/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 09:43:45,583 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 09:43:45,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 09:43:45,603 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 09:43:45,603 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 09:43:45,604 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 09:43:45,604 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 09:43:45,606 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 09:43:45,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 09:43:45,607 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 09:43:45,608 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 09:43:45,608 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 09:43:45,609 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 09:43:45,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 09:43:45,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 09:43:45,611 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 09:43:45,611 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 09:43:45,612 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 09:43:45,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 09:43:45,615 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 09:43:45,616 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 09:43:45,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 09:43:45,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 09:43:45,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 09:43:45,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-28 09:43:45,626 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 09:43:45,626 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 09:43:45,627 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 09:43:45,628 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-28 09:43:45,640 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 09:43:45,641 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 09:43:45,641 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 09:43:45,641 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 09:43:45,642 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 09:43:45,642 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 09:43:45,642 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 09:43:45,642 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 09:43:45,642 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 09:43:45,642 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 09:43:45,642 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 09:43:45,642 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 09:43:45,643 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 09:43:45,643 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 09:43:45,643 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 09:43:45,643 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 09:43:45,643 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 09:43:45,643 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 09:43:45,643 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 09:43:45,643 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 09:43:45,644 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 09:43:45,644 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 09:43:45,644 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 09:43:45,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:43:45,644 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 09:43:45,644 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 09:43:45,644 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 09:43:45,644 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 09:43:45,644 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 09:43:45,645 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 09:43:45,645 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 09:43:45,645 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 09:43:45,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 09:43:45,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 09:43:45,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 09:43:45,839 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 09:43:45,840 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 09:43:45,842 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2023-01-28 09:43:46,804 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 09:43:46,975 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 09:43:46,975 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-3.wvr.c [2023-01-28 09:43:46,981 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf6c3e683/2d43f96a1c61433cbcc9b367b108bad8/FLAG2ff962cf1 [2023-01-28 09:43:46,996 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cf6c3e683/2d43f96a1c61433cbcc9b367b108bad8 [2023-01-28 09:43:46,997 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 09:43:46,999 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 09:43:47,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 09:43:47,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 09:43:47,003 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 09:43:47,004 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:43:46" (1/1) ... [2023-01-28 09:43:47,004 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e1d5405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:47, skipping insertion in model container [2023-01-28 09:43:47,005 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:43:46" (1/1) ... [2023-01-28 09:43:47,009 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 09:43:47,024 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 09:43:47,160 WARN L247 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-3.wvr.c[2410,2423] [2023-01-28 09:43:47,162 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:43:47,168 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 09:43:47,184 WARN L247 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-3.wvr.c[2410,2423] [2023-01-28 09:43:47,188 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:43:47,193 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:43:47,193 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:43:47,198 INFO L208 MainTranslator]: Completed translation [2023-01-28 09:43:47,198 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:47 WrapperNode [2023-01-28 09:43:47,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 09:43:47,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 09:43:47,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 09:43:47,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 09:43:47,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:47" (1/1) ... [2023-01-28 09:43:47,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:47" (1/1) ... [2023-01-28 09:43:47,223 INFO L138 Inliner]: procedures = 21, calls = 27, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 53 [2023-01-28 09:43:47,223 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 09:43:47,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 09:43:47,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 09:43:47,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 09:43:47,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:47" (1/1) ... [2023-01-28 09:43:47,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:47" (1/1) ... [2023-01-28 09:43:47,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:47" (1/1) ... [2023-01-28 09:43:47,231 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:47" (1/1) ... [2023-01-28 09:43:47,234 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:47" (1/1) ... [2023-01-28 09:43:47,236 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:47" (1/1) ... [2023-01-28 09:43:47,236 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:47" (1/1) ... [2023-01-28 09:43:47,237 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:47" (1/1) ... [2023-01-28 09:43:47,238 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 09:43:47,239 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 09:43:47,239 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 09:43:47,239 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 09:43:47,239 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:47" (1/1) ... [2023-01-28 09:43:47,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:43:47,261 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:43:47,270 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-28 09:43:47,272 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-28 09:43:47,297 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 09:43:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 09:43:47,298 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 09:43:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 09:43:47,298 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 09:43:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 09:43:47,298 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 09:43:47,299 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 09:43:47,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 09:43:47,299 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 09:43:47,299 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 09:43:47,299 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 09:43:47,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 09:43:47,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 09:43:47,301 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 09:43:47,408 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 09:43:47,409 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 09:43:47,579 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 09:43:47,595 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 09:43:47,595 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-28 09:43:47,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:43:47 BoogieIcfgContainer [2023-01-28 09:43:47,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 09:43:47,601 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 09:43:47,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 09:43:47,603 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 09:43:47,603 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:43:46" (1/3) ... [2023-01-28 09:43:47,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@afc01f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:43:47, skipping insertion in model container [2023-01-28 09:43:47,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:47" (2/3) ... [2023-01-28 09:43:47,604 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@afc01f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:43:47, skipping insertion in model container [2023-01-28 09:43:47,604 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:43:47" (3/3) ... [2023-01-28 09:43:47,605 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3.wvr.c [2023-01-28 09:43:47,616 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 09:43:47,616 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 09:43:47,616 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 09:43:47,666 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 09:43:47,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 88 places, 92 transitions, 200 flow [2023-01-28 09:43:47,758 INFO L130 PetriNetUnfolder]: 11/90 cut-off events. [2023-01-28 09:43:47,759 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:43:47,762 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 90 events. 11/90 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 104 event pairs, 0 based on Foata normal form. 0/78 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2023-01-28 09:43:47,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 88 places, 92 transitions, 200 flow [2023-01-28 09:43:47,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 78 places, 82 transitions, 176 flow [2023-01-28 09:43:47,769 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 09:43:47,778 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 78 places, 82 transitions, 176 flow [2023-01-28 09:43:47,781 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 78 places, 82 transitions, 176 flow [2023-01-28 09:43:47,781 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 82 transitions, 176 flow [2023-01-28 09:43:47,808 INFO L130 PetriNetUnfolder]: 11/82 cut-off events. [2023-01-28 09:43:47,808 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:43:47,809 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91 conditions, 82 events. 11/82 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 101 event pairs, 0 based on Foata normal form. 0/71 useless extension candidates. Maximal degree in co-relation 49. Up to 4 conditions per place. [2023-01-28 09:43:47,810 INFO L119 LiptonReduction]: Number of co-enabled transitions 1188 [2023-01-28 09:43:49,968 INFO L134 LiptonReduction]: Checked pairs total: 1141 [2023-01-28 09:43:49,968 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-01-28 09:43:49,983 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 09:43:49,987 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=LoopsAndPotentialCycles, 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;@20e09869, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 09:43:49,987 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 09:43:49,991 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2023-01-28 09:43:49,991 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:43:49,991 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:49,991 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:49,991 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:43:49,994 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:49,994 INFO L85 PathProgramCache]: Analyzing trace with hash 941425486, now seen corresponding path program 1 times [2023-01-28 09:43:50,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:50,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817996317] [2023-01-28 09:43:50,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:50,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:50,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:50,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:43:50,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:50,235 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817996317] [2023-01-28 09:43:50,236 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817996317] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:43:50,236 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:43:50,236 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 09:43:50,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186220207] [2023-01-28 09:43:50,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:43:50,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:43:50,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:50,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:43:50,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:43:50,257 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-01-28 09:43:50,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:50,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:50,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-01-28 09:43:50,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:50,286 INFO L130 PetriNetUnfolder]: 29/54 cut-off events. [2023-01-28 09:43:50,287 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2023-01-28 09:43:50,287 INFO L83 FinitePrefix]: Finished finitePrefix Result has 123 conditions, 54 events. 29/54 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 88 event pairs, 1 based on Foata normal form. 0/40 useless extension candidates. Maximal degree in co-relation 90. Up to 45 conditions per place. [2023-01-28 09:43:50,288 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 17 selfloop transitions, 2 changer transitions 0/19 dead transitions. [2023-01-28 09:43:50,288 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 19 transitions, 91 flow [2023-01-28 09:43:50,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:43:50,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:43:50,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2023-01-28 09:43:50,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4836223506743738 [2023-01-28 09:43:50,297 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2023-01-28 09:43:50,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2023-01-28 09:43:50,298 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:50,300 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2023-01-28 09:43:50,302 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:50,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:50,305 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:50,306 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 38 flow. Second operand 3 states and 251 transitions. [2023-01-28 09:43:50,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 19 transitions, 91 flow [2023-01-28 09:43:50,308 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 19 transitions, 81 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 09:43:50,308 INFO L231 Difference]: Finished difference. Result has 17 places, 14 transitions, 42 flow [2023-01-28 09:43:50,309 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=42, PETRI_PLACES=17, PETRI_TRANSITIONS=14} [2023-01-28 09:43:50,312 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2023-01-28 09:43:50,312 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 14 transitions, 42 flow [2023-01-28 09:43:50,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 80.66666666666667) internal successors, (242), 3 states have internal predecessors, (242), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:50,312 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:50,312 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:50,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 09:43:50,313 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:43:50,313 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:50,313 INFO L85 PathProgramCache]: Analyzing trace with hash 789177524, now seen corresponding path program 1 times [2023-01-28 09:43:50,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:50,313 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062918845] [2023-01-28 09:43:50,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:50,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:50,427 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:43:50,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:50,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062918845] [2023-01-28 09:43:50,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062918845] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:43:50,428 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:43:50,428 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 09:43:50,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050791114] [2023-01-28 09:43:50,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:43:50,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:43:50,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:50,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:43:50,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:43:50,430 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 173 [2023-01-28 09:43:50,431 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 14 transitions, 42 flow. Second operand has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:50,431 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:50,431 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 173 [2023-01-28 09:43:50,431 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:50,474 INFO L130 PetriNetUnfolder]: 40/73 cut-off events. [2023-01-28 09:43:50,475 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2023-01-28 09:43:50,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 73 events. 40/73 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 139 event pairs, 6 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 112. Up to 49 conditions per place. [2023-01-28 09:43:50,475 INFO L137 encePairwiseOnDemand]: 170/173 looper letters, 19 selfloop transitions, 2 changer transitions 0/21 dead transitions. [2023-01-28 09:43:50,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 21 transitions, 106 flow [2023-01-28 09:43:50,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:43:50,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:43:50,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 251 transitions. [2023-01-28 09:43:50,480 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4836223506743738 [2023-01-28 09:43:50,480 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 251 transitions. [2023-01-28 09:43:50,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 251 transitions. [2023-01-28 09:43:50,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:50,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 251 transitions. [2023-01-28 09:43:50,481 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 83.66666666666667) internal successors, (251), 3 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:50,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:50,486 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 173.0) internal successors, (692), 4 states have internal predecessors, (692), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:50,486 INFO L175 Difference]: Start difference. First operand has 17 places, 14 transitions, 42 flow. Second operand 3 states and 251 transitions. [2023-01-28 09:43:50,486 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 21 transitions, 106 flow [2023-01-28 09:43:50,486 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 18 places, 21 transitions, 103 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:43:50,487 INFO L231 Difference]: Finished difference. Result has 19 places, 15 transitions, 52 flow [2023-01-28 09:43:50,487 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=40, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=52, PETRI_PLACES=19, PETRI_TRANSITIONS=15} [2023-01-28 09:43:50,487 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 1 predicate places. [2023-01-28 09:43:50,487 INFO L495 AbstractCegarLoop]: Abstraction has has 19 places, 15 transitions, 52 flow [2023-01-28 09:43:50,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 81.0) internal successors, (243), 3 states have internal predecessors, (243), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:50,488 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:50,488 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:50,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 09:43:50,488 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:43:50,488 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:50,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1336220021, now seen corresponding path program 1 times [2023-01-28 09:43:50,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:50,489 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166940317] [2023-01-28 09:43:50,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:50,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:50,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:50,770 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:43:50,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:50,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166940317] [2023-01-28 09:43:50,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166940317] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:43:50,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071719480] [2023-01-28 09:43:50,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:50,772 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:50,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:43:50,802 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) [2023-01-28 09:43:50,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 09:43:50,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:50,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 09:43:50,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:43:51,124 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:43:51,124 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:43:51,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:43:51,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071719480] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:43:51,433 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:43:51,433 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 4, 4] total 7 [2023-01-28 09:43:51,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074435147] [2023-01-28 09:43:51,434 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:43:51,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:43:51,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:51,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:43:51,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:43:51,437 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 173 [2023-01-28 09:43:51,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 52 flow. Second operand has 8 states, 8 states have (on average 68.5) internal successors, (548), 8 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:51,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:51,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 173 [2023-01-28 09:43:51,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:51,530 INFO L130 PetriNetUnfolder]: 61/110 cut-off events. [2023-01-28 09:43:51,530 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2023-01-28 09:43:51,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 313 conditions, 110 events. 61/110 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 253 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 84. Up to 45 conditions per place. [2023-01-28 09:43:51,533 INFO L137 encePairwiseOnDemand]: 168/173 looper letters, 36 selfloop transitions, 11 changer transitions 0/47 dead transitions. [2023-01-28 09:43:51,533 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 47 transitions, 245 flow [2023-01-28 09:43:51,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 09:43:51,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 09:43:51,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 566 transitions. [2023-01-28 09:43:51,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40895953757225434 [2023-01-28 09:43:51,537 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 566 transitions. [2023-01-28 09:43:51,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 566 transitions. [2023-01-28 09:43:51,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:51,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 566 transitions. [2023-01-28 09:43:51,539 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 70.75) internal successors, (566), 8 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:51,542 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:51,543 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 173.0) internal successors, (1557), 9 states have internal predecessors, (1557), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:51,543 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 52 flow. Second operand 8 states and 566 transitions. [2023-01-28 09:43:51,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 47 transitions, 245 flow [2023-01-28 09:43:51,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 47 transitions, 242 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:43:51,545 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 125 flow [2023-01-28 09:43:51,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=125, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-01-28 09:43:51,546 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 10 predicate places. [2023-01-28 09:43:51,546 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 125 flow [2023-01-28 09:43:51,546 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 68.5) internal successors, (548), 8 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:51,546 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:51,546 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:51,554 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-28 09:43:51,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:51,755 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:43:51,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:51,755 INFO L85 PathProgramCache]: Analyzing trace with hash 728758898, now seen corresponding path program 2 times [2023-01-28 09:43:51,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:51,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651701312] [2023-01-28 09:43:51,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:51,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:51,889 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:43:51,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:51,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651701312] [2023-01-28 09:43:51,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651701312] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:43:51,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389015608] [2023-01-28 09:43:51,890 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 09:43:51,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:51,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:43:51,892 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) [2023-01-28 09:43:51,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 09:43:51,944 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 09:43:51,945 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:43:51,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 09:43:51,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:43:51,983 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:43:51,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:43:52,322 