./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/pthread-ext/01b_inc.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/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/AutomizerReach.xml -i ../sv-benchmarks/c/pthread-ext/01b_inc.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f8560a665e9f795d0e42a91570dfb6029ba2a9fa9f17754a8891b62ccadb5cdc --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 10:08:51,425 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 10:08:51,474 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-10 10:08:51,478 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 10:08:51,479 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 10:08:51,493 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 10:08:51,493 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 10:08:51,493 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 10:08:51,494 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 10:08:51,494 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 10:08:51,494 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 10:08:51,494 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 10:08:51,494 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 10:08:51,495 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 10:08:51,495 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 10:08:51,495 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 10:08:51,495 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-10 10:08:51,495 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 10:08:51,496 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 10:08:51,496 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 10:08:51,496 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 10:08:51,497 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-10 10:08:51,498 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 10:08:51,498 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-10 10:08:51,498 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 10:08:51,498 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 10:08:51,498 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-10 10:08:51,498 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 10:08:51,499 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 10:08:51,499 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 10:08:51,499 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 10:08:51,499 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 10:08:51,499 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:08:51,499 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 10:08:51,500 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 10:08:51,500 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-10 10:08:51,500 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 10:08:51,500 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 10:08:51,500 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 10:08:51,501 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 10:08:51,501 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 10:08:51,504 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 10:08:51,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8560a665e9f795d0e42a91570dfb6029ba2a9fa9f17754a8891b62ccadb5cdc [2024-11-10 10:08:51,697 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 10:08:51,717 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 10:08:51,719 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 10:08:51,721 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 10:08:51,721 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 10:08:51,722 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/pthread-ext/01b_inc.i [2024-11-10 10:08:52,933 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 10:08:53,099 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 10:08:53,099 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/01b_inc.i [2024-11-10 10:08:53,117 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6262f02c7/d01e0fe67c384899b5f8f04c8e00db7f/FLAG8927af6ed [2024-11-10 10:08:53,128 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6262f02c7/d01e0fe67c384899b5f8f04c8e00db7f [2024-11-10 10:08:53,130 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 10:08:53,131 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 10:08:53,131 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 10:08:53,131 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 10:08:53,135 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 10:08:53,136 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:08:53" (1/1) ... [2024-11-10 10:08:53,136 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@84a5433 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:53, skipping insertion in model container [2024-11-10 10:08:53,136 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 10:08:53" (1/1) ... [2024-11-10 10:08:53,171 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 10:08:53,453 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/01b_inc.i[30739,30752] [2024-11-10 10:08:53,461 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:08:53,474 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 10:08:53,550 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/pthread-ext/01b_inc.i[30739,30752] [2024-11-10 10:08:53,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 10:08:53,585 INFO L204 MainTranslator]: Completed translation [2024-11-10 10:08:53,586 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:53 WrapperNode [2024-11-10 10:08:53,586 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 10:08:53,587 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 10:08:53,588 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 10:08:53,588 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 10:08:53,593 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:53" (1/1) ... [2024-11-10 10:08:53,605 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:53" (1/1) ... [2024-11-10 10:08:53,620 INFO L138 Inliner]: procedures = 163, calls = 20, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26 [2024-11-10 10:08:53,620 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 10:08:53,621 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 10:08:53,621 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 10:08:53,621 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 10:08:53,628 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:53" (1/1) ... [2024-11-10 10:08:53,628 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:53" (1/1) ... [2024-11-10 10:08:53,630 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:53" (1/1) ... [2024-11-10 10:08:53,645 INFO L175 MemorySlicer]: Split 7 memory accesses to 2 slices as follows [2, 5]. 