/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 15:34:52,990 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 15:34:52,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 15:34:53,022 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 15:34:53,023 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 15:34:53,023 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 15:34:53,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 15:34:53,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 15:34:53,027 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 15:34:53,027 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 15:34:53,028 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 15:34:53,029 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 15:34:53,029 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 15:34:53,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 15:34:53,030 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 15:34:53,034 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 15:34:53,035 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 15:34:53,038 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 15:34:53,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 15:34:53,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 15:34:53,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 15:34:53,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 15:34:53,054 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 15:34:53,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 15:34:53,056 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 15:34:53,056 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 15:34:53,056 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 15:34:53,057 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 15:34:53,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 15:34:53,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-12 15:34:53,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-12 15:34:53,058 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-12 15:34:53,059 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-12 15:34:53,059 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-12 15:34:53,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-12 15:34:53,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-12 15:34:53,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-12 15:34:53,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-12 15:34:53,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 15:34:53,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 15:34:53,062 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 15:34:53,068 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 15:34:53,096 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 15:34:53,096 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 15:34:53,097 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 15:34:53,097 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 15:34:53,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 15:34:53,099 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 15:34:53,099 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 15:34:53,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 15:34:53,099 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 15:34:53,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 15:34:53,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 15:34:53,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 15:34:53,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 15:34:53,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 15:34:53,100 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 15:34:53,100 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 15:34:53,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 15:34:53,101 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 15:34:53,101 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 15:34:53,101 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 15:34:53,101 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 15:34:53,101 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 15:34:53,101 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 15:34:53,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 15:34:53,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 15:34:53,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 15:34:53,102 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 15:34:53,102 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 15:34:53,102 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 15:34:53,102 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 15:34:53,102 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-12 15:34:53,379 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 15:34:53,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 15:34:53,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 15:34:53,399 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 15:34:53,399 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 15:34:53,400 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c [2022-12-12 15:34:54,268 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 15:34:54,427 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 15:34:54,427 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c [2022-12-12 15:34:54,432 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f374a491/b0a17f77055846ad9df55cb8dcea8adc/FLAG3479ea398 [2022-12-12 15:34:54,461 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f374a491/b0a17f77055846ad9df55cb8dcea8adc [2022-12-12 15:34:54,468 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 15:34:54,469 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 15:34:54,478 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 15:34:54,479 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 15:34:54,480 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 15:34:54,481 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 03:34:54" (1/1) ... [2022-12-12 15:34:54,481 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@137e8c7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:34:54, skipping insertion in model container [2022-12-12 15:34:54,482 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 03:34:54" (1/1) ... [2022-12-12 15:34:54,486 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 15:34:54,504 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 15:34:54,597 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:34:54,601 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:34:54,602 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:34:54,604 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:34:54,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:34:54,605 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:34:54,606 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:34:54,606 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:34:54,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:34:54,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:34:54,608 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:34:54,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:34:54,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:34:54,609 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:34:54,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:34:54,610 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:34:54,611 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:34:54,611 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:34:54,611 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:34:54,611 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:34:54,611 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:34:54,612 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:34:54,628 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c[3134,3147] [2022-12-12 15:34:54,631 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 15:34:54,642 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 15:34:54,653 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:34:54,655 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:34:54,655 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:34:54,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:34:54,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:34:54,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:34:54,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:34:54,656 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:34:54,657 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:34:54,657 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:34:54,657 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:34:54,657 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:34:54,657 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:34:54,658 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:34:54,658 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:34:54,658 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:34:54,658 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:34:54,658 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:34:54,659 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:34:54,659 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:34:54,659 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-12 15:34:54,659 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-12 15:34:54,667 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bluetooth.wvr.c[3134,3147] [2022-12-12 15:34:54,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 15:34:54,678 INFO L208 MainTranslator]: Completed translation [2022-12-12 15:34:54,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:34:54 WrapperNode [2022-12-12 15:34:54,679 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 15:34:54,682 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 15:34:54,682 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 15:34:54,683 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 15:34:54,687 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:34:54" (1/1) ... [2022-12-12 15:34:54,691 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:34:54" (1/1) ... [2022-12-12 15:34:54,719 INFO L138 Inliner]: procedures = 21, calls = 48, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 119 [2022-12-12 15:34:54,720 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 15:34:54,720 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 15:34:54,720 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 15:34:54,720 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 15:34:54,726 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:34:54" (1/1) ... [2022-12-12 15:34:54,726 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:34:54" (1/1) ... [2022-12-12 15:34:54,728 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:34:54" (1/1) ... [2022-12-12 15:34:54,728 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:34:54" (1/1) ... [2022-12-12 15:34:54,731 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:34:54" (1/1) ... [2022-12-12 15:34:54,732 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:34:54" (1/1) ... [2022-12-12 15:34:54,733 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:34:54" (1/1) ... [2022-12-12 15:34:54,734 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:34:54" (1/1) ... [2022-12-12 15:34:54,735 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 15:34:54,735 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 15:34:54,736 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 15:34:54,736 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 15:34:54,736 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:34:54" (1/1) ... [2022-12-12 15:34:54,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 15:34:54,758 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 15:34:54,768 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 15:34:54,770 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 15:34:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 15:34:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-12 15:34:54,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-12 15:34:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-12 15:34:54,794 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-12 15:34:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 15:34:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 15:34:54,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 15:34:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-12 15:34:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-12 15:34:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 15:34:54,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 15:34:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-12 15:34:54,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 15:34:54,796 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 15:34:54,856 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 15:34:54,858 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 15:34:55,044 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 15:34:55,094 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 15:34:55,094 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 15:34:55,096 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 03:34:55 BoogieIcfgContainer [2022-12-12 15:34:55,096 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 15:34:55,098 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 15:34:55,098 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 15:34:55,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 15:34:55,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 03:34:54" (1/3) ... [2022-12-12 15:34:55,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ad2eb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 03:34:55, skipping insertion in model container [2022-12-12 15:34:55,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 03:34:54" (2/3) ... [2022-12-12 15:34:55,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66ad2eb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 03:34:55, skipping insertion in model container [2022-12-12 15:34:55,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 03:34:55" (3/3) ... [2022-12-12 15:34:55,101 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bluetooth.wvr.c [2022-12-12 15:34:55,115 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 15:34:55,115 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 15:34:55,115 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 15:34:55,158 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-12-12 15:34:55,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 120 places, 122 transitions, 260 flow [2022-12-12 15:34:55,261 INFO L130 PetriNetUnfolder]: 9/120 cut-off events. [2022-12-12 15:34:55,261 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 15:34:55,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 120 events. 9/120 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 47 event pairs, 0 based on Foata normal form. 0/110 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2022-12-12 15:34:55,264 INFO L82 GeneralOperation]: Start removeDead. Operand has 120 places, 122 transitions, 260 flow [2022-12-12 15:34:55,270 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 112 transitions, 236 flow [2022-12-12 15:34:55,272 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 15:34:55,296 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 112 transitions, 236 flow [2022-12-12 15:34:55,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 112 transitions, 236 flow [2022-12-12 15:34:55,317 INFO L130 PetriNetUnfolder]: 9/112 cut-off events. [2022-12-12 15:34:55,318 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 15:34:55,318 INFO L83 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 112 events. 9/112 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 86. Up to 2 conditions per place. [2022-12-12 15:34:55,320 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 112 transitions, 236 flow [2022-12-12 15:34:55,320 INFO L226 LiptonReduction]: Number of co-enabled transitions 452 [2022-12-12 15:34:58,444 INFO L241 LiptonReduction]: Total number of compositions: 92 [2022-12-12 15:34:58,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 15:34:58,458 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;@449ec8f3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 15:34:58,459 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 15:34:58,462 INFO L130 PetriNetUnfolder]: 2/20 cut-off events. [2022-12-12 15:34:58,462 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 15:34:58,462 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:34:58,463 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:34:58,463 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 15:34:58,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:34:58,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1352143916, now seen corresponding path program 1 times [2022-12-12 15:34:58,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:34:58,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1062635625] [2022-12-12 15:34:58,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:34:58,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:34:58,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:34:58,886 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 15:34:58,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:34:58,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1062635625] [2022-12-12 15:34:58,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1062635625] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:34:58,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:34:58,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 15:34:58,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961296289] [2022-12-12 15:34:58,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:34:58,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 15:34:58,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:34:58,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 15:34:58,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-12 15:34:58,912 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 21 [2022-12-12 15:34:58,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 26 places, 21 transitions, 54 flow. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 15:34:58,913 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:34:58,913 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 21 [2022-12-12 15:34:58,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:34:59,069 INFO L130 PetriNetUnfolder]: 165/323 cut-off events. [2022-12-12 15:34:59,069 INFO L131 PetriNetUnfolder]: For 45/45 co-relation queries the response was YES. [2022-12-12 15:34:59,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 683 conditions, 323 events. 165/323 cut-off events. For 45/45 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1264 event pairs, 30 based on Foata normal form. 0/295 useless extension candidates. Maximal degree in co-relation 602. Up to 121 conditions per place. [2022-12-12 15:34:59,073 INFO L137 encePairwiseOnDemand]: 13/21 looper letters, 42 selfloop transitions, 10 changer transitions 0/53 dead transitions. [2022-12-12 15:34:59,073 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 53 transitions, 240 flow [2022-12-12 15:34:59,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 15:34:59,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 15:34:59,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 60 transitions. [2022-12-12 15:34:59,082 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2022-12-12 15:34:59,083 INFO L175 Difference]: Start difference. First operand has 26 places, 21 transitions, 54 flow. Second operand 5 states and 60 transitions. [2022-12-12 15:34:59,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 53 transitions, 240 flow [2022-12-12 15:34:59,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 53 transitions, 220 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-12 15:34:59,090 INFO L231 Difference]: Finished difference. Result has 29 places, 29 transitions, 115 flow [2022-12-12 15:34:59,091 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=22, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=115, PETRI_PLACES=29, PETRI_TRANSITIONS=29} [2022-12-12 15:34:59,095 INFO L295 CegarLoopForPetriNet]: 26 programPoint places, 3 predicate places. [2022-12-12 15:34:59,095 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 29 transitions, 115 flow [2022-12-12 15:34:59,095 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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 15:34:59,096 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:34:59,096 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:34:59,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 15:34:59,096 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 15:34:59,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:34:59,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1739565572, now seen corresponding path program 2 times [2022-12-12 15:34:59,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:34:59,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489512979] [2022-12-12 15:34:59,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:34:59,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:34:59,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:34:59,312 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 15:34:59,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:34:59,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489512979] [2022-12-12 15:34:59,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489512979] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:34:59,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:34:59,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 15:34:59,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [887818560] [2022-12-12 15:34:59,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:34:59,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 15:34:59,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:34:59,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 15:34:59,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2022-12-12 15:34:59,315 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 21 [2022-12-12 15:34:59,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 29 transitions, 115 flow. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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 15:34:59,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:34:59,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 21 [2022-12-12 15:34:59,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:34:59,439 INFO L130 PetriNetUnfolder]: 126/258 cut-off events. [2022-12-12 15:34:59,440 INFO L131 PetriNetUnfolder]: For 129/131 co-relation queries the response was YES. [2022-12-12 15:34:59,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 665 conditions, 258 events. 126/258 cut-off events. For 129/131 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 978 event pairs, 0 based on Foata normal form. 16/274 useless extension candidates. Maximal degree in co-relation 398. Up to 159 conditions per place. [2022-12-12 15:34:59,443 INFO L137 encePairwiseOnDemand]: 13/21 looper letters, 35 selfloop transitions, 17 changer transitions 0/53 dead transitions. [2022-12-12 15:34:59,443 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 53 transitions, 282 flow [2022-12-12 15:34:59,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 15:34:59,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 15:34:59,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 59 transitions. [2022-12-12 15:34:59,446 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4013605442176871 [2022-12-12 15:34:59,446 INFO L175 Difference]: Start difference. First operand has 29 places, 29 transitions, 115 flow. Second operand 7 states and 59 transitions. [2022-12-12 15:34:59,446 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 53 transitions, 282 flow [2022-12-12 15:34:59,447 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 53 transitions, 271 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-12-12 15:34:59,448 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 193 flow [2022-12-12 15:34:59,449 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=193, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2022-12-12 15:34:59,449 INFO L295 CegarLoopForPetriNet]: 26 programPoint places, 10 predicate places. [2022-12-12 15:34:59,449 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 193 flow [2022-12-12 15:34:59,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 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 15:34:59,449 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:34:59,449 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:34:59,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 15:34:59,450 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 15:34:59,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:34:59,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1853342508, now seen corresponding path program 3 times [2022-12-12 15:34:59,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:34:59,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831814627] [2022-12-12 15:34:59,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:34:59,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:34:59,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:34:59,577 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 15:34:59,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:34:59,577 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831814627] [2022-12-12 15:34:59,577 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831814627] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:34:59,577 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:34:59,577 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-12 15:34:59,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106076810] [2022-12-12 15:34:59,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:34:59,578 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-12 15:34:59,578 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:34:59,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-12 15:34:59,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-12-12 15:34:59,579 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 0 out of 21 [2022-12-12 15:34:59,579 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 193 flow. Second operand has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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 15:34:59,579 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:34:59,579 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 0 of 21 [2022-12-12 15:34:59,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:34:59,675 INFO L130 PetriNetUnfolder]: 217/430 cut-off events. [2022-12-12 15:34:59,675 INFO L131 PetriNetUnfolder]: For 460/460 co-relation queries the response was YES. [2022-12-12 15:34:59,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1353 conditions, 430 events. 217/430 cut-off events. For 460/460 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1837 event pairs, 38 based on Foata normal form. 4/434 useless extension candidates. Maximal degree in co-relation 481. Up to 200 conditions per place. [2022-12-12 15:34:59,678 INFO L137 encePairwiseOnDemand]: 12/21 looper letters, 56 selfloop transitions, 23 changer transitions 0/79 dead transitions. [2022-12-12 15:34:59,678 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 79 transitions, 563 flow [2022-12-12 15:34:59,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-12 15:34:59,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-12 15:34:59,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 64 transitions. [2022-12-12 15:34:59,679 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.43537414965986393 [2022-12-12 15:34:59,679 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 193 flow. Second operand 7 states and 64 transitions. [2022-12-12 15:34:59,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 79 transitions, 563 flow [2022-12-12 15:34:59,681 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 79 transitions, 544 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-12-12 15:34:59,682 INFO L231 Difference]: Finished difference. Result has 45 places, 50 transitions, 414 flow [2022-12-12 15:34:59,682 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=183, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=414, PETRI_PLACES=45, PETRI_TRANSITIONS=50} [2022-12-12 15:34:59,683 INFO L295 CegarLoopForPetriNet]: 26 programPoint places, 19 predicate places. [2022-12-12 15:34:59,683 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 50 transitions, 414 flow [2022-12-12 15:34:59,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 6 states have internal predecessors, (17), 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 15:34:59,683 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:34:59,683 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:34:59,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 15:34:59,684 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 15:34:59,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:34:59,684 INFO L85 PathProgramCache]: Analyzing trace with hash -37212394, now seen corresponding path program 4 times [2022-12-12 15:34:59,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:34:59,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732748431] [2022-12-12 15:34:59,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:34:59,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:34:59,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:34:59,803 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 15:34:59,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:34:59,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732748431] [2022-12-12 15:34:59,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732748431] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:34:59,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:34:59,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 15:34:59,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066235733] [2022-12-12 15:34:59,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:34:59,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 15:34:59,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:34:59,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 15:34:59,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-12 15:34:59,813 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 21 [2022-12-12 15:34:59,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 50 transitions, 414 flow. Second operand has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 15:34:59,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:34:59,813 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 21 [2022-12-12 15:34:59,813 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:34:59,906 INFO L130 PetriNetUnfolder]: 188/402 cut-off events. [2022-12-12 15:34:59,906 INFO L131 PetriNetUnfolder]: For 901/901 co-relation queries the response was YES. [2022-12-12 15:34:59,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 402 events. 188/402 cut-off events. For 901/901 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 1826 event pairs, 40 based on Foata normal form. 3/403 useless extension candidates. Maximal degree in co-relation 707. Up to 285 conditions per place. [2022-12-12 15:34:59,908 INFO L137 encePairwiseOnDemand]: 17/21 looper letters, 16 selfloop transitions, 2 changer transitions 52/71 dead transitions. [2022-12-12 15:34:59,908 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 71 transitions, 672 flow [2022-12-12 15:34:59,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-12 15:34:59,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-12 15:34:59,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 47 transitions. [2022-12-12 15:34:59,909 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.44761904761904764 [2022-12-12 15:34:59,909 INFO L175 Difference]: Start difference. First operand has 45 places, 50 transitions, 414 flow. Second operand 5 states and 47 transitions. [2022-12-12 15:34:59,909 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 71 transitions, 672 flow [2022-12-12 15:34:59,911 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 71 transitions, 652 flow, removed 2 selfloop flow, removed 1 redundant places. [2022-12-12 15:34:59,912 INFO L231 Difference]: Finished difference. Result has 50 places, 18 transitions, 103 flow [2022-12-12 15:34:59,912 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=399, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=103, PETRI_PLACES=50, PETRI_TRANSITIONS=18} [2022-12-12 15:34:59,913 INFO L295 CegarLoopForPetriNet]: 26 programPoint places, 24 predicate places. [2022-12-12 15:34:59,913 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 18 transitions, 103 flow [2022-12-12 15:34:59,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 5.25) internal successors, (21), 4 states have internal predecessors, (21), 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 15:34:59,913 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 15:34:59,913 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 15:34:59,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 15:34:59,914 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 15:34:59,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 15:34:59,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1846097107, now seen corresponding path program 1 times [2022-12-12 15:34:59,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 15:34:59,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310004478] [2022-12-12 15:34:59,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 15:34:59,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 15:34:59,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 15:34:59,956 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 15:34:59,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 15:34:59,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310004478] [2022-12-12 15:34:59,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310004478] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 15:34:59,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 15:34:59,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-12 15:34:59,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336507762] [2022-12-12 15:34:59,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 15:34:59,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 15:34:59,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 15:34:59,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 15:34:59,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 15:34:59,958 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 2 out of 21 [2022-12-12 15:34:59,958 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 18 transitions, 103 flow. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 15:34:59,958 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 15:34:59,958 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 2 of 21 [2022-12-12 15:34:59,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 15:34:59,967 INFO L130 PetriNetUnfolder]: 2/14 cut-off events. [2022-12-12 15:34:59,967 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-12-12 15:34:59,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66 conditions, 14 events. 2/14 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 8 event pairs, 2 based on Foata normal form. 2/15 useless extension candidates. Maximal degree in co-relation 51. Up to 11 conditions per place. [2022-12-12 15:34:59,967 INFO L137 encePairwiseOnDemand]: 19/21 looper letters, 0 selfloop transitions, 0 changer transitions 9/9 dead transitions. [2022-12-12 15:34:59,967 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 9 transitions, 66 flow [2022-12-12 15:34:59,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 15:34:59,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 15:34:59,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 14 transitions. [2022-12-12 15:34:59,968 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2222222222222222 [2022-12-12 15:34:59,968 INFO L175 Difference]: Start difference. First operand has 50 places, 18 transitions, 103 flow. Second operand 3 states and 14 transitions. [2022-12-12 15:34:59,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 9 transitions, 66 flow [2022-12-12 15:34:59,968 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 9 transitions, 38 flow, removed 0 selfloop flow, removed 17 redundant places. [2022-12-12 15:34:59,969 INFO L231 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2022-12-12 15:34:59,969 INFO L277 CegarLoopForPetriNet]: {PETRI_ALPHABET=21, PETRI_DIFFERENCE_MINUEND_FLOW=24, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=9, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2022-12-12 15:34:59,969 INFO L295 CegarLoopForPetriNet]: 26 programPoint places, -6 predicate places. [2022-12-12 15:34:59,969 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2022-12-12 15:34:59,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 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 15:34:59,971 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 15:34:59,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-12-12 15:34:59,972 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 15:34:59,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 15:34:59,972 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1] [2022-12-12 15:34:59,974 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 15:34:59,974 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 15:34:59,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 03:34:59 BasicIcfg [2022-12-12 15:34:59,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 15:34:59,977 INFO L158 Benchmark]: Toolchain (without parser) took 5507.61ms. Allocated memory was 182.5MB in the beginning and 263.2MB in the end (delta: 80.7MB). Free memory was 161.8MB in the beginning and 208.6MB in the end (delta: -46.8MB). Peak memory consumption was 34.4MB. Max. memory is 8.0GB. [2022-12-12 15:34:59,977 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 127.9MB. Free memory was 108.5MB in the beginning and 108.5MB in the end (delta: 48.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 15:34:59,977 INFO L158 Benchmark]: CACSL2BoogieTranslator took 200.67ms. Allocated memory is still 182.5MB. Free memory was 161.5MB in the beginning and 148.2MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 15:34:59,978 INFO L158 Benchmark]: Boogie Procedure Inliner took 37.51ms. Allocated memory is still 182.5MB. Free memory was 148.2MB in the beginning and 146.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 15:34:59,978 INFO L158 Benchmark]: Boogie Preprocessor took 14.67ms. Allocated memory is still 182.5MB. Free memory was 146.2MB in the beginning and 145.0MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 15:34:59,978 INFO L158 Benchmark]: RCFGBuilder took 360.52ms. Allocated memory is still 182.5MB. Free memory was 144.7MB in the beginning and 159.7MB in the end (delta: -15.0MB). Peak memory consumption was 19.1MB. Max. memory is 8.0GB. [2022-12-12 15:34:59,979 INFO L158 Benchmark]: TraceAbstraction took 4878.97ms. Allocated memory was 182.5MB in the beginning and 263.2MB in the end (delta: 80.7MB). Free memory was 158.5MB in the beginning and 208.6MB in the end (delta: -50.1MB). Peak memory consumption was 31.1MB. Max. memory is 8.0GB. [2022-12-12 15:34:59,980 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 127.9MB. Free memory was 108.5MB in the beginning and 108.5MB in the end (delta: 48.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 200.67ms. Allocated memory is still 182.5MB. Free memory was 161.5MB in the beginning and 148.2MB in the end (delta: 13.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 37.51ms. Allocated memory is still 182.5MB. Free memory was 148.2MB in the beginning and 146.2MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 14.67ms. Allocated memory is still 182.5MB. Free memory was 146.2MB in the beginning and 145.0MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 360.52ms. Allocated memory is still 182.5MB. Free memory was 144.7MB in the beginning and 159.7MB in the end (delta: -15.0MB). Peak memory consumption was 19.1MB. Max. memory is 8.0GB. * TraceAbstraction took 4878.97ms. Allocated memory was 182.5MB in the beginning and 263.2MB in the end (delta: 80.7MB). Free memory was 158.5MB in the beginning and 208.6MB in the end (delta: -50.1MB). Peak memory consumption was 31.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 110 PlacesBefore, 26 PlacesAfterwards, 112 TransitionsBefore, 21 TransitionsAfterwards, 452 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 1 ConcurrentSequentialCompositions, 70 TrivialYvCompositions, 14 ConcurrentYvCompositions, 7 ChoiceCompositions, 92 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 490, independent: 421, independent conditional: 421, independent unconditional: 0, dependent: 69, dependent conditional: 69, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 490, independent: 421, independent conditional: 0, independent unconditional: 421, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 490, independent: 421, independent conditional: 0, independent unconditional: 421, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 490, independent: 421, independent conditional: 0, independent unconditional: 421, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 295, independent: 272, independent conditional: 0, independent unconditional: 272, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 295, independent: 265, independent conditional: 0, independent unconditional: 265, dependent: 30, dependent conditional: 0, dependent unconditional: 30, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 30, independent: 7, independent conditional: 0, independent unconditional: 7, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 78, independent: 33, independent conditional: 0, independent unconditional: 33, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 490, independent: 149, independent conditional: 0, independent unconditional: 149, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 295, unknown conditional: 0, unknown unconditional: 295] , Statistics on independence cache: Total cache size (in pairs): 458, Positive cache size: 435, Positive conditional cache size: 0, Positive unconditional cache size: 435, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 115]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 135 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 106 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 106 mSDsluCounter, 10 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 449 IncrementalHoareTripleChecker+Invalid, 487 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 4 mSDtfsCounter, 449 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=414occurred in iteration=3, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 86 NumberOfCodeBlocks, 86 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 81 ConstructedInterpolants, 0 QuantifiedInterpolants, 374 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 0/0 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 15:34:59,994 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...