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:43:52,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389015608] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:43:52,326 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:43:52,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 6] total 10 [2023-01-28 09:43:52,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117040821] [2023-01-28 09:43:52,326 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:43:52,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-28 09:43:52,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:52,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-28 09:43:52,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-01-28 09:43:52,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 58 out of 173 [2023-01-28 09:43:52,329 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 125 flow. Second operand has 11 states, 11 states have (on average 60.90909090909091) internal successors, (670), 11 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:52,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:52,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 58 of 173 [2023-01-28 09:43:52,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:52,518 INFO L130 PetriNetUnfolder]: 91/170 cut-off events. [2023-01-28 09:43:52,518 INFO L131 PetriNetUnfolder]: For 190/190 co-relation queries the response was YES. [2023-01-28 09:43:52,519 INFO L83 FinitePrefix]: Finished finitePrefix Result has 598 conditions, 170 events. 91/170 cut-off events. For 190/190 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 483 event pairs, 2 based on Foata normal form. 16/176 useless extension candidates. Maximal degree in co-relation 257. Up to 67 conditions per place. [2023-01-28 09:43:52,519 INFO L137 encePairwiseOnDemand]: 168/173 looper letters, 41 selfloop transitions, 26 changer transitions 0/67 dead transitions. [2023-01-28 09:43:52,519 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 67 transitions, 436 flow [2023-01-28 09:43:52,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-01-28 09:43:52,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-01-28 09:43:52,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 820 transitions. [2023-01-28 09:43:52,522 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36460649177412185 [2023-01-28 09:43:52,522 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 820 transitions. [2023-01-28 09:43:52,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 820 transitions. [2023-01-28 09:43:52,522 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:52,522 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 820 transitions. [2023-01-28 09:43:52,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 63.07692307692308) internal successors, (820), 13 states have internal predecessors, (820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:52,526 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 173.0) internal successors, (2422), 14 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:52,527 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 173.0) internal successors, (2422), 14 states have internal predecessors, (2422), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:52,527 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 125 flow. Second operand 13 states and 820 transitions. [2023-01-28 09:43:52,527 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 67 transitions, 436 flow [2023-01-28 09:43:52,528 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 67 transitions, 382 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-01-28 09:43:52,529 INFO L231 Difference]: Finished difference. Result has 44 places, 39 transitions, 285 flow [2023-01-28 09:43:52,529 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=285, PETRI_PLACES=44, PETRI_TRANSITIONS=39} [2023-01-28 09:43:52,530 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 26 predicate places. [2023-01-28 09:43:52,530 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 39 transitions, 285 flow [2023-01-28 09:43:52,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 60.90909090909091) internal successors, (670), 11 states have internal predecessors, (670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:52,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:52,530 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:52,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-01-28 09:43:52,735 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,SelfDestructingSolverStorable3 [2023-01-28 09:43:52,736 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:43:52,736 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:52,736 INFO L85 PathProgramCache]: Analyzing trace with hash 793394256, now seen corresponding path program 3 times [2023-01-28 09:43:52,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:52,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544805663] [2023-01-28 09:43:52,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:52,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:52,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:53,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:43:53,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:53,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544805663] [2023-01-28 09:43:53,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544805663] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:43:53,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [873299008] [2023-01-28 09:43:53,104 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 09:43:53,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:53,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:43:53,105 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) [2023-01-28 09:43:53,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 09:43:53,173 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 09:43:53,173 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:43:53,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-28 09:43:53,177 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:43:53,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:43:53,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:43:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:43:53,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [873299008] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:43:53,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:43:53,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 5] total 14 [2023-01-28 09:43:53,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [334952716] [2023-01-28 09:43:53,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:43:53,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 09:43:53,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:53,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 09:43:53,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2023-01-28 09:43:53,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 173 [2023-01-28 09:43:53,808 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 39 transitions, 285 flow. Second operand has 16 states, 16 states have (on average 56.3125) internal successors, (901), 16 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:53,808 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:53,808 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 173 [2023-01-28 09:43:53,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:54,342 INFO L130 PetriNetUnfolder]: 194/365 cut-off events. [2023-01-28 09:43:54,343 INFO L131 PetriNetUnfolder]: For 838/838 co-relation queries the response was YES. [2023-01-28 09:43:54,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1591 conditions, 365 events. 194/365 cut-off events. For 838/838 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1432 event pairs, 4 based on Foata normal form. 10/375 useless extension candidates. Maximal degree in co-relation 1022. Up to 103 conditions per place. [2023-01-28 09:43:54,345 INFO L137 encePairwiseOnDemand]: 167/173 looper letters, 50 selfloop transitions, 54 changer transitions 30/134 dead transitions. [2023-01-28 09:43:54,345 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 134 transitions, 1100 flow [2023-01-28 09:43:54,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-01-28 09:43:54,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-01-28 09:43:54,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1181 transitions. [2023-01-28 09:43:54,348 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34132947976878614 [2023-01-28 09:43:54,348 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 1181 transitions. [2023-01-28 09:43:54,348 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 1181 transitions. [2023-01-28 09:43:54,348 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:54,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 1181 transitions. [2023-01-28 09:43:54,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 59.05) internal successors, (1181), 20 states have internal predecessors, (1181), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:54,353 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 173.0) internal successors, (3633), 21 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:54,354 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 173.0) internal successors, (3633), 21 states have internal predecessors, (3633), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:54,354 INFO L175 Difference]: Start difference. First operand has 44 places, 39 transitions, 285 flow. Second operand 20 states and 1181 transitions. [2023-01-28 09:43:54,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 134 transitions, 1100 flow [2023-01-28 09:43:54,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 134 transitions, 1000 flow, removed 34 selfloop flow, removed 6 redundant places. [2023-01-28 09:43:54,373 INFO L231 Difference]: Finished difference. Result has 63 places, 70 transitions, 670 flow [2023-01-28 09:43:54,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=670, PETRI_PLACES=63, PETRI_TRANSITIONS=70} [2023-01-28 09:43:54,374 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 45 predicate places. [2023-01-28 09:43:54,374 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 70 transitions, 670 flow [2023-01-28 09:43:54,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 56.3125) internal successors, (901), 16 states have internal predecessors, (901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:54,375 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:54,375 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:54,382 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 09:43:54,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:54,576 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:43:54,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:54,576 INFO L85 PathProgramCache]: Analyzing trace with hash -2120211330, now seen corresponding path program 4 times [2023-01-28 09:43:54,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:54,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233011300] [2023-01-28 09:43:54,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:54,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:54,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:55,320 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:43:55,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:55,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233011300] [2023-01-28 09:43:55,321 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233011300] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:43:55,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1859081335] [2023-01-28 09:43:55,321 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 09:43:55,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:55,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:43:55,324 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) [2023-01-28 09:43:55,358 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 09:43:55,410 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 09:43:55,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:43:55,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 18 conjunts are in the unsatisfiable core [2023-01-28 09:43:55,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:43:55,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:43:55,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:43:56,059 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:43:56,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1859081335] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:43:56,059 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:43:56,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 16 [2023-01-28 09:43:56,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309300315] [2023-01-28 09:43:56,060 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:43:56,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 09:43:56,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:56,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 09:43:56,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2023-01-28 09:43:56,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 173 [2023-01-28 09:43:56,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 70 transitions, 670 flow. Second operand has 18 states, 18 states have (on average 56.166666666666664) internal successors, (1011), 18 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:56,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:56,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 173 [2023-01-28 09:43:56,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:56,325 INFO L130 PetriNetUnfolder]: 130/236 cut-off events. [2023-01-28 09:43:56,326 INFO L131 PetriNetUnfolder]: For 761/761 co-relation queries the response was YES. [2023-01-28 09:43:56,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1213 conditions, 236 events. 130/236 cut-off events. For 761/761 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 769 event pairs, 0 based on Foata normal form. 19/255 useless extension candidates. Maximal degree in co-relation 1197. Up to 73 conditions per place. [2023-01-28 09:43:56,327 INFO L137 encePairwiseOnDemand]: 167/173 looper letters, 0 selfloop transitions, 0 changer transitions 86/86 dead transitions. [2023-01-28 09:43:56,327 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 86 transitions, 875 flow [2023-01-28 09:43:56,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 09:43:56,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 09:43:56,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 587 transitions. [2023-01-28 09:43:56,328 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3393063583815029 [2023-01-28 09:43:56,329 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 587 transitions. [2023-01-28 09:43:56,329 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 587 transitions. [2023-01-28 09:43:56,329 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:56,329 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 587 transitions. [2023-01-28 09:43:56,330 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 58.7) internal successors, (587), 10 states have internal predecessors, (587), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:56,331 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 173.0) internal successors, (1903), 11 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:56,332 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 173.0) internal successors, (1903), 11 states have internal predecessors, (1903), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:56,332 INFO L175 Difference]: Start difference. First operand has 63 places, 70 transitions, 670 flow. Second operand 10 states and 587 transitions. [2023-01-28 09:43:56,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 86 transitions, 875 flow [2023-01-28 09:43:56,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 86 transitions, 693 flow, removed 60 selfloop flow, removed 9 redundant places. [2023-01-28 09:43:56,336 INFO L231 Difference]: Finished difference. Result has 55 places, 0 transitions, 0 flow [2023-01-28 09:43:56,336 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=173, PETRI_DIFFERENCE_MINUEND_FLOW=407, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=55, PETRI_TRANSITIONS=0} [2023-01-28 09:43:56,336 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 37 predicate places. [2023-01-28 09:43:56,336 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 0 transitions, 0 flow [2023-01-28 09:43:56,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 56.166666666666664) internal successors, (1011), 18 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-28 09:43:56,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 09:43:56,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 09:43:56,339 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 09:43:56,346 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-01-28 09:43:56,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:56,544 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1] [2023-01-28 09:43:56,546 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 09:43:56,546 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 09:43:56,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 09:43:56 BasicIcfg [2023-01-28 09:43:56,548 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 09:43:56,548 INFO L158 Benchmark]: Toolchain (without parser) took 9549.33ms. Allocated memory was 362.8MB in the beginning and 524.3MB in the end (delta: 161.5MB). Free memory was 332.9MB in the beginning and 246.8MB in the end (delta: 86.2MB). Peak memory consumption was 249.8MB. Max. memory is 16.0GB. [2023-01-28 09:43:56,549 INFO L158 Benchmark]: CDTParser took 0.67ms. Allocated memory is still 255.9MB. Free memory is still 213.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:43:56,549 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.92ms. Allocated memory is still 362.8MB. Free memory was 332.6MB in the beginning and 321.6MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 09:43:56,549 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.28ms. Allocated memory is still 362.8MB. Free memory was 321.6MB in the beginning and 320.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 09:43:56,549 INFO L158 Benchmark]: Boogie Preprocessor took 14.79ms. Allocated memory is still 362.8MB. Free memory was 320.0MB in the beginning and 318.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 09:43:56,549 INFO L158 Benchmark]: RCFGBuilder took 360.63ms. Allocated memory is still 362.8MB. Free memory was 318.8MB in the beginning and 304.9MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-28 09:43:56,550 INFO L158 Benchmark]: TraceAbstraction took 8947.28ms. Allocated memory was 362.8MB in the beginning and 524.3MB in the end (delta: 161.5MB). Free memory was 304.1MB in the beginning and 246.8MB in the end (delta: 57.3MB). Peak memory consumption was 220.5MB. Max. memory is 16.0GB. [2023-01-28 09:43:56,550 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67ms. Allocated memory is still 255.9MB. Free memory is still 213.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 196.92ms. Allocated memory is still 362.8MB. Free memory was 332.6MB in the beginning and 321.6MB in the end (delta: 11.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 24.28ms. Allocated memory is still 362.8MB. Free memory was 321.6MB in the beginning and 320.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.0GB. * Boogie Preprocessor took 14.79ms. Allocated memory is still 362.8MB. Free memory was 320.0MB in the beginning and 318.8MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 360.63ms. Allocated memory is still 362.8MB. Free memory was 318.8MB in the beginning and 304.9MB in the end (delta: 14.0MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 8947.28ms. Allocated memory was 362.8MB in the beginning and 524.3MB in the end (delta: 161.5MB). Free memory was 304.1MB in the beginning and 246.8MB in the end (delta: 57.3MB). Peak memory consumption was 220.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 78 PlacesBefore, 18 PlacesAfterwards, 82 TransitionsBefore, 13 TransitionsAfterwards, 1188 CoEnabledTransitionPairs, 6 FixpointIterations, 29 TrivialSequentialCompositions, 34 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 6 ConcurrentYvCompositions, 9 ChoiceCompositions, 81 TotalNumberOfCompositions, 1141 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1095, independent: 1089, independent conditional: 0, independent unconditional: 1089, dependent: 6, dependent conditional: 0, dependent unconditional: 6, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 617, independent: 614, independent conditional: 0, independent unconditional: 614, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1095, independent: 475, independent conditional: 0, independent unconditional: 475, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 617, unknown conditional: 0, unknown unconditional: 617] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 13, Positive conditional cache size: 0, Positive unconditional cache size: 13, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 101]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 112 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.8s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 261 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 261 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 85 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 706 IncrementalHoareTripleChecker+Invalid, 791 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 85 mSolverCounterUnsat, 0 mSDtfsCounter, 706 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 156 GetRequests, 75 SyntacticMatches, 6 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=670occurred in iteration=5, InterpolantAutomatonStates: 57, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.8s InterpolantComputationTime, 137 NumberOfCodeBlocks, 137 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 180 ConstructedInterpolants, 0 QuantifiedInterpolants, 1809 SizeOfPredicates, 23 NumberOfNonLiveVariables, 453 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 14 InterpolantComputations, 2 PerfectInterpolantSequences, 11/55 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-01-28 09:43:56,564 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...