/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 17:34:43,557 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 17:34:43,558 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 17:34:43,589 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 17:34:43,589 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 17:34:43,591 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 17:34:43,594 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 17:34:43,596 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 17:34:43,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 17:34:43,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 17:34:43,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 17:34:43,601 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 17:34:43,602 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 17:34:43,602 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 17:34:43,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 17:34:43,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 17:34:43,604 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 17:34:43,605 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 17:34:43,606 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 17:34:43,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 17:34:43,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 17:34:43,614 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 17:34:43,615 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 17:34:43,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 17:34:43,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 17:34:43,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 17:34:43,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 17:34:43,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 17:34:43,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 17:34:43,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 17:34:43,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 17:34:43,627 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 17:34:43,628 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 17:34:43,628 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 17:34:43,629 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 17:34:43,629 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 17:34:43,629 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 17:34:43,630 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 17:34:43,630 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 17:34:43,630 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 17:34:43,631 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 17:34:43,632 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-06 17:34:43,657 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 17:34:43,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 17:34:43,658 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 17:34:43,658 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 17:34:43,658 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 17:34:43,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 17:34:43,659 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 17:34:43,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 17:34:43,659 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 17:34:43,659 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 17:34:43,659 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 17:34:43,659 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 17:34:43,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 17:34:43,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 17:34:43,660 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 17:34:43,660 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 17:34:43,660 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 17:34:43,660 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 17:34:43,660 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 17:34:43,660 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 17:34:43,661 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 17:34:43,661 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 17:34:43,661 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 17:34:43,661 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 17:34:43,661 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 17:34:43,661 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 17:34:43,661 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 17:34:43,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 17:34:43,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 17:34:43,662 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 17:34:43,662 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 17:34:43,662 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 17:34:43,896 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 17:34:43,928 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 17:34:43,930 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 17:34:43,931 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 17:34:43,932 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 17:34:43,932 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c [2022-12-06 17:34:44,994 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 17:34:45,225 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 17:34:45,226 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c [2022-12-06 17:34:45,247 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5147fc77/520c5d02dd2a45928fe8499976530cce/FLAGf88c3ea11 [2022-12-06 17:34:45,263 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a5147fc77/520c5d02dd2a45928fe8499976530cce [2022-12-06 17:34:45,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 17:34:45,266 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 17:34:45,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 17:34:45,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 17:34:45,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 17:34:45,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:34:45" (1/1) ... [2022-12-06 17:34:45,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674578f4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:45, skipping insertion in model container [2022-12-06 17:34:45,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 05:34:45" (1/1) ... [2022-12-06 17:34:45,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 17:34:45,288 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 17:34:45,402 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:34:45,403 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:34:45,404 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:34:45,405 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:34:45,405 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:34:45,406 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:34:45,408 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:34:45,408 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:34:45,410 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:34:45,411 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:34:45,411 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:34:45,412 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:34:45,412 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:34:45,412 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:34:45,413 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:34:45,413 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:34:45,414 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:34:45,415 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:34:45,425 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c[2950,2963] [2022-12-06 17:34:45,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 17:34:45,437 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 17:34:45,448 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:34:45,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:34:45,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:34:45,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:34:45,449 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:34:45,451 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:34:45,452 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:34:45,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:34:45,453 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:34:45,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:34:45,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:34:45,454 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:34:45,455 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:34:45,456 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:34:45,457 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:34:45,457 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:34:45,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 17:34:45,458 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 17:34:45,468 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-misc-4.wvr.c[2950,2963] [2022-12-06 17:34:45,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 17:34:45,480 INFO L208 MainTranslator]: Completed translation [2022-12-06 17:34:45,481 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:45 WrapperNode [2022-12-06 17:34:45,481 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 17:34:45,482 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 17:34:45,482 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 17:34:45,482 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 17:34:45,486 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:45" (1/1) ... [2022-12-06 17:34:45,497 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:45" (1/1) ... [2022-12-06 17:34:45,515 INFO L138 Inliner]: procedures = 22, calls = 43, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 71 [2022-12-06 17:34:45,515 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 17:34:45,516 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 17:34:45,516 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 17:34:45,516 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 17:34:45,521 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:45" (1/1) ... [2022-12-06 17:34:45,521 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:45" (1/1) ... [2022-12-06 17:34:45,526 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:45" (1/1) ... [2022-12-06 17:34:45,526 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:45" (1/1) ... [2022-12-06 17:34:45,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:45" (1/1) ... [2022-12-06 17:34:45,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:45" (1/1) ... [2022-12-06 17:34:45,543 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:45" (1/1) ... [2022-12-06 17:34:45,544 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:45" (1/1) ... [2022-12-06 17:34:45,545 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 17:34:45,546 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 17:34:45,546 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 17:34:45,546 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 17:34:45,546 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:45" (1/1) ... [2022-12-06 17:34:45,556 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 17:34:45,566 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:34:45,593 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) [2022-12-06 17:34:45,612 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 [2022-12-06 17:34:45,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 17:34:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 17:34:45,621 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 17:34:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 17:34:45,621 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 17:34:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-06 17:34:45,621 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-06 17:34:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 17:34:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 17:34:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 17:34:45,621 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 17:34:45,622 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 17:34:45,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 17:34:45,622 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 17:34:45,622 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 17:34:45,622 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 17:34:45,623 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 17:34:45,680 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 17:34:45,682 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 17:34:45,806 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 17:34:45,823 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 17:34:45,823 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2022-12-06 17:34:45,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:34:45 BoogieIcfgContainer [2022-12-06 17:34:45,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 17:34:45,826 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 17:34:45,826 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 17:34:45,828 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 17:34:45,828 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 05:34:45" (1/3) ... [2022-12-06 17:34:45,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b95761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:34:45, skipping insertion in model container [2022-12-06 17:34:45,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 05:34:45" (2/3) ... [2022-12-06 17:34:45,829 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16b95761 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 05:34:45, skipping insertion in model container [2022-12-06 17:34:45,829 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 05:34:45" (3/3) ... [2022-12-06 17:34:45,830 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-4.wvr.c [2022-12-06 17:34:45,841 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 17:34:45,841 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 17:34:45,841 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 17:34:45,900 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-06 17:34:45,921 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 102 places, 99 transitions, 222 flow [2022-12-06 17:34:45,983 INFO L130 PetriNetUnfolder]: 7/96 cut-off events. [2022-12-06 17:34:45,984 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-06 17:34:45,987 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109 conditions, 96 events. 7/96 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 73 event pairs, 0 based on Foata normal form. 0/88 useless extension candidates. Maximal degree in co-relation 74. Up to 2 conditions per place. [2022-12-06 17:34:45,987 INFO L82 GeneralOperation]: Start removeDead. Operand has 102 places, 99 transitions, 222 flow [2022-12-06 17:34:45,990 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 89 places, 86 transitions, 190 flow [2022-12-06 17:34:45,999 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 17:34:46,014 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;@1a582039, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 17:34:46,014 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-06 17:34:46,049 INFO L130 PetriNetUnfolder]: 7/85 cut-off events. [2022-12-06 17:34:46,049 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-06 17:34:46,049 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:46,050 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:46,050 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)] === [2022-12-06 17:34:46,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:46,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1886510652, now seen corresponding path program 1 times [2022-12-06 17:34:46,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:46,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [10498383] [2022-12-06 17:34:46,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:46,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:46,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:46,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:46,803 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:46,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [10498383] [2022-12-06 17:34:46,803 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [10498383] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:34:46,803 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:34:46,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 17:34:46,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825752667] [2022-12-06 17:34:46,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:34:46,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 17:34:46,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:46,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 17:34:46,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-06 17:34:46,843 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 99 [2022-12-06 17:34:46,847 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 86 transitions, 190 flow. Second operand has 7 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 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) [2022-12-06 17:34:46,847 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:46,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 99 [2022-12-06 17:34:46,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:47,152 INFO L130 PetriNetUnfolder]: 299/819 cut-off events. [2022-12-06 17:34:47,152 INFO L131 PetriNetUnfolder]: For 152/152 co-relation queries the response was YES. [2022-12-06 17:34:47,157 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1401 conditions, 819 events. 299/819 cut-off events. For 152/152 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4881 event pairs, 48 based on Foata normal form. 44/750 useless extension candidates. Maximal degree in co-relation 1253. Up to 193 conditions per place. [2022-12-06 17:34:47,161 INFO L137 encePairwiseOnDemand]: 85/99 looper letters, 46 selfloop transitions, 9 changer transitions 30/142 dead transitions. [2022-12-06 17:34:47,162 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 142 transitions, 508 flow [2022-12-06 17:34:47,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 17:34:47,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 17:34:47,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 721 transitions. [2022-12-06 17:34:47,177 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8092031425364759 [2022-12-06 17:34:47,180 INFO L294 CegarLoopForPetriNet]: 89 programPoint places, 8 predicate places. [2022-12-06 17:34:47,180 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 142 transitions, 508 flow [2022-12-06 17:34:47,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 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) [2022-12-06 17:34:47,181 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:47,182 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:47,184 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 17:34:47,184 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)] === [2022-12-06 17:34:47,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:47,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1911835478, now seen corresponding path program 2 times [2022-12-06 17:34:47,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:47,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61867336] [2022-12-06 17:34:47,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:47,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:47,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:47,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:47,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:47,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [61867336] [2022-12-06 17:34:47,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [61867336] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:34:47,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:34:47,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 17:34:47,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986119101] [2022-12-06 17:34:47,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:34:47,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 17:34:47,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:47,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 17:34:47,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-06 17:34:47,426 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 99 [2022-12-06 17:34:47,426 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 142 transitions, 508 flow. Second operand has 7 states, 7 states have (on average 75.28571428571429) internal successors, (527), 7 states have internal predecessors, (527), 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) [2022-12-06 17:34:47,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:47,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 99 [2022-12-06 17:34:47,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:47,601 INFO L130 PetriNetUnfolder]: 348/951 cut-off events. [2022-12-06 17:34:47,601 INFO L131 PetriNetUnfolder]: For 467/574 co-relation queries the response was YES. [2022-12-06 17:34:47,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2027 conditions, 951 events. 348/951 cut-off events. For 467/574 co-relation queries the response was YES. Maximal size of possible extension queue 74. Compared 5880 event pairs, 64 based on Foata normal form. 1/835 useless extension candidates. Maximal degree in co-relation 1750. Up to 213 conditions per place. [2022-12-06 17:34:47,606 INFO L137 encePairwiseOnDemand]: 91/99 looper letters, 48 selfloop transitions, 13 changer transitions 35/164 dead transitions. [2022-12-06 17:34:47,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 164 transitions, 765 flow [2022-12-06 17:34:47,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 17:34:47,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 17:34:47,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 550 transitions. [2022-12-06 17:34:47,607 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7936507936507936 [2022-12-06 17:34:47,608 INFO L294 CegarLoopForPetriNet]: 89 programPoint places, 14 predicate places. [2022-12-06 17:34:47,608 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 164 transitions, 765 flow [2022-12-06 17:34:47,608 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 75.28571428571429) internal successors, (527), 7 states have internal predecessors, (527), 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) [2022-12-06 17:34:47,608 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:47,608 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:47,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 17:34:47,609 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)] === [2022-12-06 17:34:47,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:47,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1373581560, now seen corresponding path program 3 times [2022-12-06 17:34:47,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:47,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679998858] [2022-12-06 17:34:47,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:47,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:47,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:47,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:47,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679998858] [2022-12-06 17:34:47,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679998858] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:34:47,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:34:47,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-06 17:34:47,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625330357] [2022-12-06 17:34:47,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:34:47,769 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 17:34:47,769 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:47,769 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 17:34:47,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-06 17:34:47,770 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 99 [2022-12-06 17:34:47,771 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 164 transitions, 765 flow. Second operand has 7 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 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) [2022-12-06 17:34:47,771 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:47,771 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 99 [2022-12-06 17:34:47,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:47,943 INFO L130 PetriNetUnfolder]: 389/954 cut-off events. [2022-12-06 17:34:47,943 INFO L131 PetriNetUnfolder]: For 939/1353 co-relation queries the response was YES. [2022-12-06 17:34:47,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2618 conditions, 954 events. 389/954 cut-off events. For 939/1353 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 5784 event pairs, 54 based on Foata normal form. 7/839 useless extension candidates. Maximal degree in co-relation 2480. Up to 218 conditions per place. [2022-12-06 17:34:47,947 INFO L137 encePairwiseOnDemand]: 88/99 looper letters, 46 selfloop transitions, 7 changer transitions 80/192 dead transitions. [2022-12-06 17:34:47,947 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 192 transitions, 1137 flow [2022-12-06 17:34:47,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 17:34:47,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 17:34:47,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 695 transitions. [2022-12-06 17:34:47,949 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7800224466891134 [2022-12-06 17:34:47,949 INFO L294 CegarLoopForPetriNet]: 89 programPoint places, 22 predicate places. [2022-12-06 17:34:47,950 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 192 transitions, 1137 flow [2022-12-06 17:34:47,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 71.57142857142857) internal successors, (501), 7 states have internal predecessors, (501), 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) [2022-12-06 17:34:47,950 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:47,950 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:47,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 17:34:47,950 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)] === [2022-12-06 17:34:47,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:47,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1400212159, now seen corresponding path program 1 times [2022-12-06 17:34:47,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:47,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572990414] [2022-12-06 17:34:47,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:47,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:47,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:48,090 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:48,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:48,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572990414] [2022-12-06 17:34:48,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572990414] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:34:48,091 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:34:48,091 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 17:34:48,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741967186] [2022-12-06 17:34:48,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:34:48,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 17:34:48,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:48,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 17:34:48,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 17:34:48,092 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 99 [2022-12-06 17:34:48,093 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 192 transitions, 1137 flow. Second operand has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 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) [2022-12-06 17:34:48,093 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:48,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 99 [2022-12-06 17:34:48,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:48,263 INFO L130 PetriNetUnfolder]: 547/1306 cut-off events. [2022-12-06 17:34:48,263 INFO L131 PetriNetUnfolder]: For 1870/2875 co-relation queries the response was YES. [2022-12-06 17:34:48,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4266 conditions, 1306 events. 547/1306 cut-off events. For 1870/2875 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 8554 event pairs, 28 based on Foata normal form. 7/1182 useless extension candidates. Maximal degree in co-relation 4101. Up to 306 conditions per place. [2022-12-06 17:34:48,270 INFO L137 encePairwiseOnDemand]: 90/99 looper letters, 66 selfloop transitions, 31 changer transitions 157/318 dead transitions. [2022-12-06 17:34:48,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 318 transitions, 2483 flow [2022-12-06 17:34:48,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 17:34:48,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 17:34:48,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 590 transitions. [2022-12-06 17:34:48,272 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8513708513708513 [2022-12-06 17:34:48,273 INFO L294 CegarLoopForPetriNet]: 89 programPoint places, 28 predicate places. [2022-12-06 17:34:48,273 INFO L495 AbstractCegarLoop]: Abstraction has has 117 places, 318 transitions, 2483 flow [2022-12-06 17:34:48,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 78.4) internal successors, (392), 5 states have internal predecessors, (392), 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) [2022-12-06 17:34:48,273 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:48,273 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:48,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 17:34:48,273 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)] === [2022-12-06 17:34:48,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:48,274 INFO L85 PathProgramCache]: Analyzing trace with hash 1886196605, now seen corresponding path program 2 times [2022-12-06 17:34:48,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:48,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823417490] [2022-12-06 17:34:48,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:48,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:48,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:48,349 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:48,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:48,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823417490] [2022-12-06 17:34:48,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823417490] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:34:48,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:34:48,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 17:34:48,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656765994] [2022-12-06 17:34:48,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:34:48,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 17:34:48,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:48,350 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 17:34:48,350 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-06 17:34:48,351 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 99 [2022-12-06 17:34:48,351 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 318 transitions, 2483 flow. Second operand has 5 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 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) [2022-12-06 17:34:48,351 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:48,351 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 99 [2022-12-06 17:34:48,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:48,555 INFO L130 PetriNetUnfolder]: 851/1962 cut-off events. [2022-12-06 17:34:48,556 INFO L131 PetriNetUnfolder]: For 4170/5356 co-relation queries the response was YES. [2022-12-06 17:34:48,561 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7013 conditions, 1962 events. 851/1962 cut-off events. For 4170/5356 co-relation queries the response was YES. Maximal size of possible extension queue 142. Compared 14158 event pairs, 9 based on Foata normal form. 18/1781 useless extension candidates. Maximal degree in co-relation 6760. Up to 510 conditions per place. [2022-12-06 17:34:48,567 INFO L137 encePairwiseOnDemand]: 93/99 looper letters, 49 selfloop transitions, 5 changer transitions 135/330 dead transitions. [2022-12-06 17:34:48,567 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 330 transitions, 2795 flow [2022-12-06 17:34:48,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 17:34:48,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 17:34:48,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 411 transitions. [2022-12-06 17:34:48,569 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8303030303030303 [2022-12-06 17:34:48,569 INFO L294 CegarLoopForPetriNet]: 89 programPoint places, 32 predicate places. [2022-12-06 17:34:48,569 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 330 transitions, 2795 flow [2022-12-06 17:34:48,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 80.0) internal successors, (400), 5 states have internal predecessors, (400), 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) [2022-12-06 17:34:48,570 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:48,570 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:48,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 17:34:48,570 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)] === [2022-12-06 17:34:48,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:48,570 INFO L85 PathProgramCache]: Analyzing trace with hash -533045437, now seen corresponding path program 1 times [2022-12-06 17:34:48,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:48,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819447942] [2022-12-06 17:34:48,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:48,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:48,671 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:48,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:48,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819447942] [2022-12-06 17:34:48,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819447942] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:34:48,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686141481] [2022-12-06 17:34:48,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:48,672 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:34:48,672 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:34:48,675 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) [2022-12-06 17:34:48,728 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 17:34:48,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:48,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-06 17:34:48,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:34:48,821 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:48,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:34:48,859 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:48,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [686141481] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:34:48,860 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:34:48,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 6 [2022-12-06 17:34:48,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976195999] [2022-12-06 17:34:48,860 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:34:48,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 17:34:48,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:48,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 17:34:48,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-06 17:34:48,861 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 99 [2022-12-06 17:34:48,862 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 330 transitions, 2795 flow. Second operand has 6 states, 6 states have (on average 79.83333333333333) internal successors, (479), 6 states have internal predecessors, (479), 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) [2022-12-06 17:34:48,862 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:48,862 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 99 [2022-12-06 17:34:48,862 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:49,207 INFO L130 PetriNetUnfolder]: 1168/2778 cut-off events. [2022-12-06 17:34:49,208 INFO L131 PetriNetUnfolder]: For 7717/10077 co-relation queries the response was YES. [2022-12-06 17:34:49,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 11222 conditions, 2778 events. 1168/2778 cut-off events. For 7717/10077 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 21894 event pairs, 12 based on Foata normal form. 34/2572 useless extension candidates. Maximal degree in co-relation 10829. Up to 783 conditions per place. [2022-12-06 17:34:49,223 INFO L137 encePairwiseOnDemand]: 94/99 looper letters, 148 selfloop transitions, 41 changer transitions 252/529 dead transitions. [2022-12-06 17:34:49,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 529 transitions, 5738 flow [2022-12-06 17:34:49,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 17:34:49,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 17:34:49,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 515 transitions. [2022-12-06 17:34:49,225 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.867003367003367 [2022-12-06 17:34:49,226 INFO L294 CegarLoopForPetriNet]: 89 programPoint places, 37 predicate places. [2022-12-06 17:34:49,226 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 529 transitions, 5738 flow [2022-12-06 17:34:49,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 79.83333333333333) internal successors, (479), 6 states have internal predecessors, (479), 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) [2022-12-06 17:34:49,226 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:49,226 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:49,233 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-06 17:34:49,431 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 [2022-12-06 17:34:49,431 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)] === [2022-12-06 17:34:49,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:49,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1035174771, now seen corresponding path program 2 times [2022-12-06 17:34:49,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:49,432 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594206883] [2022-12-06 17:34:49,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:49,432 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:49,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:49,529 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:49,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:49,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594206883] [2022-12-06 17:34:49,529 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594206883] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:34:49,529 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:34:49,529 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 17:34:49,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929754124] [2022-12-06 17:34:49,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:34:49,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 17:34:49,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:49,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 17:34:49,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-06 17:34:49,531 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 99 [2022-12-06 17:34:49,531 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 529 transitions, 5738 flow. Second operand has 5 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 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) [2022-12-06 17:34:49,531 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:49,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 99 [2022-12-06 17:34:49,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:49,985 INFO L130 PetriNetUnfolder]: 1659/3852 cut-off events. [2022-12-06 17:34:49,985 INFO L131 PetriNetUnfolder]: For 18944/21216 co-relation queries the response was YES. [2022-12-06 17:34:49,993 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16999 conditions, 3852 events. 1659/3852 cut-off events. For 18944/21216 co-relation queries the response was YES. Maximal size of possible extension queue 240. Compared 32058 event pairs, 78 based on Foata normal form. 10/3505 useless extension candidates. Maximal degree in co-relation 16209. Up to 1060 conditions per place. [2022-12-06 17:34:50,009 INFO L137 encePairwiseOnDemand]: 93/99 looper letters, 179 selfloop transitions, 5 changer transitions 125/588 dead transitions. [2022-12-06 17:34:50,009 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 588 transitions, 7071 flow [2022-12-06 17:34:50,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 17:34:50,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 17:34:50,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 412 transitions. [2022-12-06 17:34:50,011 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8323232323232324 [2022-12-06 17:34:50,011 INFO L294 CegarLoopForPetriNet]: 89 programPoint places, 41 predicate places. [2022-12-06 17:34:50,011 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 588 transitions, 7071 flow [2022-12-06 17:34:50,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 79.8) internal successors, (399), 5 states have internal predecessors, (399), 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) [2022-12-06 17:34:50,012 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:50,012 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:50,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-06 17:34:50,012 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)] === [2022-12-06 17:34:50,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:50,012 INFO L85 PathProgramCache]: Analyzing trace with hash -1782457922, now seen corresponding path program 1 times [2022-12-06 17:34:50,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:50,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1934711275] [2022-12-06 17:34:50,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:50,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:50,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:50,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:50,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:50,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1934711275] [2022-12-06 17:34:50,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1934711275] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:34:50,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [394728335] [2022-12-06 17:34:50,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:50,189 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:34:50,189 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:34:50,205 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) [2022-12-06 17:34:50,206 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-06 17:34:50,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:50,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-06 17:34:50,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:34:50,420 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:50,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:34:50,501 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:50,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [394728335] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:34:50,501 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:34:50,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 14 [2022-12-06 17:34:50,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546412782] [2022-12-06 17:34:50,501 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:34:50,502 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-12-06 17:34:50,502 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:50,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-12-06 17:34:50,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-12-06 17:34:50,503 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 99 [2022-12-06 17:34:50,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 588 transitions, 7071 flow. Second operand has 14 states, 14 states have (on average 71.78571428571429) internal successors, (1005), 14 states have internal predecessors, (1005), 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) [2022-12-06 17:34:50,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:50,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 99 [2022-12-06 17:34:50,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:51,784 INFO L130 PetriNetUnfolder]: 3134/6970 cut-off events. [2022-12-06 17:34:51,784 INFO L131 PetriNetUnfolder]: For 45905/50480 co-relation queries the response was YES. [2022-12-06 17:34:51,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35841 conditions, 6970 events. 3134/6970 cut-off events. For 45905/50480 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 62881 event pairs, 107 based on Foata normal form. 97/6380 useless extension candidates. Maximal degree in co-relation 34956. Up to 2714 conditions per place. [2022-12-06 17:34:51,827 INFO L137 encePairwiseOnDemand]: 85/99 looper letters, 464 selfloop transitions, 274 changer transitions 306/1180 dead transitions. [2022-12-06 17:34:51,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 1180 transitions, 17100 flow [2022-12-06 17:34:51,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-06 17:34:51,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-12-06 17:34:51,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 1814 transitions. [2022-12-06 17:34:51,830 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7634680134680135 [2022-12-06 17:34:51,831 INFO L294 CegarLoopForPetriNet]: 89 programPoint places, 64 predicate places. [2022-12-06 17:34:51,831 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 1180 transitions, 17100 flow [2022-12-06 17:34:51,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 71.78571428571429) internal successors, (1005), 14 states have internal predecessors, (1005), 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) [2022-12-06 17:34:51,831 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:51,831 INFO L213 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:51,844 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-06 17:34:52,036 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-12-06 17:34:52,036 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)] === [2022-12-06 17:34:52,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:52,037 INFO L85 PathProgramCache]: Analyzing trace with hash -506748506, now seen corresponding path program 1 times [2022-12-06 17:34:52,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:52,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565843323] [2022-12-06 17:34:52,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:52,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:52,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:52,177 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:34:52,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:52,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565843323] [2022-12-06 17:34:52,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565843323] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:34:52,178 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:34:52,178 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-06 17:34:52,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850084760] [2022-12-06 17:34:52,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:34:52,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-06 17:34:52,178 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:52,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-06 17:34:52,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-06 17:34:52,179 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 99 [2022-12-06 17:34:52,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 1180 transitions, 17100 flow. Second operand has 8 states, 8 states have (on average 71.75) internal successors, (574), 8 states have internal predecessors, (574), 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) [2022-12-06 17:34:52,180 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:52,180 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 99 [2022-12-06 17:34:52,180 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:53,850 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([239] L47-->L54: Formula: (= (+ v_~pos~0_18 1) v_~pos~0_17) InVars {~pos~0=v_~pos~0_18} OutVars{thread1Thread1of1ForFork0_#t~post1=|v_thread1Thread1of1ForFork0_#t~post1_1|, ~pos~0=v_~pos~0_17} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post1, ~pos~0][1226], [154#(and (<= (+ (* 256 (div thread2Thread1of1ForFork1_~lv_assert~1 256)) 1) thread2Thread1of1ForFork1_~lv_assert~1) (= ~v_assert~0 thread1Thread1of1ForFork0_~lv_assert~0) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), thread2Thread1of1ForFork1InUse, 161#(<= (+ (* 256 (div ~d1~0 256)) 1) ~d1~0), thread1Thread1of1ForFork0InUse, thread3Thread1of1ForFork2InUse, 918#(not (<= (mod thread1Thread1of1ForFork0_~lv_assert~0 256) 0)), 131#true, 105#true, 81#L81true, 5#L111-4true, 1120#true, 168#(<= (+ (* 256 (div thread2Thread1of1ForFork1_~lv_assert~1 256)) 1) thread2Thread1of1ForFork1_~lv_assert~1), 19#L54true, 93#L92true, 126#(<= (+ (* 256 (div thread1Thread1of1ForFork0_~lv_assert~0 256)) 1) thread1Thread1of1ForFork0_~lv_assert~0), 605#true]) [2022-12-06 17:34:53,851 INFO L382 tUnfolder$Statistics]: this new event has 70 ancestors and is cut-off event [2022-12-06 17:34:53,851 INFO L385 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-12-06 17:34:53,851 INFO L385 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-12-06 17:34:53,851 INFO L385 tUnfolder$Statistics]: existing Event has 70 ancestors and is cut-off event [2022-12-06 17:34:54,087 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([239] L47-->L54: Formula: (= (+ v_~pos~0_18 1) v_~pos~0_17) InVars {~pos~0=v_~pos~0_18} OutVars{thread1Thread1of1ForFork0_#t~post1=|v_thread1Thread1of1ForFork0_#t~post1_1|, ~pos~0=v_~pos~0_17} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post1, ~pos~0][250], [130#(and (= ~v_assert~0 thread1Thread1of1ForFork0_~lv_assert~0) (<= ~v_assert~0 (+ (* 256 (div ~v_assert~0 256)) 1)) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), 154#(and (<= (+ (* 256 (div thread2Thread1of1ForFork1_~lv_assert~1 256)) 1) thread2Thread1of1ForFork1_~lv_assert~1) (= ~v_assert~0 thread1Thread1of1ForFork0_~lv_assert~0) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), thread2Thread1of1ForFork1InUse, 18#$Ultimate##0true, 161#(<= (+ (* 256 (div ~d1~0 256)) 1) ~d1~0), thread1Thread1of1ForFork0InUse, thread3Thread1of1ForFork2InUse, 918#(not (<= (mod thread1Thread1of1ForFork0_~lv_assert~0 256) 0)), 131#true, 105#true, 81#L81true, 5#L111-4true, 603#(and (= ~v_assert~0 thread2Thread1of1ForFork1_~lv_assert~1) (<= (+ (* 256 (div ~v_assert~0 256)) 1) ~v_assert~0)), 1124#(<= 0 ~pos~0), 19#L54true, 605#true]) [2022-12-06 17:34:54,087 INFO L382 tUnfolder$Statistics]: this new event has 74 ancestors and is cut-off event [2022-12-06 17:34:54,088 INFO L385 tUnfolder$Statistics]: existing Event has 59 ancestors and is cut-off event [2022-12-06 17:34:54,088 INFO L385 tUnfolder$Statistics]: existing Event has 59 ancestors and is cut-off event [2022-12-06 17:34:54,088 INFO L385 tUnfolder$Statistics]: existing Event has 64 ancestors and is cut-off event [2022-12-06 17:34:54,178 INFO L380 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([239] L47-->L54: Formula: (= (+ v_~pos~0_18 1) v_~pos~0_17) InVars {~pos~0=v_~pos~0_18} OutVars{thread1Thread1of1ForFork0_#t~post1=|v_thread1Thread1of1ForFork0_#t~post1_1|, ~pos~0=v_~pos~0_17} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post1, ~pos~0][618], [thread2Thread1of1ForFork1InUse, 161#(<= (+ (* 256 (div ~d1~0 256)) 1) ~d1~0), thread1Thread1of1ForFork0InUse, thread3Thread1of1ForFork2InUse, 918#(not (<= (mod thread1Thread1of1ForFork0_~lv_assert~0 256) 0)), 131#true, 105#true, 81#L81true, 150#(<= (+ (* 256 (div thread2Thread1of1ForFork1_~lv_assert~1 256)) 1) thread2Thread1of1ForFork1_~lv_assert~1), 5#L111-4true, 168#(<= (+ (* 256 (div thread2Thread1of1ForFork1_~lv_assert~1 256)) 1) thread2Thread1of1ForFork1_~lv_assert~1), 93#L92true, 19#L54true, 1131#(and (<= 1 ~v_assert~0) (<= ~v_assert~0 1) (<= 0 ~pos~0)), 126#(<= (+ (* 256 (div thread1Thread1of1ForFork0_~lv_assert~0 256)) 1) thread1Thread1of1ForFork0_~lv_assert~0), 605#true]) [2022-12-06 17:34:54,179 INFO L382 tUnfolder$Statistics]: this new event has 75 ancestors and is cut-off event [2022-12-06 17:34:54,179 INFO L385 tUnfolder$Statistics]: existing Event has 65 ancestors and is cut-off event [2022-12-06 17:34:54,179 INFO L385 tUnfolder$Statistics]: existing Event has 60 ancestors and is cut-off event [2022-12-06 17:34:54,179 INFO L385 tUnfolder$Statistics]: existing Event has 60 ancestors and is cut-off event [2022-12-06 17:34:54,397 INFO L130 PetriNetUnfolder]: 6239/13460 cut-off events. [2022-12-06 17:34:54,397 INFO L131 PetriNetUnfolder]: For 116741/120488 co-relation queries the response was YES. [2022-12-06 17:34:54,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77730 conditions, 13460 events. 6239/13460 cut-off events. For 116741/120488 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 128709 event pairs, 193 based on Foata normal form. 121/12316 useless extension candidates. Maximal degree in co-relation 76751. Up to 6173 conditions per place. [2022-12-06 17:34:54,476 INFO L137 encePairwiseOnDemand]: 87/99 looper letters, 784 selfloop transitions, 203 changer transitions 1078/2195 dead transitions. [2022-12-06 17:34:54,476 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 2195 transitions, 36159 flow [2022-12-06 17:34:54,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-06 17:34:54,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-12-06 17:34:54,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 928 transitions. [2022-12-06 17:34:54,478 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7811447811447811 [2022-12-06 17:34:54,479 INFO L294 CegarLoopForPetriNet]: 89 programPoint places, 75 predicate places. [2022-12-06 17:34:54,479 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 2195 transitions, 36159 flow [2022-12-06 17:34:54,479 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 71.75) internal successors, (574), 8 states have internal predecessors, (574), 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) [2022-12-06 17:34:54,479 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:54,479 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:54,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-06 17:34:54,480 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)] === [2022-12-06 17:34:54,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:54,480 INFO L85 PathProgramCache]: Analyzing trace with hash 113894921, now seen corresponding path program 2 times [2022-12-06 17:34:54,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:54,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315581249] [2022-12-06 17:34:54,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:54,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:54,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:54,569 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:34:54,570 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:54,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315581249] [2022-12-06 17:34:54,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315581249] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:34:54,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:34:54,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 17:34:54,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554381545] [2022-12-06 17:34:54,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:34:54,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 17:34:54,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:54,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 17:34:54,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 17:34:54,571 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 99 [2022-12-06 17:34:54,572 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 2195 transitions, 36159 flow. Second operand has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:34:54,572 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:54,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 99 [2022-12-06 17:34:54,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:34:58,153 INFO L130 PetriNetUnfolder]: 7080/15781 cut-off events. [2022-12-06 17:34:58,153 INFO L131 PetriNetUnfolder]: For 149021/158072 co-relation queries the response was YES. [2022-12-06 17:34:58,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93424 conditions, 15781 events. 7080/15781 cut-off events. For 149021/158072 co-relation queries the response was YES. Maximal size of possible extension queue 729. Compared 155584 event pairs, 280 based on Foata normal form. 450/15132 useless extension candidates. Maximal degree in co-relation 91938. Up to 7477 conditions per place. [2022-12-06 17:34:58,296 INFO L137 encePairwiseOnDemand]: 94/99 looper letters, 653 selfloop transitions, 5 changer transitions 604/2110 dead transitions. [2022-12-06 17:34:58,296 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 2110 transitions, 36616 flow [2022-12-06 17:34:58,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 17:34:58,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 17:34:58,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 355 transitions. [2022-12-06 17:34:58,298 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8964646464646465 [2022-12-06 17:34:58,299 INFO L294 CegarLoopForPetriNet]: 89 programPoint places, 78 predicate places. [2022-12-06 17:34:58,299 INFO L495 AbstractCegarLoop]: Abstraction has has 167 places, 2110 transitions, 36616 flow [2022-12-06 17:34:58,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.5) internal successors, (342), 4 states have internal predecessors, (342), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 17:34:58,299 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:34:58,299 INFO L213 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:34:58,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-06 17:34:58,300 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)] === [2022-12-06 17:34:58,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:34:58,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1964304853, now seen corresponding path program 2 times [2022-12-06 17:34:58,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:34:58,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [117557614] [2022-12-06 17:34:58,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:34:58,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:34:58,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:34:58,393 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-06 17:34:58,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:34:58,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [117557614] [2022-12-06 17:34:58,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [117557614] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 17:34:58,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 17:34:58,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-06 17:34:58,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125412230] [2022-12-06 17:34:58,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 17:34:58,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-06 17:34:58,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:34:58,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-06 17:34:58,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-06 17:34:58,395 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 81 out of 99 [2022-12-06 17:34:58,395 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 167 places, 2110 transitions, 36616 flow. Second operand has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 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) [2022-12-06 17:34:58,395 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:34:58,395 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 81 of 99 [2022-12-06 17:34:58,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:35:02,183 INFO L130 PetriNetUnfolder]: 6460/15058 cut-off events. [2022-12-06 17:35:02,183 INFO L131 PetriNetUnfolder]: For 157310/166547 co-relation queries the response was YES. [2022-12-06 17:35:02,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93332 conditions, 15058 events. 6460/15058 cut-off events. For 157310/166547 co-relation queries the response was YES. Maximal size of possible extension queue 646. Compared 149854 event pairs, 225 based on Foata normal form. 169/14538 useless extension candidates. Maximal degree in co-relation 92001. Up to 7282 conditions per place. [2022-12-06 17:35:02,261 INFO L137 encePairwiseOnDemand]: 94/99 looper letters, 497 selfloop transitions, 5 changer transitions 1261/2241 dead transitions. [2022-12-06 17:35:02,261 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 2241 transitions, 42087 flow [2022-12-06 17:35:02,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-06 17:35:02,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-06 17:35:02,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 353 transitions. [2022-12-06 17:35:02,262 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8914141414141414 [2022-12-06 17:35:02,263 INFO L294 CegarLoopForPetriNet]: 89 programPoint places, 81 predicate places. [2022-12-06 17:35:02,263 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 2241 transitions, 42087 flow [2022-12-06 17:35:02,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 84.75) internal successors, (339), 4 states have internal predecessors, (339), 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) [2022-12-06 17:35:02,263 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:35:02,263 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:35:02,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-06 17:35:02,263 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)] === [2022-12-06 17:35:02,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:35:02,264 INFO L85 PathProgramCache]: Analyzing trace with hash -297081254, now seen corresponding path program 1 times [2022-12-06 17:35:02,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:35:02,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345580346] [2022-12-06 17:35:02,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:35:02,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:35:02,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:35:02,593 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:35:02,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:35:02,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345580346] [2022-12-06 17:35:02,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345580346] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:35:02,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1486986067] [2022-12-06 17:35:02,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:35:02,594 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:35:02,595 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:35:02,613 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) [2022-12-06 17:35:02,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-06 17:35:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:35:02,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-06 17:35:02,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:35:02,804 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:35:02,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:35:02,896 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:35:02,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1486986067] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:35:02,896 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:35:02,896 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 15 [2022-12-06 17:35:02,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672823499] [2022-12-06 17:35:02,897 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:35:02,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-06 17:35:02,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:35:02,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-06 17:35:02,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-12-06 17:35:02,898 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 99 [2022-12-06 17:35:02,899 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 2241 transitions, 42087 flow. Second operand has 15 states, 15 states have (on average 71.66666666666667) internal successors, (1075), 15 states have internal predecessors, (1075), 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) [2022-12-06 17:35:02,899 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:35:02,899 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 99 [2022-12-06 17:35:02,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:35:09,682 INFO L130 PetriNetUnfolder]: 9880/22894 cut-off events. [2022-12-06 17:35:09,682 INFO L131 PetriNetUnfolder]: For 283362/302742 co-relation queries the response was YES. [2022-12-06 17:35:09,768 INFO L83 FinitePrefix]: Finished finitePrefix Result has 159134 conditions, 22894 events. 9880/22894 cut-off events. For 283362/302742 co-relation queries the response was YES. Maximal size of possible extension queue 971. Compared 241703 event pairs, 212 based on Foata normal form. 341/22540 useless extension candidates. Maximal degree in co-relation 155235. Up to 11329 conditions per place. [2022-12-06 17:35:09,855 INFO L137 encePairwiseOnDemand]: 85/99 looper letters, 965 selfloop transitions, 575 changer transitions 2494/4182 dead transitions. [2022-12-06 17:35:09,855 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 4182 transitions, 87530 flow [2022-12-06 17:35:09,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-06 17:35:09,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-06 17:35:09,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2202 transitions. [2022-12-06 17:35:09,859 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7669801462904912 [2022-12-06 17:35:09,859 INFO L294 CegarLoopForPetriNet]: 89 programPoint places, 109 predicate places. [2022-12-06 17:35:09,859 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 4182 transitions, 87530 flow [2022-12-06 17:35:09,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 71.66666666666667) internal successors, (1075), 15 states have internal predecessors, (1075), 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) [2022-12-06 17:35:09,860 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:35:09,860 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:35:09,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-06 17:35:10,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:35:10,065 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)] === [2022-12-06 17:35:10,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:35:10,065 INFO L85 PathProgramCache]: Analyzing trace with hash 1981835990, now seen corresponding path program 2 times [2022-12-06 17:35:10,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:35:10,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794840655] [2022-12-06 17:35:10,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:35:10,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:35:10,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:35:10,443 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:35:10,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:35:10,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794840655] [2022-12-06 17:35:10,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794840655] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:35:10,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1923979703] [2022-12-06 17:35:10,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 17:35:10,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:35:10,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:35:10,461 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) [2022-12-06 17:35:10,462 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-06 17:35:10,532 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 17:35:10,532 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:35:10,533 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-06 17:35:10,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:35:10,646 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:35:10,647 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:35:10,736 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:35:10,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1923979703] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:35:10,737 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:35:10,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 15 [2022-12-06 17:35:10,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095412283] [2022-12-06 17:35:10,738 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:35:10,739 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-06 17:35:10,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:35:10,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-06 17:35:10,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-12-06 17:35:10,740 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 99 [2022-12-06 17:35:10,741 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 4182 transitions, 87530 flow. Second operand has 15 states, 15 states have (on average 71.8) internal successors, (1077), 15 states have internal predecessors, (1077), 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) [2022-12-06 17:35:10,741 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:35:10,741 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 99 [2022-12-06 17:35:10,741 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:35:35,345 INFO L130 PetriNetUnfolder]: 19475/44876 cut-off events. [2022-12-06 17:35:35,345 INFO L131 PetriNetUnfolder]: For 660158/676364 co-relation queries the response was YES. [2022-12-06 17:35:35,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340456 conditions, 44876 events. 19475/44876 cut-off events. For 660158/676364 co-relation queries the response was YES. Maximal size of possible extension queue 1901. Compared 519739 event pairs, 398 based on Foata normal form. 487/44237 useless extension candidates. Maximal degree in co-relation 336237. Up to 23428 conditions per place. [2022-12-06 17:35:35,639 INFO L137 encePairwiseOnDemand]: 85/99 looper letters, 1975 selfloop transitions, 985 changer transitions 4985/8144 dead transitions. [2022-12-06 17:35:35,639 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 226 places, 8144 transitions, 187588 flow [2022-12-06 17:35:35,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-12-06 17:35:35,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2022-12-06 17:35:35,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 2184 transitions. [2022-12-06 17:35:35,644 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7607105538140021 [2022-12-06 17:35:35,645 INFO L294 CegarLoopForPetriNet]: 89 programPoint places, 137 predicate places. [2022-12-06 17:35:35,645 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 8144 transitions, 187588 flow [2022-12-06 17:35:35,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 71.8) internal successors, (1077), 15 states have internal predecessors, (1077), 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) [2022-12-06 17:35:35,645 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 17:35:35,646 INFO L213 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 17:35:35,653 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-06 17:35:35,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:35:35,851 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)] === [2022-12-06 17:35:35,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 17:35:35,853 INFO L85 PathProgramCache]: Analyzing trace with hash -2019026980, now seen corresponding path program 3 times [2022-12-06 17:35:35,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 17:35:35,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285764865] [2022-12-06 17:35:35,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 17:35:35,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 17:35:35,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 17:35:36,109 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:35:36,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 17:35:36,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285764865] [2022-12-06 17:35:36,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285764865] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 17:35:36,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1422056158] [2022-12-06 17:35:36,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 17:35:36,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 17:35:36,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 17:35:36,116 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) [2022-12-06 17:35:36,123 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-06 17:35:36,199 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2022-12-06 17:35:36,199 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 17:35:36,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 14 conjunts are in the unsatisfiable core [2022-12-06 17:35:36,203 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 17:35:36,348 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:35:36,348 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 17:35:36,481 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 17:35:36,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1422056158] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 17:35:36,481 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 17:35:36,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 19 [2022-12-06 17:35:36,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547452035] [2022-12-06 17:35:36,481 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 17:35:36,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 17:35:36,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 17:35:36,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 17:35:36,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2022-12-06 17:35:36,483 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 99 [2022-12-06 17:35:36,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 8144 transitions, 187588 flow. Second operand has 19 states, 19 states have (on average 60.8421052631579) internal successors, (1156), 19 states have internal predecessors, (1156), 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) [2022-12-06 17:35:36,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 17:35:36,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 99 [2022-12-06 17:35:36,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 17:37:25,167 INFO L130 PetriNetUnfolder]: 36251/71457 cut-off events. [2022-12-06 17:37:25,167 INFO L131 PetriNetUnfolder]: For 845954/853288 co-relation queries the response was YES. [2022-12-06 17:37:25,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 531505 conditions, 71457 events. 36251/71457 cut-off events. For 845954/853288 co-relation queries the response was YES. Maximal size of possible extension queue 2089. Compared 737245 event pairs, 1797 based on Foata normal form. 121/69930 useless extension candidates. Maximal degree in co-relation 531337. Up to 29979 conditions per place. [2022-12-06 17:37:25,532 INFO L137 encePairwiseOnDemand]: 83/99 looper letters, 0 selfloop transitions, 0 changer transitions 11552/11552 dead transitions. [2022-12-06 17:37:25,532 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 11552 transitions, 272806 flow [2022-12-06 17:37:25,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-12-06 17:37:25,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2022-12-06 17:37:25,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 3031 transitions. [2022-12-06 17:37:25,535 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6803591470258137 [2022-12-06 17:37:25,536 INFO L294 CegarLoopForPetriNet]: 89 programPoint places, 169 predicate places. [2022-12-06 17:37:25,536 INFO L495 AbstractCegarLoop]: Abstraction has has 258 places, 11552 transitions, 272806 flow [2022-12-06 17:37:25,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 60.8421052631579) internal successors, (1156), 19 states have internal predecessors, (1156), 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) [2022-12-06 17:37:25,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-06 17:37:25,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-06 17:37:25,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-06 17:37:25,538 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-06 17:37:25,543 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-06 17:37:25,742 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,SelfDestructingSolverStorable13 [2022-12-06 17:37:25,743 INFO L458 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 2, 2] [2022-12-06 17:37:25,745 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 17:37:25,746 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 17:37:25,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 05:37:25 BasicIcfg [2022-12-06 17:37:25,748 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 17:37:25,749 INFO L158 Benchmark]: Toolchain (without parser) took 160483.14ms. Allocated memory was 218.1MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 194.6MB in the beginning and 943.5MB in the end (delta: -748.9MB). Peak memory consumption was 3.4GB. Max. memory is 8.0GB. [2022-12-06 17:37:25,749 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 218.1MB. Free memory is still 194.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 17:37:25,749 INFO L158 Benchmark]: CACSL2BoogieTranslator took 213.66ms. Allocated memory is still 218.1MB. Free memory was 194.6MB in the beginning and 181.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-06 17:37:25,749 INFO L158 Benchmark]: Boogie Procedure Inliner took 33.26ms. Allocated memory is still 218.1MB. Free memory was 181.5MB in the beginning and 179.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 17:37:25,749 INFO L158 Benchmark]: Boogie Preprocessor took 29.65ms. Allocated memory is still 218.1MB. Free memory was 179.9MB in the beginning and 178.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 17:37:25,749 INFO L158 Benchmark]: RCFGBuilder took 279.34ms. Allocated memory is still 218.1MB. Free memory was 178.4MB in the beginning and 163.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-12-06 17:37:25,750 INFO L158 Benchmark]: TraceAbstraction took 159922.12ms. Allocated memory was 218.1MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 163.2MB in the beginning and 943.5MB in the end (delta: -780.4MB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. [2022-12-06 17:37:25,750 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 218.1MB. Free memory is still 194.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 213.66ms. Allocated memory is still 218.1MB. Free memory was 194.6MB in the beginning and 181.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 33.26ms. Allocated memory is still 218.1MB. Free memory was 181.5MB in the beginning and 179.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.65ms. Allocated memory is still 218.1MB. Free memory was 179.9MB in the beginning and 178.4MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 279.34ms. Allocated memory is still 218.1MB. Free memory was 178.4MB in the beginning and 163.7MB in the end (delta: 14.7MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * TraceAbstraction took 159922.12ms. Allocated memory was 218.1MB in the beginning and 3.7GB in the end (delta: 3.5GB). Free memory was 163.2MB in the beginning and 943.5MB in the end (delta: -780.4MB). Peak memory consumption was 3.3GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 116]: 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 7 procedures, 120 locations, 4 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: 159.8s, OverallIterations: 14, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 154.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1378 SdHoareTripleChecker+Valid, 2.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1378 mSDsluCounter, 1464 SdHoareTripleChecker+Invalid, 1.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1175 mSDsCounter, 171 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4049 IncrementalHoareTripleChecker+Invalid, 4220 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 171 mSolverCounterUnsat, 289 mSDtfsCounter, 4049 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1045 GetRequests, 812 SyntacticMatches, 20 SemanticMatches, 213 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1706 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=272806occurred in iteration=14, InterpolantAutomatonStates: 195, 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: 0.1s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 3.6s InterpolantComputationTime, 1497 NumberOfCodeBlocks, 1497 NumberOfCodeBlocksAsserted, 23 NumberOfCheckSat, 1888 ConstructedInterpolants, 0 QuantifiedInterpolants, 4953 SizeOfPredicates, 36 NumberOfNonLiveVariables, 1068 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 24 InterpolantComputations, 9 PerfectInterpolantSequences, 98/170 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! [2022-12-06 17:37:25,768 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...