/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-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 09:43:29,032 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 09:43:29,034 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 09:43:29,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 09:43:29,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 09:43:29,068 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 09:43:29,070 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 09:43:29,072 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 09:43:29,073 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 09:43:29,076 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 09:43:29,078 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 09:43:29,079 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 09:43:29,079 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 09:43:29,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 09:43:29,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 09:43:29,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 09:43:29,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 09:43:29,083 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 09:43:29,084 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 09:43:29,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 09:43:29,089 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 09:43:29,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 09:43:29,091 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 09:43:29,092 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 09:43:29,097 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 09:43:29,098 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 09:43:29,098 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 09:43:29,099 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 09:43:29,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 09:43:29,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 09:43:29,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 09:43:29,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 09:43:29,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 09:43:29,101 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 09:43:29,102 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 09:43:29,102 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 09:43:29,102 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 09:43:29,102 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 09:43:29,102 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 09:43:29,103 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 09:43:29,103 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 09:43:29,104 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 09:43:29,126 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 09:43:29,126 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 09:43:29,127 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 09:43:29,127 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 09:43:29,128 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 09:43:29,128 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 09:43:29,128 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 09:43:29,128 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 09:43:29,128 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 09:43:29,128 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 09:43:29,129 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 09:43:29,129 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 09:43:29,129 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 09:43:29,129 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 09:43:29,129 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 09:43:29,129 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 09:43:29,129 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 09:43:29,129 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 09:43:29,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 09:43:29,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 09:43:29,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 09:43:29,130 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 09:43:29,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 09:43:29,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:43:29,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 09:43:29,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 09:43:29,130 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 09:43:29,130 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 09:43:29,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 09:43:29,130 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 09:43:29,130 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 09:43:29,130 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 09:43:29,281 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 09:43:29,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 09:43:29,309 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 09:43:29,310 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 09:43:29,313 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 09:43:29,313 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2023-01-28 09:43:30,397 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 09:43:30,537 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 09:43:30,537 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2023-01-28 09:43:30,541 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d36e6d8/3e1a80633d9546f2bec558c73cb64ae7/FLAG664ecd1d9 [2023-01-28 09:43:30,550 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22d36e6d8/3e1a80633d9546f2bec558c73cb64ae7 [2023-01-28 09:43:30,552 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 09:43:30,553 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 09:43:30,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 09:43:30,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 09:43:30,556 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 09:43:30,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:43:30" (1/1) ... [2023-01-28 09:43:30,557 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cbcb5ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:30, skipping insertion in model container [2023-01-28 09:43:30,557 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 09:43:30" (1/1) ... [2023-01-28 09:43:30,561 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 09:43:30,571 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 09:43:30,693 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-2.wvr.c[2554,2567] [2023-01-28 09:43:30,695 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:43:30,701 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 09:43:30,715 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-2.wvr.c[2554,2567] [2023-01-28 09:43:30,715 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 09:43:30,720 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:43:30,720 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 09:43:30,724 INFO L208 MainTranslator]: Completed translation [2023-01-28 09:43:30,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:30 WrapperNode [2023-01-28 09:43:30,725 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 09:43:30,726 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 09:43:30,726 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 09:43:30,726 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 09:43:30,730 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:30" (1/1) ... [2023-01-28 09:43:30,735 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:30" (1/1) ... [2023-01-28 09:43:30,746 INFO L138 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 72 [2023-01-28 09:43:30,746 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 09:43:30,747 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 09:43:30,747 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 09:43:30,747 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 09:43:30,757 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:30" (1/1) ... [2023-01-28 09:43:30,758 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:30" (1/1) ... [2023-01-28 09:43:30,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:30" (1/1) ... [2023-01-28 09:43:30,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:30" (1/1) ... [2023-01-28 09:43:30,762 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:30" (1/1) ... [2023-01-28 09:43:30,764 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:30" (1/1) ... [2023-01-28 09:43:30,764 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:30" (1/1) ... [2023-01-28 09:43:30,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:30" (1/1) ... [2023-01-28 09:43:30,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 09:43:30,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 09:43:30,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 09:43:30,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 09:43:30,767 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:30" (1/1) ... [2023-01-28 09:43:30,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 09:43:30,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:43:30,801 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 09:43:30,803 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 09:43:30,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 09:43:30,827 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 09:43:30,827 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 09:43:30,827 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 09:43:30,827 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 09:43:30,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 09:43:30,827 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 09:43:30,827 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 09:43:30,827 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 09:43:30,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 09:43:30,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 09:43:30,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 09:43:30,828 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 09:43:30,828 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 09:43:30,829 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 09:43:30,908 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 09:43:30,910 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 09:43:31,172 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 09:43:31,201 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 09:43:31,201 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-28 09:43:31,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:43:31 BoogieIcfgContainer [2023-01-28 09:43:31,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 09:43:31,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 09:43:31,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 09:43:31,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 09:43:31,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 09:43:30" (1/3) ... [2023-01-28 09:43:31,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11fd9e14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:43:31, skipping insertion in model container [2023-01-28 09:43:31,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 09:43:30" (2/3) ... [2023-01-28 09:43:31,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11fd9e14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 09:43:31, skipping insertion in model container [2023-01-28 09:43:31,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 09:43:31" (3/3) ... [2023-01-28 09:43:31,209 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2023-01-28 09:43:31,219 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 09:43:31,220 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 09:43:31,220 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 09:43:31,269 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-28 09:43:31,295 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 103 transitions, 222 flow [2023-01-28 09:43:31,334 INFO L130 PetriNetUnfolder]: 8/101 cut-off events. [2023-01-28 09:43:31,334 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:43:31,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 110 conditions, 101 events. 8/101 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 67 event pairs, 0 based on Foata normal form. 0/92 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-01-28 09:43:31,340 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 103 transitions, 222 flow [2023-01-28 09:43:31,342 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 93 transitions, 198 flow [2023-01-28 09:43:31,345 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 09:43:31,350 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 92 places, 93 transitions, 198 flow [2023-01-28 09:43:31,352 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 92 places, 93 transitions, 198 flow [2023-01-28 09:43:31,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 92 places, 93 transitions, 198 flow [2023-01-28 09:43:31,371 INFO L130 PetriNetUnfolder]: 8/93 cut-off events. [2023-01-28 09:43:31,372 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:43:31,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 93 events. 8/93 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 66 event pairs, 0 based on Foata normal form. 0/85 useless extension candidates. Maximal degree in co-relation 65. Up to 2 conditions per place. [2023-01-28 09:43:31,373 INFO L119 LiptonReduction]: Number of co-enabled transitions 728 [2023-01-28 09:43:33,240 INFO L134 LiptonReduction]: Checked pairs total: 789 [2023-01-28 09:43:33,240 INFO L136 LiptonReduction]: Total number of compositions: 94 [2023-01-28 09:43:33,250 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 09:43:33,258 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;@7bb70b9b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 09:43:33,258 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 09:43:33,261 INFO L130 PetriNetUnfolder]: 2/12 cut-off events. [2023-01-28 09:43:33,261 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 09:43:33,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:33,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:33,262 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 09:43:33,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:33,265 INFO L85 PathProgramCache]: Analyzing trace with hash 285965286, now seen corresponding path program 1 times [2023-01-28 09:43:33,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:33,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101852804] [2023-01-28 09:43:33,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:33,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:33,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:33,628 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 09:43:33,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:33,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101852804] [2023-01-28 09:43:33,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101852804] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:43:33,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:43:33,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 09:43:33,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1510659656] [2023-01-28 09:43:33,631 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:43:33,636 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 09:43:33,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:33,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 09:43:33,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 09:43:33,658 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 197 [2023-01-28 09:43:33,662 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 09:43:33,662 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:33,662 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 197 [2023-01-28 09:43:33,663 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:33,719 INFO L130 PetriNetUnfolder]: 41/77 cut-off events. [2023-01-28 09:43:33,719 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2023-01-28 09:43:33,720 INFO L83 FinitePrefix]: Finished finitePrefix Result has 174 conditions, 77 events. 41/77 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 163 event pairs, 9 based on Foata normal form. 1/54 useless extension candidates. Maximal degree in co-relation 120. Up to 51 conditions per place. [2023-01-28 09:43:33,722 INFO L137 encePairwiseOnDemand]: 193/197 looper letters, 19 selfloop transitions, 3 changer transitions 1/23 dead transitions. [2023-01-28 09:43:33,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 23 transitions, 113 flow [2023-01-28 09:43:33,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 09:43:33,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 09:43:33,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 282 transitions. [2023-01-28 09:43:33,737 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47715736040609136 [2023-01-28 09:43:33,738 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 282 transitions. [2023-01-28 09:43:33,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 282 transitions. [2023-01-28 09:43:33,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:33,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 282 transitions. [2023-01-28 09:43:33,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 94.0) internal successors, (282), 3 states have internal predecessors, (282), 0 states have call successors, (0), 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 09:43:33,747 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 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 09:43:33,747 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 197.0) internal successors, (788), 4 states have internal predecessors, (788), 0 states have call successors, (0), 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 09:43:33,748 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 38 flow. Second operand 3 states and 282 transitions. [2023-01-28 09:43:33,749 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 23 transitions, 113 flow [2023-01-28 09:43:33,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 23 transitions, 99 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-01-28 09:43:33,751 INFO L231 Difference]: Finished difference. Result has 17 places, 15 transitions, 49 flow [2023-01-28 09:43:33,752 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, 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=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=49, PETRI_PLACES=17, PETRI_TRANSITIONS=15} [2023-01-28 09:43:33,754 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, -1 predicate places. [2023-01-28 09:43:33,754 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 15 transitions, 49 flow [2023-01-28 09:43:33,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 0 states have call successors, (0), 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 09:43:33,755 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:33,755 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:33,755 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 09:43:33,755 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 09:43:33,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:33,756 INFO L85 PathProgramCache]: Analyzing trace with hash 275674925, now seen corresponding path program 1 times [2023-01-28 09:43:33,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:33,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677562520] [2023-01-28 09:43:33,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:33,756 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:33,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:33,913 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:43:33,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:33,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677562520] [2023-01-28 09:43:33,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677562520] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:43:33,914 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:43:33,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:43:33,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [938266284] [2023-01-28 09:43:33,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:43:33,920 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:43:33,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:33,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:43:33,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:43:33,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2023-01-28 09:43:33,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 15 transitions, 49 flow. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 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 09:43:33,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:33,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2023-01-28 09:43:33,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:34,014 INFO L130 PetriNetUnfolder]: 49/99 cut-off events. [2023-01-28 09:43:34,014 INFO L131 PetriNetUnfolder]: For 25/25 co-relation queries the response was YES. [2023-01-28 09:43:34,015 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244 conditions, 99 events. 49/99 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 273 event pairs, 5 based on Foata normal form. 8/107 useless extension candidates. Maximal degree in co-relation 57. Up to 47 conditions per place. [2023-01-28 09:43:34,015 INFO L137 encePairwiseOnDemand]: 192/197 looper letters, 29 selfloop transitions, 7 changer transitions 2/38 dead transitions. [2023-01-28 09:43:34,015 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 38 transitions, 189 flow [2023-01-28 09:43:34,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:43:34,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:43:34,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 421 transitions. [2023-01-28 09:43:34,018 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42741116751269037 [2023-01-28 09:43:34,018 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 421 transitions. [2023-01-28 09:43:34,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 421 transitions. [2023-01-28 09:43:34,019 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:34,019 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 421 transitions. [2023-01-28 09:43:34,021 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 84.2) internal successors, (421), 5 states have internal predecessors, (421), 0 states have call successors, (0), 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 09:43:34,023 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 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 09:43:34,024 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 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 09:43:34,024 INFO L175 Difference]: Start difference. First operand has 17 places, 15 transitions, 49 flow. Second operand 5 states and 421 transitions. [2023-01-28 09:43:34,024 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 38 transitions, 189 flow [2023-01-28 09:43:34,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 38 transitions, 185 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 09:43:34,025 INFO L231 Difference]: Finished difference. Result has 23 places, 21 transitions, 102 flow [2023-01-28 09:43:34,025 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=102, PETRI_PLACES=23, PETRI_TRANSITIONS=21} [2023-01-28 09:43:34,025 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 5 predicate places. [2023-01-28 09:43:34,026 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 21 transitions, 102 flow [2023-01-28 09:43:34,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 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 09:43:34,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:34,026 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:34,026 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 09:43:34,026 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 09:43:34,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:34,028 INFO L85 PathProgramCache]: Analyzing trace with hash -1439336439, now seen corresponding path program 2 times [2023-01-28 09:43:34,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:34,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90972101] [2023-01-28 09:43:34,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:34,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:34,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:34,132 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:43:34,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:34,133 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90972101] [2023-01-28 09:43:34,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90972101] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:43:34,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:43:34,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:43:34,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1727407067] [2023-01-28 09:43:34,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:43:34,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:43:34,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:34,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:43:34,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:43:34,136 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2023-01-28 09:43:34,136 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 21 transitions, 102 flow. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 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 09:43:34,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:34,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2023-01-28 09:43:34,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:34,200 INFO L130 PetriNetUnfolder]: 45/93 cut-off events. [2023-01-28 09:43:34,200 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2023-01-28 09:43:34,202 INFO L83 FinitePrefix]: Finished finitePrefix Result has 310 conditions, 93 events. 45/93 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 228 event pairs, 11 based on Foata normal form. 4/97 useless extension candidates. Maximal degree in co-relation 216. Up to 59 conditions per place. [2023-01-28 09:43:34,203 INFO L137 encePairwiseOnDemand]: 193/197 looper letters, 20 selfloop transitions, 6 changer transitions 6/32 dead transitions. [2023-01-28 09:43:34,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 32 transitions, 207 flow [2023-01-28 09:43:34,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 09:43:34,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 09:43:34,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 336 transitions. [2023-01-28 09:43:34,204 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4263959390862944 [2023-01-28 09:43:34,204 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 336 transitions. [2023-01-28 09:43:34,204 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 336 transitions. [2023-01-28 09:43:34,204 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:34,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 336 transitions. [2023-01-28 09:43:34,205 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 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 09:43:34,206 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 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 09:43:34,206 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 197.0) internal successors, (985), 5 states have internal predecessors, (985), 0 states have call successors, (0), 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 09:43:34,206 INFO L175 Difference]: Start difference. First operand has 23 places, 21 transitions, 102 flow. Second operand 4 states and 336 transitions. [2023-01-28 09:43:34,207 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 32 transitions, 207 flow [2023-01-28 09:43:34,209 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 32 transitions, 207 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 09:43:34,210 INFO L231 Difference]: Finished difference. Result has 27 places, 20 transitions, 119 flow [2023-01-28 09:43:34,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=102, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=119, PETRI_PLACES=27, PETRI_TRANSITIONS=20} [2023-01-28 09:43:34,211 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 9 predicate places. [2023-01-28 09:43:34,213 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 20 transitions, 119 flow [2023-01-28 09:43:34,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 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 09:43:34,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:34,213 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:34,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 09:43:34,214 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 09:43:34,214 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:34,214 INFO L85 PathProgramCache]: Analyzing trace with hash 1223174604, now seen corresponding path program 1 times [2023-01-28 09:43:34,214 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:34,214 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455325586] [2023-01-28 09:43:34,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:34,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:34,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:34,319 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:43:34,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:34,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455325586] [2023-01-28 09:43:34,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1455325586] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:43:34,321 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914400401] [2023-01-28 09:43:34,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:34,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:34,321 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:43:34,323 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 09:43:34,340 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 09:43:34,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:34,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 104 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 09:43:34,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:43:34,572 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:43:34,572 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:43:34,695 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:43:34,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914400401] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:43:34,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:43:34,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-01-28 09:43:34,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598433813] [2023-01-28 09:43:34,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:43:34,697 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-01-28 09:43:34,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:34,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-01-28 09:43:34,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-01-28 09:43:34,698 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 197 [2023-01-28 09:43:34,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 20 transitions, 119 flow. Second operand has 7 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 0 states have call successors, (0), 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 09:43:34,699 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:34,699 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 197 [2023-01-28 09:43:34,699 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:34,798 INFO L130 PetriNetUnfolder]: 67/137 cut-off events. [2023-01-28 09:43:34,798 INFO L131 PetriNetUnfolder]: For 194/194 co-relation queries the response was YES. [2023-01-28 09:43:34,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 519 conditions, 137 events. 67/137 cut-off events. For 194/194 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 400 event pairs, 2 based on Foata normal form. 20/157 useless extension candidates. Maximal degree in co-relation 342. Up to 65 conditions per place. [2023-01-28 09:43:34,800 INFO L137 encePairwiseOnDemand]: 192/197 looper letters, 35 selfloop transitions, 10 changer transitions 4/49 dead transitions. [2023-01-28 09:43:34,800 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 49 transitions, 348 flow [2023-01-28 09:43:34,800 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 09:43:34,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 09:43:34,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 478 transitions. [2023-01-28 09:43:34,801 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40439932318104904 [2023-01-28 09:43:34,802 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 478 transitions. [2023-01-28 09:43:34,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 478 transitions. [2023-01-28 09:43:34,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:34,802 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 478 transitions. [2023-01-28 09:43:34,803 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 79.66666666666667) internal successors, (478), 6 states have internal predecessors, (478), 0 states have call successors, (0), 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 09:43:34,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 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 09:43:34,805 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 197.0) internal successors, (1379), 7 states have internal predecessors, (1379), 0 states have call successors, (0), 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 09:43:34,805 INFO L175 Difference]: Start difference. First operand has 27 places, 20 transitions, 119 flow. Second operand 6 states and 478 transitions. [2023-01-28 09:43:34,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 49 transitions, 348 flow [2023-01-28 09:43:34,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 29 places, 49 transitions, 317 flow, removed 9 selfloop flow, removed 3 redundant places. [2023-01-28 09:43:34,807 INFO L231 Difference]: Finished difference. Result has 32 places, 26 transitions, 182 flow [2023-01-28 09:43:34,807 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=12, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=182, PETRI_PLACES=32, PETRI_TRANSITIONS=26} [2023-01-28 09:43:34,808 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 14 predicate places. [2023-01-28 09:43:34,808 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 26 transitions, 182 flow [2023-01-28 09:43:34,808 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.71428571428571) internal successors, (530), 7 states have internal predecessors, (530), 0 states have call successors, (0), 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 09:43:34,808 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:34,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:34,816 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 09:43:35,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:35,014 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 09:43:35,014 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:35,014 INFO L85 PathProgramCache]: Analyzing trace with hash 2057316734, now seen corresponding path program 2 times [2023-01-28 09:43:35,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:35,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118130977] [2023-01-28 09:43:35,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:35,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:35,115 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:43:35,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:35,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118130977] [2023-01-28 09:43:35,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118130977] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 09:43:35,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 09:43:35,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 09:43:35,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489070652] [2023-01-28 09:43:35,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 09:43:35,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 09:43:35,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:35,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 09:43:35,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 09:43:35,117 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2023-01-28 09:43:35,118 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 182 flow. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 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 09:43:35,118 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:35,118 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2023-01-28 09:43:35,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:35,172 INFO L130 PetriNetUnfolder]: 69/141 cut-off events. [2023-01-28 09:43:35,172 INFO L131 PetriNetUnfolder]: For 348/348 co-relation queries the response was YES. [2023-01-28 09:43:35,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 601 conditions, 141 events. 69/141 cut-off events. For 348/348 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 400 event pairs, 9 based on Foata normal form. 2/143 useless extension candidates. Maximal degree in co-relation 400. Up to 62 conditions per place. [2023-01-28 09:43:35,173 INFO L137 encePairwiseOnDemand]: 192/197 looper letters, 35 selfloop transitions, 8 changer transitions 2/45 dead transitions. [2023-01-28 09:43:35,173 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 377 flow [2023-01-28 09:43:35,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 09:43:35,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 09:43:35,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 417 transitions. [2023-01-28 09:43:35,175 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4233502538071066 [2023-01-28 09:43:35,175 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 417 transitions. [2023-01-28 09:43:35,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 417 transitions. [2023-01-28 09:43:35,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:35,175 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 417 transitions. [2023-01-28 09:43:35,176 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 83.4) internal successors, (417), 5 states have internal predecessors, (417), 0 states have call successors, (0), 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 09:43:35,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 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 09:43:35,177 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 197.0) internal successors, (1182), 6 states have internal predecessors, (1182), 0 states have call successors, (0), 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 09:43:35,177 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 182 flow. Second operand 5 states and 417 transitions. [2023-01-28 09:43:35,177 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 377 flow [2023-01-28 09:43:35,179 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 45 transitions, 356 flow, removed 9 selfloop flow, removed 1 redundant places. [2023-01-28 09:43:35,180 INFO L231 Difference]: Finished difference. Result has 37 places, 29 transitions, 217 flow [2023-01-28 09:43:35,180 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=217, PETRI_PLACES=37, PETRI_TRANSITIONS=29} [2023-01-28 09:43:35,180 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 19 predicate places. [2023-01-28 09:43:35,180 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 29 transitions, 217 flow [2023-01-28 09:43:35,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 4 states have internal predecessors, (320), 0 states have call successors, (0), 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 09:43:35,181 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:35,181 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:35,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 09:43:35,181 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 09:43:35,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:35,181 INFO L85 PathProgramCache]: Analyzing trace with hash 18175184, now seen corresponding path program 1 times [2023-01-28 09:43:35,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:35,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293075752] [2023-01-28 09:43:35,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:35,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:35,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:35,418 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:43:35,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:35,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293075752] [2023-01-28 09:43:35,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293075752] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:43:35,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791117985] [2023-01-28 09:43:35,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:35,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:35,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:43:35,438 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 09:43:35,469 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 09:43:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:35,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 7 conjunts are in the unsatisfiable core [2023-01-28 09:43:35,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:43:35,754 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 09:43:35,754 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:43:35,920 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 09:43:35,920 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791117985] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:43:35,920 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:43:35,920 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 7 [2023-01-28 09:43:35,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068466720] [2023-01-28 09:43:35,921 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:43:35,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-01-28 09:43:35,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:35,921 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-01-28 09:43:35,921 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-01-28 09:43:35,922 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 197 [2023-01-28 09:43:35,923 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 29 transitions, 217 flow. Second operand has 8 states, 8 states have (on average 79.125) internal successors, (633), 8 states have internal predecessors, (633), 0 states have call successors, (0), 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 09:43:35,923 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:35,923 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 197 [2023-01-28 09:43:35,923 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:36,065 INFO L130 PetriNetUnfolder]: 151/294 cut-off events. [2023-01-28 09:43:36,065 INFO L131 PetriNetUnfolder]: For 923/923 co-relation queries the response was YES. [2023-01-28 09:43:36,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1355 conditions, 294 events. 151/294 cut-off events. For 923/923 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1083 event pairs, 20 based on Foata normal form. 24/318 useless extension candidates. Maximal degree in co-relation 748. Up to 121 conditions per place. [2023-01-28 09:43:36,067 INFO L137 encePairwiseOnDemand]: 193/197 looper letters, 62 selfloop transitions, 15 changer transitions 0/77 dead transitions. [2023-01-28 09:43:36,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 77 transitions, 686 flow [2023-01-28 09:43:36,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 09:43:36,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 09:43:36,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 579 transitions. [2023-01-28 09:43:36,069 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41986947063089197 [2023-01-28 09:43:36,069 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 579 transitions. [2023-01-28 09:43:36,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 579 transitions. [2023-01-28 09:43:36,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:36,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 579 transitions. [2023-01-28 09:43:36,070 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.71428571428571) internal successors, (579), 7 states have internal predecessors, (579), 0 states have call successors, (0), 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 09:43:36,072 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 0 states have call successors, (0), 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 09:43:36,072 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 197.0) internal successors, (1576), 8 states have internal predecessors, (1576), 0 states have call successors, (0), 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 09:43:36,072 INFO L175 Difference]: Start difference. First operand has 37 places, 29 transitions, 217 flow. Second operand 7 states and 579 transitions. [2023-01-28 09:43:36,072 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 77 transitions, 686 flow [2023-01-28 09:43:36,074 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 77 transitions, 682 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-01-28 09:43:36,075 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 363 flow [2023-01-28 09:43:36,075 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=215, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=363, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-01-28 09:43:36,076 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 27 predicate places. [2023-01-28 09:43:36,076 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 363 flow [2023-01-28 09:43:36,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 79.125) internal successors, (633), 8 states have internal predecessors, (633), 0 states have call successors, (0), 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 09:43:36,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:36,076 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:36,083 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 09:43:36,281 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,SelfDestructingSolverStorable5 [2023-01-28 09:43:36,281 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:43:36,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:36,282 INFO L85 PathProgramCache]: Analyzing trace with hash 1308914164, now seen corresponding path program 2 times [2023-01-28 09:43:36,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:36,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400075950] [2023-01-28 09:43:36,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:36,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:36,930 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 09:43:36,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:36,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [400075950] [2023-01-28 09:43:36,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [400075950] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:43:36,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [41496061] [2023-01-28 09:43:36,930 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 09:43:36,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:36,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:43:36,931 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 09:43:36,933 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 09:43:36,992 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 09:43:36,992 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:43:36,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-28 09:43:36,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:43:37,277 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 09:43:37,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:43:37,643 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 09:43:37,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [41496061] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:43:37,643 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:43:37,644 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2023-01-28 09:43:37,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068451752] [2023-01-28 09:43:37,644 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:43:37,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 09:43:37,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:37,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 09:43:37,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2023-01-28 09:43:37,646 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 197 [2023-01-28 09:43:37,646 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 363 flow. Second operand has 12 states, 12 states have (on average 64.75) internal successors, (777), 12 states have internal predecessors, (777), 0 states have call successors, (0), 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 09:43:37,647 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:37,647 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 197 [2023-01-28 09:43:37,647 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:37,973 INFO L130 PetriNetUnfolder]: 298/596 cut-off events. [2023-01-28 09:43:37,973 INFO L131 PetriNetUnfolder]: For 2519/2519 co-relation queries the response was YES. [2023-01-28 09:43:37,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2935 conditions, 596 events. 298/596 cut-off events. For 2519/2519 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 2915 event pairs, 14 based on Foata normal form. 5/601 useless extension candidates. Maximal degree in co-relation 1364. Up to 233 conditions per place. [2023-01-28 09:43:37,977 INFO L137 encePairwiseOnDemand]: 192/197 looper letters, 62 selfloop transitions, 47 changer transitions 2/111 dead transitions. [2023-01-28 09:43:37,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 111 transitions, 1116 flow [2023-01-28 09:43:37,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-01-28 09:43:37,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-01-28 09:43:37,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 687 transitions. [2023-01-28 09:43:37,979 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3487309644670051 [2023-01-28 09:43:37,979 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 687 transitions. [2023-01-28 09:43:37,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 687 transitions. [2023-01-28 09:43:37,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:37,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 687 transitions. [2023-01-28 09:43:37,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 68.7) internal successors, (687), 10 states have internal predecessors, (687), 0 states have call successors, (0), 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 09:43:37,983 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 197.0) internal successors, (2167), 11 states have internal predecessors, (2167), 0 states have call successors, (0), 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 09:43:37,983 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 197.0) internal successors, (2167), 11 states have internal predecessors, (2167), 0 states have call successors, (0), 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 09:43:37,983 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 363 flow. Second operand 10 states and 687 transitions. [2023-01-28 09:43:37,983 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 111 transitions, 1116 flow [2023-01-28 09:43:37,987 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 111 transitions, 1033 flow, removed 37 selfloop flow, removed 2 redundant places. [2023-01-28 09:43:37,989 INFO L231 Difference]: Finished difference. Result has 57 places, 73 transitions, 841 flow [2023-01-28 09:43:37,989 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=841, PETRI_PLACES=57, PETRI_TRANSITIONS=73} [2023-01-28 09:43:37,989 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 39 predicate places. [2023-01-28 09:43:37,989 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 73 transitions, 841 flow [2023-01-28 09:43:37,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 64.75) internal successors, (777), 12 states have internal predecessors, (777), 0 states have call successors, (0), 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 09:43:37,990 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:37,990 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:37,995 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-28 09:43:38,194 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:38,195 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:43:38,195 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:38,195 INFO L85 PathProgramCache]: Analyzing trace with hash -970027468, now seen corresponding path program 3 times [2023-01-28 09:43:38,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:38,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802397853] [2023-01-28 09:43:38,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:38,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:38,814 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 09:43:38,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:38,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802397853] [2023-01-28 09:43:38,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802397853] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:43:38,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [671890791] [2023-01-28 09:43:38,815 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 09:43:38,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:38,815 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:43:38,817 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 09:43:38,848 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 09:43:38,888 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-01-28 09:43:38,888 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:43:38,889 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 16 conjunts are in the unsatisfiable core [2023-01-28 09:43:38,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:43:39,714 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 09:43:39,715 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:43:40,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:43:40,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [671890791] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:43:40,234 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:43:40,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 12 [2023-01-28 09:43:40,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883177000] [2023-01-28 09:43:40,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:43:40,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 09:43:40,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:40,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 09:43:40,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2023-01-28 09:43:40,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 197 [2023-01-28 09:43:40,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 73 transitions, 841 flow. Second operand has 14 states, 14 states have (on average 68.35714285714286) internal successors, (957), 14 states have internal predecessors, (957), 0 states have call successors, (0), 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 09:43:40,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:40,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 197 [2023-01-28 09:43:40,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:41,314 INFO L130 PetriNetUnfolder]: 431/881 cut-off events. [2023-01-28 09:43:41,314 INFO L131 PetriNetUnfolder]: For 4963/4963 co-relation queries the response was YES. [2023-01-28 09:43:41,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4694 conditions, 881 events. 431/881 cut-off events. For 4963/4963 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 4918 event pairs, 16 based on Foata normal form. 6/887 useless extension candidates. Maximal degree in co-relation 3804. Up to 339 conditions per place. [2023-01-28 09:43:41,320 INFO L137 encePairwiseOnDemand]: 192/197 looper letters, 57 selfloop transitions, 101 changer transitions 2/160 dead transitions. [2023-01-28 09:43:41,320 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 160 transitions, 1791 flow [2023-01-28 09:43:41,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-01-28 09:43:41,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2023-01-28 09:43:41,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1075 transitions. [2023-01-28 09:43:41,323 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3637901861252115 [2023-01-28 09:43:41,323 INFO L72 ComplementDD]: Start complementDD. Operand 15 states and 1075 transitions. [2023-01-28 09:43:41,323 INFO L73 IsDeterministic]: Start isDeterministic. Operand 15 states and 1075 transitions. [2023-01-28 09:43:41,324 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:41,324 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 15 states and 1075 transitions. [2023-01-28 09:43:41,325 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 16 states, 15 states have (on average 71.66666666666667) internal successors, (1075), 15 states have internal predecessors, (1075), 0 states have call successors, (0), 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 09:43:41,328 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 16 states, 16 states have (on average 197.0) internal successors, (3152), 16 states have internal predecessors, (3152), 0 states have call successors, (0), 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 09:43:41,329 INFO L81 ComplementDD]: Finished complementDD. Result has 16 states, 16 states have (on average 197.0) internal successors, (3152), 16 states have internal predecessors, (3152), 0 states have call successors, (0), 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 09:43:41,329 INFO L175 Difference]: Start difference. First operand has 57 places, 73 transitions, 841 flow. Second operand 15 states and 1075 transitions. [2023-01-28 09:43:41,329 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 160 transitions, 1791 flow [2023-01-28 09:43:41,338 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 160 transitions, 1700 flow, removed 44 selfloop flow, removed 1 redundant places. [2023-01-28 09:43:41,339 INFO L231 Difference]: Finished difference. Result has 71 places, 111 transitions, 1378 flow [2023-01-28 09:43:41,340 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=750, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1378, PETRI_PLACES=71, PETRI_TRANSITIONS=111} [2023-01-28 09:43:41,340 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 53 predicate places. [2023-01-28 09:43:41,340 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 111 transitions, 1378 flow [2023-01-28 09:43:41,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 68.35714285714286) internal successors, (957), 14 states have internal predecessors, (957), 0 states have call successors, (0), 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 09:43:41,341 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:41,341 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:41,346 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 09:43:41,545 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:41,545 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:43:41,546 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:41,546 INFO L85 PathProgramCache]: Analyzing trace with hash 1894613441, now seen corresponding path program 4 times [2023-01-28 09:43:41,546 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:41,546 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090336055] [2023-01-28 09:43:41,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:41,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:41,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:41,823 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:43:41,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:41,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090336055] [2023-01-28 09:43:41,823 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090336055] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:43:41,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1892684255] [2023-01-28 09:43:41,824 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 09:43:41,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:41,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:43:41,839 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:43:41,839 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 09:43:41,930 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 09:43:41,930 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:43:41,931 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 09:43:41,932 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:43:42,014 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:43:42,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:43:42,146 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:43:42,146 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1892684255] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:43:42,146 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:43:42,146 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2023-01-28 09:43:42,146 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197829371] [2023-01-28 09:43:42,146 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:43:42,147 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 09:43:42,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:43:42,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 09:43:42,147 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2023-01-28 09:43:42,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 197 [2023-01-28 09:43:42,149 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 111 transitions, 1378 flow. Second operand has 16 states, 16 states have (on average 79.625) internal successors, (1274), 16 states have internal predecessors, (1274), 0 states have call successors, (0), 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 09:43:42,149 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:43:42,149 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 197 [2023-01-28 09:43:42,149 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:43:50,404 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 09:43:52,674 INFO L130 PetriNetUnfolder]: 988/2041 cut-off events. [2023-01-28 09:43:52,675 INFO L131 PetriNetUnfolder]: For 15755/15755 co-relation queries the response was YES. [2023-01-28 09:43:52,681 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11713 conditions, 2041 events. 988/2041 cut-off events. For 15755/15755 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 14051 event pairs, 0 based on Foata normal form. 402/2443 useless extension candidates. Maximal degree in co-relation 10000. Up to 751 conditions per place. [2023-01-28 09:43:52,688 INFO L137 encePairwiseOnDemand]: 192/197 looper letters, 197 selfloop transitions, 244 changer transitions 141/582 dead transitions. [2023-01-28 09:43:52,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 582 transitions, 7744 flow [2023-01-28 09:43:52,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-01-28 09:43:52,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2023-01-28 09:43:52,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 5493 transitions. [2023-01-28 09:43:52,699 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41616789150693234 [2023-01-28 09:43:52,699 INFO L72 ComplementDD]: Start complementDD. Operand 67 states and 5493 transitions. [2023-01-28 09:43:52,699 INFO L73 IsDeterministic]: Start isDeterministic. Operand 67 states and 5493 transitions. [2023-01-28 09:43:52,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:43:52,702 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 67 states and 5493 transitions. [2023-01-28 09:43:52,709 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 68 states, 67 states have (on average 81.98507462686567) internal successors, (5493), 67 states have internal predecessors, (5493), 0 states have call successors, (0), 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 09:43:52,751 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 68 states, 68 states have (on average 197.0) internal successors, (13396), 68 states have internal predecessors, (13396), 0 states have call successors, (0), 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 09:43:52,753 INFO L81 ComplementDD]: Finished complementDD. Result has 68 states, 68 states have (on average 197.0) internal successors, (13396), 68 states have internal predecessors, (13396), 0 states have call successors, (0), 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 09:43:52,753 INFO L175 Difference]: Start difference. First operand has 71 places, 111 transitions, 1378 flow. Second operand 67 states and 5493 transitions. [2023-01-28 09:43:52,753 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 582 transitions, 7744 flow [2023-01-28 09:43:52,789 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 582 transitions, 6062 flow, removed 744 selfloop flow, removed 8 redundant places. [2023-01-28 09:43:52,794 INFO L231 Difference]: Finished difference. Result has 138 places, 302 transitions, 3518 flow [2023-01-28 09:43:52,794 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=989, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=63, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=67, PETRI_FLOW=3518, PETRI_PLACES=138, PETRI_TRANSITIONS=302} [2023-01-28 09:43:52,795 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 120 predicate places. [2023-01-28 09:43:52,795 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 302 transitions, 3518 flow [2023-01-28 09:43:52,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 79.625) internal successors, (1274), 16 states have internal predecessors, (1274), 0 states have call successors, (0), 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 09:43:52,795 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:43:52,795 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:43:52,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 09:43:53,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:53,000 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:43:53,000 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:43:53,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1403469600, now seen corresponding path program 5 times [2023-01-28 09:43:53,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:43:53,001 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344263046] [2023-01-28 09:43:53,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:43:53,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:43:53,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:43:53,214 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:43:53,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:43:53,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344263046] [2023-01-28 09:43:53,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344263046] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:43:53,215 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1306953670] [2023-01-28 09:43:53,215 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 09:43:53,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:43:53,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:43:53,230 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:43:53,232 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 09:43:53,299 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2023-01-28 09:43:53,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:43:53,301 INFO L263 TraceCheckSpWp]: Trace formula consists of 118 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 09:43:53,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:43:57,841 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:43:57,842 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:44:18,792 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 09:44:18,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1306953670] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 09:44:18,793 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 09:44:18,793 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 7] total 17 [2023-01-28 09:44:18,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738182427] [2023-01-28 09:44:18,793 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 09:44:18,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 09:44:18,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 09:44:18,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 09:44:18,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=238, Unknown=2, NotChecked=0, Total=306 [2023-01-28 09:44:18,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 197 [2023-01-28 09:44:18,795 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 302 transitions, 3518 flow. Second operand has 18 states, 18 states have (on average 74.44444444444444) internal successors, (1340), 18 states have internal predecessors, (1340), 0 states have call successors, (0), 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 09:44:18,795 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 09:44:18,796 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 197 [2023-01-28 09:44:18,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 09:44:29,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2023-01-28 09:44:41,274 INFO L130 PetriNetUnfolder]: 1011/1870 cut-off events. [2023-01-28 09:44:41,274 INFO L131 PetriNetUnfolder]: For 9484/9484 co-relation queries the response was YES. [2023-01-28 09:44:41,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10487 conditions, 1870 events. 1011/1870 cut-off events. For 9484/9484 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 10765 event pairs, 4 based on Foata normal form. 116/1986 useless extension candidates. Maximal degree in co-relation 10422. Up to 662 conditions per place. [2023-01-28 09:44:41,286 INFO L137 encePairwiseOnDemand]: 192/197 looper letters, 311 selfloop transitions, 307 changer transitions 0/618 dead transitions. [2023-01-28 09:44:41,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 618 transitions, 7552 flow [2023-01-28 09:44:41,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-01-28 09:44:41,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2023-01-28 09:44:41,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3294 transitions. [2023-01-28 09:44:41,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3888560972730492 [2023-01-28 09:44:41,291 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 3294 transitions. [2023-01-28 09:44:41,291 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 3294 transitions. [2023-01-28 09:44:41,294 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 09:44:41,294 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 3294 transitions. [2023-01-28 09:44:41,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 76.6046511627907) internal successors, (3294), 43 states have internal predecessors, (3294), 0 states have call successors, (0), 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 09:44:41,303 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 197.0) internal successors, (8668), 44 states have internal predecessors, (8668), 0 states have call successors, (0), 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 09:44:41,304 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 197.0) internal successors, (8668), 44 states have internal predecessors, (8668), 0 states have call successors, (0), 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 09:44:41,305 INFO L175 Difference]: Start difference. First operand has 138 places, 302 transitions, 3518 flow. Second operand 43 states and 3294 transitions. [2023-01-28 09:44:41,305 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 618 transitions, 7552 flow [2023-01-28 09:44:41,359 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 149 places, 618 transitions, 5921 flow, removed 729 selfloop flow, removed 16 redundant places. [2023-01-28 09:44:41,365 INFO L231 Difference]: Finished difference. Result has 171 places, 480 transitions, 5316 flow [2023-01-28 09:44:41,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=197, PETRI_DIFFERENCE_MINUEND_FLOW=2498, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=297, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=5316, PETRI_PLACES=171, PETRI_TRANSITIONS=480} [2023-01-28 09:44:41,366 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 153 predicate places. [2023-01-28 09:44:41,366 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 480 transitions, 5316 flow [2023-01-28 09:44:41,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 74.44444444444444) internal successors, (1340), 18 states have internal predecessors, (1340), 0 states have call successors, (0), 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 09:44:41,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 09:44:41,367 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 09:44:41,377 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-01-28 09:44:41,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:41,580 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 09:44:41,580 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 09:44:41,580 INFO L85 PathProgramCache]: Analyzing trace with hash -2100218938, now seen corresponding path program 6 times [2023-01-28 09:44:41,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 09:44:41,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111383890] [2023-01-28 09:44:41,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 09:44:41,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 09:44:41,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 09:44:41,963 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:44:41,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 09:44:41,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111383890] [2023-01-28 09:44:41,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111383890] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 09:44:41,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [715890855] [2023-01-28 09:44:41,963 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 09:44:41,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 09:44:41,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 09:44:41,973 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 09:44:41,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 09:44:42,071 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 4 check-sat command(s) [2023-01-28 09:44:42,071 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 09:44:42,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 13 conjunts are in the unsatisfiable core [2023-01-28 09:44:42,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 09:44:42,428 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-01-28 09:44:42,429 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 09:44:52,997 WARN L222 SmtUtils]: Spent 9.61s on a formula simplification. DAG size of input: 1192 DAG size of output: 1111 (called from [L 800] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) Received shutdown request... [2023-01-28 09:58:05,131 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 09:58:05,163 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 09:58:06,150 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 09:58:06,202 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 Cannot interrupt operation gracefully because timeout expired. Forcing shutdown