71 percent of accesses are in the largest equivalence class. The 7 initializations are split as follows [2, 5]. The 0 writes are split as follows [0, 0]. [2024-11-10 10:08:53,646 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:53" (1/1) ... [2024-11-10 10:08:53,646 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:53" (1/1) ... [2024-11-10 10:08:53,651 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:53" (1/1) ... [2024-11-10 10:08:53,652 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:53" (1/1) ... [2024-11-10 10:08:53,652 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:53" (1/1) ... [2024-11-10 10:08:53,653 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:53" (1/1) ... [2024-11-10 10:08:53,657 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 10:08:53,658 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 10:08:53,658 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 10:08:53,658 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 10:08:53,658 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:53" (1/1) ... [2024-11-10 10:08:53,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 10:08:53,675 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 10:08:53,688 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) [2024-11-10 10:08:53,690 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 [2024-11-10 10:08:53,723 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2024-11-10 10:08:53,723 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2024-11-10 10:08:53,723 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-10 10:08:53,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-10 10:08:53,724 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 10:08:53,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 10:08:53,724 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 10:08:53,724 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-10 10:08:53,724 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-10 10:08:53,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 10:08:53,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 10:08:53,725 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-10 10:08:53,822 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 10:08:53,824 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 10:08:53,922 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-10 10:08:53,923 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 10:08:54,009 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 10:08:54,010 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 10:08:54,010 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:08:54 BoogieIcfgContainer [2024-11-10 10:08:54,012 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 10:08:54,013 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 10:08:54,014 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 10:08:54,016 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 10:08:54,017 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 10:08:53" (1/3) ... [2024-11-10 10:08:54,017 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bee8b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:08:54, skipping insertion in model container [2024-11-10 10:08:54,018 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 10:08:53" (2/3) ... [2024-11-10 10:08:54,019 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bee8b9b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 10:08:54, skipping insertion in model container [2024-11-10 10:08:54,019 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 10:08:54" (3/3) ... [2024-11-10 10:08:54,020 INFO L112 eAbstractionObserver]: Analyzing ICFG 01b_inc.i [2024-11-10 10:08:54,032 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 10:08:54,033 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-10 10:08:54,033 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-10 10:08:54,063 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:08:54,089 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 24 places, 23 transitions, 50 flow [2024-11-10 10:08:54,112 INFO L124 PetriNetUnfolderBase]: 3/28 cut-off events. [2024-11-10 10:08:54,113 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:08:54,114 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 28 events. 3/28 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 32 event pairs, 0 based on Foata normal form. 0/22 useless extension candidates. Maximal degree in co-relation 20. Up to 4 conditions per place. [2024-11-10 10:08:54,115 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 23 transitions, 50 flow [2024-11-10 10:08:54,117 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 23 transitions, 50 flow [2024-11-10 10:08:54,128 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:08:54,135 INFO L333 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, 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;@c64aacf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:08:54,135 INFO L334 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-11-10 10:08:54,144 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:08:54,144 INFO L124 PetriNetUnfolderBase]: 2/18 cut-off events. [2024-11-10 10:08:54,144 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-10 10:08:54,145 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:54,145 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1] [2024-11-10 10:08:54,145 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-10 10:08:54,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:54,152 INFO L85 PathProgramCache]: Analyzing trace with hash -1711362360, now seen corresponding path program 1 times [2024-11-10 10:08:54,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:54,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506560660] [2024-11-10 10:08:54,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:54,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:08:54,251 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:08:54,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:08:54,283 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:08:54,284 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:08:54,285 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2024-11-10 10:08:54,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2024-11-10 10:08:54,287 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2024-11-10 10:08:54,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 10:08:54,288 INFO L407 BasicCegarLoop]: Path program histogram: [1] [2024-11-10 10:08:54,293 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:08:54,293 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-10 10:08:54,319 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:08:54,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 40 places, 38 transitions, 86 flow [2024-11-10 10:08:54,335 INFO L124 PetriNetUnfolderBase]: 5/49 cut-off events. [2024-11-10 10:08:54,336 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 10:08:54,338 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57 conditions, 49 events. 