/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-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 23:33:27,961 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 23:33:27,962 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 23:33:27,985 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 23:33:27,985 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 23:33:27,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 23:33:27,989 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 23:33:27,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 23:33:27,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 23:33:27,999 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 23:33:28,000 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 23:33:28,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 23:33:28,001 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 23:33:28,003 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 23:33:28,003 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 23:33:28,004 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 23:33:28,005 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 23:33:28,005 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 23:33:28,009 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 23:33:28,012 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 23:33:28,013 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 23:33:28,014 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 23:33:28,014 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 23:33:28,015 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 23:33:28,020 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 23:33:28,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 23:33:28,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 23:33:28,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 23:33:28,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 23:33:28,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 23:33:28,022 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 23:33:28,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 23:33:28,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 23:33:28,025 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 23:33:28,025 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 23:33:28,025 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 23:33:28,025 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 23:33:28,026 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 23:33:28,026 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 23:33:28,026 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 23:33:28,027 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 23:33:28,027 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-SemanticLbe.epf [2022-12-12 23:33:28,051 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 23:33:28,052 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 23:33:28,053 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 23:33:28,053 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 23:33:28,053 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 23:33:28,054 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 23:33:28,054 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 23:33:28,054 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 23:33:28,054 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 23:33:28,054 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 23:33:28,055 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 23:33:28,055 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 23:33:28,055 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 23:33:28,055 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 23:33:28,055 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 23:33:28,055 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 23:33:28,055 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 23:33:28,056 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 23:33:28,056 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 23:33:28,056 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 23:33:28,056 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 23:33:28,056 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 23:33:28,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 23:33:28,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 23:33:28,056 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 23:33:28,056 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 23:33:28,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 23:33:28,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 23:33:28,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 23:33:28,057 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 23:33:28,057 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 23:33:28,279 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 23:33:28,292 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 23:33:28,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 23:33:28,295 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 23:33:28,295 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 23:33:28,296 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2022-12-12 23:33:29,224 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 23:33:29,383 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 23:33:29,383 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2022-12-12 23:33:29,388 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6dcb7194/cf173c0cc4544a858cddf8d53eeac1b3/FLAGd815ef791 [2022-12-12 23:33:29,397 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6dcb7194/cf173c0cc4544a858cddf8d53eeac1b3 [2022-12-12 23:33:29,399 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 23:33:29,400 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 23:33:29,401 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 23:33:29,401 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 23:33:29,402 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 23:33:29,403 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 11:33:29" (1/1) ... [2022-12-12 23:33:29,403 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@603b932 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:33:29, skipping insertion in model container [2022-12-12 23:33:29,404 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 11:33:29" (1/1) ... [2022-12-12 23:33:29,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 23:33:29,419 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 23:33:29,504 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:33:29,505 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:33:29,506 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:33:29,509 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:33:29,509 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:33:29,509 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:33:29,511 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:33:29,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:33:29,512 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:33:29,513 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:33:29,513 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:33:29,513 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:33:29,514 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:33:29,514 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:33:29,521 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/popl20-mult-equiv.wvr.c[2591,2604] [2022-12-12 23:33:29,531 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 23:33:29,550 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 23:33:29,565 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:33:29,566 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:33:29,567 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:33:29,570 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:33:29,570 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:33:29,572 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:33:29,573 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:33:29,575 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:33:29,575 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:33:29,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:33:29,577 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:33:29,579 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:33:29,580 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 23:33:29,581 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 23:33:29,592 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/popl20-mult-equiv.wvr.c[2591,2604] [2022-12-12 23:33:29,593 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 23:33:29,604 INFO L208 MainTranslator]: Completed translation [2022-12-12 23:33:29,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:33:29 WrapperNode [2022-12-12 23:33:29,604 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 23:33:29,605 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 23:33:29,605 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 23:33:29,605 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 23:33:29,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:33:29" (1/1) ... [2022-12-12 23:33:29,622 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:33:29" (1/1) ... [2022-12-12 23:33:29,642 INFO L138 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2022-12-12 23:33:29,642 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 23:33:29,643 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 23:33:29,643 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 23:33:29,643 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 23:33:29,649 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:33:29" (1/1) ... [2022-12-12 23:33:29,650 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:33:29" (1/1) ... [2022-12-12 23:33:29,654 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:33:29" (1/1) ... [2022-12-12 23:33:29,655 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:33:29" (1/1) ... [2022-12-12 23:33:29,669 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:33:29" (1/1) ... [2022-12-12 23:33:29,671 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:33:29" (1/1) ... [2022-12-12 23:33:29,672 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:33:29" (1/1) ... [2022-12-12 23:33:29,673 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:33:29" (1/1) ... [2022-12-12 23:33:29,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 23:33:29,675 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 23:33:29,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 23:33:29,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 23:33:29,680 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:33:29" (1/1) ... [2022-12-12 23:33:29,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 23:33:29,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:33:29,702 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 23:33:29,722 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 23:33:29,735 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 23:33:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 23:33:29,736 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 23:33:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 23:33:29,736 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 23:33:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 23:33:29,736 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 23:33:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 23:33:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 23:33:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 23:33:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 23:33:29,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 23:33:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 23:33:29,737 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 23:33:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 23:33:29,737 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 23:33:29,738 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 23:33:29,819 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 23:33:29,820 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 23:33:29,982 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 23:33:30,037 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 23:33:30,037 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-12 23:33:30,039 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 11:33:30 BoogieIcfgContainer [2022-12-12 23:33:30,039 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 23:33:30,041 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 23:33:30,041 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 23:33:30,043 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 23:33:30,043 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 11:33:29" (1/3) ... [2022-12-12 23:33:30,043 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ff5870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 11:33:30, skipping insertion in model container [2022-12-12 23:33:30,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 11:33:29" (2/3) ... [2022-12-12 23:33:30,044 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21ff5870 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 11:33:30, skipping insertion in model container [2022-12-12 23:33:30,044 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 11:33:30" (3/3) ... [2022-12-12 23:33:30,046 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-equiv.wvr.c [2022-12-12 23:33:30,057 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 23:33:30,058 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 23:33:30,058 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 23:33:30,113 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-12 23:33:30,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 92 transitions, 208 flow [2022-12-12 23:33:30,186 INFO L130 PetriNetUnfolder]: 7/89 cut-off events. [2022-12-12 23:33:30,187 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 23:33:30,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 89 events. 7/89 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2022-12-12 23:33:30,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 92 transitions, 208 flow [2022-12-12 23:33:30,200 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 79 transitions, 176 flow [2022-12-12 23:33:30,201 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 23:33:30,213 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 82 places, 79 transitions, 176 flow [2022-12-12 23:33:30,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 79 transitions, 176 flow [2022-12-12 23:33:30,236 INFO L130 PetriNetUnfolder]: 7/79 cut-off events. [2022-12-12 23:33:30,237 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 23:33:30,240 INFO L83 FinitePrefix]: Finished finitePrefix Result has 92 conditions, 79 events. 7/79 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 44 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2022-12-12 23:33:30,241 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 82 places, 79 transitions, 176 flow [2022-12-12 23:33:30,241 INFO L226 LiptonReduction]: Number of co-enabled transitions 860 [2022-12-12 23:33:32,088 INFO L241 LiptonReduction]: Total number of compositions: 56 [2022-12-12 23:33:32,099 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 23:33:32,103 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;@9f5fa31, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 23:33:32,104 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 23:33:32,108 INFO L130 PetriNetUnfolder]: 3/22 cut-off events. [2022-12-12 23:33:32,108 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 23:33:32,108 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:33:32,108 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:33:32,109 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:33:32,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:33:32,115 INFO L85 PathProgramCache]: Analyzing trace with hash 550202111, now seen corresponding path program 1 times [2022-12-12 23:33:32,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:33:32,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [466366901] [2022-12-12 23:33:32,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:33:32,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:33:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:33:32,622 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 23:33:32,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:33:32,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [466366901] [2022-12-12 23:33:32,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [466366901] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:33:32,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:33:32,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 23:33:32,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679147451] [2022-12-12 23:33:32,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:33:32,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 23:33:32,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:33:32,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 23:33:32,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 23:33:32,649 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 23 [2022-12-12 23:33:32,650 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 23:33:32,650 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:33:32,650 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 23 [2022-12-12 23:33:32,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:33:32,769 INFO L130 PetriNetUnfolder]: 271/426 cut-off events. [2022-12-12 23:33:32,770 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-12-12 23:33:32,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 868 conditions, 426 events. 271/426 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1527 event pairs, 37 based on Foata normal form. 1/279 useless extension candidates. Maximal degree in co-relation 671. Up to 309 conditions per place. [2022-12-12 23:33:32,777 INFO L137 encePairwiseOnDemand]: 18/23 looper letters, 30 selfloop transitions, 4 changer transitions 1/39 dead transitions. [2022-12-12 23:33:32,777 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 181 flow [2022-12-12 23:33:32,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 23:33:32,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 23:33:32,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2022-12-12 23:33:32,785 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6956521739130435 [2022-12-12 23:33:32,787 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2022-12-12 23:33:32,787 INFO L82 GeneralOperation]: Start removeDead. Operand has 32 places, 39 transitions, 181 flow [2022-12-12 23:33:32,789 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 32 places, 38 transitions, 174 flow [2022-12-12 23:33:32,790 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 38 transitions, 174 flow [2022-12-12 23:33:32,790 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 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 23:33:32,790 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:33:32,790 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:33:32,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 23:33:32,791 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:33:32,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:33:32,791 INFO L85 PathProgramCache]: Analyzing trace with hash -1335524592, now seen corresponding path program 1 times [2022-12-12 23:33:32,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:33:32,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858147684] [2022-12-12 23:33:32,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:33:32,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:33:32,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:33:32,974 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 23:33:32,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:33:32,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858147684] [2022-12-12 23:33:32,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858147684] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:33:32,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:33:32,974 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 23:33:32,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026185244] [2022-12-12 23:33:32,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:33:32,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-12 23:33:32,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:33:32,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-12 23:33:32,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-12 23:33:32,977 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 23 [2022-12-12 23:33:32,977 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 38 transitions, 174 flow. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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 23:33:32,977 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:33:32,977 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 23 [2022-12-12 23:33:32,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:33:33,160 INFO L130 PetriNetUnfolder]: 459/706 cut-off events. [2022-12-12 23:33:33,161 INFO L131 PetriNetUnfolder]: For 150/150 co-relation queries the response was YES. [2022-12-12 23:33:33,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2056 conditions, 706 events. 459/706 cut-off events. For 150/150 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2558 event pairs, 14 based on Foata normal form. 0/548 useless extension candidates. Maximal degree in co-relation 1882. Up to 415 conditions per place. [2022-12-12 23:33:33,166 INFO L137 encePairwiseOnDemand]: 16/23 looper letters, 80 selfloop transitions, 12 changer transitions 4/96 dead transitions. [2022-12-12 23:33:33,166 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 96 transitions, 604 flow [2022-12-12 23:33:33,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 23:33:33,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 23:33:33,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 84 transitions. [2022-12-12 23:33:33,169 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2022-12-12 23:33:33,169 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 8 predicate places. [2022-12-12 23:33:33,170 INFO L82 GeneralOperation]: Start removeDead. Operand has 38 places, 96 transitions, 604 flow [2022-12-12 23:33:33,174 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 38 places, 92 transitions, 577 flow [2022-12-12 23:33:33,174 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 92 transitions, 577 flow [2022-12-12 23:33:33,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 5 states have internal predecessors, (19), 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 23:33:33,174 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:33:33,174 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:33:33,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 23:33:33,175 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:33:33,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:33:33,176 INFO L85 PathProgramCache]: Analyzing trace with hash 781657728, now seen corresponding path program 2 times [2022-12-12 23:33:33,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:33:33,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57799742] [2022-12-12 23:33:33,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:33:33,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:33:33,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:33:33,316 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 23:33:33,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:33:33,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57799742] [2022-12-12 23:33:33,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57799742] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:33:33,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:33:33,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 23:33:33,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284271982] [2022-12-12 23:33:33,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:33:33,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 23:33:33,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:33:33,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 23:33:33,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 23:33:33,318 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 23 [2022-12-12 23:33:33,318 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 92 transitions, 577 flow. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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 23:33:33,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:33:33,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 23 [2022-12-12 23:33:33,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:33:33,544 INFO L130 PetriNetUnfolder]: 931/1426 cut-off events. [2022-12-12 23:33:33,545 INFO L131 PetriNetUnfolder]: For 310/310 co-relation queries the response was YES. [2022-12-12 23:33:33,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5576 conditions, 1426 events. 931/1426 cut-off events. For 310/310 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 6036 event pairs, 24 based on Foata normal form. 0/1080 useless extension candidates. Maximal degree in co-relation 5171. Up to 1027 conditions per place. [2022-12-12 23:33:33,552 INFO L137 encePairwiseOnDemand]: 16/23 looper letters, 193 selfloop transitions, 27 changer transitions 0/220 dead transitions. [2022-12-12 23:33:33,553 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 220 transitions, 1816 flow [2022-12-12 23:33:33,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 23:33:33,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 23:33:33,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2022-12-12 23:33:33,554 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6335403726708074 [2022-12-12 23:33:33,555 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 14 predicate places. [2022-12-12 23:33:33,555 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 220 transitions, 1816 flow [2022-12-12 23:33:33,562 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 220 transitions, 1816 flow [2022-12-12 23:33:33,562 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 220 transitions, 1816 flow [2022-12-12 23:33:33,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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 23:33:33,562 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:33:33,562 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:33:33,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 23:33:33,562 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:33:33,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:33:33,563 INFO L85 PathProgramCache]: Analyzing trace with hash 136162568, now seen corresponding path program 3 times [2022-12-12 23:33:33,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:33:33,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020939281] [2022-12-12 23:33:33,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:33:33,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:33:33,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:33:33,656 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 23:33:33,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:33:33,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020939281] [2022-12-12 23:33:33,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020939281] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:33:33,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:33:33,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 23:33:33,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584072130] [2022-12-12 23:33:33,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:33:33,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 23:33:33,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:33:33,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 23:33:33,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 23:33:33,658 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 23 [2022-12-12 23:33:33,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 220 transitions, 1816 flow. Second operand has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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 23:33:33,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:33:33,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 23 [2022-12-12 23:33:33,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:33:33,850 INFO L130 PetriNetUnfolder]: 997/1500 cut-off events. [2022-12-12 23:33:33,851 INFO L131 PetriNetUnfolder]: For 281/281 co-relation queries the response was YES. [2022-12-12 23:33:33,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7311 conditions, 1500 events. 997/1500 cut-off events. For 281/281 co-relation queries the response was YES. Maximal size of possible extension queue 86. Compared 6253 event pairs, 24 based on Foata normal form. 0/1156 useless extension candidates. Maximal degree in co-relation 6919. Up to 1057 conditions per place. [2022-12-12 23:33:33,859 INFO L137 encePairwiseOnDemand]: 16/23 looper letters, 214 selfloop transitions, 28 changer transitions 0/242 dead transitions. [2022-12-12 23:33:33,859 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 242 transitions, 2418 flow [2022-12-12 23:33:33,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 23:33:33,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 23:33:33,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2022-12-12 23:33:33,862 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2022-12-12 23:33:33,864 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 19 predicate places. [2022-12-12 23:33:33,864 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 242 transitions, 2418 flow [2022-12-12 23:33:33,872 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 49 places, 242 transitions, 2418 flow [2022-12-12 23:33:33,872 INFO L495 AbstractCegarLoop]: Abstraction has has 49 places, 242 transitions, 2418 flow [2022-12-12 23:33:33,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.8) internal successors, (19), 4 states have internal predecessors, (19), 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 23:33:33,873 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:33:33,875 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] [2022-12-12 23:33:33,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 23:33:33,875 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:33:33,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:33:33,879 INFO L85 PathProgramCache]: Analyzing trace with hash -254520140, now seen corresponding path program 1 times [2022-12-12 23:33:33,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:33:33,879 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461547663] [2022-12-12 23:33:33,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:33:33,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:33:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:33:34,090 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 23:33:34,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:33:34,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461547663] [2022-12-12 23:33:34,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461547663] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:33:34,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:33:34,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 23:33:34,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260636649] [2022-12-12 23:33:34,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:33:34,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 23:33:34,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:33:34,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 23:33:34,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 23:33:34,092 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 23 [2022-12-12 23:33:34,092 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 242 transitions, 2418 flow. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 23:33:34,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:33:34,092 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 23 [2022-12-12 23:33:34,092 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:33:34,387 INFO L130 PetriNetUnfolder]: 1361/2060 cut-off events. [2022-12-12 23:33:34,387 INFO L131 PetriNetUnfolder]: For 459/459 co-relation queries the response was YES. [2022-12-12 23:33:34,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12178 conditions, 2060 events. 1361/2060 cut-off events. For 459/459 co-relation queries the response was YES. Maximal size of possible extension queue 125. Compared 9299 event pairs, 8 based on Foata normal form. 10/1566 useless extension candidates. Maximal degree in co-relation 11561. Up to 1517 conditions per place. [2022-12-12 23:33:34,402 INFO L137 encePairwiseOnDemand]: 15/23 looper letters, 435 selfloop transitions, 175 changer transitions 23/633 dead transitions. [2022-12-12 23:33:34,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 633 transitions, 7667 flow [2022-12-12 23:33:34,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 23:33:34,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 23:33:34,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 75 transitions. [2022-12-12 23:33:34,403 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5434782608695652 [2022-12-12 23:33:34,404 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 24 predicate places. [2022-12-12 23:33:34,404 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 633 transitions, 7667 flow [2022-12-12 23:33:34,417 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 54 places, 610 transitions, 7381 flow [2022-12-12 23:33:34,418 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 610 transitions, 7381 flow [2022-12-12 23:33:34,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 23:33:34,418 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:33:34,418 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] [2022-12-12 23:33:34,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 23:33:34,418 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:33:34,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:33:34,419 INFO L85 PathProgramCache]: Analyzing trace with hash -397012424, now seen corresponding path program 2 times [2022-12-12 23:33:34,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:33:34,419 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479341720] [2022-12-12 23:33:34,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:33:34,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:33:34,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:33:34,564 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 23:33:34,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:33:34,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479341720] [2022-12-12 23:33:34,565 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479341720] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:33:34,565 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:33:34,565 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 23:33:34,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370561331] [2022-12-12 23:33:34,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:33:34,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 23:33:34,566 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:33:34,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 23:33:34,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 23:33:34,567 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 23 [2022-12-12 23:33:34,567 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 610 transitions, 7381 flow. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 23:33:34,567 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:33:34,567 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 23 [2022-12-12 23:33:34,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:33:34,927 INFO L130 PetriNetUnfolder]: 1491/2294 cut-off events. [2022-12-12 23:33:34,928 INFO L131 PetriNetUnfolder]: For 543/543 co-relation queries the response was YES. [2022-12-12 23:33:34,930 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15891 conditions, 2294 events. 1491/2294 cut-off events. For 543/543 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 10720 event pairs, 6 based on Foata normal form. 10/1754 useless extension candidates. Maximal degree in co-relation 14941. Up to 1778 conditions per place. [2022-12-12 23:33:34,946 INFO L137 encePairwiseOnDemand]: 16/23 looper letters, 641 selfloop transitions, 142 changer transitions 17/800 dead transitions. [2022-12-12 23:33:34,946 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 800 transitions, 11366 flow [2022-12-12 23:33:34,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 23:33:34,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 23:33:34,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2022-12-12 23:33:34,948 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5739130434782609 [2022-12-12 23:33:34,949 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2022-12-12 23:33:34,950 INFO L82 GeneralOperation]: Start removeDead. Operand has 58 places, 800 transitions, 11366 flow [2022-12-12 23:33:34,965 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 58 places, 783 transitions, 11115 flow [2022-12-12 23:33:34,965 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 783 transitions, 11115 flow [2022-12-12 23:33:34,965 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 23:33:34,965 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:33:34,966 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] [2022-12-12 23:33:34,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-12 23:33:34,966 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:33:34,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:33:34,966 INFO L85 PathProgramCache]: Analyzing trace with hash 1643719211, now seen corresponding path program 1 times [2022-12-12 23:33:34,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:33:34,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709046735] [2022-12-12 23:33:34,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:33:34,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:33:34,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:33:35,120 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:33:35,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:33:35,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709046735] [2022-12-12 23:33:35,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709046735] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:33:35,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1724993693] [2022-12-12 23:33:35,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:33:35,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:33:35,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:33:35,124 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 23:33:35,129 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 23:33:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:33:35,214 INFO L263 TraceCheckSpWp]: Trace formula consists of 158 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-12 23:33:35,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:33:35,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:33:35,362 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:33:35,556 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:33:35,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1724993693] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:33:35,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:33:35,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2022-12-12 23:33:35,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436702024] [2022-12-12 23:33:35,557 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:33:35,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-12 23:33:35,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:33:35,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-12 23:33:35,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-12 23:33:35,558 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 23 [2022-12-12 23:33:35,558 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 783 transitions, 11115 flow. Second operand has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 states have internal predecessors, (60), 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 23:33:35,558 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:33:35,558 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 23 [2022-12-12 23:33:35,558 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:33:36,226 INFO L130 PetriNetUnfolder]: 2347/3639 cut-off events. [2022-12-12 23:33:36,226 INFO L131 PetriNetUnfolder]: For 859/859 co-relation queries the response was YES. [2022-12-12 23:33:36,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28907 conditions, 3639 events. 2347/3639 cut-off events. For 859/859 co-relation queries the response was YES. Maximal size of possible extension queue 202. Compared 18869 event pairs, 6 based on Foata normal form. 7/2764 useless extension candidates. Maximal degree in co-relation 27100. Up to 3095 conditions per place. [2022-12-12 23:33:36,249 INFO L137 encePairwiseOnDemand]: 16/23 looper letters, 1083 selfloop transitions, 105 changer transitions 71/1259 dead transitions. [2022-12-12 23:33:36,249 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 1259 transitions, 20488 flow [2022-12-12 23:33:36,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 23:33:36,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 23:33:36,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2022-12-12 23:33:36,251 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5838509316770186 [2022-12-12 23:33:36,252 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 34 predicate places. [2022-12-12 23:33:36,252 INFO L82 GeneralOperation]: Start removeDead. Operand has 64 places, 1259 transitions, 20488 flow [2022-12-12 23:33:36,275 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 1188 transitions, 19278 flow [2022-12-12 23:33:36,276 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 1188 transitions, 19278 flow [2022-12-12 23:33:36,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.454545454545454) internal successors, (60), 10 states have internal predecessors, (60), 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 23:33:36,276 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:33:36,276 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] [2022-12-12 23:33:36,284 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 23:33:36,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:33:36,482 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:33:36,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:33:36,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1371538848, now seen corresponding path program 3 times [2022-12-12 23:33:36,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:33:36,483 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344404170] [2022-12-12 23:33:36,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:33:36,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:33:36,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:33:36,644 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 23:33:36,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:33:36,645 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344404170] [2022-12-12 23:33:36,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344404170] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:33:36,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:33:36,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 23:33:36,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459849160] [2022-12-12 23:33:36,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:33:36,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 23:33:36,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:33:36,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 23:33:36,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 23:33:36,648 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 23 [2022-12-12 23:33:36,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 1188 transitions, 19278 flow. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 23:33:36,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:33:36,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 23 [2022-12-12 23:33:36,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:33:37,348 INFO L130 PetriNetUnfolder]: 2303/3602 cut-off events. [2022-12-12 23:33:37,349 INFO L131 PetriNetUnfolder]: For 851/851 co-relation queries the response was YES. [2022-12-12 23:33:37,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32204 conditions, 3602 events. 2303/3602 cut-off events. For 851/851 co-relation queries the response was YES. Maximal size of possible extension queue 194. Compared 18759 event pairs, 2 based on Foata normal form. 14/2788 useless extension candidates. Maximal degree in co-relation 30308. Up to 3058 conditions per place. [2022-12-12 23:33:37,370 INFO L137 encePairwiseOnDemand]: 16/23 looper letters, 1022 selfloop transitions, 223 changer transitions 17/1262 dead transitions. [2022-12-12 23:33:37,371 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 1262 transitions, 23050 flow [2022-12-12 23:33:37,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 23:33:37,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 23:33:37,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 70 transitions. [2022-12-12 23:33:37,372 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6086956521739131 [2022-12-12 23:33:37,373 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 38 predicate places. [2022-12-12 23:33:37,373 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 1262 transitions, 23050 flow [2022-12-12 23:33:37,398 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 68 places, 1245 transitions, 22732 flow [2022-12-12 23:33:37,398 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 1245 transitions, 22732 flow [2022-12-12 23:33:37,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 23:33:37,399 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:33:37,399 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] [2022-12-12 23:33:37,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-12 23:33:37,399 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:33:37,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:33:37,400 INFO L85 PathProgramCache]: Analyzing trace with hash 93107000, now seen corresponding path program 4 times [2022-12-12 23:33:37,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:33:37,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206801841] [2022-12-12 23:33:37,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:33:37,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:33:37,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:33:37,549 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 23:33:37,549 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:33:37,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206801841] [2022-12-12 23:33:37,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206801841] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:33:37,550 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:33:37,550 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 23:33:37,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190870739] [2022-12-12 23:33:37,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:33:37,550 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 23:33:37,550 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:33:37,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 23:33:37,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 23:33:37,551 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 23 [2022-12-12 23:33:37,551 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 1245 transitions, 22732 flow. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 23:33:37,551 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:33:37,551 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 23 [2022-12-12 23:33:37,551 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:33:38,395 INFO L130 PetriNetUnfolder]: 2957/4538 cut-off events. [2022-12-12 23:33:38,395 INFO L131 PetriNetUnfolder]: For 955/955 co-relation queries the response was YES. [2022-12-12 23:33:38,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44953 conditions, 4538 events. 2957/4538 cut-off events. For 955/955 co-relation queries the response was YES. Maximal size of possible extension queue 255. Compared 24036 event pairs, 0 based on Foata normal form. 12/3528 useless extension candidates. Maximal degree in co-relation 42854. Up to 3828 conditions per place. [2022-12-12 23:33:38,421 INFO L137 encePairwiseOnDemand]: 16/23 looper letters, 1252 selfloop transitions, 252 changer transitions 20/1524 dead transitions. [2022-12-12 23:33:38,421 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 1524 transitions, 30705 flow [2022-12-12 23:33:38,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 23:33:38,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 23:33:38,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 71 transitions. [2022-12-12 23:33:38,422 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.6173913043478261 [2022-12-12 23:33:38,423 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 42 predicate places. [2022-12-12 23:33:38,423 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 1524 transitions, 30705 flow [2022-12-12 23:33:38,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 72 places, 1504 transitions, 30313 flow [2022-12-12 23:33:38,453 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 1504 transitions, 30313 flow [2022-12-12 23:33:38,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 23:33:38,453 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:33:38,453 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] [2022-12-12 23:33:38,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-12 23:33:38,453 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:33:38,454 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:33:38,454 INFO L85 PathProgramCache]: Analyzing trace with hash 1008188488, now seen corresponding path program 5 times [2022-12-12 23:33:38,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:33:38,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606871557] [2022-12-12 23:33:38,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:33:38,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:33:38,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:33:38,591 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 23:33:38,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:33:38,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606871557] [2022-12-12 23:33:38,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606871557] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:33:38,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:33:38,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-12 23:33:38,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862686794] [2022-12-12 23:33:38,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:33:38,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 23:33:38,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:33:38,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 23:33:38,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 23:33:38,592 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 23 [2022-12-12 23:33:38,592 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 1504 transitions, 30313 flow. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 23:33:38,592 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:33:38,593 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 23 [2022-12-12 23:33:38,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:33:39,846 INFO L130 PetriNetUnfolder]: 3664/5583 cut-off events. [2022-12-12 23:33:39,846 INFO L131 PetriNetUnfolder]: For 968/968 co-relation queries the response was YES. [2022-12-12 23:33:39,850 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60667 conditions, 5583 events. 3664/5583 cut-off events. For 968/968 co-relation queries the response was YES. Maximal size of possible extension queue 321. Compared 30448 event pairs, 4 based on Foata normal form. 12/4407 useless extension candidates. Maximal degree in co-relation 58434. Up to 4747 conditions per place. [2022-12-12 23:33:39,877 INFO L137 encePairwiseOnDemand]: 16/23 looper letters, 1477 selfloop transitions, 475 changer transitions 17/1969 dead transitions. [2022-12-12 23:33:39,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 1969 transitions, 43338 flow [2022-12-12 23:33:39,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 23:33:39,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 23:33:39,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 76 transitions. [2022-12-12 23:33:39,879 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5507246376811594 [2022-12-12 23:33:39,879 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 47 predicate places. [2022-12-12 23:33:39,879 INFO L82 GeneralOperation]: Start removeDead. Operand has 77 places, 1969 transitions, 43338 flow [2022-12-12 23:33:39,919 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 1952 transitions, 42970 flow [2022-12-12 23:33:39,919 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 1952 transitions, 42970 flow [2022-12-12 23:33:39,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 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 23:33:39,919 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:33:39,919 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] [2022-12-12 23:33:39,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-12 23:33:39,920 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:33:39,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:33:39,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1893870806, now seen corresponding path program 6 times [2022-12-12 23:33:39,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:33:39,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674823347] [2022-12-12 23:33:39,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:33:39,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:33:39,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:33:40,028 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 23:33:40,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:33:40,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [674823347] [2022-12-12 23:33:40,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [674823347] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:33:40,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:33:40,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 23:33:40,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947862379] [2022-12-12 23:33:40,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:33:40,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 23:33:40,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:33:40,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 23:33:40,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-12 23:33:40,031 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 23 [2022-12-12 23:33:40,031 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 1952 transitions, 42970 flow. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 23:33:40,031 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:33:40,031 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 23 [2022-12-12 23:33:40,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:33:41,572 INFO L130 PetriNetUnfolder]: 3749/5730 cut-off events. [2022-12-12 23:33:41,572 INFO L131 PetriNetUnfolder]: For 1016/1016 co-relation queries the response was YES. [2022-12-12 23:33:41,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 68006 conditions, 5730 events. 3749/5730 cut-off events. For 1016/1016 co-relation queries the response was YES. Maximal size of possible extension queue 328. Compared 31560 event pairs, 0 based on Foata normal form. 2/4516 useless extension candidates. Maximal degree in co-relation 65404. Up to 5453 conditions per place. [2022-12-12 23:33:41,606 INFO L137 encePairwiseOnDemand]: 16/23 looper letters, 2028 selfloop transitions, 24 changer transitions 2/2054 dead transitions. [2022-12-12 23:33:41,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 2054 transitions, 49326 flow [2022-12-12 23:33:41,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-12 23:33:41,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-12 23:33:41,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 64 transitions. [2022-12-12 23:33:41,608 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.463768115942029 [2022-12-12 23:33:41,608 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 52 predicate places. [2022-12-12 23:33:41,608 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 2054 transitions, 49326 flow [2022-12-12 23:33:41,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 2052 transitions, 49278 flow [2022-12-12 23:33:41,651 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 2052 transitions, 49278 flow [2022-12-12 23:33:41,652 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 23:33:41,652 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:33:41,652 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] [2022-12-12 23:33:41,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-12 23:33:41,652 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:33:41,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:33:41,652 INFO L85 PathProgramCache]: Analyzing trace with hash 917837146, now seen corresponding path program 7 times [2022-12-12 23:33:41,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:33:41,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840974575] [2022-12-12 23:33:41,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:33:41,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:33:41,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:33:41,792 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 23:33:41,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:33:41,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840974575] [2022-12-12 23:33:41,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840974575] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 23:33:41,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 23:33:41,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 23:33:41,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147900082] [2022-12-12 23:33:41,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 23:33:41,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 23:33:41,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:33:41,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 23:33:41,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 23:33:41,794 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 23 [2022-12-12 23:33:41,794 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 2052 transitions, 49278 flow. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 23:33:41,794 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:33:41,794 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 23 [2022-12-12 23:33:41,794 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:33:43,398 INFO L130 PetriNetUnfolder]: 3717/5640 cut-off events. [2022-12-12 23:33:43,399 INFO L131 PetriNetUnfolder]: For 974/974 co-relation queries the response was YES. [2022-12-12 23:33:43,403 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72568 conditions, 5640 events. 3717/5640 cut-off events. For 974/974 co-relation queries the response was YES. Maximal size of possible extension queue 319. Compared 30536 event pairs, 0 based on Foata normal form. 2/4430 useless extension candidates. Maximal degree in co-relation 69917. Up to 5571 conditions per place. [2022-12-12 23:33:43,432 INFO L137 encePairwiseOnDemand]: 17/23 looper letters, 1974 selfloop transitions, 17 changer transitions 4/1995 dead transitions. [2022-12-12 23:33:43,432 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 1995 transitions, 51876 flow [2022-12-12 23:33:43,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 23:33:43,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 23:33:43,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 39 transitions. [2022-12-12 23:33:43,433 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3391304347826087 [2022-12-12 23:33:43,434 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2022-12-12 23:33:43,434 INFO L82 GeneralOperation]: Start removeDead. Operand has 85 places, 1995 transitions, 51876 flow [2022-12-12 23:33:43,477 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 1991 transitions, 51774 flow [2022-12-12 23:33:43,477 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 1991 transitions, 51774 flow [2022-12-12 23:33:43,477 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 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 23:33:43,477 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:33:43,477 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] [2022-12-12 23:33:43,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-12 23:33:43,478 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:33:43,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:33:43,478 INFO L85 PathProgramCache]: Analyzing trace with hash -586011778, now seen corresponding path program 1 times [2022-12-12 23:33:43,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:33:43,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1637625492] [2022-12-12 23:33:43,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:33:43,478 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:33:43,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:33:43,635 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 23:33:43,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:33:43,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1637625492] [2022-12-12 23:33:43,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1637625492] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:33:43,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1717916025] [2022-12-12 23:33:43,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:33:43,635 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:33:43,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:33:43,637 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 23:33:43,637 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 23:33:43,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:33:43,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-12 23:33:43,764 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:33:43,886 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 23:33:43,886 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:33:44,035 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 23:33:44,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1717916025] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:33:44,036 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:33:44,036 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 8 [2022-12-12 23:33:44,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2128565009] [2022-12-12 23:33:44,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:33:44,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 23:33:44,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:33:44,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 23:33:44,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-12-12 23:33:44,037 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 23 [2022-12-12 23:33:44,037 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 1991 transitions, 51774 flow. Second operand has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 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 23:33:44,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:33:44,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 23 [2022-12-12 23:33:44,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:33:47,225 INFO L130 PetriNetUnfolder]: 5364/8644 cut-off events. [2022-12-12 23:33:47,225 INFO L131 PetriNetUnfolder]: For 1612/1612 co-relation queries the response was YES. [2022-12-12 23:33:47,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119773 conditions, 8644 events. 5364/8644 cut-off events. For 1612/1612 co-relation queries the response was YES. Maximal size of possible extension queue 536. Compared 55607 event pairs, 16 based on Foata normal form. 5/6889 useless extension candidates. Maximal degree in co-relation 114079. Up to 8581 conditions per place. [2022-12-12 23:33:47,289 INFO L137 encePairwiseOnDemand]: 17/23 looper letters, 2779 selfloop transitions, 491 changer transitions 49/3319 dead transitions. [2022-12-12 23:33:47,290 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 3319 transitions, 92995 flow [2022-12-12 23:33:47,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-12 23:33:47,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-12 23:33:47,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 120 transitions. [2022-12-12 23:33:47,291 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5797101449275363 [2022-12-12 23:33:47,292 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 60 predicate places. [2022-12-12 23:33:47,292 INFO L82 GeneralOperation]: Start removeDead. Operand has 90 places, 3319 transitions, 92995 flow [2022-12-12 23:33:47,379 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 90 places, 3270 transitions, 91577 flow [2022-12-12 23:33:47,380 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 3270 transitions, 91577 flow [2022-12-12 23:33:47,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.111111111111111) internal successors, (55), 9 states have internal predecessors, (55), 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 23:33:47,380 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:33:47,380 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] [2022-12-12 23:33:47,389 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 23:33:47,584 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,SelfDestructingSolverStorable12 [2022-12-12 23:33:47,584 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:33:47,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:33:47,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1592760728, now seen corresponding path program 2 times [2022-12-12 23:33:47,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:33:47,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977680507] [2022-12-12 23:33:47,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:33:47,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:33:47,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:33:47,802 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 23:33:47,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:33:47,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977680507] [2022-12-12 23:33:47,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977680507] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:33:47,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1460458398] [2022-12-12 23:33:47,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 23:33:47,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:33:47,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:33:47,804 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 23:33:47,839 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 23:33:47,885 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 23:33:47,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 23:33:47,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-12 23:33:47,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:33:47,955 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 23:33:47,956 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:33:48,155 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 23:33:48,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1460458398] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:33:48,156 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:33:48,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2022-12-12 23:33:48,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970230662] [2022-12-12 23:33:48,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:33:48,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-12 23:33:48,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:33:48,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-12 23:33:48,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-12-12 23:33:48,159 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 23 [2022-12-12 23:33:48,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 3270 transitions, 91577 flow. Second operand has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 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 23:33:48,159 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:33:48,159 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 23 [2022-12-12 23:33:48,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:33:53,940 INFO L130 PetriNetUnfolder]: 5998/9665 cut-off events. [2022-12-12 23:33:53,940 INFO L131 PetriNetUnfolder]: For 1750/1750 co-relation queries the response was YES. [2022-12-12 23:33:53,946 INFO L83 FinitePrefix]: Finished finitePrefix Result has 143599 conditions, 9665 events. 5998/9665 cut-off events. For 1750/1750 co-relation queries the response was YES. Maximal size of possible extension queue 620. Compared 63528 event pairs, 10 based on Foata normal form. 12/7677 useless extension candidates. Maximal degree in co-relation 136754. Up to 9602 conditions per place. [2022-12-12 23:33:53,999 INFO L137 encePairwiseOnDemand]: 16/23 looper letters, 3221 selfloop transitions, 484 changer transitions 107/3812 dead transitions. [2022-12-12 23:33:53,999 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 3812 transitions, 114397 flow [2022-12-12 23:33:54,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-12 23:33:54,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-12 23:33:54,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 110 transitions. [2022-12-12 23:33:54,000 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.43478260869565216 [2022-12-12 23:33:54,001 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 70 predicate places. [2022-12-12 23:33:54,001 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 3812 transitions, 114397 flow [2022-12-12 23:33:54,086 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 100 places, 3705 transitions, 111077 flow [2022-12-12 23:33:54,086 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 3705 transitions, 111077 flow [2022-12-12 23:33:54,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.7272727272727275) internal successors, (63), 11 states have internal predecessors, (63), 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 23:33:54,086 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:33:54,086 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] [2022-12-12 23:33:54,091 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 23:33:54,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:33:54,287 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:33:54,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:33:54,287 INFO L85 PathProgramCache]: Analyzing trace with hash 468536165, now seen corresponding path program 1 times [2022-12-12 23:33:54,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:33:54,287 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010405365] [2022-12-12 23:33:54,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:33:54,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:33:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:33:54,502 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 23:33:54,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:33:54,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010405365] [2022-12-12 23:33:54,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010405365] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:33:54,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960711481] [2022-12-12 23:33:54,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:33:54,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:33:54,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:33:54,504 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 23:33:54,506 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 23:33:54,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:33:54,562 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-12 23:33:54,564 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:33:54,817 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 23:33:54,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:33:55,159 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 23:33:55,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960711481] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:33:55,159 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:33:55,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 9] total 20 [2022-12-12 23:33:55,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27760013] [2022-12-12 23:33:55,159 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:33:55,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-12 23:33:55,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:33:55,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-12 23:33:55,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=301, Unknown=0, NotChecked=0, Total=420 [2022-12-12 23:33:55,160 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 23 [2022-12-12 23:33:55,160 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 3705 transitions, 111077 flow. Second operand has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 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 23:33:55,161 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:33:55,161 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 23 [2022-12-12 23:33:55,161 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:34:06,840 INFO L130 PetriNetUnfolder]: 8971/13872 cut-off events. [2022-12-12 23:34:06,840 INFO L131 PetriNetUnfolder]: For 2480/2480 co-relation queries the response was YES. [2022-12-12 23:34:06,849 INFO L83 FinitePrefix]: Finished finitePrefix Result has 220003 conditions, 13872 events. 8971/13872 cut-off events. For 2480/2480 co-relation queries the response was YES. Maximal size of possible extension queue 848. Compared 90815 event pairs, 8 based on Foata normal form. 0/11320 useless extension candidates. Maximal degree in co-relation 210230. Up to 13809 conditions per place. [2022-12-12 23:34:06,940 INFO L137 encePairwiseOnDemand]: 12/23 looper letters, 3874 selfloop transitions, 1885 changer transitions 2/5761 dead transitions. [2022-12-12 23:34:06,940 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 5761 transitions, 184274 flow [2022-12-12 23:34:06,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-12-12 23:34:06,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2022-12-12 23:34:06,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 481 transitions. [2022-12-12 23:34:06,943 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4182608695652174 [2022-12-12 23:34:06,943 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 118 predicate places. [2022-12-12 23:34:06,943 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 5761 transitions, 184274 flow [2022-12-12 23:34:07,095 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 5759 transitions, 184210 flow [2022-12-12 23:34:07,095 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 5759 transitions, 184210 flow [2022-12-12 23:34:07,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 2.1904761904761907) internal successors, (46), 20 states have internal predecessors, (46), 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 23:34:07,096 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:34:07,096 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] [2022-12-12 23:34:07,103 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 23:34:07,296 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-12-12 23:34:07,296 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:34:07,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:34:07,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1664948471, now seen corresponding path program 2 times [2022-12-12 23:34:07,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:34:07,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012809201] [2022-12-12 23:34:07,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:34:07,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:34:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:34:07,448 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 23:34:07,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:34:07,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012809201] [2022-12-12 23:34:07,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012809201] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:34:07,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1880895938] [2022-12-12 23:34:07,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 23:34:07,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:34:07,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:34:07,449 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 23:34:07,451 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 23:34:07,513 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 23:34:07,513 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 23:34:07,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-12 23:34:07,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:34:07,685 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 23:34:07,686 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:34:07,940 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 23:34:07,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1880895938] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:34:07,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:34:07,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 9, 9] total 18 [2022-12-12 23:34:07,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308616501] [2022-12-12 23:34:07,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:34:07,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-12 23:34:07,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:34:07,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-12 23:34:07,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=251, Unknown=0, NotChecked=0, Total=342 [2022-12-12 23:34:07,941 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 23 [2022-12-12 23:34:07,942 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 5759 transitions, 184210 flow. Second operand has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 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 23:34:07,942 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:34:07,942 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 23 [2022-12-12 23:34:07,942 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:34:44,443 INFO L130 PetriNetUnfolder]: 18261/28882 cut-off events. [2022-12-12 23:34:44,443 INFO L131 PetriNetUnfolder]: For 5086/5086 co-relation queries the response was YES. [2022-12-12 23:34:44,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486690 conditions, 28882 events. 18261/28882 cut-off events. For 5086/5086 co-relation queries the response was YES. Maximal size of possible extension queue 1620. Compared 215869 event pairs, 0 based on Foata normal form. 0/23324 useless extension candidates. Maximal degree in co-relation 461429. Up to 28819 conditions per place. [2022-12-12 23:34:44,683 INFO L137 encePairwiseOnDemand]: 12/23 looper letters, 7949 selfloop transitions, 5849 changer transitions 9/13807 dead transitions. [2022-12-12 23:34:44,683 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 13807 transitions, 468673 flow [2022-12-12 23:34:44,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-12-12 23:34:44,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-12-12 23:34:44,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 630 transitions. [2022-12-12 23:34:44,686 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4417952314165498 [2022-12-12 23:34:44,686 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 179 predicate places. [2022-12-12 23:34:44,686 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 13807 transitions, 468673 flow [2022-12-12 23:34:45,063 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 209 places, 13798 transitions, 468361 flow [2022-12-12 23:34:45,063 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 13798 transitions, 468361 flow [2022-12-12 23:34:45,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 2.526315789473684) internal successors, (48), 18 states have internal predecessors, (48), 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 23:34:45,063 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:34:45,064 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] [2022-12-12 23:34:45,071 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-12 23:34:45,268 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,SelfDestructingSolverStorable15 [2022-12-12 23:34:45,268 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:34:45,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:34:45,269 INFO L85 PathProgramCache]: Analyzing trace with hash 576551023, now seen corresponding path program 3 times [2022-12-12 23:34:45,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:34:45,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860983762] [2022-12-12 23:34:45,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:34:45,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:34:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:34:45,414 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:34:45,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:34:45,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860983762] [2022-12-12 23:34:45,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860983762] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:34:45,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1345173720] [2022-12-12 23:34:45,414 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 23:34:45,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:34:45,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:34:45,415 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 23:34:45,417 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 23:34:45,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 23:34:45,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 23:34:45,484 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-12 23:34:45,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:34:45,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:34:45,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:34:45,776 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 23:34:45,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1345173720] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:34:45,777 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:34:45,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 8] total 15 [2022-12-12 23:34:45,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136260677] [2022-12-12 23:34:45,777 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:34:45,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-12 23:34:45,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:34:45,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-12 23:34:45,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-12-12 23:34:45,778 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 23 [2022-12-12 23:34:45,778 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 13798 transitions, 468361 flow. Second operand has 16 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 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 23:34:45,778 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:34:45,778 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 23 [2022-12-12 23:34:45,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:36:36,969 INFO L130 PetriNetUnfolder]: 19824/31155 cut-off events. [2022-12-12 23:36:36,969 INFO L131 PetriNetUnfolder]: For 5489/5489 co-relation queries the response was YES. [2022-12-12 23:36:36,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 556235 conditions, 31155 events. 19824/31155 cut-off events. For 5489/5489 co-relation queries the response was YES. Maximal size of possible extension queue 1704. Compared 232602 event pairs, 0 based on Foata normal form. 4/25101 useless extension candidates. Maximal degree in co-relation 527290. Up to 31092 conditions per place. [2022-12-12 23:36:37,215 INFO L137 encePairwiseOnDemand]: 12/23 looper letters, 9312 selfloop transitions, 6655 changer transitions 9/15976 dead transitions. [2022-12-12 23:36:37,215 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 15976 transitions, 574294 flow [2022-12-12 23:36:37,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-12-12 23:36:37,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2022-12-12 23:36:37,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 504 transitions. [2022-12-12 23:36:37,217 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.41345365053322397 [2022-12-12 23:36:37,217 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2022-12-12 23:36:37,217 INFO L82 GeneralOperation]: Start removeDead. Operand has 261 places, 15976 transitions, 574294 flow [2022-12-12 23:36:37,643 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 261 places, 15967 transitions, 573964 flow [2022-12-12 23:36:37,643 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 15967 transitions, 573964 flow [2022-12-12 23:36:37,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 2.5) internal successors, (40), 15 states have internal predecessors, (40), 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 23:36:37,643 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:36:37,643 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] [2022-12-12 23:36:37,649 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-12 23:36:37,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-12 23:36:37,849 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:36:37,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:36:37,849 INFO L85 PathProgramCache]: Analyzing trace with hash -802870757, now seen corresponding path program 4 times [2022-12-12 23:36:37,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:36:37,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068841403] [2022-12-12 23:36:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:36:37,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:36:37,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:36:37,970 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 23:36:37,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:36:37,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068841403] [2022-12-12 23:36:37,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068841403] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:36:37,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607310165] [2022-12-12 23:36:37,971 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 23:36:37,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:36:37,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:36:37,973 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 23:36:37,975 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-12 23:36:38,039 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 23:36:38,044 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 23:36:38,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 16 conjunts are in the unsatisfiable core [2022-12-12 23:36:38,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:36:38,193 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 23:36:38,194 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:36:38,376 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 23:36:38,377 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607310165] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:36:38,377 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:36:38,377 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 7, 8] total 17 [2022-12-12 23:36:38,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884930652] [2022-12-12 23:36:38,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:36:38,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 23:36:38,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:36:38,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 23:36:38,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=222, Unknown=0, NotChecked=0, Total=306 [2022-12-12 23:36:38,378 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 23 [2022-12-12 23:36:38,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 15967 transitions, 573964 flow. Second operand has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 17 states have internal predecessors, (42), 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 23:36:38,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:36:38,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 23 [2022-12-12 23:36:38,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 23:41:53,461 INFO L130 PetriNetUnfolder]: 45069/70606 cut-off events. [2022-12-12 23:41:53,462 INFO L131 PetriNetUnfolder]: For 12157/12157 co-relation queries the response was YES. [2022-12-12 23:41:53,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1330740 conditions, 70606 events. 45069/70606 cut-off events. For 12157/12157 co-relation queries the response was YES. Maximal size of possible extension queue 3811. Compared 584950 event pairs, 0 based on Foata normal form. 0/56230 useless extension candidates. Maximal degree in co-relation 1271772. Up to 70543 conditions per place. [2022-12-12 23:41:54,126 INFO L137 encePairwiseOnDemand]: 12/23 looper letters, 20482 selfloop transitions, 16136 changer transitions 13/36631 dead transitions. [2022-12-12 23:41:54,126 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 36631 transitions, 1388760 flow [2022-12-12 23:41:54,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-12-12 23:41:54,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2022-12-12 23:41:54,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 912 transitions. [2022-12-12 23:41:54,129 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.43573817486860966 [2022-12-12 23:41:54,129 INFO L295 CegarLoopForPetriNet]: 30 programPoint places, 317 predicate places. [2022-12-12 23:41:54,129 INFO L82 GeneralOperation]: Start removeDead. Operand has 347 places, 36631 transitions, 1388760 flow [2022-12-12 23:41:55,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 347 places, 36618 transitions, 1388257 flow [2022-12-12 23:41:55,300 INFO L495 AbstractCegarLoop]: Abstraction has has 347 places, 36618 transitions, 1388257 flow [2022-12-12 23:41:55,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 2.3333333333333335) internal successors, (42), 17 states have internal predecessors, (42), 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 23:41:55,301 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 23:41:55,301 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 23:41:55,308 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 23:41:55,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:41:55,506 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-12 23:41:55,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 23:41:55,506 INFO L85 PathProgramCache]: Analyzing trace with hash -988195701, now seen corresponding path program 3 times [2022-12-12 23:41:55,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 23:41:55,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991919839] [2022-12-12 23:41:55,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 23:41:55,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 23:41:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 23:41:55,701 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:41:55,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 23:41:55,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991919839] [2022-12-12 23:41:55,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991919839] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 23:41:55,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [606663159] [2022-12-12 23:41:55,702 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 23:41:55,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:41:55,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 23:41:55,703 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 23:41:55,705 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 23:41:55,772 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 23:41:55,772 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 23:41:55,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-12 23:41:55,774 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 23:41:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:41:55,895 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 23:41:56,097 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 23:41:56,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [606663159] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 23:41:56,098 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 23:41:56,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 19 [2022-12-12 23:41:56,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008944516] [2022-12-12 23:41:56,098 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 23:41:56,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-12-12 23:41:56,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 23:41:56,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-12-12 23:41:56,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=285, Unknown=0, NotChecked=0, Total=380 [2022-12-12 23:41:56,099 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 23 [2022-12-12 23:41:56,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 347 places, 36618 transitions, 1388257 flow. Second operand has 20 states, 20 states have (on average 2.75) internal successors, (55), 19 states have internal predecessors, (55), 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 23:41:56,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 23:41:56,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 23 [2022-12-12 23:41:56,099 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-12 23:47:41,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-12-12 23:47:41,325 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 23:47:41,326 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 23:47:41,327 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 23:47:41,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-12 23:47:41,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 23:47:41,526 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (20states, 0/23 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 558408 conditions, 28156 events (18837/28155 cut-off events. For 5084/5084 co-relation queries the response was YES. Maximal size of possible extension queue 4831. Compared 227871 event pairs, 0 based on Foata normal form. 123/26090 useless extension candidates. Maximal degree in co-relation 557205. Up to 28092 conditions per place.). [2022-12-12 23:47:41,528 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 23:47:41,528 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 23:47:41,528 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 23:47:41,528 INFO L445 BasicCegarLoop]: Path program histogram: [7, 4, 3, 3, 1, 1] [2022-12-12 23:47:41,531 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 23:47:41,531 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 23:47:41,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 11:47:41 BasicIcfg [2022-12-12 23:47:41,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 23:47:41,533 INFO L158 Benchmark]: Toolchain (without parser) took 852133.46ms. Allocated memory was 211.8MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 187.9MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2022-12-12 23:47:41,533 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 211.8MB. Free memory is still 187.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 23:47:41,534 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.13ms. Allocated memory is still 211.8MB. Free memory was 187.9MB in the beginning and 174.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 23:47:41,534 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.76ms. Allocated memory is still 211.8MB. Free memory was 174.8MB in the beginning and 173.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 23:47:41,534 INFO L158 Benchmark]: Boogie Preprocessor took 31.42ms. Allocated memory is still 211.8MB. Free memory was 173.2MB in the beginning and 171.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 23:47:41,534 INFO L158 Benchmark]: RCFGBuilder took 364.33ms. Allocated memory is still 211.8MB. Free memory was 171.7MB in the beginning and 155.4MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-12-12 23:47:41,534 INFO L158 Benchmark]: TraceAbstraction took 851492.26ms. Allocated memory was 211.8MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 154.4MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. [2022-12-12 23:47:41,535 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 211.8MB. Free memory is still 187.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 204.13ms. Allocated memory is still 211.8MB. Free memory was 187.9MB in the beginning and 174.8MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.76ms. Allocated memory is still 211.8MB. Free memory was 174.8MB in the beginning and 173.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.42ms. Allocated memory is still 211.8MB. Free memory was 173.2MB in the beginning and 171.7MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 364.33ms. Allocated memory is still 211.8MB. Free memory was 171.7MB in the beginning and 155.4MB in the end (delta: 16.3MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 851492.26ms. Allocated memory was 211.8MB in the beginning and 2.3GB in the end (delta: 2.1GB). Free memory was 154.4MB in the beginning and 1.5GB in the end (delta: -1.3GB). Peak memory consumption was 2.1GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 82 PlacesBefore, 30 PlacesAfterwards, 79 TransitionsBefore, 23 TransitionsAfterwards, 860 CoEnabledTransitionPairs, 2 FixpointIterations, 0 TrivialSequentialCompositions, 0 ConcurrentSequentialCompositions, 31 TrivialYvCompositions, 21 ConcurrentYvCompositions, 4 ChoiceCompositions, 56 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 467, independent: 459, independent conditional: 459, independent unconditional: 0, dependent: 8, dependent conditional: 8, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 467, independent: 459, independent conditional: 0, independent unconditional: 459, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 467, independent: 459, independent conditional: 0, independent unconditional: 459, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 467, independent: 459, independent conditional: 0, independent unconditional: 459, dependent: 8, dependent conditional: 0, dependent unconditional: 8, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 435, independent: 430, independent conditional: 0, independent unconditional: 430, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 435, independent: 430, independent conditional: 0, independent unconditional: 430, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 5, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 5, dependent conditional: 0, dependent unconditional: 5, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 31, independent: 0, independent conditional: 0, independent unconditional: 0, dependent: 31, dependent conditional: 0, dependent unconditional: 31, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 467, independent: 29, independent conditional: 0, independent unconditional: 29, dependent: 3, dependent conditional: 0, dependent unconditional: 3, unknown: 435, unknown conditional: 0, unknown unconditional: 435] , Statistics on independence cache: Total cache size (in pairs): 666, Positive cache size: 661, Positive conditional cache size: 0, Positive unconditional cache size: 661, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (20states, 0/23 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 558408 conditions, 28156 events (18837/28155 cut-off events. For 5084/5084 co-relation queries the response was YES. Maximal size of possible extension queue 4831. Compared 227871 event pairs, 0 based on Foata normal form. 123/26090 useless extension candidates. Maximal degree in co-relation 557205. Up to 28092 conditions per place.). - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (20states, 0/23 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 558408 conditions, 28156 events (18837/28155 cut-off events. For 5084/5084 co-relation queries the response was YES. Maximal size of possible extension queue 4831. Compared 227871 event pairs, 0 based on Foata normal form. 123/26090 useless extension candidates. Maximal degree in co-relation 557205. Up to 28092 conditions per place.). - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (20states, 0/23 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 558408 conditions, 28156 events (18837/28155 cut-off events. For 5084/5084 co-relation queries the response was YES. Maximal size of possible extension queue 4831. Compared 227871 event pairs, 0 based on Foata normal form. 123/26090 useless extension candidates. Maximal degree in co-relation 557205. Up to 28092 conditions per place.). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (20states, 0/23 universal loopers) in iteration 19,while PetriNetUnfolder was constructing finite prefix that currently has 558408 conditions, 28156 events (18837/28155 cut-off events. For 5084/5084 co-relation queries the response was YES. Maximal size of possible extension queue 4831. Compared 227871 event pairs, 0 based on Foata normal form. 123/26090 useless extension candidates. Maximal degree in co-relation 557205. Up to 28092 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 2.6s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 851.4s, OverallIterations: 19, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 838.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2999 SdHoareTripleChecker+Valid, 7.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2999 mSDsluCounter, 156 SdHoareTripleChecker+Invalid, 6.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 93 mSDsCounter, 533 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 10181 IncrementalHoareTripleChecker+Invalid, 10714 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 533 mSolverCounterUnsat, 63 mSDtfsCounter, 10181 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 667 GetRequests, 268 SyntacticMatches, 5 SemanticMatches, 394 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7307 ImplicationChecksByTransitivity, 9.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1388257occurred in iteration=18, InterpolantAutomatonStates: 344, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 2.6s AutomataMinimizationTime, 18 MinimizatonAttempts, 8956 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 5.6s InterpolantComputationTime, 551 NumberOfCodeBlocks, 551 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 684 ConstructedInterpolants, 0 QuantifiedInterpolants, 7881 SizeOfPredicates, 45 NumberOfNonLiveVariables, 1304 ConjunctsInSsa, 120 ConjunctsInUnsatCore, 35 InterpolantComputations, 11 PerfectInterpolantSequences, 15/61 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