/usr/bin/java -Xmx8000000000 -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-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_REDUNDANT_FLOW -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 12:52:18,299 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 12:52:18,301 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 12:52:18,351 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 12:52:18,353 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 12:52:18,355 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 12:52:18,358 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 12:52:18,361 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 12:52:18,365 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 12:52:18,370 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 12:52:18,370 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 12:52:18,372 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 12:52:18,373 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 12:52:18,375 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 12:52:18,376 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 12:52:18,378 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 12:52:18,379 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 12:52:18,379 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 12:52:18,382 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 12:52:18,386 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 12:52:18,387 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 12:52:18,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 12:52:18,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 12:52:18,390 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 12:52:18,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 12:52:18,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 12:52:18,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 12:52:18,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 12:52:18,398 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 12:52:18,399 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 12:52:18,399 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 12:52:18,404 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 12:52:18,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 12:52:18,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 12:52:18,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 12:52:18,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 12:52:18,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 12:52:18,408 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 12:52:18,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 12:52:18,409 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 12:52:18,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 12:52:18,411 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-NoLbe.epf [2022-12-12 12:52:18,442 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 12:52:18,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 12:52:18,443 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 12:52:18,443 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 12:52:18,444 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 12:52:18,445 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 12:52:18,445 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 12:52:18,445 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 12:52:18,445 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 12:52:18,446 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 12:52:18,446 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 12:52:18,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 12:52:18,447 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 12:52:18,447 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 12:52:18,447 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 12:52:18,447 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 12:52:18,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 12:52:18,447 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 12:52:18,448 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 12:52:18,448 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 12:52:18,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 12:52:18,448 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 12:52:18,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 12:52:18,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:52:18,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 12:52:18,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 12:52:18,449 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 12:52:18,449 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-12 12:52:18,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 12:52:18,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 12:52:18,449 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 12:52:18,450 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_REDUNDANT_FLOW [2022-12-12 12:52:18,788 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 12:52:18,805 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 12:52:18,807 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 12:52:18,808 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 12:52:18,808 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 12:52:18,809 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2022-12-12 12:52:19,942 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 12:52:20,150 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 12:52:20,151 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c [2022-12-12 12:52:20,160 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/387f86f36/30645047e196454da02ad8bda98cf1d7/FLAG29406ba11 [2022-12-12 12:52:20,172 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/387f86f36/30645047e196454da02ad8bda98cf1d7 [2022-12-12 12:52:20,174 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 12:52:20,176 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 12:52:20,177 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 12:52:20,177 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 12:52:20,179 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 12:52:20,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:52:20" (1/1) ... [2022-12-12 12:52:20,181 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ebeb460 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:52:20, skipping insertion in model container [2022-12-12 12:52:20,181 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 12:52:20" (1/1) ... [2022-12-12 12:52:20,187 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 12:52:20,208 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 12:52:20,362 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:52:20,364 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:52:20,364 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:52:20,365 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:52:20,371 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:52:20,372 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:52:20,373 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:52:20,373 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:52:20,389 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c[2554,2567] [2022-12-12 12:52:20,393 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:52:20,402 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 12:52:20,420 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:52:20,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:52:20,422 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:52:20,422 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:52:20,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:52:20,426 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:52:20,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 12:52:20,427 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 12:52:20,440 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-2.wvr.c[2554,2567] [2022-12-12 12:52:20,441 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 12:52:20,454 INFO L208 MainTranslator]: Completed translation [2022-12-12 12:52:20,454 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:52:20 WrapperNode [2022-12-12 12:52:20,455 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 12:52:20,456 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 12:52:20,456 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 12:52:20,456 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 12:52:20,462 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:52:20" (1/1) ... [2022-12-12 12:52:20,475 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:52:20" (1/1) ... [2022-12-12 12:52:20,497 INFO L138 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-12-12 12:52:20,498 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 12:52:20,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 12:52:20,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 12:52:20,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 12:52:20,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:52:20" (1/1) ... [2022-12-12 12:52:20,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:52:20" (1/1) ... [2022-12-12 12:52:20,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:52:20" (1/1) ... [2022-12-12 12:52:20,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:52:20" (1/1) ... [2022-12-12 12:52:20,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:52:20" (1/1) ... [2022-12-12 12:52:20,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:52:20" (1/1) ... [2022-12-12 12:52:20,531 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:52:20" (1/1) ... [2022-12-12 12:52:20,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:52:20" (1/1) ... [2022-12-12 12:52:20,533 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 12:52:20,534 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 12:52:20,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 12:52:20,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 12:52:20,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:52:20" (1/1) ... [2022-12-12 12:52:20,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 12:52:20,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:52:20,573 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) [2022-12-12 12:52:20,594 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 [2022-12-12 12:52:20,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 12:52:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 12:52:20,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 12:52:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 12:52:20,613 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 12:52:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 12:52:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 12:52:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 12:52:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 12:52:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 12:52:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 12:52:20,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 12:52:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 12:52:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 12:52:20,615 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 12:52:20,719 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 12:52:20,721 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 12:52:20,944 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 12:52:20,968 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 12:52:20,968 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-12 12:52:20,970 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:52:20 BoogieIcfgContainer [2022-12-12 12:52:20,971 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 12:52:20,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 12:52:20,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 12:52:20,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 12:52:20,976 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 12:52:20" (1/3) ... [2022-12-12 12:52:20,977 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2327049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:52:20, skipping insertion in model container [2022-12-12 12:52:20,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 12:52:20" (2/3) ... [2022-12-12 12:52:20,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2327049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 12:52:20, skipping insertion in model container [2022-12-12 12:52:20,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 12:52:20" (3/3) ... [2022-12-12 12:52:20,979 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2022-12-12 12:52:20,995 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 12:52:20,996 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 12:52:20,996 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 12:52:21,079 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 12:52:21,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 96 places, 97 transitions, 210 flow [2022-12-12 12:52:21,185 INFO L130 PetriNetUnfolder]: 8/95 cut-off events. [2022-12-12 12:52:21,186 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 12:52:21,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104 conditions, 95 events. 8/95 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 70 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 59. Up to 2 conditions per place. [2022-12-12 12:52:21,190 INFO L82 GeneralOperation]: Start removeDead. Operand has 96 places, 97 transitions, 210 flow [2022-12-12 12:52:21,193 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 86 places, 87 transitions, 186 flow [2022-12-12 12:52:21,201 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 12:52:21,207 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;@2f2e973e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 12:52:21,207 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 12:52:21,242 INFO L130 PetriNetUnfolder]: 8/86 cut-off events. [2022-12-12 12:52:21,243 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 12:52:21,243 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:52:21,244 INFO L214 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:52:21,245 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:52:21,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:52:21,249 INFO L85 PathProgramCache]: Analyzing trace with hash 747985082, now seen corresponding path program 1 times [2022-12-12 12:52:21,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:52:21,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220717093] [2022-12-12 12:52:21,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:52:21,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:52:21,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:52:21,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:52:21,988 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:52:21,988 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220717093] [2022-12-12 12:52:21,989 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220717093] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:52:21,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:52:21,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-12 12:52:21,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332764371] [2022-12-12 12:52:21,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:52:21,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 12:52:22,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:52:22,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 12:52:22,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-12 12:52:22,037 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2022-12-12 12:52:22,043 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 87 transitions, 186 flow. Second operand has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 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) [2022-12-12 12:52:22,044 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:52:22,044 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2022-12-12 12:52:22,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:52:22,228 INFO L130 PetriNetUnfolder]: 22/142 cut-off events. [2022-12-12 12:52:22,228 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-12-12 12:52:22,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 205 conditions, 142 events. 22/142 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 284 event pairs, 0 based on Foata normal form. 14/142 useless extension candidates. Maximal degree in co-relation 97. Up to 33 conditions per place. [2022-12-12 12:52:22,232 INFO L137 encePairwiseOnDemand]: 79/97 looper letters, 15 selfloop transitions, 9 changer transitions 7/94 dead transitions. [2022-12-12 12:52:22,232 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 94 transitions, 271 flow [2022-12-12 12:52:22,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 12:52:22,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 12:52:22,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 687 transitions. [2022-12-12 12:52:22,248 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7869415807560137 [2022-12-12 12:52:22,251 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 8 predicate places. [2022-12-12 12:52:22,252 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 94 transitions, 271 flow [2022-12-12 12:52:22,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 94 transitions, 248 flow, removed 2 selfloop flow, removed 6 redundant places. [2022-12-12 12:52:22,257 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 94 transitions, 248 flow [2022-12-12 12:52:22,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 74.0) internal successors, (518), 7 states have internal predecessors, (518), 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) [2022-12-12 12:52:22,258 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:52:22,258 INFO L214 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:52:22,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 12:52:22,259 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:52:22,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:52:22,261 INFO L85 PathProgramCache]: Analyzing trace with hash -1494380371, now seen corresponding path program 1 times [2022-12-12 12:52:22,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:52:22,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070806959] [2022-12-12 12:52:22,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:52:22,262 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:52:22,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:52:22,754 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:52:22,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:52:22,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070806959] [2022-12-12 12:52:22,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070806959] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:52:22,755 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:52:22,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 12:52:22,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87751391] [2022-12-12 12:52:22,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:52:22,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 12:52:22,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:52:22,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 12:52:22,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-12 12:52:22,758 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 97 [2022-12-12 12:52:22,759 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 94 transitions, 248 flow. Second operand has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 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) [2022-12-12 12:52:22,759 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:52:22,759 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 97 [2022-12-12 12:52:22,759 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:52:22,879 INFO L130 PetriNetUnfolder]: 88/320 cut-off events. [2022-12-12 12:52:22,879 INFO L131 PetriNetUnfolder]: For 92/102 co-relation queries the response was YES. [2022-12-12 12:52:22,881 INFO L83 FinitePrefix]: Finished finitePrefix Result has 579 conditions, 320 events. 88/320 cut-off events. For 92/102 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1307 event pairs, 8 based on Foata normal form. 1/271 useless extension candidates. Maximal degree in co-relation 217. Up to 81 conditions per place. [2022-12-12 12:52:22,883 INFO L137 encePairwiseOnDemand]: 87/97 looper letters, 39 selfloop transitions, 8 changer transitions 8/114 dead transitions. [2022-12-12 12:52:22,883 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 114 transitions, 424 flow [2022-12-12 12:52:22,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 12:52:22,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 12:52:22,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 514 transitions. [2022-12-12 12:52:22,885 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7569955817378498 [2022-12-12 12:52:22,886 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 8 predicate places. [2022-12-12 12:52:22,886 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 114 transitions, 424 flow [2022-12-12 12:52:22,888 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 114 transitions, 404 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-12-12 12:52:22,888 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 114 transitions, 404 flow [2022-12-12 12:52:22,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 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) [2022-12-12 12:52:22,889 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:52:22,889 INFO L214 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:52:22,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 12:52:22,889 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:52:22,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:52:22,890 INFO L85 PathProgramCache]: Analyzing trace with hash 1793761617, now seen corresponding path program 2 times [2022-12-12 12:52:22,890 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:52:22,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261565015] [2022-12-12 12:52:22,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:52:22,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:52:22,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:52:23,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:52:23,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:52:23,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261565015] [2022-12-12 12:52:23,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261565015] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:52:23,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:52:23,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 12:52:23,124 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861600850] [2022-12-12 12:52:23,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:52:23,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 12:52:23,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:52:23,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 12:52:23,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-12-12 12:52:23,126 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 97 [2022-12-12 12:52:23,126 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 114 transitions, 404 flow. Second operand has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 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) [2022-12-12 12:52:23,126 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:52:23,126 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 97 [2022-12-12 12:52:23,127 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:52:23,227 INFO L130 PetriNetUnfolder]: 85/292 cut-off events. [2022-12-12 12:52:23,227 INFO L131 PetriNetUnfolder]: For 159/214 co-relation queries the response was YES. [2022-12-12 12:52:23,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 656 conditions, 292 events. 85/292 cut-off events. For 159/214 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1126 event pairs, 6 based on Foata normal form. 1/251 useless extension candidates. Maximal degree in co-relation 133. Up to 71 conditions per place. [2022-12-12 12:52:23,230 INFO L137 encePairwiseOnDemand]: 87/97 looper letters, 34 selfloop transitions, 7 changer transitions 10/110 dead transitions. [2022-12-12 12:52:23,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 110 transitions, 480 flow [2022-12-12 12:52:23,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 12:52:23,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 12:52:23,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 505 transitions. [2022-12-12 12:52:23,232 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7437407952871871 [2022-12-12 12:52:23,233 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 12 predicate places. [2022-12-12 12:52:23,233 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 110 transitions, 480 flow [2022-12-12 12:52:23,236 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 110 transitions, 405 flow, removed 33 selfloop flow, removed 3 redundant places. [2022-12-12 12:52:23,236 INFO L495 AbstractCegarLoop]: Abstraction has has 95 places, 110 transitions, 405 flow [2022-12-12 12:52:23,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 69.33333333333333) internal successors, (416), 6 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) [2022-12-12 12:52:23,237 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:52:23,237 INFO L214 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:52:23,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 12:52:23,237 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:52:23,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:52:23,238 INFO L85 PathProgramCache]: Analyzing trace with hash 180378008, now seen corresponding path program 1 times [2022-12-12 12:52:23,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:52:23,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858548650] [2022-12-12 12:52:23,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:52:23,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:52:23,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:52:23,416 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:52:23,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:52:23,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858548650] [2022-12-12 12:52:23,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [858548650] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:52:23,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:52:23,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 12:52:23,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253401223] [2022-12-12 12:52:23,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:52:23,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 12:52:23,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:52:23,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 12:52:23,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-12 12:52:23,419 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 97 [2022-12-12 12:52:23,420 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 110 transitions, 405 flow. Second operand has 6 states, 6 states have (on average 65.83333333333333) internal successors, (395), 6 states have internal predecessors, (395), 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) [2022-12-12 12:52:23,420 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:52:23,420 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 97 [2022-12-12 12:52:23,420 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:52:23,629 INFO L130 PetriNetUnfolder]: 115/386 cut-off events. [2022-12-12 12:52:23,629 INFO L131 PetriNetUnfolder]: For 246/288 co-relation queries the response was YES. [2022-12-12 12:52:23,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 887 conditions, 386 events. 115/386 cut-off events. For 246/288 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1809 event pairs, 6 based on Foata normal form. 2/339 useless extension candidates. Maximal degree in co-relation 321. Up to 118 conditions per place. [2022-12-12 12:52:23,635 INFO L137 encePairwiseOnDemand]: 83/97 looper letters, 53 selfloop transitions, 14 changer transitions 14/136 dead transitions. [2022-12-12 12:52:23,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 136 transitions, 689 flow [2022-12-12 12:52:23,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 12:52:23,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 12:52:23,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 560 transitions. [2022-12-12 12:52:23,637 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7216494845360825 [2022-12-12 12:52:23,638 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 16 predicate places. [2022-12-12 12:52:23,639 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 136 transitions, 689 flow [2022-12-12 12:52:23,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 136 transitions, 669 flow, removed 8 selfloop flow, removed 2 redundant places. [2022-12-12 12:52:23,642 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 136 transitions, 669 flow [2022-12-12 12:52:23,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.83333333333333) internal successors, (395), 6 states have internal predecessors, (395), 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) [2022-12-12 12:52:23,643 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:52:23,643 INFO L214 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:52:23,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 12:52:23,643 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:52:23,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:52:23,644 INFO L85 PathProgramCache]: Analyzing trace with hash -115312310, now seen corresponding path program 2 times [2022-12-12 12:52:23,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:52:23,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687822133] [2022-12-12 12:52:23,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:52:23,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:52:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:52:23,882 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:52:23,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:52:23,882 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687822133] [2022-12-12 12:52:23,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687822133] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:52:23,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:52:23,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 12:52:23,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070690325] [2022-12-12 12:52:23,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:52:23,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 12:52:23,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:52:23,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 12:52:23,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-12 12:52:23,888 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 62 out of 97 [2022-12-12 12:52:23,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 136 transitions, 669 flow. Second operand has 6 states, 6 states have (on average 65.83333333333333) internal successors, (395), 6 states have internal predecessors, (395), 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) [2022-12-12 12:52:23,889 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:52:23,893 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 62 of 97 [2022-12-12 12:52:23,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:52:24,050 INFO L130 PetriNetUnfolder]: 106/372 cut-off events. [2022-12-12 12:52:24,050 INFO L131 PetriNetUnfolder]: For 453/549 co-relation queries the response was YES. [2022-12-12 12:52:24,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1035 conditions, 372 events. 106/372 cut-off events. For 453/549 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 1618 event pairs, 5 based on Foata normal form. 7/336 useless extension candidates. Maximal degree in co-relation 401. Up to 112 conditions per place. [2022-12-12 12:52:24,053 INFO L137 encePairwiseOnDemand]: 85/97 looper letters, 59 selfloop transitions, 17 changer transitions 14/145 dead transitions. [2022-12-12 12:52:24,053 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 107 places, 145 transitions, 900 flow [2022-12-12 12:52:24,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 12:52:24,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 12:52:24,055 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 554 transitions. [2022-12-12 12:52:24,055 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7139175257731959 [2022-12-12 12:52:24,057 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 21 predicate places. [2022-12-12 12:52:24,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 107 places, 145 transitions, 900 flow [2022-12-12 12:52:24,061 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 145 transitions, 876 flow, removed 10 selfloop flow, removed 2 redundant places. [2022-12-12 12:52:24,062 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 145 transitions, 876 flow [2022-12-12 12:52:24,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 65.83333333333333) internal successors, (395), 6 states have internal predecessors, (395), 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) [2022-12-12 12:52:24,062 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:52:24,062 INFO L214 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, 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, 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, 1, 1] [2022-12-12 12:52:24,062 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 12:52:24,063 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:52:24,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:52:24,064 INFO L85 PathProgramCache]: Analyzing trace with hash 125140519, now seen corresponding path program 1 times [2022-12-12 12:52:24,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:52:24,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048101836] [2022-12-12 12:52:24,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:52:24,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:52:24,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:52:24,457 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:52:24,457 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:52:24,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048101836] [2022-12-12 12:52:24,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048101836] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:52:24,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [672342011] [2022-12-12 12:52:24,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:52:24,458 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:52:24,458 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:52:24,467 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) [2022-12-12 12:52:24,487 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-12 12:52:24,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:52:24,561 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 12:52:24,566 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:52:24,931 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:52:24,931 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:52:25,214 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:52:25,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [672342011] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:52:25,214 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:52:25,215 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-12-12 12:52:25,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340279450] [2022-12-12 12:52:25,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:52:25,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 12:52:25,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:52:25,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 12:52:25,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-12-12 12:52:25,218 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 97 [2022-12-12 12:52:25,219 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 145 transitions, 876 flow. Second operand has 18 states, 18 states have (on average 64.0) internal successors, (1152), 18 states have internal predecessors, (1152), 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) [2022-12-12 12:52:25,219 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:52:25,219 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 97 [2022-12-12 12:52:25,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:52:25,897 INFO L130 PetriNetUnfolder]: 166/512 cut-off events. [2022-12-12 12:52:25,898 INFO L131 PetriNetUnfolder]: For 1030/1230 co-relation queries the response was YES. [2022-12-12 12:52:25,899 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1736 conditions, 512 events. 166/512 cut-off events. For 1030/1230 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2396 event pairs, 7 based on Foata normal form. 9/464 useless extension candidates. Maximal degree in co-relation 1156. Up to 194 conditions per place. [2022-12-12 12:52:25,903 INFO L137 encePairwiseOnDemand]: 80/97 looper letters, 102 selfloop transitions, 29 changer transitions 14/199 dead transitions. [2022-12-12 12:52:25,904 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 199 transitions, 1603 flow [2022-12-12 12:52:25,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-12 12:52:25,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-12 12:52:25,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1268 transitions. [2022-12-12 12:52:25,908 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6880086814975583 [2022-12-12 12:52:25,911 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 37 predicate places. [2022-12-12 12:52:25,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 199 transitions, 1603 flow [2022-12-12 12:52:25,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 199 transitions, 1180 flow, removed 200 selfloop flow, removed 7 redundant places. [2022-12-12 12:52:25,918 INFO L495 AbstractCegarLoop]: Abstraction has has 116 places, 199 transitions, 1180 flow [2022-12-12 12:52:25,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 64.0) internal successors, (1152), 18 states have internal predecessors, (1152), 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) [2022-12-12 12:52:25,919 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:52:25,919 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:52:25,930 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-12 12:52:26,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-12 12:52:26,128 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:52:26,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:52:26,128 INFO L85 PathProgramCache]: Analyzing trace with hash -888903141, now seen corresponding path program 2 times [2022-12-12 12:52:26,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:52:26,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039843311] [2022-12-12 12:52:26,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:52:26,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:52:26,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:52:26,282 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 12:52:26,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:52:26,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039843311] [2022-12-12 12:52:26,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039843311] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:52:26,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:52:26,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 12:52:26,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880511226] [2022-12-12 12:52:26,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:52:26,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 12:52:26,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:52:26,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 12:52:26,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 12:52:26,285 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 97 [2022-12-12 12:52:26,285 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 199 transitions, 1180 flow. Second operand has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 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) [2022-12-12 12:52:26,285 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:52:26,285 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 97 [2022-12-12 12:52:26,285 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:52:26,426 INFO L130 PetriNetUnfolder]: 405/1099 cut-off events. [2022-12-12 12:52:26,426 INFO L131 PetriNetUnfolder]: For 2006/2134 co-relation queries the response was YES. [2022-12-12 12:52:26,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3375 conditions, 1099 events. 405/1099 cut-off events. For 2006/2134 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 7026 event pairs, 20 based on Foata normal form. 2/984 useless extension candidates. Maximal degree in co-relation 2001. Up to 291 conditions per place. [2022-12-12 12:52:26,436 INFO L137 encePairwiseOnDemand]: 92/97 looper letters, 104 selfloop transitions, 5 changer transitions 14/262 dead transitions. [2022-12-12 12:52:26,437 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 119 places, 262 transitions, 1949 flow [2022-12-12 12:52:26,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 12:52:26,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 12:52:26,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 349 transitions. [2022-12-12 12:52:26,438 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8994845360824743 [2022-12-12 12:52:26,439 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 33 predicate places. [2022-12-12 12:52:26,439 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 119 places, 262 transitions, 1949 flow [2022-12-12 12:52:26,445 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 262 transitions, 1947 flow, removed 1 selfloop flow, removed 0 redundant places. [2022-12-12 12:52:26,445 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 262 transitions, 1947 flow [2022-12-12 12:52:26,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 83.75) internal successors, (335), 4 states have internal predecessors, (335), 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) [2022-12-12 12:52:26,446 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:52:26,446 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1] [2022-12-12 12:52:26,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-12 12:52:26,446 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:52:26,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:52:26,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1146333759, now seen corresponding path program 1 times [2022-12-12 12:52:26,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:52:26,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406523827] [2022-12-12 12:52:26,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:52:26,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:52:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:52:26,814 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:52:26,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:52:26,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406523827] [2022-12-12 12:52:26,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406523827] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:52:26,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [858981006] [2022-12-12 12:52:26,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:52:26,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:52:26,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:52:26,817 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) [2022-12-12 12:52:26,846 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-12 12:52:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:52:26,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 12:52:26,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:52:27,286 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 12:52:27,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:52:28,007 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2022-12-12 12:52:28,014 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:52:28,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [858981006] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:52:28,015 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:52:28,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 13] total 27 [2022-12-12 12:52:28,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664401562] [2022-12-12 12:52:28,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:52:28,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-12-12 12:52:28,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:52:28,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-12-12 12:52:28,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=615, Unknown=0, NotChecked=0, Total=702 [2022-12-12 12:52:28,018 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 97 [2022-12-12 12:52:28,020 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 262 transitions, 1947 flow. Second operand has 27 states, 27 states have (on average 62.592592592592595) internal successors, (1690), 27 states have internal predecessors, (1690), 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) [2022-12-12 12:52:28,020 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:52:28,020 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 97 [2022-12-12 12:52:28,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:52:32,054 INFO L130 PetriNetUnfolder]: 760/1917 cut-off events. [2022-12-12 12:52:32,054 INFO L131 PetriNetUnfolder]: For 5013/5298 co-relation queries the response was YES. [2022-12-12 12:52:32,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7156 conditions, 1917 events. 760/1917 cut-off events. For 5013/5298 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 14067 event pairs, 25 based on Foata normal form. 73/1811 useless extension candidates. Maximal degree in co-relation 3396. Up to 557 conditions per place. [2022-12-12 12:52:32,072 INFO L137 encePairwiseOnDemand]: 76/97 looper letters, 255 selfloop transitions, 98 changer transitions 14/424 dead transitions. [2022-12-12 12:52:32,072 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 424 transitions, 4022 flow [2022-12-12 12:52:32,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-12 12:52:32,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2022-12-12 12:52:32,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2850 transitions. [2022-12-12 12:52:32,080 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6677600749765699 [2022-12-12 12:52:32,080 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 76 predicate places. [2022-12-12 12:52:32,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 424 transitions, 4022 flow [2022-12-12 12:52:32,124 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 424 transitions, 3064 flow, removed 453 selfloop flow, removed 12 redundant places. [2022-12-12 12:52:32,124 INFO L495 AbstractCegarLoop]: Abstraction has has 150 places, 424 transitions, 3064 flow [2022-12-12 12:52:32,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 62.592592592592595) internal successors, (1690), 27 states have internal predecessors, (1690), 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) [2022-12-12 12:52:32,125 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:52:32,125 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 1, 1] [2022-12-12 12:52:32,133 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-12 12:52:32,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-12 12:52:32,331 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:52:32,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:52:32,332 INFO L85 PathProgramCache]: Analyzing trace with hash 1009834849, now seen corresponding path program 2 times [2022-12-12 12:52:32,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:52:32,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716236484] [2022-12-12 12:52:32,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:52:32,333 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:52:32,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:52:32,696 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:52:32,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:52:32,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716236484] [2022-12-12 12:52:32,697 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716236484] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:52:32,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1872843035] [2022-12-12 12:52:32,700 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 12:52:32,700 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:52:32,700 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:52:32,702 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) [2022-12-12 12:52:32,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-12 12:52:32,823 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 12:52:32,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 12:52:32,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-12 12:52:32,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:52:33,097 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 12:52:33,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:52:33,565 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 12:52:33,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1872843035] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:52:33,565 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:52:33,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2022-12-12 12:52:33,565 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477893714] [2022-12-12 12:52:33,566 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:52:33,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 12:52:33,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:52:33,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 12:52:33,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-12-12 12:52:33,568 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 97 [2022-12-12 12:52:33,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 424 transitions, 3064 flow. Second operand has 21 states, 21 states have (on average 63.095238095238095) internal successors, (1325), 21 states have internal predecessors, (1325), 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) [2022-12-12 12:52:33,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:52:33,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 97 [2022-12-12 12:52:33,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:52:35,215 INFO L130 PetriNetUnfolder]: 1207/2897 cut-off events. [2022-12-12 12:52:35,216 INFO L131 PetriNetUnfolder]: For 7407/7821 co-relation queries the response was YES. [2022-12-12 12:52:35,222 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11625 conditions, 2897 events. 1207/2897 cut-off events. For 7407/7821 co-relation queries the response was YES. Maximal size of possible extension queue 126. Compared 21351 event pairs, 26 based on Foata normal form. 105/2780 useless extension candidates. Maximal degree in co-relation 8434. Up to 867 conditions per place. [2022-12-12 12:52:35,240 INFO L137 encePairwiseOnDemand]: 78/97 looper letters, 435 selfloop transitions, 98 changer transitions 14/604 dead transitions. [2022-12-12 12:52:35,241 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 604 transitions, 5736 flow [2022-12-12 12:52:35,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-12-12 12:52:35,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2022-12-12 12:52:35,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 1642 transitions. [2022-12-12 12:52:35,244 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6771134020618557 [2022-12-12 12:52:35,245 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 84 predicate places. [2022-12-12 12:52:35,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 604 transitions, 5736 flow [2022-12-12 12:52:35,266 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 604 transitions, 5087 flow, removed 290 selfloop flow, removed 11 redundant places. [2022-12-12 12:52:35,266 INFO L495 AbstractCegarLoop]: Abstraction has has 159 places, 604 transitions, 5087 flow [2022-12-12 12:52:35,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 63.095238095238095) internal successors, (1325), 21 states have internal predecessors, (1325), 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) [2022-12-12 12:52:35,267 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:52:35,267 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:52:35,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-12 12:52:35,472 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:52:35,473 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:52:35,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:52:35,473 INFO L85 PathProgramCache]: Analyzing trace with hash 1132491462, now seen corresponding path program 3 times [2022-12-12 12:52:35,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:52:35,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319931816] [2022-12-12 12:52:35,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:52:35,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:52:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:52:35,597 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 12:52:35,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:52:35,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319931816] [2022-12-12 12:52:35,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319931816] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:52:35,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:52:35,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 12:52:35,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401390057] [2022-12-12 12:52:35,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:52:35,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 12:52:35,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:52:35,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 12:52:35,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 12:52:35,600 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 97 [2022-12-12 12:52:35,600 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 604 transitions, 5087 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:52:35,600 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:52:35,600 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 97 [2022-12-12 12:52:35,600 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:52:36,362 INFO L130 PetriNetUnfolder]: 2483/6566 cut-off events. [2022-12-12 12:52:36,362 INFO L131 PetriNetUnfolder]: For 15228/16751 co-relation queries the response was YES. [2022-12-12 12:52:36,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24378 conditions, 6566 events. 2483/6566 cut-off events. For 15228/16751 co-relation queries the response was YES. Maximal size of possible extension queue 359. Compared 63567 event pairs, 79 based on Foata normal form. 506/6685 useless extension candidates. Maximal degree in co-relation 13598. Up to 1253 conditions per place. [2022-12-12 12:52:36,435 INFO L137 encePairwiseOnDemand]: 92/97 looper letters, 416 selfloop transitions, 5 changer transitions 14/759 dead transitions. [2022-12-12 12:52:36,435 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 759 transitions, 7515 flow [2022-12-12 12:52:36,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 12:52:36,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 12:52:36,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 348 transitions. [2022-12-12 12:52:36,436 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8969072164948454 [2022-12-12 12:52:36,437 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 76 predicate places. [2022-12-12 12:52:36,437 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 759 transitions, 7515 flow [2022-12-12 12:52:36,468 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 759 transitions, 7480 flow, removed 15 selfloop flow, removed 1 redundant places. [2022-12-12 12:52:36,468 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 759 transitions, 7480 flow [2022-12-12 12:52:36,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:52:36,468 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:52:36,469 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:52:36,469 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 12:52:36,469 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:52:36,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:52:36,470 INFO L85 PathProgramCache]: Analyzing trace with hash 1623215128, now seen corresponding path program 1 times [2022-12-12 12:52:36,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:52:36,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739953797] [2022-12-12 12:52:36,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:52:36,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:52:36,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:52:36,791 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 12:52:36,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:52:36,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739953797] [2022-12-12 12:52:36,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739953797] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:52:36,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1307203646] [2022-12-12 12:52:36,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:52:36,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:52:36,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:52:36,794 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) [2022-12-12 12:52:36,796 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-12 12:52:36,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:52:36,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-12 12:52:36,871 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:52:37,030 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 12:52:37,030 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:52:37,150 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 12:52:37,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1307203646] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:52:37,152 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:52:37,152 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-12-12 12:52:37,152 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711394009] [2022-12-12 12:52:37,152 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:52:37,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-12 12:52:37,153 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:52:37,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-12 12:52:37,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-12 12:52:37,154 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2022-12-12 12:52:37,155 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 759 transitions, 7480 flow. Second operand has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2022-12-12 12:52:37,155 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:52:37,155 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2022-12-12 12:52:37,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:52:38,382 INFO L130 PetriNetUnfolder]: 3053/8003 cut-off events. [2022-12-12 12:52:38,382 INFO L131 PetriNetUnfolder]: For 24523/25742 co-relation queries the response was YES. [2022-12-12 12:52:38,408 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31707 conditions, 8003 events. 3053/8003 cut-off events. For 24523/25742 co-relation queries the response was YES. Maximal size of possible extension queue 429. Compared 78899 event pairs, 94 based on Foata normal form. 89/7638 useless extension candidates. Maximal degree in co-relation 24802. Up to 1618 conditions per place. [2022-12-12 12:52:38,454 INFO L137 encePairwiseOnDemand]: 82/97 looper letters, 465 selfloop transitions, 137 changer transitions 22/943 dead transitions. [2022-12-12 12:52:38,454 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 943 transitions, 10983 flow [2022-12-12 12:52:38,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-12 12:52:38,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-12 12:52:38,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1144 transitions. [2022-12-12 12:52:38,455 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.786254295532646 [2022-12-12 12:52:38,456 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 89 predicate places. [2022-12-12 12:52:38,456 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 943 transitions, 10983 flow [2022-12-12 12:52:38,568 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 943 transitions, 10362 flow, removed 302 selfloop flow, removed 4 redundant places. [2022-12-12 12:52:38,569 INFO L495 AbstractCegarLoop]: Abstraction has has 171 places, 943 transitions, 10362 flow [2022-12-12 12:52:38,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2022-12-12 12:52:38,569 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:52:38,570 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:52:38,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-12 12:52:38,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:52:38,770 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:52:38,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:52:38,771 INFO L85 PathProgramCache]: Analyzing trace with hash -1232972750, now seen corresponding path program 2 times [2022-12-12 12:52:38,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:52:38,771 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077128225] [2022-12-12 12:52:38,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:52:38,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:52:38,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:52:39,051 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:52:39,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:52:39,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077128225] [2022-12-12 12:52:39,052 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077128225] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:52:39,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022370189] [2022-12-12 12:52:39,052 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 12:52:39,052 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:52:39,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:52:39,053 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) [2022-12-12 12:52:39,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-12 12:52:39,123 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 12:52:39,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 12:52:39,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 12:52:39,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:52:39,277 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:52:39,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:52:39,389 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:52:39,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022370189] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:52:39,390 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:52:39,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-12-12 12:52:39,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046711699] [2022-12-12 12:52:39,390 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:52:39,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 12:52:39,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:52:39,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 12:52:39,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-12-12 12:52:39,392 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2022-12-12 12:52:39,393 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 943 transitions, 10362 flow. Second operand has 12 states, 12 states have (on average 73.83333333333333) internal successors, (886), 12 states have internal predecessors, (886), 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) [2022-12-12 12:52:39,393 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:52:39,393 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2022-12-12 12:52:39,393 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:52:41,791 INFO L130 PetriNetUnfolder]: 6681/18091 cut-off events. [2022-12-12 12:52:41,791 INFO L131 PetriNetUnfolder]: For 56343/58448 co-relation queries the response was YES. [2022-12-12 12:52:41,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70555 conditions, 18091 events. 6681/18091 cut-off events. For 56343/58448 co-relation queries the response was YES. Maximal size of possible extension queue 661. Compared 193474 event pairs, 345 based on Foata normal form. 262/17391 useless extension candidates. Maximal degree in co-relation 58226. Up to 3811 conditions per place. [2022-12-12 12:52:41,953 INFO L137 encePairwiseOnDemand]: 82/97 looper letters, 710 selfloop transitions, 561 changer transitions 47/1637 dead transitions. [2022-12-12 12:52:41,953 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 1637 transitions, 22203 flow [2022-12-12 12:52:41,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-12 12:52:41,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-12 12:52:41,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1300 transitions. [2022-12-12 12:52:41,956 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7883565797453002 [2022-12-12 12:52:41,956 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 101 predicate places. [2022-12-12 12:52:41,956 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 1637 transitions, 22203 flow [2022-12-12 12:52:42,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 1637 transitions, 20844 flow, removed 672 selfloop flow, removed 4 redundant places. [2022-12-12 12:52:42,063 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 1637 transitions, 20844 flow [2022-12-12 12:52:42,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 73.83333333333333) internal successors, (886), 12 states have internal predecessors, (886), 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) [2022-12-12 12:52:42,064 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:52:42,064 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:52:42,073 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-12 12:52:42,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-12-12 12:52:42,270 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:52:42,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:52:42,271 INFO L85 PathProgramCache]: Analyzing trace with hash -1174278086, now seen corresponding path program 3 times [2022-12-12 12:52:42,271 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:52:42,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822131842] [2022-12-12 12:52:42,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:52:42,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:52:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:52:42,583 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 12:52:42,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:52:42,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822131842] [2022-12-12 12:52:42,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822131842] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:52:42,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1879329527] [2022-12-12 12:52:42,583 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 12:52:42,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:52:42,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:52:42,585 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) [2022-12-12 12:52:42,588 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-12 12:52:42,677 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-12 12:52:42,677 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 12:52:42,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-12 12:52:42,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:52:42,851 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 12:52:42,851 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:52:42,963 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 12:52:42,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1879329527] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:52:42,963 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:52:42,963 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-12-12 12:52:42,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518795470] [2022-12-12 12:52:42,964 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:52:42,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-12 12:52:42,964 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:52:42,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-12 12:52:42,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-12 12:52:42,966 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2022-12-12 12:52:42,966 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 1637 transitions, 20844 flow. Second operand has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2022-12-12 12:52:42,967 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:52:42,967 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2022-12-12 12:52:42,967 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:52:43,741 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([239] L49-->L51: Formula: (= v_~pos~0_18 (+ v_~pos~0_17 1)) InVars {~pos~0=v_~pos~0_18} OutVars{thread1Thread1of1ForFork0_#t~post2=|v_thread1Thread1of1ForFork0_#t~post2_1|, ~pos~0=v_~pos~0_17} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post2, ~pos~0][367], [9#L94-4true, 1808#true, 99#true, 2945#true, 650#(not (= (* (div ~d2~0 256) 256) ~d2~0)), 1806#(= (* 256 (div ~d1~0 256)) ~d1~0), 2375#true, 27#L70true, 147#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), 1206#(and (< (mod ~i2~0 4294967296) (* 2 (mod ~N~0 2147483648))) (< (mod (+ ~i2~0 1) 4294967296) (* 2 (mod ~N~0 2147483648))) (or (< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))) (< (mod (+ 2 ~i2~0) 4294967296) (* 2 (mod ~N~0 2147483648))))), 1256#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), 11#L51true, 126#(or (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (<= ~N~0 (* (div ~N~0 2147483648) 2147483648)))]) [2022-12-12 12:52:43,742 INFO L382 tUnfolder$Statistics]: this new event has 70 ancestors and is cut-off event [2022-12-12 12:52:43,742 INFO L385 tUnfolder$Statistics]: existing Event has 63 ancestors and is cut-off event [2022-12-12 12:52:43,742 INFO L385 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-12-12 12:52:43,742 INFO L385 tUnfolder$Statistics]: existing Event has 63 ancestors and is cut-off event [2022-12-12 12:52:43,742 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([239] L49-->L51: Formula: (= v_~pos~0_18 (+ v_~pos~0_17 1)) InVars {~pos~0=v_~pos~0_18} OutVars{thread1Thread1of1ForFork0_#t~post2=|v_thread1Thread1of1ForFork0_#t~post2_1|, ~pos~0=v_~pos~0_17} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post2, ~pos~0][369], [9#L94-4true, 1808#true, 99#true, 2945#true, 651#(and (<= ~d2~0 (* (div ~d2~0 256) 256)) (<= 0 ~d2~0)), 1806#(= (* 256 (div ~d1~0 256)) ~d1~0), 2375#true, 147#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), 1206#(and (< (mod ~i2~0 4294967296) (* 2 (mod ~N~0 2147483648))) (< (mod (+ ~i2~0 1) 4294967296) (* 2 (mod ~N~0 2147483648))) (or (< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))) (< (mod (+ 2 ~i2~0) 4294967296) (* 2 (mod ~N~0 2147483648))))), 1256#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), 46#L73true, 11#L51true, 126#(or (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (<= ~N~0 (* (div ~N~0 2147483648) 2147483648)))]) [2022-12-12 12:52:43,742 INFO L382 tUnfolder$Statistics]: this new event has 71 ancestors and is cut-off event [2022-12-12 12:52:43,743 INFO L385 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-12-12 12:52:43,743 INFO L385 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-12-12 12:52:43,743 INFO L385 tUnfolder$Statistics]: existing Event has 71 ancestors and is cut-off event [2022-12-12 12:52:47,090 INFO L130 PetriNetUnfolder]: 9455/25860 cut-off events. [2022-12-12 12:52:47,091 INFO L131 PetriNetUnfolder]: For 87861/90652 co-relation queries the response was YES. [2022-12-12 12:52:47,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101503 conditions, 25860 events. 9455/25860 cut-off events. For 87861/90652 co-relation queries the response was YES. Maximal size of possible extension queue 913. Compared 291735 event pairs, 510 based on Foata normal form. 278/24774 useless extension candidates. Maximal degree in co-relation 67897. Up to 5082 conditions per place. [2022-12-12 12:52:47,284 INFO L137 encePairwiseOnDemand]: 82/97 looper letters, 1444 selfloop transitions, 363 changer transitions 65/2191 dead transitions. [2022-12-12 12:52:47,284 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 2191 transitions, 31839 flow [2022-12-12 12:52:47,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-12 12:52:47,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-12 12:52:47,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1145 transitions. [2022-12-12 12:52:47,286 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7869415807560137 [2022-12-12 12:52:47,287 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 111 predicate places. [2022-12-12 12:52:47,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 2191 transitions, 31839 flow [2022-12-12 12:52:47,483 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 2191 transitions, 30796 flow, removed 514 selfloop flow, removed 4 redundant places. [2022-12-12 12:52:47,483 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 2191 transitions, 30796 flow [2022-12-12 12:52:47,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2022-12-12 12:52:47,483 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:52:47,484 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:52:47,488 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-12 12:52:47,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:52:47,685 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:52:47,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:52:47,686 INFO L85 PathProgramCache]: Analyzing trace with hash 826067074, now seen corresponding path program 4 times [2022-12-12 12:52:47,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:52:47,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956354691] [2022-12-12 12:52:47,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:52:47,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:52:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:52:47,964 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:52:47,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:52:47,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956354691] [2022-12-12 12:52:47,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956354691] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:52:47,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [493745714] [2022-12-12 12:52:47,965 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 12:52:47,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:52:47,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:52:47,968 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) [2022-12-12 12:52:47,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 12:52:48,034 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 12:52:48,034 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 12:52:48,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-12 12:52:48,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:52:48,186 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:52:48,187 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:52:48,289 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:52:48,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [493745714] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:52:48,289 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:52:48,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-12-12 12:52:48,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353532973] [2022-12-12 12:52:48,290 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:52:48,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 12:52:48,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:52:48,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 12:52:48,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-12-12 12:52:48,291 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2022-12-12 12:52:48,292 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 2191 transitions, 30796 flow. Second operand has 12 states, 12 states have (on average 73.83333333333333) internal successors, (886), 12 states have internal predecessors, (886), 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) [2022-12-12 12:52:48,292 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:52:48,292 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2022-12-12 12:52:48,292 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:52:55,526 INFO L130 PetriNetUnfolder]: 12921/35635 cut-off events. [2022-12-12 12:52:55,526 INFO L131 PetriNetUnfolder]: For 147374/151436 co-relation queries the response was YES. [2022-12-12 12:52:55,612 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144363 conditions, 35635 events. 12921/35635 cut-off events. For 147374/151436 co-relation queries the response was YES. Maximal size of possible extension queue 1148. Compared 418477 event pairs, 729 based on Foata normal form. 539/34310 useless extension candidates. Maximal degree in co-relation 97629. Up to 7338 conditions per place. [2022-12-12 12:52:55,768 INFO L137 encePairwiseOnDemand]: 82/97 looper letters, 1702 selfloop transitions, 760 changer transitions 84/2865 dead transitions. [2022-12-12 12:52:55,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 2865 transitions, 46042 flow [2022-12-12 12:52:55,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-12 12:52:55,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-12 12:52:55,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1301 transitions. [2022-12-12 12:52:55,771 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7889630078835658 [2022-12-12 12:52:55,771 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 123 predicate places. [2022-12-12 12:52:55,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 2865 transitions, 46042 flow [2022-12-12 12:52:56,040 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 2865 transitions, 41895 flow, removed 2066 selfloop flow, removed 4 redundant places. [2022-12-12 12:52:56,040 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 2865 transitions, 41895 flow [2022-12-12 12:52:56,040 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 73.83333333333333) internal successors, (886), 12 states have internal predecessors, (886), 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) [2022-12-12 12:52:56,040 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:52:56,041 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:52:56,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-12 12:52:56,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:52:56,243 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:52:56,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:52:56,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1591327972, now seen corresponding path program 1 times [2022-12-12 12:52:56,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:52:56,245 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35837771] [2022-12-12 12:52:56,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:52:56,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:52:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:52:56,340 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-12 12:52:56,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:52:56,340 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35837771] [2022-12-12 12:52:56,341 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35837771] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:52:56,341 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:52:56,341 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 12:52:56,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [556292668] [2022-12-12 12:52:56,341 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:52:56,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 12:52:56,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:52:56,342 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 12:52:56,342 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 12:52:56,342 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 97 [2022-12-12 12:52:56,343 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 2865 transitions, 41895 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:52:56,343 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:52:56,343 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 97 [2022-12-12 12:52:56,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:53:01,939 INFO L130 PetriNetUnfolder]: 8129/22878 cut-off events. [2022-12-12 12:53:01,939 INFO L131 PetriNetUnfolder]: For 96849/100340 co-relation queries the response was YES. [2022-12-12 12:53:02,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93891 conditions, 22878 events. 8129/22878 cut-off events. For 96849/100340 co-relation queries the response was YES. Maximal size of possible extension queue 928. Compared 268780 event pairs, 241 based on Foata normal form. 551/22790 useless extension candidates. Maximal degree in co-relation 56736. Up to 4499 conditions per place. [2022-12-12 12:53:02,118 INFO L137 encePairwiseOnDemand]: 93/97 looper letters, 1925 selfloop transitions, 7 changer transitions 60/2381 dead transitions. [2022-12-12 12:53:02,118 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 208 places, 2381 transitions, 37436 flow [2022-12-12 12:53:02,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 12:53:02,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 12:53:02,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 348 transitions. [2022-12-12 12:53:02,120 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8969072164948454 [2022-12-12 12:53:02,120 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 122 predicate places. [2022-12-12 12:53:02,121 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 208 places, 2381 transitions, 37436 flow [2022-12-12 12:53:02,250 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 2381 transitions, 37276 flow, removed 80 selfloop flow, removed 0 redundant places. [2022-12-12 12:53:02,250 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 2381 transitions, 37276 flow [2022-12-12 12:53:02,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:53:02,251 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:53:02,251 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:53:02,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-12 12:53:02,251 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:53:02,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:53:02,251 INFO L85 PathProgramCache]: Analyzing trace with hash -711798294, now seen corresponding path program 5 times [2022-12-12 12:53:02,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:53:02,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939373553] [2022-12-12 12:53:02,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:53:02,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:53:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:53:02,490 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 12:53:02,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:53:02,491 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939373553] [2022-12-12 12:53:02,491 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939373553] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:53:02,492 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [860977263] [2022-12-12 12:53:02,492 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 12:53:02,492 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:53:02,492 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:53:02,493 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) [2022-12-12 12:53:02,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-12 12:53:02,576 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-12 12:53:02,576 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 12:53:02,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-12 12:53:02,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:53:02,745 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 12:53:02,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:53:02,861 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 12:53:02,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [860977263] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:53:02,862 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:53:02,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-12-12 12:53:02,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280594837] [2022-12-12 12:53:02,863 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:53:02,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-12 12:53:02,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:53:02,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-12 12:53:02,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-12-12 12:53:02,865 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2022-12-12 12:53:02,866 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 2381 transitions, 37276 flow. Second operand has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2022-12-12 12:53:02,866 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:53:02,866 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2022-12-12 12:53:02,866 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:53:07,866 INFO L130 PetriNetUnfolder]: 8494/23961 cut-off events. [2022-12-12 12:53:07,867 INFO L131 PetriNetUnfolder]: For 130430/134590 co-relation queries the response was YES. [2022-12-12 12:53:07,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103473 conditions, 23961 events. 8494/23961 cut-off events. For 130430/134590 co-relation queries the response was YES. Maximal size of possible extension queue 983. Compared 283965 event pairs, 240 based on Foata normal form. 355/23647 useless extension candidates. Maximal degree in co-relation 54874. Up to 4902 conditions per place. [2022-12-12 12:53:08,025 INFO L137 encePairwiseOnDemand]: 82/97 looper letters, 1970 selfloop transitions, 135 changer transitions 68/2495 dead transitions. [2022-12-12 12:53:08,026 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 2495 transitions, 43430 flow [2022-12-12 12:53:08,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-12 12:53:08,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-12 12:53:08,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1142 transitions. [2022-12-12 12:53:08,027 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7848797250859106 [2022-12-12 12:53:08,028 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 136 predicate places. [2022-12-12 12:53:08,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 2495 transitions, 43430 flow [2022-12-12 12:53:08,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 2495 transitions, 42150 flow, removed 617 selfloop flow, removed 5 redundant places. [2022-12-12 12:53:08,219 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 2495 transitions, 42150 flow [2022-12-12 12:53:08,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 74.0) internal successors, (814), 11 states have internal predecessors, (814), 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) [2022-12-12 12:53:08,219 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:53:08,220 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:53:08,228 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-12-12 12:53:08,424 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,SelfDestructingSolverStorable15 [2022-12-12 12:53:08,425 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:53:08,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:53:08,425 INFO L85 PathProgramCache]: Analyzing trace with hash -1773095920, now seen corresponding path program 6 times [2022-12-12 12:53:08,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:53:08,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722807128] [2022-12-12 12:53:08,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:53:08,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:53:08,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:53:08,682 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:53:08,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:53:08,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722807128] [2022-12-12 12:53:08,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722807128] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:53:08,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1415443821] [2022-12-12 12:53:08,683 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 12:53:08,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:53:08,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:53:08,684 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) [2022-12-12 12:53:08,687 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 12:53:08,770 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-12-12 12:53:08,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 12:53:08,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-12 12:53:08,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:53:08,914 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:53:08,915 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:53:09,011 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:53:09,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1415443821] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:53:09,012 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:53:09,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-12-12 12:53:09,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503335715] [2022-12-12 12:53:09,012 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:53:09,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 12:53:09,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:53:09,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 12:53:09,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-12-12 12:53:09,013 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2022-12-12 12:53:09,014 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 2495 transitions, 42150 flow. Second operand has 12 states, 12 states have (on average 73.83333333333333) internal successors, (886), 12 states have internal predecessors, (886), 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) [2022-12-12 12:53:09,014 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:53:09,014 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2022-12-12 12:53:09,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:53:15,825 INFO L130 PetriNetUnfolder]: 11202/31906 cut-off events. [2022-12-12 12:53:15,825 INFO L131 PetriNetUnfolder]: For 212226/218198 co-relation queries the response was YES. [2022-12-12 12:53:15,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142910 conditions, 31906 events. 11202/31906 cut-off events. For 212226/218198 co-relation queries the response was YES. Maximal size of possible extension queue 1311. Compared 394914 event pairs, 366 based on Foata normal form. 934/31954 useless extension candidates. Maximal degree in co-relation 65328. Up to 6481 conditions per place. [2022-12-12 12:53:16,059 INFO L137 encePairwiseOnDemand]: 82/97 looper letters, 1952 selfloop transitions, 875 changer transitions 95/3244 dead transitions. [2022-12-12 12:53:16,059 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 3244 transitions, 62415 flow [2022-12-12 12:53:16,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-12 12:53:16,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-12 12:53:16,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1301 transitions. [2022-12-12 12:53:16,060 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7889630078835658 [2022-12-12 12:53:16,061 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 147 predicate places. [2022-12-12 12:53:16,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 3244 transitions, 62415 flow [2022-12-12 12:53:16,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 228 places, 3244 transitions, 57386 flow, removed 2442 selfloop flow, removed 5 redundant places. [2022-12-12 12:53:16,306 INFO L495 AbstractCegarLoop]: Abstraction has has 228 places, 3244 transitions, 57386 flow [2022-12-12 12:53:16,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 73.83333333333333) internal successors, (886), 12 states have internal predecessors, (886), 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) [2022-12-12 12:53:16,306 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:53:16,306 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:53:16,311 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-12 12:53:16,511 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,SelfDestructingSolverStorable16 [2022-12-12 12:53:16,512 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:53:16,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:53:16,512 INFO L85 PathProgramCache]: Analyzing trace with hash 699724684, now seen corresponding path program 7 times [2022-12-12 12:53:16,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:53:16,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356451565] [2022-12-12 12:53:16,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:53:16,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:53:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:53:16,768 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:53:16,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:53:16,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356451565] [2022-12-12 12:53:16,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356451565] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:53:16,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1755386676] [2022-12-12 12:53:16,769 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 12:53:16,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:53:16,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:53:16,770 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) [2022-12-12 12:53:16,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-12 12:53:16,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:53:16,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-12 12:53:16,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:53:17,186 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:53:17,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:53:17,300 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:53:17,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1755386676] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:53:17,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:53:17,301 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-12-12 12:53:17,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986745895] [2022-12-12 12:53:17,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:53:17,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 12:53:17,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:53:17,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 12:53:17,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-12-12 12:53:17,303 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 97 [2022-12-12 12:53:17,304 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 3244 transitions, 57386 flow. Second operand has 12 states, 12 states have (on average 73.83333333333333) internal successors, (886), 12 states have internal predecessors, (886), 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) [2022-12-12 12:53:17,304 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:53:17,304 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 97 [2022-12-12 12:53:17,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:53:26,043 INFO L130 PetriNetUnfolder]: 12188/34755 cut-off events. [2022-12-12 12:53:26,044 INFO L131 PetriNetUnfolder]: For 242399/248933 co-relation queries the response was YES. [2022-12-12 12:53:26,139 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156670 conditions, 34755 events. 12188/34755 cut-off events. For 242399/248933 co-relation queries the response was YES. Maximal size of possible extension queue 1416. Compared 436559 event pairs, 403 based on Foata normal form. 678/34463 useless extension candidates. Maximal degree in co-relation 66330. Up to 7156 conditions per place. [2022-12-12 12:53:26,256 INFO L137 encePairwiseOnDemand]: 82/97 looper letters, 2757 selfloop transitions, 366 changer transitions 116/3561 dead transitions. [2022-12-12 12:53:26,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 3561 transitions, 69708 flow [2022-12-12 12:53:26,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-12 12:53:26,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-12-12 12:53:26,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1296 transitions. [2022-12-12 12:53:26,258 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.7859308671922377 [2022-12-12 12:53:26,258 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 158 predicate places. [2022-12-12 12:53:26,259 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 3561 transitions, 69708 flow [2022-12-12 12:53:26,583 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 240 places, 3561 transitions, 67477 flow, removed 1107 selfloop flow, removed 4 redundant places. [2022-12-12 12:53:26,583 INFO L495 AbstractCegarLoop]: Abstraction has has 240 places, 3561 transitions, 67477 flow [2022-12-12 12:53:26,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 73.83333333333333) internal successors, (886), 12 states have internal predecessors, (886), 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) [2022-12-12 12:53:26,584 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:53:26,584 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:53:26,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-12-12 12:53:26,792 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,SelfDestructingSolverStorable17 [2022-12-12 12:53:26,792 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:53:26,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:53:26,792 INFO L85 PathProgramCache]: Analyzing trace with hash 464641884, now seen corresponding path program 1 times [2022-12-12 12:53:26,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:53:26,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8055559] [2022-12-12 12:53:26,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:53:26,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:53:26,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:53:26,893 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-12-12 12:53:26,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:53:26,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8055559] [2022-12-12 12:53:26,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8055559] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 12:53:26,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 12:53:26,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 12:53:26,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528371177] [2022-12-12 12:53:26,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 12:53:26,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 12:53:26,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:53:26,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 12:53:26,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 12:53:26,896 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 97 [2022-12-12 12:53:26,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 240 places, 3561 transitions, 67477 flow. Second operand has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:53:26,896 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:53:26,896 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 97 [2022-12-12 12:53:26,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:53:32,491 INFO L130 PetriNetUnfolder]: 6066/17409 cut-off events. [2022-12-12 12:53:32,492 INFO L131 PetriNetUnfolder]: For 134901/139392 co-relation queries the response was YES. [2022-12-12 12:53:32,540 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81925 conditions, 17409 events. 6066/17409 cut-off events. For 134901/139392 co-relation queries the response was YES. Maximal size of possible extension queue 703. Compared 197927 event pairs, 180 based on Foata normal form. 500/17487 useless extension candidates. Maximal degree in co-relation 23062. Up to 3294 conditions per place. [2022-12-12 12:53:32,604 INFO L137 encePairwiseOnDemand]: 93/97 looper letters, 1526 selfloop transitions, 7 changer transitions 95/2083 dead transitions. [2022-12-12 12:53:32,605 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 243 places, 2083 transitions, 40310 flow [2022-12-12 12:53:32,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 12:53:32,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 12:53:32,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 347 transitions. [2022-12-12 12:53:32,605 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.8943298969072165 [2022-12-12 12:53:32,606 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 157 predicate places. [2022-12-12 12:53:32,606 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 243 places, 2083 transitions, 40310 flow [2022-12-12 12:53:32,705 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 2083 transitions, 39678 flow, removed 316 selfloop flow, removed 0 redundant places. [2022-12-12 12:53:32,705 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 2083 transitions, 39678 flow [2022-12-12 12:53:32,705 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.0) internal successors, (336), 4 states have internal predecessors, (336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-12 12:53:32,705 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:53:32,706 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:53:32,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-12 12:53:32,706 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:53:32,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:53:32,706 INFO L85 PathProgramCache]: Analyzing trace with hash 510244649, now seen corresponding path program 8 times [2022-12-12 12:53:32,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:53:32,706 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883154125] [2022-12-12 12:53:32,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:53:32,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:53:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:53:33,284 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:53:33,285 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:53:33,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883154125] [2022-12-12 12:53:33,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883154125] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:53:33,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357917178] [2022-12-12 12:53:33,285 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 12:53:33,285 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:53:33,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:53:33,288 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) [2022-12-12 12:53:33,324 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-12 12:53:33,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 12:53:33,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 12:53:33,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-12 12:53:33,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:53:34,505 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:53:34,506 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:53:46,020 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2022-12-12 12:53:46,259 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:53:46,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357917178] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:53:46,259 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:53:46,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 16] total 42 [2022-12-12 12:53:46,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118105450] [2022-12-12 12:53:46,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:53:46,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-12-12 12:53:46,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:53:46,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-12-12 12:53:46,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=238, Invalid=1484, Unknown=0, NotChecked=0, Total=1722 [2022-12-12 12:53:46,263 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 97 [2022-12-12 12:53:46,265 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 243 places, 2083 transitions, 39678 flow. Second operand has 42 states, 42 states have (on average 62.54761904761905) internal successors, (2627), 42 states have internal predecessors, (2627), 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) [2022-12-12 12:53:46,265 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:53:46,265 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 97 [2022-12-12 12:53:46,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:54:12,251 INFO L130 PetriNetUnfolder]: 9427/27655 cut-off events. [2022-12-12 12:54:12,251 INFO L131 PetriNetUnfolder]: For 272489/281038 co-relation queries the response was YES. [2022-12-12 12:54:12,340 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149336 conditions, 27655 events. 9427/27655 cut-off events. For 272489/281038 co-relation queries the response was YES. Maximal size of possible extension queue 1286. Compared 347121 event pairs, 266 based on Foata normal form. 1337/28411 useless extension candidates. Maximal degree in co-relation 52673. Up to 6764 conditions per place. [2022-12-12 12:54:12,452 INFO L137 encePairwiseOnDemand]: 76/97 looper letters, 3474 selfloop transitions, 194 changer transitions 179/3958 dead transitions. [2022-12-12 12:54:12,453 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 3958 transitions, 86329 flow [2022-12-12 12:54:12,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-12-12 12:54:12,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2022-12-12 12:54:12,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 4379 transitions. [2022-12-12 12:54:12,457 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6638872043662826 [2022-12-12 12:54:12,457 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 224 predicate places. [2022-12-12 12:54:12,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 3958 transitions, 86329 flow [2022-12-12 12:54:12,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 3958 transitions, 80614 flow, removed 2767 selfloop flow, removed 19 redundant places. [2022-12-12 12:54:12,698 INFO L495 AbstractCegarLoop]: Abstraction has has 291 places, 3958 transitions, 80614 flow [2022-12-12 12:54:12,698 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 42 states have (on average 62.54761904761905) internal successors, (2627), 42 states have internal predecessors, (2627), 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) [2022-12-12 12:54:12,698 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:54:12,698 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:54:12,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-12 12:54:12,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:54:12,899 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:54:12,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:54:12,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1060311837, now seen corresponding path program 9 times [2022-12-12 12:54:12,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:54:12,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35784018] [2022-12-12 12:54:12,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:54:12,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:54:12,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:54:13,639 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:54:13,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:54:13,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35784018] [2022-12-12 12:54:13,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35784018] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:54:13,640 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [524891177] [2022-12-12 12:54:13,640 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 12:54:13,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:54:13,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:54:13,644 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) [2022-12-12 12:54:13,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-12-12 12:54:14,037 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-12 12:54:14,037 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 12:54:14,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 12:54:14,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:54:14,527 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:54:14,528 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:54:15,382 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 4 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:54:15,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [524891177] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:54:15,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:54:15,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 36 [2022-12-12 12:54:15,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627251878] [2022-12-12 12:54:15,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:54:15,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-12 12:54:15,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:54:15,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-12 12:54:15,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=120, Invalid=1140, Unknown=0, NotChecked=0, Total=1260 [2022-12-12 12:54:15,385 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 97 [2022-12-12 12:54:15,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 291 places, 3958 transitions, 80614 flow. Second operand has 36 states, 36 states have (on average 62.861111111111114) internal successors, (2263), 36 states have internal predecessors, (2263), 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) [2022-12-12 12:54:15,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:54:15,387 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 97 [2022-12-12 12:54:15,387 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:55:18,661 INFO L130 PetriNetUnfolder]: 25353/69747 cut-off events. [2022-12-12 12:55:18,662 INFO L131 PetriNetUnfolder]: For 728684/748753 co-relation queries the response was YES. [2022-12-12 12:55:18,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 408108 conditions, 69747 events. 25353/69747 cut-off events. For 728684/748753 co-relation queries the response was YES. Maximal size of possible extension queue 2259. Compared 917782 event pairs, 558 based on Foata normal form. 3225/72598 useless extension candidates. Maximal degree in co-relation 184205. Up to 18806 conditions per place. [2022-12-12 12:55:19,338 INFO L137 encePairwiseOnDemand]: 74/97 looper letters, 9033 selfloop transitions, 1024 changer transitions 445/10613 dead transitions. [2022-12-12 12:55:19,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 10613 transitions, 235262 flow [2022-12-12 12:55:19,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2022-12-12 12:55:19,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2022-12-12 12:55:19,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 10151 transitions. [2022-12-12 12:55:19,347 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6665572263444743 [2022-12-12 12:55:19,347 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 361 predicate places. [2022-12-12 12:55:19,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 10613 transitions, 235262 flow [2022-12-12 12:55:19,995 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 430 places, 10613 transitions, 227676 flow, removed 3741 selfloop flow, removed 17 redundant places. [2022-12-12 12:55:19,995 INFO L495 AbstractCegarLoop]: Abstraction has has 430 places, 10613 transitions, 227676 flow [2022-12-12 12:55:19,996 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 62.861111111111114) internal successors, (2263), 36 states have internal predecessors, (2263), 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) [2022-12-12 12:55:19,996 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:55:19,996 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:55:20,005 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-12-12 12:55:20,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-12 12:55:20,202 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:55:20,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:55:20,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1637035726, now seen corresponding path program 10 times [2022-12-12 12:55:20,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:55:20,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508899082] [2022-12-12 12:55:20,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:55:20,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:55:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:55:20,585 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:55:20,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:55:20,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508899082] [2022-12-12 12:55:20,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508899082] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:55:20,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072273987] [2022-12-12 12:55:20,586 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 12:55:20,586 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:55:20,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:55:20,588 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 12:55:20,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-12-12 12:55:20,718 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 12:55:20,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 12:55:20,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 206 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-12 12:55:20,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:55:21,360 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:55:21,360 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:55:26,065 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:55:26,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072273987] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:55:26,065 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:55:26,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 37 [2022-12-12 12:55:26,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [318362790] [2022-12-12 12:55:26,066 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:55:26,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-12-12 12:55:26,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:55:26,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-12-12 12:55:26,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1191, Unknown=1, NotChecked=0, Total=1332 [2022-12-12 12:55:26,070 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 97 [2022-12-12 12:55:26,072 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 430 places, 10613 transitions, 227676 flow. Second operand has 37 states, 37 states have (on average 62.486486486486484) internal successors, (2312), 37 states have internal predecessors, (2312), 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) [2022-12-12 12:55:26,072 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:55:26,072 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 97 [2022-12-12 12:55:26,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:57:27,289 INFO L130 PetriNetUnfolder]: 25445/70058 cut-off events. [2022-12-12 12:57:27,289 INFO L131 PetriNetUnfolder]: For 821753/843141 co-relation queries the response was YES. [2022-12-12 12:57:27,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 439844 conditions, 70058 events. 25445/70058 cut-off events. For 821753/843141 co-relation queries the response was YES. Maximal size of possible extension queue 2260. Compared 924104 event pairs, 575 based on Foata normal form. 661/70344 useless extension candidates. Maximal degree in co-relation 198037. Up to 42635 conditions per place. [2022-12-12 12:57:27,816 INFO L137 encePairwiseOnDemand]: 77/97 looper letters, 9872 selfloop transitions, 139 changer transitions 650/10772 dead transitions. [2022-12-12 12:57:27,816 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 460 places, 10772 transitions, 252746 flow [2022-12-12 12:57:27,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-12 12:57:27,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2022-12-12 12:57:27,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 2015 transitions. [2022-12-12 12:57:27,818 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6701030927835051 [2022-12-12 12:57:27,819 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 374 predicate places. [2022-12-12 12:57:27,819 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 460 places, 10772 transitions, 252746 flow [2022-12-12 12:57:28,640 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 444 places, 10772 transitions, 236481 flow, removed 8077 selfloop flow, removed 16 redundant places. [2022-12-12 12:57:28,640 INFO L495 AbstractCegarLoop]: Abstraction has has 444 places, 10772 transitions, 236481 flow [2022-12-12 12:57:28,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 62.486486486486484) internal successors, (2312), 37 states have internal predecessors, (2312), 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) [2022-12-12 12:57:28,641 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 12:57:28,641 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 12:57:28,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-12-12 12:57:28,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-12-12 12:57:28,842 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 12:57:28,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 12:57:28,842 INFO L85 PathProgramCache]: Analyzing trace with hash 685435454, now seen corresponding path program 11 times [2022-12-12 12:57:28,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 12:57:28,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759284128] [2022-12-12 12:57:28,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 12:57:28,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 12:57:28,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 12:57:29,523 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 12:57:29,523 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 12:57:29,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759284128] [2022-12-12 12:57:29,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759284128] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 12:57:29,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2013069741] [2022-12-12 12:57:29,524 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 12:57:29,524 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 12:57:29,524 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 12:57:29,525 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 12:57:29,527 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-12-12 12:57:29,641 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-12 12:57:29,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 12:57:29,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 20 conjunts are in the unsatisfiable core [2022-12-12 12:57:29,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 12:57:30,748 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 12:57:30,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 12:57:31,976 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 29 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 12:57:31,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2013069741] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 12:57:31,977 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 12:57:31,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 13, 13] total 40 [2022-12-12 12:57:31,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340905509] [2022-12-12 12:57:31,977 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 12:57:31,978 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-12-12 12:57:31,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 12:57:31,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-12-12 12:57:31,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=1387, Unknown=0, NotChecked=0, Total=1560 [2022-12-12 12:57:31,979 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 97 [2022-12-12 12:57:31,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 444 places, 10772 transitions, 236481 flow. Second operand has 40 states, 40 states have (on average 62.6) internal successors, (2504), 40 states have internal predecessors, (2504), 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) [2022-12-12 12:57:31,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 12:57:31,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 97 [2022-12-12 12:57:31,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 12:58:31,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-12-12 13:01:03,445 INFO L130 PetriNetUnfolder]: 42264/114594 cut-off events. [2022-12-12 13:01:03,445 INFO L131 PetriNetUnfolder]: For 1457863/1494864 co-relation queries the response was YES. [2022-12-12 13:01:03,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 772403 conditions, 114594 events. 42264/114594 cut-off events. For 1457863/1494864 co-relation queries the response was YES. Maximal size of possible extension queue 3047. Compared 1565376 event pairs, 750 based on Foata normal form. 4272/118250 useless extension candidates. Maximal degree in co-relation 349708. Up to 34641 conditions per place. [2022-12-12 13:01:04,540 INFO L137 encePairwiseOnDemand]: 77/97 looper letters, 16650 selfloop transitions, 1462 changer transitions 1474/19697 dead transitions. [2022-12-12 13:01:04,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 522 places, 19697 transitions, 484183 flow [2022-12-12 13:01:04,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-12-12 13:01:04,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2022-12-12 13:01:04,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 5223 transitions. [2022-12-12 13:01:04,546 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6815868458828135 [2022-12-12 13:01:04,547 INFO L295 CegarLoopForPetriNet]: 86 programPoint places, 436 predicate places. [2022-12-12 13:01:04,547 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 522 places, 19697 transitions, 484183 flow [2022-12-12 13:01:06,394 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 495 places, 19697 transitions, 463780 flow, removed 10103 selfloop flow, removed 27 redundant places. [2022-12-12 13:01:06,394 INFO L495 AbstractCegarLoop]: Abstraction has has 495 places, 19697 transitions, 463780 flow [2022-12-12 13:01:06,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 62.6) internal successors, (2504), 40 states have internal predecessors, (2504), 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) [2022-12-12 13:01:06,395 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 13:01:06,395 INFO L214 CegarLoopForPetriNet]: trace histogram [7, 7, 7, 7, 7, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 13:01:06,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-12-12 13:01:06,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:01:06,596 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 13:01:06,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 13:01:06,596 INFO L85 PathProgramCache]: Analyzing trace with hash -413860929, now seen corresponding path program 12 times [2022-12-12 13:01:06,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 13:01:06,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246957465] [2022-12-12 13:01:06,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 13:01:06,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 13:01:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 13:01:07,165 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 81 proven. 50 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-12 13:01:07,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 13:01:07,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246957465] [2022-12-12 13:01:07,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246957465] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 13:01:07,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1704655944] [2022-12-12 13:01:07,165 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 13:01:07,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:01:07,166 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 13:01:07,167 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 13:01:07,168 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-12-12 13:01:07,525 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 6 check-sat command(s) [2022-12-12 13:01:07,525 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 13:01:07,527 INFO L263 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-12 13:01:07,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 13:01:08,530 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 73 proven. 19 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-12-12 13:01:08,530 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 13:01:19,111 INFO L208 tifierPushTermWalker]: Run 10 iterations without descend maybe there is a nontermination bug. [2022-12-12 13:01:19,252 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 73 proven. 19 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-12-12 13:01:19,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1704655944] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 13:01:19,253 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 13:01:19,253 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 15, 16] total 42 [2022-12-12 13:01:19,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1975179294] [2022-12-12 13:01:19,253 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 13:01:19,253 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-12-12 13:01:19,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 13:01:19,254 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-12-12 13:01:19,254 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=1502, Unknown=0, NotChecked=0, Total=1722 [2022-12-12 13:01:19,256 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 97 [2022-12-12 13:01:19,258 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 495 places, 19697 transitions, 463780 flow. Second operand has 42 states, 42 states have (on average 62.404761904761905) internal successors, (2621), 42 states have internal predecessors, (2621), 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) [2022-12-12 13:01:19,258 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 13:01:19,258 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 97 [2022-12-12 13:01:19,258 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 13:01:51,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] Received shutdown request... [2022-12-12 13:05:59,374 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 13:05:59,375 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 [2022-12-12 13:05:59,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 153 states. [2022-12-12 13:05:59,394 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 13:05:59,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-12-12 13:05:59,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 13:05:59,595 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantifier-free) to 181 known predicates. [2022-12-12 13:05:59,597 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 13:05:59,597 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 13:05:59,597 INFO L445 BasicCegarLoop]: Path program histogram: [12, 3, 2, 2, 2, 1, 1, 1] [2022-12-12 13:05:59,600 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 13:05:59,600 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 13:05:59,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 01:05:59 BasicIcfg [2022-12-12 13:05:59,603 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 13:05:59,604 INFO L158 Benchmark]: Toolchain (without parser) took 819428.16ms. Allocated memory was 198.2MB in the beginning and 4.8GB in the end (delta: 4.6GB). Free memory was 173.7MB in the beginning and 2.4GB in the end (delta: -2.2GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2022-12-12 13:05:59,604 INFO L158 Benchmark]: CDTParser took 0.13ms. Allocated memory is still 198.2MB. Free memory was 174.0MB in the beginning and 173.9MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 13:05:59,604 INFO L158 Benchmark]: CACSL2BoogieTranslator took 278.32ms. Allocated memory is still 198.2MB. Free memory was 173.2MB in the beginning and 161.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-12-12 13:05:59,604 INFO L158 Benchmark]: Boogie Procedure Inliner took 42.41ms. Allocated memory is still 198.2MB. Free memory was 161.7MB in the beginning and 160.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 13:05:59,604 INFO L158 Benchmark]: Boogie Preprocessor took 33.90ms. Allocated memory is still 198.2MB. Free memory was 160.1MB in the beginning and 158.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 13:05:59,605 INFO L158 Benchmark]: RCFGBuilder took 436.99ms. Allocated memory is still 198.2MB. Free memory was 158.5MB in the beginning and 144.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-12 13:05:59,605 INFO L158 Benchmark]: TraceAbstraction took 818629.99ms. Allocated memory was 198.2MB in the beginning and 4.8GB in the end (delta: 4.6GB). Free memory was 142.8MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. [2022-12-12 13:05:59,606 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13ms. Allocated memory is still 198.2MB. Free memory was 174.0MB in the beginning and 173.9MB in the end (delta: 157.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 278.32ms. Allocated memory is still 198.2MB. Free memory was 173.2MB in the beginning and 161.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 42.41ms. Allocated memory is still 198.2MB. Free memory was 161.7MB in the beginning and 160.1MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.90ms. Allocated memory is still 198.2MB. Free memory was 160.1MB in the beginning and 158.5MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 436.99ms. Allocated memory is still 198.2MB. Free memory was 158.5MB in the beginning and 144.4MB in the end (delta: 14.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 818629.99ms. Allocated memory was 198.2MB in the beginning and 4.8GB in the end (delta: 4.6GB). Free memory was 142.8MB in the beginning and 2.4GB in the end (delta: -2.3GB). Peak memory consumption was 2.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 181 known predicates. - TimeoutResultAtElement [Line: 94]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 181 known predicates. - TimeoutResultAtElement [Line: 93]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantifier-free) to 181 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 114 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 5.4s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 818.5s, OverallIterations: 24, TraceHistogramMax: 7, PathProgramHistogramMax: 12, EmptinessCheckTime: 0.0s, AutomataDifference: 761.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 6464 SdHoareTripleChecker+Valid, 43.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6464 mSDsluCounter, 4633 SdHoareTripleChecker+Invalid, 40.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4135 mSDsCounter, 737 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 18392 IncrementalHoareTripleChecker+Invalid, 19130 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 737 mSolverCounterUnsat, 498 mSDtfsCounter, 18392 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3580 GetRequests, 2647 SyntacticMatches, 20 SemanticMatches, 912 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29999 ImplicationChecksByTransitivity, 161.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=463780occurred in iteration=23, InterpolantAutomatonStates: 591, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 5.4s AutomataMinimizationTime, 23 MinimizatonAttempts, 68700 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 45.5s InterpolantComputationTime, 3500 NumberOfCodeBlocks, 3500 NumberOfCodeBlocksAsserted, 60 NumberOfCheckSat, 4846 ConstructedInterpolants, 0 QuantifiedInterpolants, 40944 SizeOfPredicates, 183 NumberOfNonLiveVariables, 2985 ConjunctsInSsa, 284 ConjunctsInUnsatCore, 54 InterpolantComputations, 9 PerfectInterpolantSequences, 540/1271 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