times [2024-01-31 17:00:55,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:55,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1853271560] [2024-01-31 17:00:55,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:55,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:55,827 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:00:55,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:55,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1853271560] [2024-01-31 17:00:55,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1853271560] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:00:55,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [752792116] [2024-01-31 17:00:55,828 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-31 17:00:55,829 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:55,829 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:00:55,829 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:00:55,848 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-31 17:00:55,893 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-31 17:00:55,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:00:55,894 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-31 17:00:55,896 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:00:55,953 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:00:55,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:00:56,052 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:00:56,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [752792116] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:00:56,053 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:00:56,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 4 [2024-01-31 17:00:56,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804323995] [2024-01-31 17:00:56,054 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:00:56,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-31 17:00:56,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:56,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-31 17:00:56,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-31 17:00:56,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-01-31 17:00:56,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 172 transitions, 2046 flow. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:56,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:56,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-01-31 17:00:56,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:00:58,518 INFO L124 PetriNetUnfolderBase]: 8576/18917 cut-off events. [2024-01-31 17:00:58,519 INFO L125 PetriNetUnfolderBase]: For 206643/208483 co-relation queries the response was YES. [2024-01-31 17:00:58,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109516 conditions, 18917 events. 8576/18917 cut-off events. For 206643/208483 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 186594 event pairs, 2203 based on Foata normal form. 428/18964 useless extension candidates. Maximal degree in co-relation 92938. Up to 13739 conditions per place. [2024-01-31 17:00:58,699 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 217 selfloop transitions, 20 changer transitions 1/265 dead transitions. [2024-01-31 17:00:58,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 265 transitions, 3719 flow [2024-01-31 17:00:58,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-31 17:00:58,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-31 17:00:58,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 114 transitions. [2024-01-31 17:00:58,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.7862068965517242 [2024-01-31 17:00:58,700 INFO L175 Difference]: Start difference. First operand has 112 places, 172 transitions, 2046 flow. Second operand 5 states and 114 transitions. [2024-01-31 17:00:58,701 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 265 transitions, 3719 flow [2024-01-31 17:00:59,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 265 transitions, 3719 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-01-31 17:00:59,093 INFO L231 Difference]: Finished difference. Result has 119 places, 187 transitions, 2264 flow [2024-01-31 17:00:59,093 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2046, PETRI_DIFFERENCE_MINUEND_PLACES=112, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=2264, PETRI_PLACES=119, PETRI_TRANSITIONS=187} [2024-01-31 17:00:59,094 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 90 predicate places. [2024-01-31 17:00:59,094 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 187 transitions, 2264 flow [2024-01-31 17:00:59,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:59,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:00:59,094 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:00:59,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-31 17:00:59,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:59,295 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:00:59,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:00:59,295 INFO L85 PathProgramCache]: Analyzing trace with hash 600391779, now seen corresponding path program 5 times [2024-01-31 17:00:59,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:00:59,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326508746] [2024-01-31 17:00:59,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:00:59,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:00:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:00:59,415 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:00:59,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:00:59,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326508746] [2024-01-31 17:00:59,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326508746] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:00:59,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1868631772] [2024-01-31 17:00:59,416 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-31 17:00:59,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:00:59,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:00:59,429 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:00:59,454 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-01-31 17:00:59,487 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2024-01-31 17:00:59,487 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:00:59,488 INFO L262 TraceCheckSpWp]: Trace formula consists of 142 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-31 17:00:59,489 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:00:59,537 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:00:59,538 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:00:59,590 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-31 17:00:59,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1868631772] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:00:59,590 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:00:59,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-01-31 17:00:59,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632891722] [2024-01-31 17:00:59,591 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:00:59,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-31 17:00:59,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:00:59,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-31 17:00:59,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-01-31 17:00:59,594 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-01-31 17:00:59,594 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 187 transitions, 2264 flow. Second operand has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:00:59,594 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:00:59,594 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-01-31 17:00:59,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:02,904 INFO L124 PetriNetUnfolderBase]: 11109/24626 cut-off events. [2024-01-31 17:01:02,904 INFO L125 PetriNetUnfolderBase]: For 276684/279122 co-relation queries the response was YES. [2024-01-31 17:01:03,045 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144242 conditions, 24626 events. 11109/24626 cut-off events. For 276684/279122 co-relation queries the response was YES. Maximal size of possible extension queue 1089. Compared 253615 event pairs, 2333 based on Foata normal form. 653/24832 useless extension candidates. Maximal degree in co-relation 121340. Up to 12264 conditions per place. [2024-01-31 17:01:03,147 INFO L140 encePairwiseOnDemand]: 23/29 looper letters, 332 selfloop transitions, 44 changer transitions 1/404 dead transitions. [2024-01-31 17:01:03,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 404 transitions, 6114 flow [2024-01-31 17:01:03,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-31 17:01:03,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-31 17:01:03,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 143 transitions. [2024-01-31 17:01:03,148 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.8218390804597702 [2024-01-31 17:01:03,148 INFO L175 Difference]: Start difference. First operand has 119 places, 187 transitions, 2264 flow. Second operand 6 states and 143 transitions. [2024-01-31 17:01:03,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 404 transitions, 6114 flow [2024-01-31 17:01:03,897 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 404 transitions, 6090 flow, removed 12 selfloop flow, removed 0 redundant places. [2024-01-31 17:01:03,901 INFO L231 Difference]: Finished difference. Result has 127 places, 211 transitions, 2630 flow [2024-01-31 17:01:03,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2240, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2630, PETRI_PLACES=127, PETRI_TRANSITIONS=211} [2024-01-31 17:01:03,901 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 98 predicate places. [2024-01-31 17:01:03,901 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 211 transitions, 2630 flow [2024-01-31 17:01:03,901 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.166666666666666) internal successors, (85), 6 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:03,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:03,902 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:03,914 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-01-31 17:01:04,108 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:01:04,109 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:01:04,109 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:04,109 INFO L85 PathProgramCache]: Analyzing trace with hash 1722796381, now seen corresponding path program 1 times [2024-01-31 17:01:04,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:04,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [312247369] [2024-01-31 17:01:04,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:04,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:04,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:04,241 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-01-31 17:01:04,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:04,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [312247369] [2024-01-31 17:01:04,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [312247369] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-31 17:01:04,242 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-31 17:01:04,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-31 17:01:04,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440557757] [2024-01-31 17:01:04,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-31 17:01:04,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-31 17:01:04,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:04,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-31 17:01:04,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-31 17:01:04,245 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-01-31 17:01:04,245 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 211 transitions, 2630 flow. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:04,245 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:04,245 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-01-31 17:01:04,245 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:05,907 INFO L124 PetriNetUnfolderBase]: 5289/12394 cut-off events. [2024-01-31 17:01:05,907 INFO L125 PetriNetUnfolderBase]: For 169492/171328 co-relation queries the response was YES. [2024-01-31 17:01:05,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 75803 conditions, 12394 events. 5289/12394 cut-off events. For 169492/171328 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 116899 event pairs, 988 based on Foata normal form. 503/12427 useless extension candidates. Maximal degree in co-relation 65897. Up to 4420 conditions per place. [2024-01-31 17:01:05,993 INFO L140 encePairwiseOnDemand]: 26/29 looper letters, 134 selfloop transitions, 28 changer transitions 0/227 dead transitions. [2024-01-31 17:01:05,993 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 227 transitions, 3305 flow [2024-01-31 17:01:05,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-31 17:01:05,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-31 17:01:05,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 80 transitions. [2024-01-31 17:01:05,994 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6896551724137931 [2024-01-31 17:01:05,994 INFO L175 Difference]: Start difference. First operand has 127 places, 211 transitions, 2630 flow. Second operand 4 states and 80 transitions. [2024-01-31 17:01:05,994 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 227 transitions, 3305 flow [2024-01-31 17:01:06,229 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 227 transitions, 3270 flow, removed 14 selfloop flow, removed 1 redundant places. [2024-01-31 17:01:06,232 INFO L231 Difference]: Finished difference. Result has 131 places, 179 transitions, 2310 flow [2024-01-31 17:01:06,232 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2209, PETRI_DIFFERENCE_MINUEND_PLACES=126, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=149, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2310, PETRI_PLACES=131, PETRI_TRANSITIONS=179} [2024-01-31 17:01:06,232 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 102 predicate places. [2024-01-31 17:01:06,233 INFO L495 AbstractCegarLoop]: Abstraction has has 131 places, 179 transitions, 2310 flow [2024-01-31 17:01:06,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:06,233 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:01:06,233 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:01:06,233 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-01-31 17:01:06,233 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:01:06,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:01:06,233 INFO L85 PathProgramCache]: Analyzing trace with hash -40063361, now seen corresponding path program 6 times [2024-01-31 17:01:06,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:01:06,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974650258] [2024-01-31 17:01:06,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:01:06,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:01:06,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:01:06,502 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 1 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:06,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:01:06,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974650258] [2024-01-31 17:01:06,503 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974650258] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:01:06,503 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363749434] [2024-01-31 17:01:06,503 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-31 17:01:06,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:01:06,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:01:06,504 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:01:06,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-01-31 17:01:06,619 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2024-01-31 17:01:06,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-31 17:01:06,621 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2024-01-31 17:01:06,622 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:01:06,965 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:06,965 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:01:12,870 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:01:12,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363749434] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:01:12,870 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:01:12,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19 [2024-01-31 17:01:12,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752044791] [2024-01-31 17:01:12,871 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:01:12,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-01-31 17:01:12,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:01:12,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-01-31 17:01:12,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=293, Unknown=0, NotChecked=0, Total=380 [2024-01-31 17:01:12,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 29 [2024-01-31 17:01:12,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 179 transitions, 2310 flow. Second operand has 20 states, 20 states have (on average 12.3) internal successors, (246), 20 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:01:12,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:01:12,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 29 [2024-01-31 17:01:12,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:01:21,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:01:31,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:01:39,850 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.35s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:01:51,966 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:01:56,981 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:02:14,641 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.43s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:02:31,227 WARN L293 SmtUtils]: Spent 8.03s on a formula simplification. DAG size of input: 34 DAG size of output: 27 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 17:02:32,928 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.69s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:02:38,220 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:02:42,296 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:02:59,275 WARN L293 SmtUtils]: Spent 8.29s on a formula simplification. DAG size of input: 48 DAG size of output: 41 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 17:03:03,283 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:03:07,960 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:03:12,010 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:03:13,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.08s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:03:17,647 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:03:27,308 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:03:32,614 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:03:36,638 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:04:28,968 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.78s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:04:30,910 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:05:14,613 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 3.95s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:05:16,131 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 17:05:19,401 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.57s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:05:21,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.47s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:05:27,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:05:31,478 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:05:40,761 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:05:50,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:06:21,253 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:06:23,428 INFO L124 PetriNetUnfolderBase]: 38400/78858 cut-off events. [2024-01-31 17:06:23,429 INFO L125 PetriNetUnfolderBase]: For 971922/971922 co-relation queries the response was YES. [2024-01-31 17:06:23,903 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480170 conditions, 78858 events. 38400/78858 cut-off events. For 971922/971922 co-relation queries the response was YES. Maximal size of possible extension queue 2190. Compared 849604 event pairs, 1824 based on Foata normal form. 2534/81390 useless extension candidates. Maximal degree in co-relation 453027. Up to 15245 conditions per place. [2024-01-31 17:06:24,345 INFO L140 encePairwiseOnDemand]: 17/29 looper letters, 1886 selfloop transitions, 486 changer transitions 6/2390 dead transitions. [2024-01-31 17:06:24,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 2390 transitions, 31808 flow [2024-01-31 17:06:24,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2024-01-31 17:06:24,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2024-01-31 17:06:24,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 1129 transitions. [2024-01-31 17:06:24,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5989389920424403 [2024-01-31 17:06:24,348 INFO L175 Difference]: Start difference. First operand has 131 places, 179 transitions, 2310 flow. Second operand 65 states and 1129 transitions. [2024-01-31 17:06:24,349 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 2390 transitions, 31808 flow [2024-01-31 17:06:27,117 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 2390 transitions, 31559 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-01-31 17:06:27,135 INFO L231 Difference]: Finished difference. Result has 227 places, 679 transitions, 12660 flow [2024-01-31 17:06:27,135 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=29, PETRI_DIFFERENCE_MINUEND_FLOW=2281, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=12660, PETRI_PLACES=227, PETRI_TRANSITIONS=679} [2024-01-31 17:06:27,136 INFO L281 CegarLoopForPetriNet]: 29 programPoint places, 198 predicate places. [2024-01-31 17:06:27,136 INFO L495 AbstractCegarLoop]: Abstraction has has 227 places, 679 transitions, 12660 flow [2024-01-31 17:06:27,136 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 12.3) internal successors, (246), 20 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:06:27,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-31 17:06:27,136 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-31 17:06:27,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-01-31 17:06:27,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-01-31 17:06:27,345 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-31 17:06:27,345 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-31 17:06:27,345 INFO L85 PathProgramCache]: Analyzing trace with hash 2031502837, now seen corresponding path program 7 times [2024-01-31 17:06:27,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-31 17:06:27,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479632893] [2024-01-31 17:06:27,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-31 17:06:27,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-31 17:06:27,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:06:27,782 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:06:27,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-31 17:06:27,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479632893] [2024-01-31 17:06:27,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479632893] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-31 17:06:27,783 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726075781] [2024-01-31 17:06:27,783 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-31 17:06:27,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-31 17:06:27,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-31 17:06:27,784 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-31 17:06:27,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-01-31 17:06:27,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-31 17:06:27,892 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2024-01-31 17:06:27,893 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-31 17:06:29,066 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:06:29,066 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-31 17:06:41,167 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-31 17:06:41,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726075781] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-31 17:06:41,167 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-31 17:06:41,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 7, 7] total 22 [2024-01-31 17:06:41,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927364708] [2024-01-31 17:06:41,168 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-31 17:06:41,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-01-31 17:06:41,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-31 17:06:41,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-01-31 17:06:41,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=429, Unknown=2, NotChecked=0, Total=506 [2024-01-31 17:06:41,186 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 29 [2024-01-31 17:06:41,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 227 places, 679 transitions, 12660 flow. Second operand has 23 states, 23 states have (on average 13.521739130434783) internal successors, (311), 23 states have internal predecessors, (311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-31 17:06:41,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-31 17:06:41,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 29 [2024-01-31 17:06:41,187 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-31 17:06:45,396 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:06:49,398 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:07:00,056 WARN L293 SmtUtils]: Spent 8.10s on a formula simplification. DAG size of input: 49 DAG size of output: 48 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 17:07:16,973 WARN L293 SmtUtils]: Spent 8.14s on a formula simplification. DAG size of input: 52 DAG size of output: 51 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 17:07:20,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:07:32,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:07:36,590 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:07:50,276 WARN L293 SmtUtils]: Spent 8.08s on a formula simplification. DAG size of input: 59 DAG size of output: 58 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 17:08:16,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:08:43,419 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:09:09,490 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:09:13,503 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:09:17,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:09:47,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:10:07,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:10:11,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:10:16,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:10:30,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 17:10:34,560 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:10:39,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 17:11:34,839 WARN L293 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 63 DAG size of output: 49 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 17:11:39,900 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:11:51,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:11:55,974 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:12:03,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:12:07,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.97s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:12:11,130 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2024-01-31 17:13:55,765 WARN L293 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 70 DAG size of output: 47 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 17:14:00,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2024-01-31 17:14:57,963 WARN L293 SmtUtils]: Spent 8.11s on a formula simplification. DAG size of input: 65 DAG size of output: 55 (called from [L 391] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-01-31 17:15:02,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Killed by 15