/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 19:53:35,402 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 19:53:35,404 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 19:53:35,432 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 19:53:35,432 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 19:53:35,434 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 19:53:35,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 19:53:35,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 19:53:35,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 19:53:35,448 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 19:53:35,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 19:53:35,450 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 19:53:35,450 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 19:53:35,452 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 19:53:35,452 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 19:53:35,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 19:53:35,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 19:53:35,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 19:53:35,458 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 19:53:35,461 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 19:53:35,462 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 19:53:35,463 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 19:53:35,464 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 19:53:35,465 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 19:53:35,467 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 19:53:35,467 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 19:53:35,467 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 19:53:35,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 19:53:35,469 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 19:53:35,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 19:53:35,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 19:53:35,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 19:53:35,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 19:53:35,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 19:53:35,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 19:53:35,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 19:53:35,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 19:53:35,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 19:53:35,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 19:53:35,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 19:53:35,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 19:53:35,475 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 19:53:35,499 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 19:53:35,499 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 19:53:35,500 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 19:53:35,500 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 19:53:35,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 19:53:35,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 19:53:35,501 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 19:53:35,501 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 19:53:35,502 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 19:53:35,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 19:53:35,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 19:53:35,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 19:53:35,502 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 19:53:35,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 19:53:35,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 19:53:35,503 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 19:53:35,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 19:53:35,503 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 19:53:35,503 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 19:53:35,503 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 19:53:35,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 19:53:35,503 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 19:53:35,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 19:53:35,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 19:53:35,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 19:53:35,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 19:53:35,504 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 19:53:35,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 19:53:35,504 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 19:53:35,504 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 19:53:35,504 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-12 19:53:35,739 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 19:53:35,763 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 19:53:35,764 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 19:53:35,765 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 19:53:35,765 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 19:53:35,766 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c [2022-12-12 19:53:36,715 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 19:53:36,917 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 19:53:36,918 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-ring-nondet.wvr.c [2022-12-12 19:53:36,928 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1846451d9/77a63615b82f41328bc5a46a0675950e/FLAGf111616c9 [2022-12-12 19:53:36,937 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1846451d9/77a63615b82f41328bc5a46a0675950e [2022-12-12 19:53:36,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 19:53:36,941 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 19:53:36,941 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 19:53:36,941 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 19:53:36,943 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 19:53:36,943 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 07:53:36" (1/1) ... [2022-12-12 19:53:36,944 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32844dcd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:53:36, skipping insertion in model container [2022-12-12 19:53:36,944 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 07:53:36" (1/1) ... [2022-12-12 19:53:36,948 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 19:53:36,963 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 19:53:37,060 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:53:37,062 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:53:37,062 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:53:37,064 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:53:37,065 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:53:37,066 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:53:37,067 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:53:37,072 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:53:37,074 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:53:37,077 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:53:37,077 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:53:37,079 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:53:37,081 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:53:37,082 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:53:37,083 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:53:37,084 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:53:37,093 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-bad-ring-nondet.wvr.c[4085,4098] [2022-12-12 19:53:37,098 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 19:53:37,107 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 19:53:37,123 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:53:37,124 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:53:37,126 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:53:37,127 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:53:37,127 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:53:37,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:53:37,128 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:53:37,135 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:53:37,136 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:53:37,137 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:53:37,137 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:53:37,137 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:53:37,138 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:53:37,139 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:53:37,139 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 19:53:37,139 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 19:53:37,143 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-bad-ring-nondet.wvr.c[4085,4098] [2022-12-12 19:53:37,145 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 19:53:37,162 INFO L208 MainTranslator]: Completed translation [2022-12-12 19:53:37,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:53:37 WrapperNode [2022-12-12 19:53:37,162 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 19:53:37,163 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 19:53:37,164 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 19:53:37,164 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 19:53:37,168 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:53:37" (1/1) ... [2022-12-12 19:53:37,182 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:53:37" (1/1) ... [2022-12-12 19:53:37,216 INFO L138 Inliner]: procedures = 25, calls = 63, calls flagged for inlining = 16, calls inlined = 20, statements flattened = 317 [2022-12-12 19:53:37,217 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 19:53:37,217 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 19:53:37,217 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 19:53:37,218 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 19:53:37,227 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:53:37" (1/1) ... [2022-12-12 19:53:37,228 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:53:37" (1/1) ... [2022-12-12 19:53:37,237 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:53:37" (1/1) ... [2022-12-12 19:53:37,238 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:53:37" (1/1) ... [2022-12-12 19:53:37,243 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:53:37" (1/1) ... [2022-12-12 19:53:37,247 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:53:37" (1/1) ... [2022-12-12 19:53:37,258 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:53:37" (1/1) ... [2022-12-12 19:53:37,260 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:53:37" (1/1) ... [2022-12-12 19:53:37,262 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 19:53:37,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 19:53:37,263 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 19:53:37,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 19:53:37,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:53:37" (1/1) ... [2022-12-12 19:53:37,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 19:53:37,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:53:37,300 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 19:53:37,320 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 19:53:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 19:53:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 19:53:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 19:53:37,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 19:53:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 19:53:37,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 19:53:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 19:53:37,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 19:53:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-12 19:53:37,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-12 19:53:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 19:53:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 19:53:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 19:53:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-12 19:53:37,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 19:53:37,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 19:53:37,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 19:53:37,335 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 19:53:37,474 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 19:53:37,476 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 19:53:37,774 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 19:53:37,930 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 19:53:37,930 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-12 19:53:37,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 07:53:37 BoogieIcfgContainer [2022-12-12 19:53:37,937 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 19:53:37,938 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 19:53:37,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 19:53:37,941 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 19:53:37,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 07:53:36" (1/3) ... [2022-12-12 19:53:37,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156bf8ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 07:53:37, skipping insertion in model container [2022-12-12 19:53:37,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 07:53:37" (2/3) ... [2022-12-12 19:53:37,942 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@156bf8ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 07:53:37, skipping insertion in model container [2022-12-12 19:53:37,942 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 07:53:37" (3/3) ... [2022-12-12 19:53:37,943 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-ring-nondet.wvr.c [2022-12-12 19:53:37,958 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 19:53:37,958 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 19:53:37,958 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 19:53:38,066 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-12 19:53:38,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 241 places, 256 transitions, 536 flow [2022-12-12 19:53:38,186 INFO L130 PetriNetUnfolder]: 25/253 cut-off events. [2022-12-12 19:53:38,186 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 19:53:38,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 266 conditions, 253 events. 25/253 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 206 event pairs, 0 based on Foata normal form. 0/227 useless extension candidates. Maximal degree in co-relation 215. Up to 4 conditions per place. [2022-12-12 19:53:38,192 INFO L82 GeneralOperation]: Start removeDead. Operand has 241 places, 256 transitions, 536 flow [2022-12-12 19:53:38,205 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 228 places, 243 transitions, 504 flow [2022-12-12 19:53:38,207 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 19:53:38,224 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 228 places, 243 transitions, 504 flow [2022-12-12 19:53:38,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 228 places, 243 transitions, 504 flow [2022-12-12 19:53:38,294 INFO L130 PetriNetUnfolder]: 25/243 cut-off events. [2022-12-12 19:53:38,294 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 19:53:38,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 256 conditions, 243 events. 25/243 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 204 event pairs, 0 based on Foata normal form. 0/218 useless extension candidates. Maximal degree in co-relation 215. Up to 4 conditions per place. [2022-12-12 19:53:38,299 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 228 places, 243 transitions, 504 flow [2022-12-12 19:53:38,299 INFO L226 LiptonReduction]: Number of co-enabled transitions 2820 [2022-12-12 19:53:46,354 INFO L241 LiptonReduction]: Total number of compositions: 210 [2022-12-12 19:53:46,364 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 19:53:46,368 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;@7ee1af22, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 19:53:46,368 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-12 19:53:46,373 INFO L130 PetriNetUnfolder]: 8/32 cut-off events. [2022-12-12 19:53:46,373 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 19:53:46,373 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:53:46,373 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:53:46,374 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 19:53:46,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:53:46,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1935456720, now seen corresponding path program 1 times [2022-12-12 19:53:46,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:53:46,383 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666766987] [2022-12-12 19:53:46,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:53:46,383 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:53:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:53:46,700 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 19:53:46,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:53:46,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666766987] [2022-12-12 19:53:46,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666766987] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:53:46,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:53:46,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 19:53:46,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320178270] [2022-12-12 19:53:46,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:53:46,707 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 19:53:46,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:53:46,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 19:53:46,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 19:53:46,720 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 33 [2022-12-12 19:53:46,721 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 33 transitions, 84 flow. Second operand has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 19:53:46,721 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:53:46,721 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 33 [2022-12-12 19:53:46,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:53:46,861 INFO L130 PetriNetUnfolder]: 472/693 cut-off events. [2022-12-12 19:53:46,862 INFO L131 PetriNetUnfolder]: For 58/58 co-relation queries the response was YES. [2022-12-12 19:53:46,865 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1465 conditions, 693 events. 472/693 cut-off events. For 58/58 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2150 event pairs, 135 based on Foata normal form. 30/576 useless extension candidates. Maximal degree in co-relation 1219. Up to 449 conditions per place. [2022-12-12 19:53:46,871 INFO L137 encePairwiseOnDemand]: 26/33 looper letters, 40 selfloop transitions, 3 changer transitions 0/44 dead transitions. [2022-12-12 19:53:46,872 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 44 transitions, 198 flow [2022-12-12 19:53:46,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 19:53:46,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 19:53:46,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 52 transitions. [2022-12-12 19:53:46,880 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5252525252525253 [2022-12-12 19:53:46,884 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 2 predicate places. [2022-12-12 19:53:46,885 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 44 transitions, 198 flow [2022-12-12 19:53:46,887 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 37 places, 44 transitions, 198 flow [2022-12-12 19:53:46,888 INFO L495 AbstractCegarLoop]: Abstraction has has 37 places, 44 transitions, 198 flow [2022-12-12 19:53:46,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 8.333333333333334) internal successors, (25), 3 states have internal predecessors, (25), 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 19:53:46,888 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:53:46,889 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:53:46,889 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 19:53:46,889 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 19:53:46,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:53:46,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1141673692, now seen corresponding path program 1 times [2022-12-12 19:53:46,889 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:53:46,890 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1280980582] [2022-12-12 19:53:46,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:53:46,890 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:53:46,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:53:47,061 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 19:53:47,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:53:47,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1280980582] [2022-12-12 19:53:47,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1280980582] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:53:47,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:53:47,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 19:53:47,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927575465] [2022-12-12 19:53:47,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:53:47,063 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 19:53:47,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:53:47,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 19:53:47,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 19:53:47,064 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 33 [2022-12-12 19:53:47,064 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 44 transitions, 198 flow. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 19:53:47,064 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:53:47,064 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 33 [2022-12-12 19:53:47,064 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:53:47,205 INFO L130 PetriNetUnfolder]: 501/754 cut-off events. [2022-12-12 19:53:47,205 INFO L131 PetriNetUnfolder]: For 76/82 co-relation queries the response was YES. [2022-12-12 19:53:47,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2353 conditions, 754 events. 501/754 cut-off events. For 76/82 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2361 event pairs, 162 based on Foata normal form. 26/630 useless extension candidates. Maximal degree in co-relation 1799. Up to 691 conditions per place. [2022-12-12 19:53:47,209 INFO L137 encePairwiseOnDemand]: 27/33 looper letters, 42 selfloop transitions, 2 changer transitions 14/59 dead transitions. [2022-12-12 19:53:47,209 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 59 transitions, 383 flow [2022-12-12 19:53:47,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 19:53:47,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 19:53:47,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2022-12-12 19:53:47,211 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3939393939393939 [2022-12-12 19:53:47,211 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 5 predicate places. [2022-12-12 19:53:47,211 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 59 transitions, 383 flow [2022-12-12 19:53:47,214 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 45 transitions, 290 flow [2022-12-12 19:53:47,214 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 45 transitions, 290 flow [2022-12-12 19:53:47,214 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 19:53:47,214 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:53:47,214 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:53:47,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 19:53:47,214 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 19:53:47,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:53:47,216 INFO L85 PathProgramCache]: Analyzing trace with hash -1894771251, now seen corresponding path program 1 times [2022-12-12 19:53:47,216 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:53:47,217 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640837550] [2022-12-12 19:53:47,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:53:47,217 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:53:47,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:53:47,331 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 19:53:47,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:53:47,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640837550] [2022-12-12 19:53:47,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640837550] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:53:47,334 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:53:47,334 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 19:53:47,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118080592] [2022-12-12 19:53:47,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:53:47,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 19:53:47,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:53:47,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 19:53:47,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 19:53:47,336 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 33 [2022-12-12 19:53:47,337 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 45 transitions, 290 flow. Second operand has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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 19:53:47,337 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:53:47,337 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 33 [2022-12-12 19:53:47,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:53:47,498 INFO L130 PetriNetUnfolder]: 759/1173 cut-off events. [2022-12-12 19:53:47,498 INFO L131 PetriNetUnfolder]: For 114/118 co-relation queries the response was YES. [2022-12-12 19:53:47,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4838 conditions, 1173 events. 759/1173 cut-off events. For 114/118 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 4422 event pairs, 381 based on Foata normal form. 56/1040 useless extension candidates. Maximal degree in co-relation 2378. Up to 1167 conditions per place. [2022-12-12 19:53:47,504 INFO L137 encePairwiseOnDemand]: 27/33 looper letters, 43 selfloop transitions, 2 changer transitions 35/81 dead transitions. [2022-12-12 19:53:47,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 81 transitions, 690 flow [2022-12-12 19:53:47,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 19:53:47,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 19:53:47,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 75 transitions. [2022-12-12 19:53:47,507 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2022-12-12 19:53:47,508 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 8 predicate places. [2022-12-12 19:53:47,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 81 transitions, 690 flow [2022-12-12 19:53:47,513 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 41 places, 46 transitions, 386 flow [2022-12-12 19:53:47,514 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 46 transitions, 386 flow [2022-12-12 19:53:47,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.0) internal successors, (28), 4 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 19:53:47,514 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:53:47,514 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:53:47,514 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 19:53:47,515 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 19:53:47,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:53:47,515 INFO L85 PathProgramCache]: Analyzing trace with hash 973479154, now seen corresponding path program 1 times [2022-12-12 19:53:47,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:53:47,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245387603] [2022-12-12 19:53:47,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:53:47,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:53:47,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:53:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 19:53:47,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:53:47,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245387603] [2022-12-12 19:53:47,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245387603] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:53:47,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:53:47,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 19:53:47,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911924235] [2022-12-12 19:53:47,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:53:47,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 19:53:47,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:53:47,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 19:53:47,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 19:53:47,602 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 33 [2022-12-12 19:53:47,602 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 46 transitions, 386 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 19:53:47,602 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:53:47,602 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 33 [2022-12-12 19:53:47,602 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:53:47,783 INFO L130 PetriNetUnfolder]: 835/1241 cut-off events. [2022-12-12 19:53:47,783 INFO L131 PetriNetUnfolder]: For 151/157 co-relation queries the response was YES. [2022-12-12 19:53:47,784 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6346 conditions, 1241 events. 835/1241 cut-off events. For 151/157 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4479 event pairs, 258 based on Foata normal form. 32/1032 useless extension candidates. Maximal degree in co-relation 2958. Up to 1237 conditions per place. [2022-12-12 19:53:47,789 INFO L137 encePairwiseOnDemand]: 28/33 looper letters, 44 selfloop transitions, 2 changer transitions 33/80 dead transitions. [2022-12-12 19:53:47,789 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 44 places, 80 transitions, 837 flow [2022-12-12 19:53:47,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 19:53:47,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 19:53:47,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 57 transitions. [2022-12-12 19:53:47,790 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4318181818181818 [2022-12-12 19:53:47,790 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 9 predicate places. [2022-12-12 19:53:47,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 80 transitions, 837 flow [2022-12-12 19:53:47,794 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 43 places, 47 transitions, 486 flow [2022-12-12 19:53:47,795 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 47 transitions, 486 flow [2022-12-12 19:53:47,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 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 19:53:47,795 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:53:47,795 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:53:47,795 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 19:53:47,795 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 19:53:47,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:53:47,796 INFO L85 PathProgramCache]: Analyzing trace with hash -468057538, now seen corresponding path program 1 times [2022-12-12 19:53:47,796 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:53:47,796 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [998922944] [2022-12-12 19:53:47,796 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:53:47,796 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:53:47,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:53:47,886 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:53:47,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:53:47,887 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [998922944] [2022-12-12 19:53:47,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [998922944] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:53:47,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 19:53:47,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 19:53:47,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537501628] [2022-12-12 19:53:47,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:53:47,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 19:53:47,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:53:47,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 19:53:47,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 19:53:47,888 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 33 [2022-12-12 19:53:47,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 47 transitions, 486 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 19:53:47,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:53:47,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 33 [2022-12-12 19:53:47,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:53:48,058 INFO L130 PetriNetUnfolder]: 839/1252 cut-off events. [2022-12-12 19:53:48,059 INFO L131 PetriNetUnfolder]: For 374/398 co-relation queries the response was YES. [2022-12-12 19:53:48,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7544 conditions, 1252 events. 839/1252 cut-off events. For 374/398 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 4717 event pairs, 145 based on Foata normal form. 1/984 useless extension candidates. Maximal degree in co-relation 6253. Up to 1229 conditions per place. [2022-12-12 19:53:48,067 INFO L137 encePairwiseOnDemand]: 30/33 looper letters, 66 selfloop transitions, 3 changer transitions 9/79 dead transitions. [2022-12-12 19:53:48,067 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 79 transitions, 983 flow [2022-12-12 19:53:48,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 19:53:48,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 19:53:48,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 54 transitions. [2022-12-12 19:53:48,068 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2022-12-12 19:53:48,069 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 10 predicate places. [2022-12-12 19:53:48,069 INFO L82 GeneralOperation]: Start removeDead. Operand has 45 places, 79 transitions, 983 flow [2022-12-12 19:53:48,076 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 45 places, 70 transitions, 863 flow [2022-12-12 19:53:48,076 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 70 transitions, 863 flow [2022-12-12 19:53:48,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 19:53:48,076 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:53:48,076 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:53:48,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 19:53:48,077 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 19:53:48,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:53:48,077 INFO L85 PathProgramCache]: Analyzing trace with hash 944054393, now seen corresponding path program 1 times [2022-12-12 19:53:48,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:53:48,077 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230069201] [2022-12-12 19:53:48,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:53:48,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:53:48,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:53:48,425 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 19:53:48,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:53:48,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230069201] [2022-12-12 19:53:48,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230069201] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:53:48,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2006818049] [2022-12-12 19:53:48,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:53:48,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:53:48,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:53:48,429 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 19:53:48,460 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 19:53:48,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:53:48,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-12 19:53:48,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:53:48,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:53:48,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-12 19:53:48,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2006818049] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 19:53:48,614 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-12 19:53:48,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 10 [2022-12-12 19:53:48,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167016210] [2022-12-12 19:53:48,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 19:53:48,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 19:53:48,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:53:48,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 19:53:48,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-12-12 19:53:48,615 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-12 19:53:48,615 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 70 transitions, 863 flow. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 19:53:48,615 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:53:48,615 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-12 19:53:48,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:53:48,741 INFO L130 PetriNetUnfolder]: 552/829 cut-off events. [2022-12-12 19:53:48,741 INFO L131 PetriNetUnfolder]: For 717/717 co-relation queries the response was YES. [2022-12-12 19:53:48,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5624 conditions, 829 events. 552/829 cut-off events. For 717/717 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2646 event pairs, 125 based on Foata normal form. 24/708 useless extension candidates. Maximal degree in co-relation 4802. Up to 771 conditions per place. [2022-12-12 19:53:48,747 INFO L137 encePairwiseOnDemand]: 30/33 looper letters, 54 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2022-12-12 19:53:48,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 56 transitions, 794 flow [2022-12-12 19:53:48,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 19:53:48,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 19:53:48,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2022-12-12 19:53:48,748 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.42424242424242425 [2022-12-12 19:53:48,749 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 12 predicate places. [2022-12-12 19:53:48,749 INFO L82 GeneralOperation]: Start removeDead. Operand has 47 places, 56 transitions, 794 flow [2022-12-12 19:53:48,753 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 47 places, 56 transitions, 794 flow [2022-12-12 19:53:48,754 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 56 transitions, 794 flow [2022-12-12 19:53:48,754 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 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 19:53:48,754 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:53:48,754 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:53:48,773 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 19:53:48,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-12 19:53:48,958 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 19:53:48,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:53:48,959 INFO L85 PathProgramCache]: Analyzing trace with hash 584239853, now seen corresponding path program 2 times [2022-12-12 19:53:48,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:53:48,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659840065] [2022-12-12 19:53:48,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:53:48,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:53:49,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:53:49,276 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:53:49,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:53:49,276 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659840065] [2022-12-12 19:53:49,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659840065] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:53:49,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424153476] [2022-12-12 19:53:49,277 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 19:53:49,277 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:53:49,277 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:53:49,278 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 19:53:49,280 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 19:53:49,469 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 19:53:49,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 19:53:49,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-12 19:53:49,474 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:53:49,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 146 [2022-12-12 19:53:49,671 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:53:49,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:53:49,782 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 174 [2022-12-12 19:53:49,882 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:53:49,882 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424153476] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 19:53:49,883 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 19:53:49,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 9 [2022-12-12 19:53:49,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736703413] [2022-12-12 19:53:49,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 19:53:49,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-12 19:53:49,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:53:49,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-12 19:53:49,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-12-12 19:53:49,884 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 33 [2022-12-12 19:53:49,884 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 56 transitions, 794 flow. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 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 19:53:49,884 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:53:49,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 33 [2022-12-12 19:53:49,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:53:50,198 INFO L130 PetriNetUnfolder]: 1020/1510 cut-off events. [2022-12-12 19:53:50,198 INFO L131 PetriNetUnfolder]: For 2688/2688 co-relation queries the response was YES. [2022-12-12 19:53:50,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11655 conditions, 1510 events. 1020/1510 cut-off events. For 2688/2688 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5625 event pairs, 91 based on Foata normal form. 1/1224 useless extension candidates. Maximal degree in co-relation 10958. Up to 1408 conditions per place. [2022-12-12 19:53:50,212 INFO L137 encePairwiseOnDemand]: 27/33 looper letters, 100 selfloop transitions, 10 changer transitions 28/140 dead transitions. [2022-12-12 19:53:50,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 140 transitions, 2297 flow [2022-12-12 19:53:50,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-12 19:53:50,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-12 19:53:50,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2022-12-12 19:53:50,215 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4015151515151515 [2022-12-12 19:53:50,216 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 19 predicate places. [2022-12-12 19:53:50,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 54 places, 140 transitions, 2297 flow [2022-12-12 19:53:50,226 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 53 places, 112 transitions, 1828 flow [2022-12-12 19:53:50,226 INFO L495 AbstractCegarLoop]: Abstraction has has 53 places, 112 transitions, 1828 flow [2022-12-12 19:53:50,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 10 states have internal predecessors, (58), 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 19:53:50,227 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:53:50,227 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:53:50,234 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-12 19:53:50,433 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,SelfDestructingSolverStorable6 [2022-12-12 19:53:50,433 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 19:53:50,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:53:50,434 INFO L85 PathProgramCache]: Analyzing trace with hash 1815424178, now seen corresponding path program 3 times [2022-12-12 19:53:50,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:53:50,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1769650705] [2022-12-12 19:53:50,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:53:50,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:53:50,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:53:50,763 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 19:53:50,763 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:53:50,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1769650705] [2022-12-12 19:53:50,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1769650705] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:53:50,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [514368040] [2022-12-12 19:53:50,765 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 19:53:50,765 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:53:50,765 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:53:50,766 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 19:53:50,769 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 19:53:50,911 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-12 19:53:50,911 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 19:53:50,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-12 19:53:50,916 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:53:51,062 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 146 [2022-12-12 19:53:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:53:51,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:53:51,149 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 174 [2022-12-12 19:53:51,290 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-12 19:53:51,290 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [514368040] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 19:53:51,290 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 19:53:51,290 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 17 [2022-12-12 19:53:51,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248367431] [2022-12-12 19:53:51,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 19:53:51,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 19:53:51,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:53:51,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 19:53:51,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=230, Unknown=0, NotChecked=0, Total=306 [2022-12-12 19:53:51,293 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-12 19:53:51,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 53 places, 112 transitions, 1828 flow. Second operand has 18 states, 18 states have (on average 4.0) internal successors, (72), 17 states have internal predecessors, (72), 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 19:53:51,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:53:51,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-12 19:53:51,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:53:51,709 INFO L130 PetriNetUnfolder]: 1160/1775 cut-off events. [2022-12-12 19:53:51,709 INFO L131 PetriNetUnfolder]: For 5220/5220 co-relation queries the response was YES. [2022-12-12 19:53:51,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15344 conditions, 1775 events. 1160/1775 cut-off events. For 5220/5220 co-relation queries the response was YES. Maximal size of possible extension queue 62. Compared 7036 event pairs, 84 based on Foata normal form. 84/1611 useless extension candidates. Maximal degree in co-relation 10294. Up to 1631 conditions per place. [2022-12-12 19:53:51,719 INFO L137 encePairwiseOnDemand]: 25/33 looper letters, 119 selfloop transitions, 13 changer transitions 98/230 dead transitions. [2022-12-12 19:53:51,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 230 transitions, 4218 flow [2022-12-12 19:53:51,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-12 19:53:51,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-12 19:53:51,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 91 transitions. [2022-12-12 19:53:51,720 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.27575757575757576 [2022-12-12 19:53:51,721 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 27 predicate places. [2022-12-12 19:53:51,721 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 230 transitions, 4218 flow [2022-12-12 19:53:51,729 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 132 transitions, 2421 flow [2022-12-12 19:53:51,730 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 132 transitions, 2421 flow [2022-12-12 19:53:51,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.0) internal successors, (72), 17 states have internal predecessors, (72), 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 19:53:51,730 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:53:51,730 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:53:51,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-12 19:53:51,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:53:51,936 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 19:53:51,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:53:51,936 INFO L85 PathProgramCache]: Analyzing trace with hash -1786264761, now seen corresponding path program 4 times [2022-12-12 19:53:51,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:53:51,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007202692] [2022-12-12 19:53:51,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:53:51,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:53:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:53:52,675 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 19:53:52,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:53:52,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007202692] [2022-12-12 19:53:52,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007202692] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:53:52,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1304932859] [2022-12-12 19:53:52,676 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-12 19:53:52,676 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:53:52,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:53:52,677 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 19:53:52,679 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 19:53:52,805 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-12 19:53:52,805 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 19:53:52,807 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-12 19:53:52,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:53:52,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 154 treesize of output 146 [2022-12-12 19:53:52,998 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 19:53:52,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:53:53,063 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 174 [2022-12-12 19:53:53,190 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 19:53:53,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1304932859] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 19:53:53,191 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 19:53:53,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 24 [2022-12-12 19:53:53,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871615523] [2022-12-12 19:53:53,191 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 19:53:53,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-12-12 19:53:53,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:53:53,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-12-12 19:53:53,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=479, Unknown=0, NotChecked=0, Total=600 [2022-12-12 19:53:53,192 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-12 19:53:53,192 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 132 transitions, 2421 flow. Second operand has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 states have internal predecessors, (72), 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 19:53:53,192 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:53:53,192 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-12 19:53:53,193 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:53:54,571 INFO L130 PetriNetUnfolder]: 2649/3845 cut-off events. [2022-12-12 19:53:54,571 INFO L131 PetriNetUnfolder]: For 9754/9754 co-relation queries the response was YES. [2022-12-12 19:53:54,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36972 conditions, 3845 events. 2649/3845 cut-off events. For 9754/9754 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 16789 event pairs, 96 based on Foata normal form. 0/3153 useless extension candidates. Maximal degree in co-relation 23972. Up to 3581 conditions per place. [2022-12-12 19:53:54,587 INFO L137 encePairwiseOnDemand]: 23/33 looper letters, 228 selfloop transitions, 26 changer transitions 199/453 dead transitions. [2022-12-12 19:53:54,588 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 453 transitions, 9135 flow [2022-12-12 19:53:54,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-12-12 19:53:54,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-12-12 19:53:54,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 270 transitions. [2022-12-12 19:53:54,590 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2922077922077922 [2022-12-12 19:53:54,591 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 49 predicate places. [2022-12-12 19:53:54,591 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 453 transitions, 9135 flow [2022-12-12 19:53:54,606 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 254 transitions, 5173 flow [2022-12-12 19:53:54,606 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 254 transitions, 5173 flow [2022-12-12 19:53:54,607 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 2.88) internal successors, (72), 24 states have internal predecessors, (72), 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 19:53:54,607 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:53:54,607 INFO L214 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:53:54,615 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 19:53:54,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:53:54,815 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 19:53:54,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:53:54,815 INFO L85 PathProgramCache]: Analyzing trace with hash 609713977, now seen corresponding path program 5 times [2022-12-12 19:53:54,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:53:54,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735592625] [2022-12-12 19:53:54,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:53:54,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:53:54,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:53:55,553 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 19:53:55,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:53:55,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735592625] [2022-12-12 19:53:55,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735592625] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:53:55,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1552069644] [2022-12-12 19:53:55,554 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-12 19:53:55,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:53:55,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:53:55,556 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 19:53:55,558 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 19:53:55,696 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-12-12 19:53:55,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 19:53:55,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-12 19:53:55,703 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:53:56,211 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 19:53:56,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 272 treesize of output 434 [2022-12-12 19:54:10,589 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-12 19:54:10,589 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:54:11,014 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-12 19:54:11,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1552069644] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 19:54:11,014 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 19:54:11,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 7] total 23 [2022-12-12 19:54:11,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373388935] [2022-12-12 19:54:11,015 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 19:54:11,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-12 19:54:11,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:54:11,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-12 19:54:11,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-12-12 19:54:11,016 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-12 19:54:11,016 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 254 transitions, 5173 flow. Second operand has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 24 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 19:54:11,016 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:54:11,016 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-12 19:54:11,016 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:54:15,141 INFO L130 PetriNetUnfolder]: 3187/4705 cut-off events. [2022-12-12 19:54:15,142 INFO L131 PetriNetUnfolder]: For 9820/9820 co-relation queries the response was YES. [2022-12-12 19:54:15,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50784 conditions, 4705 events. 3187/4705 cut-off events. For 9820/9820 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 21961 event pairs, 173 based on Foata normal form. 4/3857 useless extension candidates. Maximal degree in co-relation 32047. Up to 4449 conditions per place. [2022-12-12 19:54:15,158 INFO L137 encePairwiseOnDemand]: 20/33 looper letters, 220 selfloop transitions, 55 changer transitions 359/634 dead transitions. [2022-12-12 19:54:15,158 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 101 places, 634 transitions, 14203 flow [2022-12-12 19:54:15,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-12 19:54:15,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-12 19:54:15,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 318 transitions. [2022-12-12 19:54:15,160 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.3322884012539185 [2022-12-12 19:54:15,160 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 66 predicate places. [2022-12-12 19:54:15,160 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 634 transitions, 14203 flow [2022-12-12 19:54:15,174 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 275 transitions, 6116 flow [2022-12-12 19:54:15,175 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 275 transitions, 6116 flow [2022-12-12 19:54:15,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 2.739130434782609) internal successors, (63), 24 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 19:54:15,175 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:54:15,175 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:54:15,181 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 19:54:15,381 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,SelfDestructingSolverStorable9 [2022-12-12 19:54:15,383 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 19:54:15,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:54:15,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1835337292, now seen corresponding path program 6 times [2022-12-12 19:54:15,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:54:15,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135044212] [2022-12-12 19:54:15,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:54:15,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:54:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:54:15,865 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-12 19:54:15,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:54:15,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135044212] [2022-12-12 19:54:15,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135044212] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:54:15,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605725835] [2022-12-12 19:54:15,866 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-12 19:54:15,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:54:15,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:54:15,867 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 19:54:15,905 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 19:54:16,156 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-12 19:54:16,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 19:54:16,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-12 19:54:16,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:54:16,300 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 7 [2022-12-12 19:54:16,323 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 19:54:16,323 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:54:16,445 INFO L321 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2022-12-12 19:54:16,446 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 15 [2022-12-12 19:54:16,480 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-12-12 19:54:16,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605725835] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 19:54:16,480 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 19:54:16,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 18 [2022-12-12 19:54:16,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138076619] [2022-12-12 19:54:16,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 19:54:16,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-12 19:54:16,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:54:16,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-12 19:54:16,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-12-12 19:54:16,483 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-12 19:54:16,483 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 275 transitions, 6116 flow. Second operand has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 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 19:54:16,483 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:54:16,483 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-12 19:54:16,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:54:18,373 INFO L130 PetriNetUnfolder]: 3415/5269 cut-off events. [2022-12-12 19:54:18,374 INFO L131 PetriNetUnfolder]: For 11780/11780 co-relation queries the response was YES. [2022-12-12 19:54:18,378 INFO L83 FinitePrefix]: Finished finitePrefix Result has 61179 conditions, 5269 events. 3415/5269 cut-off events. For 11780/11780 co-relation queries the response was YES. Maximal size of possible extension queue 219. Compared 27858 event pairs, 130 based on Foata normal form. 53/4627 useless extension candidates. Maximal degree in co-relation 57606. Up to 5179 conditions per place. [2022-12-12 19:54:18,404 INFO L137 encePairwiseOnDemand]: 21/33 looper letters, 589 selfloop transitions, 280 changer transitions 40/909 dead transitions. [2022-12-12 19:54:18,404 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 909 transitions, 21720 flow [2022-12-12 19:54:18,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-12 19:54:18,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-12-12 19:54:18,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 377 transitions. [2022-12-12 19:54:18,406 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.24835309617918314 [2022-12-12 19:54:18,407 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 91 predicate places. [2022-12-12 19:54:18,407 INFO L82 GeneralOperation]: Start removeDead. Operand has 126 places, 909 transitions, 21720 flow [2022-12-12 19:54:18,487 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 125 places, 869 transitions, 20727 flow [2022-12-12 19:54:18,488 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 869 transitions, 20727 flow [2022-12-12 19:54:18,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 4.388888888888889) internal successors, (79), 18 states have internal predecessors, (79), 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 19:54:18,488 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:54:18,488 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:54:18,496 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 19:54:18,694 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:54:18,694 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 19:54:18,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:54:18,695 INFO L85 PathProgramCache]: Analyzing trace with hash 1028231525, now seen corresponding path program 7 times [2022-12-12 19:54:18,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:54:18,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191788530] [2022-12-12 19:54:18,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:54:18,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:54:18,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:54:19,467 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-12 19:54:19,467 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:54:19,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191788530] [2022-12-12 19:54:19,467 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191788530] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:54:19,467 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074838365] [2022-12-12 19:54:19,467 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-12 19:54:19,468 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:54:19,468 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:54:19,469 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 19:54:19,499 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 19:54:19,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:54:19,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 58 conjunts are in the unsatisfiable core [2022-12-12 19:54:19,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:54:20,484 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 19:54:20,485 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 89 treesize of output 81 [2022-12-12 19:54:20,954 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 19 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-12 19:54:20,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:54:21,074 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 174 [2022-12-12 19:54:22,331 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 19:54:22,331 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 13 [2022-12-12 19:54:22,375 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-12 19:54:22,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074838365] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 19:54:22,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 19:54:22,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 20, 13] total 43 [2022-12-12 19:54:22,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190513273] [2022-12-12 19:54:22,376 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 19:54:22,376 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-12-12 19:54:22,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:54:22,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-12-12 19:54:22,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=392, Invalid=1414, Unknown=0, NotChecked=0, Total=1806 [2022-12-12 19:54:22,378 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-12 19:54:22,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 869 transitions, 20727 flow. Second operand has 43 states, 43 states have (on average 2.255813953488372) internal successors, (97), 43 states have internal predecessors, (97), 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 19:54:22,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:54:22,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-12 19:54:22,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:54:55,557 INFO L130 PetriNetUnfolder]: 39414/57949 cut-off events. [2022-12-12 19:54:55,557 INFO L131 PetriNetUnfolder]: For 122338/122338 co-relation queries the response was YES. [2022-12-12 19:54:55,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733361 conditions, 57949 events. 39414/57949 cut-off events. For 122338/122338 co-relation queries the response was YES. Maximal size of possible extension queue 2042. Compared 399236 event pairs, 1060 based on Foata normal form. 252/48216 useless extension candidates. Maximal degree in co-relation 350319. Up to 57691 conditions per place. [2022-12-12 19:54:56,136 INFO L137 encePairwiseOnDemand]: 17/33 looper letters, 7299 selfloop transitions, 3267 changer transitions 482/11048 dead transitions. [2022-12-12 19:54:56,137 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 11048 transitions, 286621 flow [2022-12-12 19:54:56,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 176 states. [2022-12-12 19:54:56,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2022-12-12 19:54:56,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 1954 transitions. [2022-12-12 19:54:56,148 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.33643250688705234 [2022-12-12 19:54:56,149 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 265 predicate places. [2022-12-12 19:54:56,149 INFO L82 GeneralOperation]: Start removeDead. Operand has 300 places, 11048 transitions, 286621 flow [2022-12-12 19:54:56,559 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 296 places, 10566 transitions, 273741 flow [2022-12-12 19:54:56,559 INFO L495 AbstractCegarLoop]: Abstraction has has 296 places, 10566 transitions, 273741 flow [2022-12-12 19:54:56,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 43 states have (on average 2.255813953488372) internal successors, (97), 43 states have internal predecessors, (97), 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 19:54:56,560 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:54:56,560 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:54:56,567 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 19:54:56,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:54:56,767 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 19:54:56,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:54:56,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1301720197, now seen corresponding path program 8 times [2022-12-12 19:54:56,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:54:56,769 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844967248] [2022-12-12 19:54:56,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:54:56,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:54:56,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:54:57,275 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-12 19:54:57,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:54:57,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844967248] [2022-12-12 19:54:57,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844967248] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:54:57,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [882636381] [2022-12-12 19:54:57,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-12 19:54:57,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:54:57,276 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:54:57,277 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 19:54:57,279 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 19:54:57,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-12 19:54:57,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 19:54:57,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 31 conjunts are in the unsatisfiable core [2022-12-12 19:54:57,521 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:54:57,629 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-12 19:54:57,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-12-12 19:54:57,891 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 19:54:57,892 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 210 treesize of output 256 [2022-12-12 19:54:58,608 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 19:54:58,608 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 19:54:59,220 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 19:54:59,220 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 104 treesize of output 71 [2022-12-12 19:54:59,223 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 71 treesize of output 64 [2022-12-12 19:54:59,225 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 64 treesize of output 58 [2022-12-12 19:54:59,428 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-12 19:54:59,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [882636381] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 19:54:59,428 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 19:54:59,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 13] total 32 [2022-12-12 19:54:59,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120015093] [2022-12-12 19:54:59,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 19:54:59,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-12-12 19:54:59,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 19:54:59,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-12-12 19:54:59,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=873, Unknown=1, NotChecked=0, Total=992 [2022-12-12 19:54:59,429 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-12 19:54:59,430 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 296 places, 10566 transitions, 273741 flow. Second operand has 32 states, 32 states have (on average 3.03125) internal successors, (97), 32 states have internal predecessors, (97), 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 19:54:59,430 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 19:54:59,430 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-12 19:54:59,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 19:59:13,560 INFO L130 PetriNetUnfolder]: 85826/123138 cut-off events. [2022-12-12 19:59:13,560 INFO L131 PetriNetUnfolder]: For 220626/220626 co-relation queries the response was YES. [2022-12-12 19:59:13,741 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1684942 conditions, 123138 events. 85826/123138 cut-off events. For 220626/220626 co-relation queries the response was YES. Maximal size of possible extension queue 4073. Compared 881899 event pairs, 1124 based on Foata normal form. 15/99862 useless extension candidates. Maximal degree in co-relation 886080. Up to 122850 conditions per place. [2022-12-12 19:59:14,256 INFO L137 encePairwiseOnDemand]: 21/33 looper letters, 9722 selfloop transitions, 3115 changer transitions 15166/28003 dead transitions. [2022-12-12 19:59:14,256 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 28003 transitions, 780757 flow [2022-12-12 19:59:14,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-12-12 19:59:14,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2022-12-12 19:59:14,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 419 transitions. [2022-12-12 19:59:14,258 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.27602108036890644 [2022-12-12 19:59:14,258 INFO L295 CegarLoopForPetriNet]: 35 programPoint places, 306 predicate places. [2022-12-12 19:59:14,258 INFO L82 GeneralOperation]: Start removeDead. Operand has 341 places, 28003 transitions, 780757 flow [2022-12-12 19:59:14,899 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 317 places, 12837 transitions, 358107 flow [2022-12-12 19:59:14,899 INFO L495 AbstractCegarLoop]: Abstraction has has 317 places, 12837 transitions, 358107 flow [2022-12-12 19:59:14,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 3.03125) internal successors, (97), 32 states have internal predecessors, (97), 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 19:59:14,899 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 19:59:14,900 INFO L214 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 19:59:14,906 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 19:59:15,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-12 19:59:15,106 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 19:59:15,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 19:59:15,107 INFO L85 PathProgramCache]: Analyzing trace with hash -618449901, now seen corresponding path program 9 times [2022-12-12 19:59:15,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 19:59:15,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214652829] [2022-12-12 19:59:15,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 19:59:15,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 19:59:15,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 19:59:15,823 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-12 19:59:15,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 19:59:15,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214652829] [2022-12-12 19:59:15,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214652829] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-12 19:59:15,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1254316824] [2022-12-12 19:59:15,823 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-12 19:59:15,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-12 19:59:15,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 19:59:15,825 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-12 19:59:15,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-12 19:59:16,193 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-12 19:59:16,193 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-12 19:59:16,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 37 conjunts are in the unsatisfiable core [2022-12-12 19:59:16,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-12 19:59:16,357 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 152 treesize of output 144 [2022-12-12 19:59:17,030 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 19:59:17,031 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 0 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 277 treesize of output 439 [2022-12-12 20:01:42,917 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-12 20:01:42,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-12 20:01:43,365 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-12-12 20:01:43,367 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 9 [2022-12-12 20:01:43,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 174 [2022-12-12 20:01:43,581 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-12-12 20:01:43,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1254316824] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-12 20:01:43,581 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-12 20:01:43,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 16, 11] total 35 [2022-12-12 20:01:43,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575346936] [2022-12-12 20:01:43,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-12 20:01:43,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-12-12 20:01:43,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 20:01:43,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-12-12 20:01:43,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=185, Invalid=1005, Unknown=0, NotChecked=0, Total=1190 [2022-12-12 20:01:43,583 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 33 [2022-12-12 20:01:43,583 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 317 places, 12837 transitions, 358107 flow. Second operand has 35 states, 35 states have (on average 2.8285714285714287) internal successors, (99), 35 states have internal predecessors, (99), 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 20:01:43,583 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 20:01:43,583 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 33 [2022-12-12 20:01:43,583 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-12 20:07:14,094 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-12 20:07:14,094 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 20:07:14,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 134 states. [2022-12-12 20:07:14,261 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-12 20:07:14,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-12 20:07:14,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-12-12 20:07:14,462 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (35states, 0/33 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1828630 conditions, 125104 events (85757/125103 cut-off events. For 318185/318185 co-relation queries the response was YES. Maximal size of possible extension queue 4243. Compared 951365 event pairs, 1102 based on Foata normal form. 904/106545 useless extension candidates. Maximal degree in co-relation 849666. Up to 124764 conditions per place.). [2022-12-12 20:07:14,463 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-12 20:07:14,463 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-12 20:07:14,464 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-12 20:07:14,464 INFO L445 BasicCegarLoop]: Path program histogram: [9, 1, 1, 1, 1, 1] [2022-12-12 20:07:14,466 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 20:07:14,466 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 20:07:14,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 08:07:14 BasicIcfg [2022-12-12 20:07:14,468 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 20:07:14,469 INFO L158 Benchmark]: Toolchain (without parser) took 817527.33ms. Allocated memory was 187.7MB in the beginning and 2.8GB in the end (delta: 2.6GB). Free memory was 163.7MB in the beginning and 1.2GB in the end (delta: -994.8MB). Peak memory consumption was 2.6GB. Max. memory is 8.0GB. [2022-12-12 20:07:14,469 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 187.7MB. Free memory was 164.1MB in the beginning and 164.0MB in the end (delta: 87.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 20:07:14,470 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.06ms. Allocated memory is still 187.7MB. Free memory was 163.6MB in the beginning and 148.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-12 20:07:14,470 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.45ms. Allocated memory is still 187.7MB. Free memory was 148.9MB in the beginning and 146.3MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. [2022-12-12 20:07:14,470 INFO L158 Benchmark]: Boogie Preprocessor took 44.54ms. Allocated memory is still 187.7MB. Free memory was 146.3MB in the beginning and 144.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 20:07:14,471 INFO L158 Benchmark]: RCFGBuilder took 674.35ms. Allocated memory is still 187.7MB. Free memory was 144.2MB in the beginning and 104.3MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. [2022-12-12 20:07:14,471 INFO L158 Benchmark]: TraceAbstraction took 816529.06ms. Allocated memory was 187.7MB in the beginning and 2.8GB in the end (delta: 2.6GB). Free memory was 103.3MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. [2022-12-12 20:07:14,472 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 187.7MB. Free memory was 164.1MB in the beginning and 164.0MB in the end (delta: 87.6kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 221.06ms. Allocated memory is still 187.7MB. Free memory was 163.6MB in the beginning and 148.9MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 53.45ms. Allocated memory is still 187.7MB. Free memory was 148.9MB in the beginning and 146.3MB in the end (delta: 2.6MB). Peak memory consumption was 3.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 44.54ms. Allocated memory is still 187.7MB. Free memory was 146.3MB in the beginning and 144.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 674.35ms. Allocated memory is still 187.7MB. Free memory was 144.2MB in the beginning and 104.3MB in the end (delta: 39.8MB). Peak memory consumption was 39.8MB. Max. memory is 8.0GB. * TraceAbstraction took 816529.06ms. Allocated memory was 187.7MB in the beginning and 2.8GB in the end (delta: 2.6GB). Free memory was 103.3MB in the beginning and 1.2GB in the end (delta: -1.1GB). Peak memory consumption was 2.5GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 8.1s, 228 PlacesBefore, 35 PlacesAfterwards, 243 TransitionsBefore, 33 TransitionsAfterwards, 2820 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 151 TrivialYvCompositions, 42 ConcurrentYvCompositions, 15 ChoiceCompositions, 210 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 1998, independent: 1968, independent conditional: 1968, independent unconditional: 0, dependent: 30, dependent conditional: 30, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 1998, independent: 1968, independent conditional: 0, independent unconditional: 1968, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 1998, independent: 1968, independent conditional: 0, independent unconditional: 1968, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 1998, independent: 1968, independent conditional: 0, independent unconditional: 1968, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1666, independent: 1651, independent conditional: 0, independent unconditional: 1651, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1666, independent: 1643, independent conditional: 0, independent unconditional: 1643, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 23, independent: 8, independent conditional: 0, independent unconditional: 8, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 108, independent: 32, independent conditional: 0, independent unconditional: 32, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 1998, independent: 317, independent conditional: 0, independent unconditional: 317, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 1666, unknown conditional: 0, unknown unconditional: 1666] , Statistics on independence cache: Total cache size (in pairs): 2751, Positive cache size: 2736, Positive conditional cache size: 0, Positive unconditional cache size: 2736, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - TimeoutResultAtElement [Line: 156]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (35states, 0/33 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1828630 conditions, 125104 events (85757/125103 cut-off events. For 318185/318185 co-relation queries the response was YES. Maximal size of possible extension queue 4243. Compared 951365 event pairs, 1102 based on Foata normal form. 904/106545 useless extension candidates. Maximal degree in co-relation 849666. Up to 124764 conditions per place.). - TimeoutResultAtElement [Line: 148]: 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 (35states, 0/33 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1828630 conditions, 125104 events (85757/125103 cut-off events. For 318185/318185 co-relation queries the response was YES. Maximal size of possible extension queue 4243. Compared 951365 event pairs, 1102 based on Foata normal form. 904/106545 useless extension candidates. Maximal degree in co-relation 849666. Up to 124764 conditions per place.). - TimeoutResultAtElement [Line: 150]: 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 (35states, 0/33 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1828630 conditions, 125104 events (85757/125103 cut-off events. For 318185/318185 co-relation queries the response was YES. Maximal size of possible extension queue 4243. Compared 951365 event pairs, 1102 based on Foata normal form. 904/106545 useless extension candidates. Maximal degree in co-relation 849666. Up to 124764 conditions per place.). - TimeoutResultAtElement [Line: 149]: 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 (35states, 0/33 universal loopers) in iteration 14,while PetriNetUnfolder was constructing finite prefix that currently has 1828630 conditions, 125104 events (85757/125103 cut-off events. For 318185/318185 co-relation queries the response was YES. Maximal size of possible extension queue 4243. Compared 951365 event pairs, 1102 based on Foata normal form. 904/106545 useless extension candidates. Maximal degree in co-relation 849666. Up to 124764 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 277 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 1.2s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 816.4s, OverallIterations: 14, TraceHistogramMax: 3, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 628.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 8.3s, HoareTripleCheckerStatistics: 1 mSolverCounterUnknown, 6599 SdHoareTripleChecker+Valid, 9.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6599 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 7.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 1227 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 13116 IncrementalHoareTripleChecker+Invalid, 14344 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1227 mSolverCounterUnsat, 1 mSDtfsCounter, 13116 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1170 GetRequests, 532 SyntacticMatches, 11 SemanticMatches, 627 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33660 ImplicationChecksByTransitivity, 41.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=358107occurred in iteration=13, InterpolantAutomatonStates: 365, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 13 MinimizatonAttempts, 451706 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.7s SatisfiabilityAnalysisTime, 173.7s InterpolantComputationTime, 722 NumberOfCodeBlocks, 709 NumberOfCodeBlocksAsserted, 33 NumberOfCheckSat, 963 ConstructedInterpolants, 5 QuantifiedInterpolants, 10082 SizeOfPredicates, 343 NumberOfNonLiveVariables, 3667 ConjunctsInSsa, 205 ConjunctsInUnsatCore, 31 InterpolantComputations, 6 PerfectInterpolantSequences, 145/329 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