5/49 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 104 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 34. Up to 6 conditions per place. [2024-11-10 10:08:54,338 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 38 transitions, 86 flow [2024-11-10 10:08:54,339 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 38 transitions, 86 flow [2024-11-10 10:08:54,341 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:08:54,342 INFO L333 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, 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;@c64aacf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:08:54,342 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-10 10:08:54,350 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:08:54,350 INFO L124 PetriNetUnfolderBase]: 3/34 cut-off events. [2024-11-10 10:08:54,350 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-10 10:08:54,350 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:54,350 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:08:54,350 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-10 10:08:54,351 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:54,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1074201793, now seen corresponding path program 1 times [2024-11-10 10:08:54,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:54,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937549346] [2024-11-10 10:08:54,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:54,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:54,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:08:54,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:08:54,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937549346] [2024-11-10 10:08:54,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937549346] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:08:54,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:08:54,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:08:54,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201347196] [2024-11-10 10:08:54,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:08:54,654 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:08:54,658 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:08:54,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:08:54,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:08:54,688 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 10 out of 38 [2024-11-10 10:08:54,690 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 38 transitions, 86 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:54,690 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:08:54,690 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 10 of 38 [2024-11-10 10:08:54,691 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:08:54,959 INFO L124 PetriNetUnfolderBase]: 470/1061 cut-off events. [2024-11-10 10:08:54,959 INFO L125 PetriNetUnfolderBase]: For 20/20 co-relation queries the response was YES. [2024-11-10 10:08:54,963 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1920 conditions, 1061 events. 470/1061 cut-off events. For 20/20 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 6779 event pairs, 102 based on Foata normal form. 121/1080 useless extension candidates. Maximal degree in co-relation 1794. Up to 284 conditions per place. [2024-11-10 10:08:54,969 INFO L140 encePairwiseOnDemand]: 28/38 looper letters, 50 selfloop transitions, 9 changer transitions 0/69 dead transitions. [2024-11-10 10:08:54,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 69 transitions, 276 flow [2024-11-10 10:08:54,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:08:54,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:08:54,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 133 transitions. [2024-11-10 10:08:54,979 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-10 10:08:54,980 INFO L175 Difference]: Start difference. First operand has 40 places, 38 transitions, 86 flow. Second operand 6 states and 133 transitions. [2024-11-10 10:08:54,981 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 69 transitions, 276 flow [2024-11-10 10:08:54,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 69 transitions, 276 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-10 10:08:54,989 INFO L231 Difference]: Finished difference. Result has 47 places, 41 transitions, 136 flow [2024-11-10 10:08:54,990 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=38, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=136, PETRI_PLACES=47, PETRI_TRANSITIONS=41} [2024-11-10 10:08:54,992 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2024-11-10 10:08:54,993 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 41 transitions, 136 flow [2024-11-10 10:08:54,993 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:54,993 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:54,993 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1] [2024-11-10 10:08:54,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 10:08:54,993 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-10 10:08:54,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:54,994 INFO L85 PathProgramCache]: Analyzing trace with hash 852151825, now seen corresponding path program 1 times [2024-11-10 10:08:54,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:54,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417948882] [2024-11-10 10:08:54,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:54,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:08:55,013 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:08:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:08:55,022 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:08:55,022 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:08:55,023 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-10 10:08:55,024 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-10 10:08:55,024 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-10 10:08:55,024 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-10 10:08:55,024 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-10 10:08:55,024 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 10:08:55,025 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:08:55,025 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-10 10:08:55,045 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:08:55,051 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 56 places, 53 transitions, 124 flow [2024-11-10 10:08:55,055 INFO L124 PetriNetUnfolderBase]: 7/70 cut-off events. [2024-11-10 10:08:55,055 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2024-11-10 10:08:55,055 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83 conditions, 70 events. 7/70 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 173 event pairs, 0 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 56. Up to 8 conditions per place. [2024-11-10 10:08:55,056 INFO L82 GeneralOperation]: Start removeDead. Operand has 56 places, 53 transitions, 124 flow [2024-11-10 10:08:55,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 56 places, 53 transitions, 124 flow [2024-11-10 10:08:55,057 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:08:55,057 INFO L333 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, 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;@c64aacf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:08:55,057 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-10 10:08:55,060 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:08:55,060 INFO L124 PetriNetUnfolderBase]: 3/37 cut-off events. [2024-11-10 10:08:55,060 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:08:55,060 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:55,060 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:08:55,061 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:08:55,061 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:55,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1593040141, now seen corresponding path program 1 times [2024-11-10 10:08:55,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:55,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329091491] [2024-11-10 10:08:55,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:55,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:55,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:55,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:08:55,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:08:55,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329091491] [2024-11-10 10:08:55,192 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329091491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:08:55,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:08:55,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:08:55,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514315804] [2024-11-10 10:08:55,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:08:55,193 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:08:55,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:08:55,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:08:55,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:08:55,202 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 14 out of 53 [2024-11-10 10:08:55,203 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 53 transitions, 124 flow. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:55,203 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:08:55,203 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 14 of 53 [2024-11-10 10:08:55,203 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:08:56,488 INFO L124 PetriNetUnfolderBase]: 11367/19144 cut-off events. [2024-11-10 10:08:56,488 INFO L125 PetriNetUnfolderBase]: For 706/706 co-relation queries the response was YES. [2024-11-10 10:08:56,522 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35889 conditions, 19144 events. 11367/19144 cut-off events. For 706/706 co-relation queries the response was YES. Maximal size of possible extension queue 1146. Compared 156413 event pairs, 3378 based on Foata normal form. 1700/18246 useless extension candidates. Maximal degree in co-relation 27175. Up to 7422 conditions per place. [2024-11-10 10:08:56,616 INFO L140 encePairwiseOnDemand]: 41/53 looper letters, 104 selfloop transitions, 12 changer transitions 0/130 dead transitions. [2024-11-10 10:08:56,616 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 130 transitions, 548 flow [2024-11-10 10:08:56,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:08:56,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:08:56,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 216 transitions. [2024-11-10 10:08:56,620 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6792452830188679 [2024-11-10 10:08:56,620 INFO L175 Difference]: Start difference. First operand has 56 places, 53 transitions, 124 flow. Second operand 6 states and 216 transitions. [2024-11-10 10:08:56,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 130 transitions, 548 flow [2024-11-10 10:08:56,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 130 transitions, 538 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-10 10:08:56,626 INFO L231 Difference]: Finished difference. Result has 63 places, 62 transitions, 207 flow [2024-11-10 10:08:56,626 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=53, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=207, PETRI_PLACES=63, PETRI_TRANSITIONS=62} [2024-11-10 10:08:56,627 INFO L277 CegarLoopForPetriNet]: 56 programPoint places, 7 predicate places. [2024-11-10 10:08:56,627 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 62 transitions, 207 flow [2024-11-10 10:08:56,627 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 5 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:56,628 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:56,628 INFO L204 CegarLoopForPetriNet]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1] [2024-11-10 10:08:56,628 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-10 10:08:56,628 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-10 10:08:56,629 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:56,629 INFO L85 PathProgramCache]: Analyzing trace with hash 850064759, now seen corresponding path program 1 times [2024-11-10 10:08:56,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:56,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255988393] [2024-11-10 10:08:56,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:56,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:08:56,641 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-10 10:08:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-10 10:08:56,648 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-10 10:08:56,648 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-10 10:08:56,648 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-10 10:08:56,648 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-10 10:08:56,648 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-10 10:08:56,648 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-10 10:08:56,649 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-10 10:08:56,649 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-10 10:08:56,649 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1] [2024-11-10 10:08:56,650 WARN L244 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-10 10:08:56,650 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2024-11-10 10:08:56,669 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-11-10 10:08:56,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 68 transitions, 164 flow [2024-11-10 10:08:56,680 INFO L124 PetriNetUnfolderBase]: 9/91 cut-off events. [2024-11-10 10:08:56,681 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2024-11-10 10:08:56,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 91 events. 9/91 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 239 event pairs, 0 based on Foata normal form. 0/73 useless extension candidates. Maximal degree in co-relation 82. Up to 10 conditions per place. [2024-11-10 10:08:56,682 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 68 transitions, 164 flow [2024-11-10 10:08:56,683 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 68 transitions, 164 flow [2024-11-10 10:08:56,683 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 10:08:56,685 INFO L333 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, 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;@c64aacf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 10:08:56,685 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-10 10:08:56,687 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-10 10:08:56,687 INFO L124 PetriNetUnfolderBase]: 3/34 cut-off events. [2024-11-10 10:08:56,688 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-10 10:08:56,688 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:08:56,688 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:08:56,688 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-10 10:08:56,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:08:56,688 INFO L85 PathProgramCache]: Analyzing trace with hash 549955867, now seen corresponding path program 1 times [2024-11-10 10:08:56,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:08:56,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142958920] [2024-11-10 10:08:56,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:08:56,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:08:56,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:08:56,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 10:08:56,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:08:56,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142958920] [2024-11-10 10:08:56,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142958920] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:08:56,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:08:56,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:08:56,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519044768] [2024-11-10 10:08:56,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:08:56,802 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:08:56,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:08:56,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:08:56,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:08:56,811 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 68 [2024-11-10 10:08:56,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 68 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:08:56,812 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:08:56,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 68 [2024-11-10 10:08:56,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-10 10:09:12,726 INFO L124 PetriNetUnfolderBase]: 207509/303004 cut-off events. [2024-11-10 10:09:12,726 INFO L125 PetriNetUnfolderBase]: For 16564/16564 co-relation queries the response was YES. [2024-11-10 10:09:13,465 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579410 conditions, 303004 events. 207509/303004 cut-off events. For 16564/16564 co-relation queries the response was YES. Maximal size of possible extension queue 12217. Compared 2707659 event pairs, 70548 based on Foata normal form. 21757/278714 useless extension candidates. Maximal degree in co-relation 131739. Up to 133343 conditions per place. [2024-11-10 10:09:14,994 INFO L140 encePairwiseOnDemand]: 54/68 looper letters, 144 selfloop transitions, 15 changer transitions 0/177 dead transitions. [2024-11-10 10:09:14,994 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 177 transitions, 774 flow [2024-11-10 10:09:14,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 10:09:14,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-10 10:09:14,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 285 transitions. [2024-11-10 10:09:15,000 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6985294117647058 [2024-11-10 10:09:15,001 INFO L175 Difference]: Start difference. First operand has 72 places, 68 transitions, 164 flow. Second operand 6 states and 285 transitions. [2024-11-10 10:09:15,003 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 177 transitions, 774 flow [2024-11-10 10:09:15,022 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 177 transitions, 744 flow, removed 15 selfloop flow, removed 0 redundant places. [2024-11-10 10:09:15,025 INFO L231 Difference]: Finished difference. Result has 79 places, 81 transitions, 270 flow [2024-11-10 10:09:15,025 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=68, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=270, PETRI_PLACES=79, PETRI_TRANSITIONS=81} [2024-11-10 10:09:15,026 INFO L277 CegarLoopForPetriNet]: 72 programPoint places, 7 predicate places. [2024-11-10 10:09:15,027 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 81 transitions, 270 flow [2024-11-10 10:09:15,027 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:09:15,027 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-10 10:09:15,027 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 10:09:15,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-10 10:09:15,030 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-10 10:09:15,030 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 10:09:15,030 INFO L85 PathProgramCache]: Analyzing trace with hash 1515831588, now seen corresponding path program 1 times [2024-11-10 10:09:15,030 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 10:09:15,031 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872071583] [2024-11-10 10:09:15,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 10:09:15,031 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 10:09:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 10:09:15,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-10 10:09:15,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 10:09:15,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872071583] [2024-11-10 10:09:15,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872071583] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 10:09:15,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 10:09:15,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 10:09:15,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202383270] [2024-11-10 10:09:15,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 10:09:15,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-10 10:09:15,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 10:09:15,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-10 10:09:15,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-10 10:09:15,154 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 68 [2024-11-10 10:09:15,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 81 transitions, 270 flow. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 5 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 10:09:15,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-10 10:09:15,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 68 [2024-11-10 10:09:15,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand