/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/popl20-proofs-counter-add-4-semi-Q67.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 11:35:28,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 11:35:28,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 11:35:28,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 11:35:28,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 11:35:28,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 11:35:28,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 11:35:28,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 11:35:28,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 11:35:28,157 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 11:35:28,158 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 11:35:28,158 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 11:35:28,158 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 11:35:28,159 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 11:35:28,160 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 11:35:28,160 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 11:35:28,161 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 11:35:28,161 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 11:35:28,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 11:35:28,163 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 11:35:28,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 11:35:28,165 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 11:35:28,165 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 11:35:28,166 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 11:35:28,168 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 11:35:28,168 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 11:35:28,168 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 11:35:28,169 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 11:35:28,169 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 11:35:28,170 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-01-28 11:35:28,170 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-01-28 11:35:28,171 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-01-28 11:35:28,171 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-01-28 11:35:28,172 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-01-28 11:35:28,172 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-01-28 11:35:28,172 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-01-28 11:35:28,173 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-01-28 11:35:28,173 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-01-28 11:35:28,173 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 11:35:28,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 11:35:28,174 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 11:35:28,181 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 11:35:28,200 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 11:35:28,200 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 11:35:28,202 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 11:35:28,203 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 11:35:28,203 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 11:35:28,203 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 11:35:28,203 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 11:35:28,203 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 11:35:28,204 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 11:35:28,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 11:35:28,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 11:35:28,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 11:35:28,204 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 11:35:28,204 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 11:35:28,204 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 11:35:28,204 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 11:35:28,205 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 11:35:28,205 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 11:35:28,205 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 11:35:28,205 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 11:35:28,205 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 11:35:28,205 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 11:35:28,205 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 11:35:28,205 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 11:35:28,205 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 11:35:28,206 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 11:35:28,206 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 11:35:28,206 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 11:35:28,206 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 11:35:28,207 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 11:35:28,207 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 11:35:28,207 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 11:35:28,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 11:35:28,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 11:35:28,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 11:35:28,364 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 11:35:28,365 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 11:35:28,365 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-01-28 11:35:29,189 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 11:35:29,339 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 11:35:29,339 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-01-28 11:35:29,345 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f8b0a3cc/08e434c25bcd484ea7af689b4d8cd783/FLAGb94c29de0 [2023-01-28 11:35:29,360 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2f8b0a3cc/08e434c25bcd484ea7af689b4d8cd783 [2023-01-28 11:35:29,362 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 11:35:29,364 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 11:35:29,366 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 11:35:29,366 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 11:35:29,368 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 11:35:29,368 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 11:35:29" (1/1) ... [2023-01-28 11:35:29,369 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7562a8b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:35:29, skipping insertion in model container [2023-01-28 11:35:29,369 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 11:35:29" (1/1) ... [2023-01-28 11:35:29,374 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 11:35:29,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 11:35:29,527 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/popl20-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2023-01-28 11:35:29,532 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 11:35:29,539 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 11:35:29,552 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/popl20-proofs-counter-add-4-semi-Q67.wvr.c[2611,2624] [2023-01-28 11:35:29,552 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 11:35:29,559 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 11:35:29,559 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 11:35:29,563 INFO L208 MainTranslator]: Completed translation [2023-01-28 11:35:29,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:35:29 WrapperNode [2023-01-28 11:35:29,564 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 11:35:29,565 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 11:35:29,565 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 11:35:29,565 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 11:35:29,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:35:29" (1/1) ... [2023-01-28 11:35:29,581 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:35:29" (1/1) ... [2023-01-28 11:35:29,594 INFO L138 Inliner]: procedures = 22, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 137 [2023-01-28 11:35:29,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 11:35:29,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 11:35:29,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 11:35:29,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 11:35:29,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:35:29" (1/1) ... [2023-01-28 11:35:29,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:35:29" (1/1) ... [2023-01-28 11:35:29,603 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:35:29" (1/1) ... [2023-01-28 11:35:29,603 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:35:29" (1/1) ... [2023-01-28 11:35:29,607 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:35:29" (1/1) ... [2023-01-28 11:35:29,609 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:35:29" (1/1) ... [2023-01-28 11:35:29,610 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:35:29" (1/1) ... [2023-01-28 11:35:29,611 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:35:29" (1/1) ... [2023-01-28 11:35:29,612 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 11:35:29,613 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 11:35:29,613 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 11:35:29,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 11:35:29,613 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:35:29" (1/1) ... [2023-01-28 11:35:29,617 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 11:35:29,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:35:29,633 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 11:35:29,644 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 11:35:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 11:35:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-01-28 11:35:29,661 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-01-28 11:35:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-01-28 11:35:29,661 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-01-28 11:35:29,661 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-01-28 11:35:29,662 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-01-28 11:35:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-01-28 11:35:29,662 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-01-28 11:35:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 11:35:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 11:35:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 11:35:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 11:35:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 11:35:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 11:35:29,662 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 11:35:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-28 11:35:29,662 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 11:35:29,663 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 11:35:29,725 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 11:35:29,727 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 11:35:29,928 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 11:35:29,999 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 11:35:29,999 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-01-28 11:35:30,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 11:35:30 BoogieIcfgContainer [2023-01-28 11:35:30,001 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 11:35:30,003 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 11:35:30,003 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 11:35:30,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 11:35:30,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 11:35:29" (1/3) ... [2023-01-28 11:35:30,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12beddb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 11:35:30, skipping insertion in model container [2023-01-28 11:35:30,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 11:35:29" (2/3) ... [2023-01-28 11:35:30,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12beddb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 11:35:30, skipping insertion in model container [2023-01-28 11:35:30,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 11:35:30" (3/3) ... [2023-01-28 11:35:30,006 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-proofs-counter-add-4-semi-Q67.wvr.c [2023-01-28 11:35:30,019 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 11:35:30,020 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 11:35:30,020 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 11:35:30,089 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-01-28 11:35:30,115 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 131 places, 128 transitions, 288 flow [2023-01-28 11:35:30,153 INFO L130 PetriNetUnfolder]: 10/124 cut-off events. [2023-01-28 11:35:30,153 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 11:35:30,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 141 conditions, 124 events. 10/124 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/113 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2023-01-28 11:35:30,157 INFO L82 GeneralOperation]: Start removeDead. Operand has 131 places, 128 transitions, 288 flow [2023-01-28 11:35:30,160 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 115 places, 112 transitions, 248 flow [2023-01-28 11:35:30,162 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 11:35:30,167 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 115 places, 112 transitions, 248 flow [2023-01-28 11:35:30,170 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 115 places, 112 transitions, 248 flow [2023-01-28 11:35:30,171 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 112 transitions, 248 flow [2023-01-28 11:35:30,212 INFO L130 PetriNetUnfolder]: 10/112 cut-off events. [2023-01-28 11:35:30,212 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 11:35:30,213 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 112 events. 10/112 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 89. Up to 2 conditions per place. [2023-01-28 11:35:30,214 INFO L119 LiptonReduction]: Number of co-enabled transitions 1224 [2023-01-28 11:35:33,690 INFO L134 LiptonReduction]: Checked pairs total: 1470 [2023-01-28 11:35:33,690 INFO L136 LiptonReduction]: Total number of compositions: 100 [2023-01-28 11:35:33,704 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 11:35:33,710 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;@3bd4227f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 11:35:33,710 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-01-28 11:35:33,726 INFO L130 PetriNetUnfolder]: 4/24 cut-off events. [2023-01-28 11:35:33,726 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2023-01-28 11:35:33,727 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:35:33,727 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:35:33,728 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 11:35:33,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:35:33,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1331677596, now seen corresponding path program 1 times [2023-01-28 11:35:33,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:35:33,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490083085] [2023-01-28 11:35:33,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:35:33,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:35:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:35:34,085 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 11:35:34,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:35:34,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490083085] [2023-01-28 11:35:34,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490083085] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:35:34,086 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:35:34,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-28 11:35:34,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579115238] [2023-01-28 11:35:34,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:35:34,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-28 11:35:34,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:35:34,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-28 11:35:34,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-28 11:35:34,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 228 [2023-01-28 11:35:34,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 25 transitions, 74 flow. Second operand has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 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 11:35:34,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:35:34,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 228 [2023-01-28 11:35:34,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:35:34,231 INFO L130 PetriNetUnfolder]: 431/611 cut-off events. [2023-01-28 11:35:34,231 INFO L131 PetriNetUnfolder]: For 82/82 co-relation queries the response was YES. [2023-01-28 11:35:34,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1316 conditions, 611 events. 431/611 cut-off events. For 82/82 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1720 event pairs, 117 based on Foata normal form. 1/414 useless extension candidates. Maximal degree in co-relation 928. Up to 405 conditions per place. [2023-01-28 11:35:34,235 INFO L137 encePairwiseOnDemand]: 222/228 looper letters, 39 selfloop transitions, 3 changer transitions 3/45 dead transitions. [2023-01-28 11:35:34,236 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 45 transitions, 225 flow [2023-01-28 11:35:34,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-28 11:35:34,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-28 11:35:34,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 369 transitions. [2023-01-28 11:35:34,252 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5394736842105263 [2023-01-28 11:35:34,252 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 369 transitions. [2023-01-28 11:35:34,253 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 369 transitions. [2023-01-28 11:35:34,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:35:34,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 369 transitions. [2023-01-28 11:35:34,262 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.0) internal successors, (369), 3 states have internal predecessors, (369), 0 states have call successors, (0), 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 11:35:34,267 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 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 11:35:34,268 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 228.0) internal successors, (912), 4 states have internal predecessors, (912), 0 states have call successors, (0), 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 11:35:34,269 INFO L175 Difference]: Start difference. First operand has 34 places, 25 transitions, 74 flow. Second operand 3 states and 369 transitions. [2023-01-28 11:35:34,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 45 transitions, 225 flow [2023-01-28 11:35:34,274 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 45 transitions, 195 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-01-28 11:35:34,275 INFO L231 Difference]: Finished difference. Result has 29 places, 27 transitions, 81 flow [2023-01-28 11:35:34,277 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=29, PETRI_TRANSITIONS=27} [2023-01-28 11:35:34,279 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -5 predicate places. [2023-01-28 11:35:34,280 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 27 transitions, 81 flow [2023-01-28 11:35:34,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.0) internal successors, (342), 3 states have internal predecessors, (342), 0 states have call successors, (0), 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 11:35:34,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:35:34,280 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:35:34,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 11:35:34,281 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 11:35:34,282 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:35:34,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1009097346, now seen corresponding path program 1 times [2023-01-28 11:35:34,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:35:34,282 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998237383] [2023-01-28 11:35:34,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:35:34,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:35:34,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:35:34,424 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 11:35:34,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:35:34,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998237383] [2023-01-28 11:35:34,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998237383] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:35:34,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:35:34,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 11:35:34,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480398740] [2023-01-28 11:35:34,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:35:34,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 11:35:34,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:35:34,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 11:35:34,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 11:35:34,426 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 228 [2023-01-28 11:35:34,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 27 transitions, 81 flow. Second operand has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 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 11:35:34,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:35:34,427 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 228 [2023-01-28 11:35:34,427 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:35:34,531 INFO L130 PetriNetUnfolder]: 395/575 cut-off events. [2023-01-28 11:35:34,531 INFO L131 PetriNetUnfolder]: For 161/161 co-relation queries the response was YES. [2023-01-28 11:35:34,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1377 conditions, 575 events. 395/575 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1711 event pairs, 45 based on Foata normal form. 36/611 useless extension candidates. Maximal degree in co-relation 474. Up to 369 conditions per place. [2023-01-28 11:35:34,534 INFO L137 encePairwiseOnDemand]: 223/228 looper letters, 33 selfloop transitions, 3 changer transitions 20/56 dead transitions. [2023-01-28 11:35:34,534 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 56 transitions, 261 flow [2023-01-28 11:35:34,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 11:35:34,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 11:35:34,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 418 transitions. [2023-01-28 11:35:34,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4583333333333333 [2023-01-28 11:35:34,536 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 418 transitions. [2023-01-28 11:35:34,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 418 transitions. [2023-01-28 11:35:34,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:35:34,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 418 transitions. [2023-01-28 11:35:34,537 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 104.5) internal successors, (418), 4 states have internal predecessors, (418), 0 states have call successors, (0), 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 11:35:34,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 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 11:35:34,539 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 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 11:35:34,539 INFO L175 Difference]: Start difference. First operand has 29 places, 27 transitions, 81 flow. Second operand 4 states and 418 transitions. [2023-01-28 11:35:34,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 56 transitions, 261 flow [2023-01-28 11:35:34,540 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 56 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 11:35:34,541 INFO L231 Difference]: Finished difference. Result has 32 places, 27 transitions, 91 flow [2023-01-28 11:35:34,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=91, PETRI_PLACES=32, PETRI_TRANSITIONS=27} [2023-01-28 11:35:34,541 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, -2 predicate places. [2023-01-28 11:35:34,541 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 27 transitions, 91 flow [2023-01-28 11:35:34,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.5) internal successors, (382), 4 states have internal predecessors, (382), 0 states have call successors, (0), 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 11:35:34,542 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:35:34,542 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:35:34,542 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 11:35:34,542 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 11:35:34,542 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:35:34,542 INFO L85 PathProgramCache]: Analyzing trace with hash -1082201917, now seen corresponding path program 1 times [2023-01-28 11:35:34,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:35:34,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578251337] [2023-01-28 11:35:34,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:35:34,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:35:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:35:34,681 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 11:35:34,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:35:34,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578251337] [2023-01-28 11:35:34,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578251337] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:35:34,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848215782] [2023-01-28 11:35:34,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:35:34,681 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:35:34,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:35:34,684 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 11:35:34,690 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 11:35:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:35:34,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 11:35:34,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:35:34,927 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 11:35:34,928 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:35:35,000 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 11:35:35,003 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848215782] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 11:35:35,003 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 11:35:35,003 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3] total 9 [2023-01-28 11:35:35,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45598180] [2023-01-28 11:35:35,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:35:35,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 11:35:35,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:35:35,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 11:35:35,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-01-28 11:35:35,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 228 [2023-01-28 11:35:35,006 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 27 transitions, 91 flow. Second operand has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 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 11:35:35,006 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:35:35,006 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 228 [2023-01-28 11:35:35,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:35:35,100 INFO L130 PetriNetUnfolder]: 523/722 cut-off events. [2023-01-28 11:35:35,101 INFO L131 PetriNetUnfolder]: For 284/284 co-relation queries the response was YES. [2023-01-28 11:35:35,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1949 conditions, 722 events. 523/722 cut-off events. For 284/284 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 2001 event pairs, 67 based on Foata normal form. 36/758 useless extension candidates. Maximal degree in co-relation 664. Up to 355 conditions per place. [2023-01-28 11:35:35,105 INFO L137 encePairwiseOnDemand]: 223/228 looper letters, 56 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2023-01-28 11:35:35,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 62 transitions, 315 flow [2023-01-28 11:35:35,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 11:35:35,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 11:35:35,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 454 transitions. [2023-01-28 11:35:35,107 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49780701754385964 [2023-01-28 11:35:35,107 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 454 transitions. [2023-01-28 11:35:35,107 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 454 transitions. [2023-01-28 11:35:35,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:35:35,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 454 transitions. [2023-01-28 11:35:35,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 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 11:35:35,109 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 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 11:35:35,110 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 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 11:35:35,110 INFO L175 Difference]: Start difference. First operand has 32 places, 27 transitions, 91 flow. Second operand 4 states and 454 transitions. [2023-01-28 11:35:35,110 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 62 transitions, 315 flow [2023-01-28 11:35:35,112 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 62 transitions, 305 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 11:35:35,113 INFO L231 Difference]: Finished difference. Result has 34 places, 30 transitions, 120 flow [2023-01-28 11:35:35,113 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=120, PETRI_PLACES=34, PETRI_TRANSITIONS=30} [2023-01-28 11:35:35,114 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-01-28 11:35:35,114 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 30 transitions, 120 flow [2023-01-28 11:35:35,115 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 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 11:35:35,115 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:35:35,115 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:35:35,122 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 11:35:35,320 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:35:35,320 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 11:35:35,321 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:35:35,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1640393862, now seen corresponding path program 2 times [2023-01-28 11:35:35,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:35:35,321 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936539433] [2023-01-28 11:35:35,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:35:35,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:35:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:35:35,453 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 11:35:35,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:35:35,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936539433] [2023-01-28 11:35:35,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936539433] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:35:35,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [360088681] [2023-01-28 11:35:35,454 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 11:35:35,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:35:35,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:35:35,469 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 11:35:35,499 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 11:35:35,542 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 11:35:35,543 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:35:35,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 11:35:35,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:35:35,607 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 11:35:35,607 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:35:35,646 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 11:35:35,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [360088681] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 11:35:35,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 11:35:35,647 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 8 [2023-01-28 11:35:35,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322317438] [2023-01-28 11:35:35,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:35:35,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 11:35:35,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:35:35,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 11:35:35,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2023-01-28 11:35:35,649 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 228 [2023-01-28 11:35:35,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 30 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 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 11:35:35,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:35:35,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 228 [2023-01-28 11:35:35,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:35:35,749 INFO L130 PetriNetUnfolder]: 683/948 cut-off events. [2023-01-28 11:35:35,750 INFO L131 PetriNetUnfolder]: For 733/733 co-relation queries the response was YES. [2023-01-28 11:35:35,751 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2839 conditions, 948 events. 683/948 cut-off events. For 733/733 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 2865 event pairs, 99 based on Foata normal form. 24/972 useless extension candidates. Maximal degree in co-relation 1006. Up to 589 conditions per place. [2023-01-28 11:35:35,755 INFO L137 encePairwiseOnDemand]: 223/228 looper letters, 55 selfloop transitions, 6 changer transitions 0/61 dead transitions. [2023-01-28 11:35:35,755 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 61 transitions, 337 flow [2023-01-28 11:35:35,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 11:35:35,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 11:35:35,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 450 transitions. [2023-01-28 11:35:35,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4934210526315789 [2023-01-28 11:35:35,756 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 450 transitions. [2023-01-28 11:35:35,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 450 transitions. [2023-01-28 11:35:35,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:35:35,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 450 transitions. [2023-01-28 11:35:35,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 112.5) internal successors, (450), 4 states have internal predecessors, (450), 0 states have call successors, (0), 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 11:35:35,759 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 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 11:35:35,760 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 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 11:35:35,760 INFO L175 Difference]: Start difference. First operand has 34 places, 30 transitions, 120 flow. Second operand 4 states and 450 transitions. [2023-01-28 11:35:35,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 61 transitions, 337 flow [2023-01-28 11:35:35,762 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 61 transitions, 337 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 11:35:35,763 INFO L231 Difference]: Finished difference. Result has 39 places, 33 transitions, 159 flow [2023-01-28 11:35:35,763 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=120, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=39, PETRI_TRANSITIONS=33} [2023-01-28 11:35:35,764 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 5 predicate places. [2023-01-28 11:35:35,764 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 33 transitions, 159 flow [2023-01-28 11:35:35,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 0 states have call successors, (0), 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 11:35:35,765 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:35:35,765 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:35:35,777 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 11:35:35,973 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-01-28 11:35:35,975 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 11:35:35,976 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:35:35,976 INFO L85 PathProgramCache]: Analyzing trace with hash -144285389, now seen corresponding path program 1 times [2023-01-28 11:35:35,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:35:35,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1358279829] [2023-01-28 11:35:35,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:35:35,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:35:35,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:35:36,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 11:35:36,083 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:35:36,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1358279829] [2023-01-28 11:35:36,083 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1358279829] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:35:36,083 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567935780] [2023-01-28 11:35:36,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:35:36,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:35:36,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:35:36,084 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 11:35:36,114 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 11:35:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:35:36,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 11:35:36,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:35:36,244 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 11:35:36,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:35:36,288 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 11:35:36,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567935780] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 11:35:36,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 11:35:36,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5, 3] total 9 [2023-01-28 11:35:36,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327141112] [2023-01-28 11:35:36,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:35:36,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 11:35:36,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:35:36,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 11:35:36,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2023-01-28 11:35:36,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 228 [2023-01-28 11:35:36,291 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 33 transitions, 159 flow. Second operand has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 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 11:35:36,291 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:35:36,291 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 228 [2023-01-28 11:35:36,291 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:35:36,484 INFO L130 PetriNetUnfolder]: 1401/1990 cut-off events. [2023-01-28 11:35:36,484 INFO L131 PetriNetUnfolder]: For 2927/2927 co-relation queries the response was YES. [2023-01-28 11:35:36,486 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6439 conditions, 1990 events. 1401/1990 cut-off events. For 2927/2927 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7418 event pairs, 239 based on Foata normal form. 82/2072 useless extension candidates. Maximal degree in co-relation 3337. Up to 875 conditions per place. [2023-01-28 11:35:36,493 INFO L137 encePairwiseOnDemand]: 223/228 looper letters, 71 selfloop transitions, 7 changer transitions 0/78 dead transitions. [2023-01-28 11:35:36,493 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 78 transitions, 500 flow [2023-01-28 11:35:36,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 11:35:36,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 11:35:36,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 456 transitions. [2023-01-28 11:35:36,494 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-01-28 11:35:36,494 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 456 transitions. [2023-01-28 11:35:36,495 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 456 transitions. [2023-01-28 11:35:36,495 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:35:36,495 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 456 transitions. [2023-01-28 11:35:36,496 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 114.0) internal successors, (456), 4 states have internal predecessors, (456), 0 states have call successors, (0), 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 11:35:36,497 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 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 11:35:36,497 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 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 11:35:36,497 INFO L175 Difference]: Start difference. First operand has 39 places, 33 transitions, 159 flow. Second operand 4 states and 456 transitions. [2023-01-28 11:35:36,497 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 78 transitions, 500 flow [2023-01-28 11:35:36,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 78 transitions, 492 flow, removed 4 selfloop flow, removed 0 redundant places. [2023-01-28 11:35:36,500 INFO L231 Difference]: Finished difference. Result has 45 places, 38 transitions, 222 flow [2023-01-28 11:35:36,500 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=222, PETRI_PLACES=45, PETRI_TRANSITIONS=38} [2023-01-28 11:35:36,501 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 11 predicate places. [2023-01-28 11:35:36,501 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 38 transitions, 222 flow [2023-01-28 11:35:36,501 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 103.75) internal successors, (415), 4 states have internal predecessors, (415), 0 states have call successors, (0), 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 11:35:36,501 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:35:36,501 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:35:36,517 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 11:35:36,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:35:36,707 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 11:35:36,707 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:35:36,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1646860855, now seen corresponding path program 2 times [2023-01-28 11:35:36,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:35:36,707 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129703073] [2023-01-28 11:35:36,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:35:36,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:35:36,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:35:36,838 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 11:35:36,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:35:36,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129703073] [2023-01-28 11:35:36,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129703073] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:35:36,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:35:36,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 11:35:36,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222134728] [2023-01-28 11:35:36,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:35:36,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 11:35:36,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:35:36,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 11:35:36,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 11:35:36,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 228 [2023-01-28 11:35:36,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 38 transitions, 222 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 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 11:35:36,843 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:35:36,843 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 228 [2023-01-28 11:35:36,843 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:35:37,010 INFO L130 PetriNetUnfolder]: 1509/2138 cut-off events. [2023-01-28 11:35:37,010 INFO L131 PetriNetUnfolder]: For 5068/5068 co-relation queries the response was YES. [2023-01-28 11:35:37,014 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7652 conditions, 2138 events. 1509/2138 cut-off events. For 5068/5068 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 8000 event pairs, 525 based on Foata normal form. 28/2166 useless extension candidates. Maximal degree in co-relation 3621. Up to 1983 conditions per place. [2023-01-28 11:35:37,023 INFO L137 encePairwiseOnDemand]: 224/228 looper letters, 48 selfloop transitions, 5 changer transitions 12/65 dead transitions. [2023-01-28 11:35:37,023 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 65 transitions, 476 flow [2023-01-28 11:35:37,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 11:35:37,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 11:35:37,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 409 transitions. [2023-01-28 11:35:37,025 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44846491228070173 [2023-01-28 11:35:37,025 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 409 transitions. [2023-01-28 11:35:37,025 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 409 transitions. [2023-01-28 11:35:37,025 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:35:37,025 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 409 transitions. [2023-01-28 11:35:37,026 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 102.25) internal successors, (409), 4 states have internal predecessors, (409), 0 states have call successors, (0), 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 11:35:37,027 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 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 11:35:37,027 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 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 11:35:37,027 INFO L175 Difference]: Start difference. First operand has 45 places, 38 transitions, 222 flow. Second operand 4 states and 409 transitions. [2023-01-28 11:35:37,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 65 transitions, 476 flow [2023-01-28 11:35:37,031 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 65 transitions, 476 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 11:35:37,032 INFO L231 Difference]: Finished difference. Result has 50 places, 41 transitions, 271 flow [2023-01-28 11:35:37,032 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=271, PETRI_PLACES=50, PETRI_TRANSITIONS=41} [2023-01-28 11:35:37,034 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 16 predicate places. [2023-01-28 11:35:37,034 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 41 transitions, 271 flow [2023-01-28 11:35:37,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 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 11:35:37,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:35:37,034 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:35:37,034 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 11:35:37,035 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 11:35:37,035 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:35:37,035 INFO L85 PathProgramCache]: Analyzing trace with hash 2073240921, now seen corresponding path program 3 times [2023-01-28 11:35:37,035 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:35:37,035 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258052822] [2023-01-28 11:35:37,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:35:37,035 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:35:37,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:35:37,156 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 11:35:37,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:35:37,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258052822] [2023-01-28 11:35:37,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258052822] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 11:35:37,157 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 11:35:37,157 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 11:35:37,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614044430] [2023-01-28 11:35:37,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:35:37,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 11:35:37,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:35:37,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 11:35:37,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 11:35:37,159 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 228 [2023-01-28 11:35:37,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 41 transitions, 271 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 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 11:35:37,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:35:37,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 228 [2023-01-28 11:35:37,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:35:37,329 INFO L130 PetriNetUnfolder]: 1295/1808 cut-off events. [2023-01-28 11:35:37,329 INFO L131 PetriNetUnfolder]: For 5078/5078 co-relation queries the response was YES. [2023-01-28 11:35:37,333 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7044 conditions, 1808 events. 1295/1808 cut-off events. For 5078/5078 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 6162 event pairs, 484 based on Foata normal form. 14/1822 useless extension candidates. Maximal degree in co-relation 6790. Up to 1683 conditions per place. [2023-01-28 11:35:37,376 INFO L137 encePairwiseOnDemand]: 224/228 looper letters, 49 selfloop transitions, 5 changer transitions 8/62 dead transitions. [2023-01-28 11:35:37,376 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 62 transitions, 495 flow [2023-01-28 11:35:37,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 11:35:37,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 11:35:37,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 405 transitions. [2023-01-28 11:35:37,378 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440789473684211 [2023-01-28 11:35:37,378 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 405 transitions. [2023-01-28 11:35:37,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 405 transitions. [2023-01-28 11:35:37,378 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:35:37,378 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 405 transitions. [2023-01-28 11:35:37,379 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 101.25) internal successors, (405), 4 states have internal predecessors, (405), 0 states have call successors, (0), 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 11:35:37,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 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 11:35:37,380 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 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 11:35:37,380 INFO L175 Difference]: Start difference. First operand has 50 places, 41 transitions, 271 flow. Second operand 4 states and 405 transitions. [2023-01-28 11:35:37,380 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 62 transitions, 495 flow [2023-01-28 11:35:37,384 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 62 transitions, 484 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-01-28 11:35:37,384 INFO L231 Difference]: Finished difference. Result has 51 places, 42 transitions, 289 flow [2023-01-28 11:35:37,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=289, PETRI_PLACES=51, PETRI_TRANSITIONS=42} [2023-01-28 11:35:37,385 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2023-01-28 11:35:37,385 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 42 transitions, 289 flow [2023-01-28 11:35:37,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 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 11:35:37,385 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:35:37,386 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:35:37,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-28 11:35:37,386 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 11:35:37,386 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:35:37,386 INFO L85 PathProgramCache]: Analyzing trace with hash -469343912, now seen corresponding path program 1 times [2023-01-28 11:35:37,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:35:37,386 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941555872] [2023-01-28 11:35:37,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:35:37,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:35:37,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:35:37,493 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:35:37,493 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:35:37,493 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941555872] [2023-01-28 11:35:37,493 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941555872] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:35:37,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1328205552] [2023-01-28 11:35:37,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:35:37,495 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:35:37,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:35:37,496 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 11:35:37,498 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 11:35:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:35:37,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 11:35:37,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:35:37,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:35:37,652 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:35:37,695 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:35:37,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1328205552] provided 1 perfect and 1 imperfect interpolant sequences [2023-01-28 11:35:37,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-01-28 11:35:37,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4, 3] total 8 [2023-01-28 11:35:37,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041440329] [2023-01-28 11:35:37,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 11:35:37,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 11:35:37,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:35:37,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 11:35:37,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2023-01-28 11:35:37,697 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 228 [2023-01-28 11:35:37,698 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 42 transitions, 289 flow. Second operand has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 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 11:35:37,698 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:35:37,698 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 228 [2023-01-28 11:35:37,698 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:35:37,947 INFO L130 PetriNetUnfolder]: 2542/3579 cut-off events. [2023-01-28 11:35:37,948 INFO L131 PetriNetUnfolder]: For 10236/10236 co-relation queries the response was YES. [2023-01-28 11:35:37,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14195 conditions, 3579 events. 2542/3579 cut-off events. For 10236/10236 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 15162 event pairs, 368 based on Foata normal form. 168/3747 useless extension candidates. Maximal degree in co-relation 7263. Up to 1913 conditions per place. [2023-01-28 11:35:37,973 INFO L137 encePairwiseOnDemand]: 223/228 looper letters, 80 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2023-01-28 11:35:37,973 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 91 transitions, 733 flow [2023-01-28 11:35:37,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 11:35:37,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 11:35:37,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 454 transitions. [2023-01-28 11:35:37,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49780701754385964 [2023-01-28 11:35:37,975 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 454 transitions. [2023-01-28 11:35:37,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 454 transitions. [2023-01-28 11:35:37,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:35:37,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 454 transitions. [2023-01-28 11:35:37,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.5) internal successors, (454), 4 states have internal predecessors, (454), 0 states have call successors, (0), 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 11:35:37,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 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 11:35:37,977 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 228.0) internal successors, (1140), 5 states have internal predecessors, (1140), 0 states have call successors, (0), 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 11:35:37,977 INFO L175 Difference]: Start difference. First operand has 51 places, 42 transitions, 289 flow. Second operand 4 states and 454 transitions. [2023-01-28 11:35:37,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 91 transitions, 733 flow [2023-01-28 11:35:37,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 91 transitions, 727 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-28 11:35:37,983 INFO L231 Difference]: Finished difference. Result has 54 places, 48 transitions, 384 flow [2023-01-28 11:35:37,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=384, PETRI_PLACES=54, PETRI_TRANSITIONS=48} [2023-01-28 11:35:37,985 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 20 predicate places. [2023-01-28 11:35:37,985 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 48 transitions, 384 flow [2023-01-28 11:35:37,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.0) internal successors, (416), 4 states have internal predecessors, (416), 0 states have call successors, (0), 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 11:35:37,986 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:35:37,986 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:35:37,993 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 11:35:38,190 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 11:35:38,191 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 11:35:38,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:35:38,191 INFO L85 PathProgramCache]: Analyzing trace with hash 326712243, now seen corresponding path program 1 times [2023-01-28 11:35:38,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:35:38,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474462545] [2023-01-28 11:35:38,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:35:38,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:35:38,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:35:38,317 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:35:38,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:35:38,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474462545] [2023-01-28 11:35:38,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474462545] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:35:38,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2079953226] [2023-01-28 11:35:38,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:35:38,318 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:35:38,318 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:35:38,319 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 11:35:38,321 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 11:35:38,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:35:38,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 11:35:38,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:35:38,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:35:38,435 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:35:38,472 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 11:35:38,472 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2079953226] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:35:38,472 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:35:38,472 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-01-28 11:35:38,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368851773] [2023-01-28 11:35:38,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:35:38,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 11:35:38,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:35:38,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 11:35:38,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 11:35:38,474 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 228 [2023-01-28 11:35:38,474 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 48 transitions, 384 flow. Second operand has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 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 11:35:38,474 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:35:38,474 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 228 [2023-01-28 11:35:38,474 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:35:39,239 INFO L130 PetriNetUnfolder]: 7768/11212 cut-off events. [2023-01-28 11:35:39,239 INFO L131 PetriNetUnfolder]: For 43561/43561 co-relation queries the response was YES. [2023-01-28 11:35:39,256 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47530 conditions, 11212 events. 7768/11212 cut-off events. For 43561/43561 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 60764 event pairs, 1722 based on Foata normal form. 857/12069 useless extension candidates. Maximal degree in co-relation 25968. Up to 4773 conditions per place. [2023-01-28 11:35:39,294 INFO L137 encePairwiseOnDemand]: 222/228 looper letters, 119 selfloop transitions, 45 changer transitions 3/167 dead transitions. [2023-01-28 11:35:39,294 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 167 transitions, 1571 flow [2023-01-28 11:35:39,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 11:35:39,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 11:35:39,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 629 transitions. [2023-01-28 11:35:39,296 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5517543859649123 [2023-01-28 11:35:39,296 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 629 transitions. [2023-01-28 11:35:39,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 629 transitions. [2023-01-28 11:35:39,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:35:39,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 629 transitions. [2023-01-28 11:35:39,297 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 125.8) internal successors, (629), 5 states have internal predecessors, (629), 0 states have call successors, (0), 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 11:35:39,299 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 228.0) internal successors, (1368), 6 states have internal predecessors, (1368), 0 states have call successors, (0), 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 11:35:39,299 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 228.0) internal successors, (1368), 6 states have internal predecessors, (1368), 0 states have call successors, (0), 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 11:35:39,299 INFO L175 Difference]: Start difference. First operand has 54 places, 48 transitions, 384 flow. Second operand 5 states and 629 transitions. [2023-01-28 11:35:39,299 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 167 transitions, 1571 flow [2023-01-28 11:35:39,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 167 transitions, 1565 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-01-28 11:35:39,315 INFO L231 Difference]: Finished difference. Result has 59 places, 90 transitions, 910 flow [2023-01-28 11:35:39,315 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=910, PETRI_PLACES=59, PETRI_TRANSITIONS=90} [2023-01-28 11:35:39,316 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 25 predicate places. [2023-01-28 11:35:39,316 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 90 transitions, 910 flow [2023-01-28 11:35:39,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.0) internal successors, (560), 5 states have internal predecessors, (560), 0 states have call successors, (0), 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 11:35:39,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:35:39,316 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:35:39,323 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 11:35:39,521 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 11:35:39,521 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 11:35:39,522 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:35:39,522 INFO L85 PathProgramCache]: Analyzing trace with hash -1317515386, now seen corresponding path program 2 times [2023-01-28 11:35:39,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:35:39,522 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910807902] [2023-01-28 11:35:39,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:35:39,522 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:35:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:35:39,734 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:35:39,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:35:39,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910807902] [2023-01-28 11:35:39,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910807902] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:35:39,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [721182694] [2023-01-28 11:35:39,735 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 11:35:39,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:35:39,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:35:39,753 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 11:35:39,801 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 11:35:39,881 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 11:35:39,881 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:35:39,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 11:35:39,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:35:39,962 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 11:35:39,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:35:40,023 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 11:35:40,023 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [721182694] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:35:40,023 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:35:40,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2023-01-28 11:35:40,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165549277] [2023-01-28 11:35:40,025 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:35:40,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 11:35:40,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:35:40,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 11:35:40,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-01-28 11:35:40,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 228 [2023-01-28 11:35:40,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 90 transitions, 910 flow. Second operand has 15 states, 15 states have (on average 93.33333333333333) internal successors, (1400), 15 states have internal predecessors, (1400), 0 states have call successors, (0), 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 11:35:40,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:35:40,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 228 [2023-01-28 11:35:40,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:35:43,195 INFO L130 PetriNetUnfolder]: 24571/35096 cut-off events. [2023-01-28 11:35:43,195 INFO L131 PetriNetUnfolder]: For 166298/166298 co-relation queries the response was YES. [2023-01-28 11:35:43,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 167227 conditions, 35096 events. 24571/35096 cut-off events. For 166298/166298 co-relation queries the response was YES. Maximal size of possible extension queue 1428. Compared 221645 event pairs, 2602 based on Foata normal form. 5500/40596 useless extension candidates. Maximal degree in co-relation 82340. Up to 16813 conditions per place. [2023-01-28 11:35:43,388 INFO L137 encePairwiseOnDemand]: 221/228 looper letters, 746 selfloop transitions, 316 changer transitions 0/1062 dead transitions. [2023-01-28 11:35:43,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 1062 transitions, 10861 flow [2023-01-28 11:35:43,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-01-28 11:35:43,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-01-28 11:35:43,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3588 transitions. [2023-01-28 11:35:43,395 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4496240601503759 [2023-01-28 11:35:43,395 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3588 transitions. [2023-01-28 11:35:43,395 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3588 transitions. [2023-01-28 11:35:43,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:35:43,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3588 transitions. [2023-01-28 11:35:43,403 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 102.51428571428572) internal successors, (3588), 35 states have internal predecessors, (3588), 0 states have call successors, (0), 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 11:35:43,411 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 228.0) internal successors, (8208), 36 states have internal predecessors, (8208), 0 states have call successors, (0), 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 11:35:43,412 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 228.0) internal successors, (8208), 36 states have internal predecessors, (8208), 0 states have call successors, (0), 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 11:35:43,412 INFO L175 Difference]: Start difference. First operand has 59 places, 90 transitions, 910 flow. Second operand 35 states and 3588 transitions. [2023-01-28 11:35:43,413 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 1062 transitions, 10861 flow [2023-01-28 11:35:43,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 1062 transitions, 9625 flow, removed 618 selfloop flow, removed 0 redundant places. [2023-01-28 11:35:43,531 INFO L231 Difference]: Finished difference. Result has 122 places, 389 transitions, 4934 flow [2023-01-28 11:35:43,532 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=808, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=4934, PETRI_PLACES=122, PETRI_TRANSITIONS=389} [2023-01-28 11:35:43,532 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 88 predicate places. [2023-01-28 11:35:43,533 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 389 transitions, 4934 flow [2023-01-28 11:35:43,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 93.33333333333333) internal successors, (1400), 15 states have internal predecessors, (1400), 0 states have call successors, (0), 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 11:35:43,533 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:35:43,534 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:35:43,541 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 11:35:43,738 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 11:35:43,738 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 11:35:43,739 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:35:43,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1179486957, now seen corresponding path program 3 times [2023-01-28 11:35:43,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:35:43,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884090323] [2023-01-28 11:35:43,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:35:43,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:35:43,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:35:43,856 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:35:43,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:35:43,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884090323] [2023-01-28 11:35:43,857 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884090323] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:35:43,857 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101312745] [2023-01-28 11:35:43,857 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 11:35:43,857 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:35:43,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:35:43,858 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 11:35:43,862 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 11:35:43,943 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-28 11:35:43,944 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:35:43,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 11:35:43,946 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:35:44,021 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:35:44,022 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:35:44,097 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:35:44,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101312745] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:35:44,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:35:44,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2023-01-28 11:35:44,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009582477] [2023-01-28 11:35:44,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:35:44,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 11:35:44,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:35:44,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 11:35:44,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2023-01-28 11:35:44,100 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 228 [2023-01-28 11:35:44,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 122 places, 389 transitions, 4934 flow. Second operand has 13 states, 13 states have (on average 94.84615384615384) internal successors, (1233), 13 states have internal predecessors, (1233), 0 states have call successors, (0), 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 11:35:44,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:35:44,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 228 [2023-01-28 11:35:44,103 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:35:50,208 INFO L130 PetriNetUnfolder]: 32911/46963 cut-off events. [2023-01-28 11:35:50,208 INFO L131 PetriNetUnfolder]: For 1425468/1425468 co-relation queries the response was YES. [2023-01-28 11:35:50,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371594 conditions, 46963 events. 32911/46963 cut-off events. For 1425468/1425468 co-relation queries the response was YES. Maximal size of possible extension queue 1950. Compared 305920 event pairs, 6160 based on Foata normal form. 1192/48155 useless extension candidates. Maximal degree in co-relation 306181. Up to 18872 conditions per place. [2023-01-28 11:35:50,769 INFO L137 encePairwiseOnDemand]: 223/228 looper letters, 659 selfloop transitions, 142 changer transitions 45/846 dead transitions. [2023-01-28 11:35:50,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 846 transitions, 12293 flow [2023-01-28 11:35:50,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 11:35:50,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 11:35:50,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1637 transitions. [2023-01-28 11:35:50,772 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4487390350877193 [2023-01-28 11:35:50,772 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1637 transitions. [2023-01-28 11:35:50,772 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1637 transitions. [2023-01-28 11:35:50,773 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:35:50,773 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1637 transitions. [2023-01-28 11:35:50,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 102.3125) internal successors, (1637), 16 states have internal predecessors, (1637), 0 states have call successors, (0), 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 11:35:50,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 228.0) internal successors, (3876), 17 states have internal predecessors, (3876), 0 states have call successors, (0), 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 11:35:50,779 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 228.0) internal successors, (3876), 17 states have internal predecessors, (3876), 0 states have call successors, (0), 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 11:35:50,779 INFO L175 Difference]: Start difference. First operand has 122 places, 389 transitions, 4934 flow. Second operand 16 states and 1637 transitions. [2023-01-28 11:35:50,779 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 846 transitions, 12293 flow [2023-01-28 11:35:53,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 846 transitions, 11201 flow, removed 487 selfloop flow, removed 3 redundant places. [2023-01-28 11:35:53,741 INFO L231 Difference]: Finished difference. Result has 140 places, 495 transitions, 6778 flow [2023-01-28 11:35:53,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=4199, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=389, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=6778, PETRI_PLACES=140, PETRI_TRANSITIONS=495} [2023-01-28 11:35:53,741 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 106 predicate places. [2023-01-28 11:35:53,742 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 495 transitions, 6778 flow [2023-01-28 11:35:53,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 94.84615384615384) internal successors, (1233), 13 states have internal predecessors, (1233), 0 states have call successors, (0), 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 11:35:53,742 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:35:53,742 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:35:53,750 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 11:35:53,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:35:53,947 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 11:35:53,947 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:35:53,947 INFO L85 PathProgramCache]: Analyzing trace with hash 2010129489, now seen corresponding path program 4 times [2023-01-28 11:35:53,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:35:53,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1410939728] [2023-01-28 11:35:53,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:35:53,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:35:53,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:35:54,219 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 11:35:54,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:35:54,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1410939728] [2023-01-28 11:35:54,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1410939728] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:35:54,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413070873] [2023-01-28 11:35:54,220 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 11:35:54,220 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:35:54,220 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:35:54,221 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 11:35:54,223 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 11:35:54,304 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 11:35:54,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:35:54,305 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 11:35:54,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:35:54,394 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:35:54,394 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:35:54,487 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:35:54,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413070873] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:35:54,487 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:35:54,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 17 [2023-01-28 11:35:54,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467520822] [2023-01-28 11:35:54,487 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:35:54,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-01-28 11:35:54,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:35:54,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-01-28 11:35:54,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2023-01-28 11:35:54,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 228 [2023-01-28 11:35:54,491 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 495 transitions, 6778 flow. Second operand has 18 states, 18 states have (on average 92.38888888888889) internal successors, (1663), 18 states have internal predecessors, (1663), 0 states have call successors, (0), 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 11:35:54,491 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:35:54,491 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 228 [2023-01-28 11:35:54,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:36:05,884 INFO L130 PetriNetUnfolder]: 49792/69719 cut-off events. [2023-01-28 11:36:05,884 INFO L131 PetriNetUnfolder]: For 2415001/2415001 co-relation queries the response was YES. [2023-01-28 11:36:06,368 INFO L83 FinitePrefix]: Finished finitePrefix Result has 599805 conditions, 69719 events. 49792/69719 cut-off events. For 2415001/2415001 co-relation queries the response was YES. Maximal size of possible extension queue 2716. Compared 458008 event pairs, 3954 based on Foata normal form. 1354/71073 useless extension candidates. Maximal degree in co-relation 544874. Up to 23207 conditions per place. [2023-01-28 11:36:06,650 INFO L137 encePairwiseOnDemand]: 221/228 looper letters, 1059 selfloop transitions, 579 changer transitions 44/1682 dead transitions. [2023-01-28 11:36:06,650 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 1682 transitions, 27131 flow [2023-01-28 11:36:06,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-01-28 11:36:06,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2023-01-28 11:36:06,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 3240 transitions. [2023-01-28 11:36:06,655 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4440789473684211 [2023-01-28 11:36:06,655 INFO L72 ComplementDD]: Start complementDD. Operand 32 states and 3240 transitions. [2023-01-28 11:36:06,655 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 3240 transitions. [2023-01-28 11:36:06,656 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:36:06,657 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 32 states and 3240 transitions. [2023-01-28 11:36:06,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 33 states, 32 states have (on average 101.25) internal successors, (3240), 32 states have internal predecessors, (3240), 0 states have call successors, (0), 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 11:36:06,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 33 states, 33 states have (on average 228.0) internal successors, (7524), 33 states have internal predecessors, (7524), 0 states have call successors, (0), 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 11:36:06,668 INFO L81 ComplementDD]: Finished complementDD. Result has 33 states, 33 states have (on average 228.0) internal successors, (7524), 33 states have internal predecessors, (7524), 0 states have call successors, (0), 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 11:36:06,668 INFO L175 Difference]: Start difference. First operand has 140 places, 495 transitions, 6778 flow. Second operand 32 states and 3240 transitions. [2023-01-28 11:36:06,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 1682 transitions, 27131 flow [2023-01-28 11:36:13,166 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 1682 transitions, 25141 flow, removed 891 selfloop flow, removed 6 redundant places. [2023-01-28 11:36:13,192 INFO L231 Difference]: Finished difference. Result has 184 places, 954 transitions, 16579 flow [2023-01-28 11:36:13,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=6022, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=161, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=32, PETRI_FLOW=16579, PETRI_PLACES=184, PETRI_TRANSITIONS=954} [2023-01-28 11:36:13,193 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 150 predicate places. [2023-01-28 11:36:13,193 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 954 transitions, 16579 flow [2023-01-28 11:36:13,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 92.38888888888889) internal successors, (1663), 18 states have internal predecessors, (1663), 0 states have call successors, (0), 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 11:36:13,194 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:36:13,194 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:36:13,198 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 11:36:13,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-01-28 11:36:13,395 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 11:36:13,395 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:36:13,395 INFO L85 PathProgramCache]: Analyzing trace with hash 1258277956, now seen corresponding path program 5 times [2023-01-28 11:36:13,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:36:13,395 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924199960] [2023-01-28 11:36:13,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:36:13,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:36:13,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:36:13,521 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:36:13,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:36:13,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924199960] [2023-01-28 11:36:13,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924199960] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:36:13,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927048925] [2023-01-28 11:36:13,521 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 11:36:13,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:36:13,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:36:13,522 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 11:36:13,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 11:36:13,600 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 11:36:13,600 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:36:13,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 11:36:13,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:36:13,682 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:36:13,682 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:36:13,753 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:36:13,753 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927048925] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:36:13,753 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:36:13,753 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 15 [2023-01-28 11:36:13,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031378195] [2023-01-28 11:36:13,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:36:13,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-01-28 11:36:13,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:36:13,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-01-28 11:36:13,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-01-28 11:36:13,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 228 [2023-01-28 11:36:13,756 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 954 transitions, 16579 flow. Second operand has 16 states, 16 states have (on average 93.0625) internal successors, (1489), 16 states have internal predecessors, (1489), 0 states have call successors, (0), 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 11:36:13,756 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:36:13,756 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 228 [2023-01-28 11:36:13,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:36:34,421 INFO L130 PetriNetUnfolder]: 71081/98866 cut-off events. [2023-01-28 11:36:34,422 INFO L131 PetriNetUnfolder]: For 4113218/4113218 co-relation queries the response was YES. [2023-01-28 11:36:35,312 INFO L83 FinitePrefix]: Finished finitePrefix Result has 923757 conditions, 98866 events. 71081/98866 cut-off events. For 4113218/4113218 co-relation queries the response was YES. Maximal size of possible extension queue 3948. Compared 666810 event pairs, 5286 based on Foata normal form. 5814/104680 useless extension candidates. Maximal degree in co-relation 902438. Up to 37754 conditions per place. [2023-01-28 11:36:35,870 INFO L137 encePairwiseOnDemand]: 221/228 looper letters, 1550 selfloop transitions, 941 changer transitions 69/2560 dead transitions. [2023-01-28 11:36:35,870 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 2560 transitions, 45616 flow [2023-01-28 11:36:35,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2023-01-28 11:36:35,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2023-01-28 11:36:35,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 3483 transitions. [2023-01-28 11:36:35,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43646616541353384 [2023-01-28 11:36:35,875 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 3483 transitions. [2023-01-28 11:36:35,875 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 3483 transitions. [2023-01-28 11:36:35,876 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:36:35,876 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 3483 transitions. [2023-01-28 11:36:35,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 99.51428571428572) internal successors, (3483), 35 states have internal predecessors, (3483), 0 states have call successors, (0), 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 11:36:35,884 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 228.0) internal successors, (8208), 36 states have internal predecessors, (8208), 0 states have call successors, (0), 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 11:36:35,885 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 228.0) internal successors, (8208), 36 states have internal predecessors, (8208), 0 states have call successors, (0), 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 11:36:35,885 INFO L175 Difference]: Start difference. First operand has 184 places, 954 transitions, 16579 flow. Second operand 35 states and 3483 transitions. [2023-01-28 11:36:35,885 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 2560 transitions, 45616 flow [2023-01-28 11:37:15,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 2560 transitions, 42900 flow, removed 1308 selfloop flow, removed 3 redundant places. [2023-01-28 11:37:15,237 INFO L231 Difference]: Finished difference. Result has 237 places, 1524 transitions, 28336 flow [2023-01-28 11:37:15,238 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=14875, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=954, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=386, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=502, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=28336, PETRI_PLACES=237, PETRI_TRANSITIONS=1524} [2023-01-28 11:37:15,238 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 203 predicate places. [2023-01-28 11:37:15,238 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 1524 transitions, 28336 flow [2023-01-28 11:37:15,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 93.0625) internal successors, (1489), 16 states have internal predecessors, (1489), 0 states have call successors, (0), 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 11:37:15,239 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:37:15,239 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:37:15,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 11:37:15,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-01-28 11:37:15,440 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 11:37:15,440 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:37:15,440 INFO L85 PathProgramCache]: Analyzing trace with hash 32477611, now seen corresponding path program 6 times [2023-01-28 11:37:15,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:37:15,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438171602] [2023-01-28 11:37:15,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:37:15,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:37:15,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:37:15,556 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 11:37:15,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:37:15,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438171602] [2023-01-28 11:37:15,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438171602] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:37:15,557 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569201632] [2023-01-28 11:37:15,557 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 11:37:15,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:37:15,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:37:15,558 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 11:37:15,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 11:37:15,645 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-01-28 11:37:15,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:37:15,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 11:37:15,648 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:37:15,746 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:37:15,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:37:15,840 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:37:15,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569201632] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:37:15,841 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:37:15,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2023-01-28 11:37:15,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113792064] [2023-01-28 11:37:15,842 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:37:15,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 11:37:15,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:37:15,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 11:37:15,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2023-01-28 11:37:15,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 228 [2023-01-28 11:37:15,844 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 1524 transitions, 28336 flow. Second operand has 15 states, 15 states have (on average 97.6) internal successors, (1464), 15 states have internal predecessors, (1464), 0 states have call successors, (0), 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 11:37:15,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:37:15,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 228 [2023-01-28 11:37:15,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:37:48,141 INFO L130 PetriNetUnfolder]: 79095/110427 cut-off events. [2023-01-28 11:37:48,141 INFO L131 PetriNetUnfolder]: For 6087808/6087808 co-relation queries the response was YES. [2023-01-28 11:37:49,621 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1194751 conditions, 110427 events. 79095/110427 cut-off events. For 6087808/6087808 co-relation queries the response was YES. Maximal size of possible extension queue 4457. Compared 759956 event pairs, 4816 based on Foata normal form. 3678/114105 useless extension candidates. Maximal degree in co-relation 1192728. Up to 37627 conditions per place. [2023-01-28 11:37:50,274 INFO L137 encePairwiseOnDemand]: 221/228 looper letters, 1756 selfloop transitions, 924 changer transitions 69/2749 dead transitions. [2023-01-28 11:37:50,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 2749 transitions, 55133 flow [2023-01-28 11:37:50,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2023-01-28 11:37:50,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2023-01-28 11:37:50,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 4634 transitions. [2023-01-28 11:37:50,279 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4516569200779727 [2023-01-28 11:37:50,279 INFO L72 ComplementDD]: Start complementDD. Operand 45 states and 4634 transitions. [2023-01-28 11:37:50,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 4634 transitions. [2023-01-28 11:37:50,280 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:37:50,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 45 states and 4634 transitions. [2023-01-28 11:37:50,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 46 states, 45 states have (on average 102.97777777777777) internal successors, (4634), 45 states have internal predecessors, (4634), 0 states have call successors, (0), 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 11:37:50,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 46 states, 46 states have (on average 228.0) internal successors, (10488), 46 states have internal predecessors, (10488), 0 states have call successors, (0), 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 11:37:50,294 INFO L81 ComplementDD]: Finished complementDD. Result has 46 states, 46 states have (on average 228.0) internal successors, (10488), 46 states have internal predecessors, (10488), 0 states have call successors, (0), 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 11:37:50,294 INFO L175 Difference]: Start difference. First operand has 237 places, 1524 transitions, 28336 flow. Second operand 45 states and 4634 transitions. [2023-01-28 11:37:50,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 2749 transitions, 55133 flow [2023-01-28 11:40:20,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 269 places, 2749 transitions, 50643 flow, removed 1594 selfloop flow, removed 10 redundant places. [2023-01-28 11:40:20,384 INFO L231 Difference]: Finished difference. Result has 285 places, 1800 transitions, 33151 flow [2023-01-28 11:40:20,385 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=24319, PETRI_DIFFERENCE_MINUEND_PLACES=225, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1499, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=609, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=846, PETRI_DIFFERENCE_SUBTRAHEND_STATES=45, PETRI_FLOW=33151, PETRI_PLACES=285, PETRI_TRANSITIONS=1800} [2023-01-28 11:40:20,385 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 251 predicate places. [2023-01-28 11:40:20,385 INFO L495 AbstractCegarLoop]: Abstraction has has 285 places, 1800 transitions, 33151 flow [2023-01-28 11:40:20,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 97.6) internal successors, (1464), 15 states have internal predecessors, (1464), 0 states have call successors, (0), 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 11:40:20,386 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:40:20,386 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:40:20,392 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2023-01-28 11:40:20,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-28 11:40:20,592 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 11:40:20,593 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:40:20,593 INFO L85 PathProgramCache]: Analyzing trace with hash -1518250674, now seen corresponding path program 7 times [2023-01-28 11:40:20,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:40:20,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [215297346] [2023-01-28 11:40:20,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:40:20,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:40:20,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:40:20,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:40:20,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:40:20,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [215297346] [2023-01-28 11:40:20,727 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [215297346] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:40:20,727 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [450219452] [2023-01-28 11:40:20,727 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 11:40:20,727 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:40:20,727 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:40:20,728 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 11:40:20,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-01-28 11:40:20,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:40:20,809 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 11:40:20,810 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:40:20,894 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 11:40:20,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:40:20,957 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-28 11:40:20,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [450219452] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:40:20,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:40:20,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 14 [2023-01-28 11:40:20,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886023461] [2023-01-28 11:40:20,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:40:20,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 11:40:20,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:40:20,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 11:40:20,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2023-01-28 11:40:20,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 228 [2023-01-28 11:40:20,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 285 places, 1800 transitions, 33151 flow. Second operand has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 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 11:40:20,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:40:20,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 228 [2023-01-28 11:40:20,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:41:08,023 INFO L130 PetriNetUnfolder]: 95335/133066 cut-off events. [2023-01-28 11:41:08,024 INFO L131 PetriNetUnfolder]: For 9623872/9623872 co-relation queries the response was YES. [2023-01-28 11:41:10,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1609635 conditions, 133066 events. 95335/133066 cut-off events. For 9623872/9623872 co-relation queries the response was YES. Maximal size of possible extension queue 5500. Compared 937328 event pairs, 10962 based on Foata normal form. 2966/136032 useless extension candidates. Maximal degree in co-relation 1596343. Up to 46129 conditions per place. [2023-01-28 11:41:10,852 INFO L137 encePairwiseOnDemand]: 221/228 looper letters, 2951 selfloop transitions, 1229 changer transitions 161/4341 dead transitions. [2023-01-28 11:41:10,852 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 316 places, 4341 transitions, 98097 flow [2023-01-28 11:41:10,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2023-01-28 11:41:10,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2023-01-28 11:41:10,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 3925 transitions. [2023-01-28 11:41:10,856 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44140800719748086 [2023-01-28 11:41:10,856 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 3925 transitions. [2023-01-28 11:41:10,856 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 3925 transitions. [2023-01-28 11:41:10,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:41:10,857 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 3925 transitions. [2023-01-28 11:41:10,860 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 100.64102564102564) internal successors, (3925), 39 states have internal predecessors, (3925), 0 states have call successors, (0), 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 11:41:10,865 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 228.0) internal successors, (9120), 40 states have internal predecessors, (9120), 0 states have call successors, (0), 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 11:41:10,865 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 228.0) internal successors, (9120), 40 states have internal predecessors, (9120), 0 states have call successors, (0), 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 11:41:10,865 INFO L175 Difference]: Start difference. First operand has 285 places, 1800 transitions, 33151 flow. Second operand 39 states and 3925 transitions. [2023-01-28 11:41:10,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 316 places, 4341 transitions, 98097 flow [2023-01-28 11:47:02,075 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 299 places, 4341 transitions, 93912 flow, removed 1600 selfloop flow, removed 17 redundant places. [2023-01-28 11:47:02,124 INFO L231 Difference]: Finished difference. Result has 321 places, 2312 transitions, 46088 flow [2023-01-28 11:47:02,125 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=228, PETRI_DIFFERENCE_MINUEND_FLOW=31097, PETRI_DIFFERENCE_MINUEND_PLACES=261, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1782, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=755, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=894, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=46088, PETRI_PLACES=321, PETRI_TRANSITIONS=2312} [2023-01-28 11:47:02,125 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 287 predicate places. [2023-01-28 11:47:02,125 INFO L495 AbstractCegarLoop]: Abstraction has has 321 places, 2312 transitions, 46088 flow [2023-01-28 11:47:02,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 92.93333333333334) internal successors, (1394), 15 states have internal predecessors, (1394), 0 states have call successors, (0), 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 11:47:02,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 11:47:02,126 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 11:47:02,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-01-28 11:47:02,326 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 11:47:02,326 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-01-28 11:47:02,327 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 11:47:02,327 INFO L85 PathProgramCache]: Analyzing trace with hash 1979918782, now seen corresponding path program 8 times [2023-01-28 11:47:02,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 11:47:02,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309872945] [2023-01-28 11:47:02,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 11:47:02,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 11:47:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 11:47:02,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:47:02,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 11:47:02,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309872945] [2023-01-28 11:47:02,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309872945] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 11:47:02,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2141109452] [2023-01-28 11:47:02,429 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 11:47:02,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 11:47:02,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 11:47:02,430 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 11:47:02,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-01-28 11:47:02,523 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 11:47:02,523 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 11:47:02,524 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 11 conjunts are in the unsatisfiable core [2023-01-28 11:47:02,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 11:47:02,618 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:47:02,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 11:47:02,684 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-28 11:47:02,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2141109452] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 11:47:02,684 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 11:47:02,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 13 [2023-01-28 11:47:02,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046397787] [2023-01-28 11:47:02,685 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 11:47:02,685 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 11:47:02,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 11:47:02,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 11:47:02,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2023-01-28 11:47:02,686 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 228 [2023-01-28 11:47:02,687 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 321 places, 2312 transitions, 46088 flow. Second operand has 14 states, 14 states have (on average 94.07142857142857) internal successors, (1317), 14 states have internal predecessors, (1317), 0 states have call successors, (0), 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 11:47:02,687 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 11:47:02,687 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 228 [2023-01-28 11:47:02,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 11:48:09,042 INFO L130 PetriNetUnfolder]: 115546/161227 cut-off events. [2023-01-28 11:48:09,042 INFO L131 PetriNetUnfolder]: For 11646482/11646482 co-relation queries the response was YES. [2023-01-28 11:48:11,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2030627 conditions, 161227 events. 115546/161227 cut-off events. For 11646482/11646482 co-relation queries the response was YES. Maximal size of possible extension queue 6625. Compared 1161935 event pairs, 12674 based on Foata normal form. 890/162117 useless extension candidates. Maximal degree in co-relation 2004844. Up to 69078 conditions per place. [2023-01-28 11:48:12,829 INFO L137 encePairwiseOnDemand]: 223/228 looper letters, 3489 selfloop transitions, 1115 changer transitions 167/4771 dead transitions. [2023-01-28 11:48:12,830 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 4771 transitions, 111739 flow [2023-01-28 11:48:12,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-01-28 11:48:12,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-01-28 11:48:12,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1642 transitions. [2023-01-28 11:48:12,832 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45010964912280704 [2023-01-28 11:48:12,832 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1642 transitions. [2023-01-28 11:48:12,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1642 transitions. [2023-01-28 11:48:12,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 11:48:12,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1642 transitions. [2023-01-28 11:48:12,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 102.625) internal successors, (1642), 16 states have internal predecessors, (1642), 0 states have call successors, (0), 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 11:48:12,836 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 228.0) internal successors, (3876), 17 states have internal predecessors, (3876), 0 states have call successors, (0), 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 11:48:12,836 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 228.0) internal successors, (3876), 17 states have internal predecessors, (3876), 0 states have call successors, (0), 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 11:48:12,836 INFO L175 Difference]: Start difference. First operand has 321 places, 2312 transitions, 46088 flow. Second operand 16 states and 1642 transitions. [2023-01-28 11:48:12,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 4771 transitions, 111739 flow Received shutdown request... [2023-01-28 11:49:26,604 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 11:49:26,604 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 11:49:27,617 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 [2023-01-28 11:49:27,618 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-01-28 11:49:27,817 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-01-28 11:49:27,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-01-28 11:49:27,817 WARN L619 AbstractCegarLoop]: Verification canceled: while executing RemoveRedundantFlow. [2023-01-28 11:49:27,818 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-01-28 11:49:27,819 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-01-28 11:49:27,819 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 5 remaining) [2023-01-28 11:49:27,819 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 5 remaining) [2023-01-28 11:49:27,819 INFO L445 BasicCegarLoop]: Path program histogram: [8, 3, 2, 1, 1, 1] [2023-01-28 11:49:27,821 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 11:49:27,821 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 11:49:27,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 11:49:27 BasicIcfg [2023-01-28 11:49:27,823 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 11:49:27,823 INFO L158 Benchmark]: Toolchain (without parser) took 838459.43ms. Allocated memory was 356.5MB in the beginning and 14.9GB in the end (delta: 14.5GB). Free memory was 301.6MB in the beginning and 7.9GB in the end (delta: -7.6GB). Peak memory consumption was 10.1GB. Max. memory is 16.0GB. [2023-01-28 11:49:27,823 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 356.5MB. Free memory is still 305.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 11:49:27,823 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.27ms. Allocated memory is still 356.5MB. Free memory was 301.2MB in the beginning and 290.0MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. [2023-01-28 11:49:27,823 INFO L158 Benchmark]: Boogie Procedure Inliner took 29.64ms. Allocated memory is still 356.5MB. Free memory was 290.0MB in the beginning and 288.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 11:49:27,824 INFO L158 Benchmark]: Boogie Preprocessor took 17.84ms. Allocated memory is still 356.5MB. Free memory was 288.0MB in the beginning and 286.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 11:49:27,824 INFO L158 Benchmark]: RCFGBuilder took 388.25ms. Allocated memory is still 356.5MB. Free memory was 286.7MB in the beginning and 265.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-28 11:49:27,824 INFO L158 Benchmark]: TraceAbstraction took 837820.24ms. Allocated memory was 356.5MB in the beginning and 14.9GB in the end (delta: 14.5GB). Free memory was 265.0MB in the beginning and 7.9GB in the end (delta: -7.6GB). Peak memory consumption was 10.0GB. Max. memory is 16.0GB. [2023-01-28 11:49:27,825 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 356.5MB. Free memory is still 305.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 198.27ms. Allocated memory is still 356.5MB. Free memory was 301.2MB in the beginning and 290.0MB in the end (delta: 11.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 29.64ms. Allocated memory is still 356.5MB. Free memory was 290.0MB in the beginning and 288.0MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 17.84ms. Allocated memory is still 356.5MB. Free memory was 288.0MB in the beginning and 286.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 388.25ms. Allocated memory is still 356.5MB. Free memory was 286.7MB in the beginning and 265.7MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 837820.24ms. Allocated memory was 356.5MB in the beginning and 14.9GB in the end (delta: 14.5GB). Free memory was 265.0MB in the beginning and 7.9GB in the end (delta: -7.6GB). Peak memory consumption was 10.0GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.5s, 115 PlacesBefore, 34 PlacesAfterwards, 112 TransitionsBefore, 25 TransitionsAfterwards, 1224 CoEnabledTransitionPairs, 7 FixpointIterations, 56 TrivialSequentialCompositions, 25 ConcurrentSequentialCompositions, 5 TrivialYvCompositions, 8 ConcurrentYvCompositions, 6 ChoiceCompositions, 100 TotalNumberOfCompositions, 1470 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1470, independent: 1470, independent conditional: 0, independent unconditional: 1470, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 652, independent: 652, independent conditional: 0, independent unconditional: 652, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1470, independent: 818, independent conditional: 0, independent unconditional: 818, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 652, unknown conditional: 0, unknown unconditional: 652] , Statistics on independence cache: Total cache size (in pairs): 62, Positive cache size: 62, Positive conditional cache size: 0, Positive unconditional cache size: 62, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 95]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - TimeoutResultAtElement [Line: 96]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing RemoveRedundantFlow. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 143 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 837.7s, OverallIterations: 16, TraceHistogramMax: 2, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 826.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2702 SdHoareTripleChecker+Valid, 3.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2702 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 166 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5804 IncrementalHoareTripleChecker+Invalid, 5970 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 166 mSolverCounterUnsat, 0 mSDtfsCounter, 5804 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 810 GetRequests, 513 SyntacticMatches, 5 SemanticMatches, 292 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2519 ImplicationChecksByTransitivity, 2.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46088occurred in iteration=15, InterpolantAutomatonStates: 238, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 685 NumberOfCodeBlocks, 685 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 943 ConstructedInterpolants, 0 QuantifiedInterpolants, 6127 SizeOfPredicates, 72 NumberOfNonLiveVariables, 2823 ConjunctsInSsa, 128 ConjunctsInUnsatCore, 40 InterpolantComputations, 8 PerfectInterpolantSequences, 99/164 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown