/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 -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-05 19:21:17,424 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-05 19:21:17,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-05 19:21:17,451 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-05 19:21:17,451 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-05 19:21:17,452 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-05 19:21:17,454 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-05 19:21:17,455 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-05 19:21:17,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-05 19:21:17,457 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-05 19:21:17,458 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-05 19:21:17,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-05 19:21:17,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-05 19:21:17,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-05 19:21:17,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-05 19:21:17,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-05 19:21:17,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-05 19:21:17,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-05 19:21:17,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-05 19:21:17,466 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-05 19:21:17,467 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-05 19:21:17,468 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-05 19:21:17,469 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-05 19:21:17,470 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-05 19:21:17,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-05 19:21:17,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-05 19:21:17,474 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-05 19:21:17,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-05 19:21:17,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-05 19:21:17,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-05 19:21:17,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-05 19:21:17,477 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-05 19:21:17,477 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-05 19:21:17,478 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-05 19:21:17,479 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-05 19:21:17,500 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-05 19:21:17,501 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-05 19:21:17,501 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-05 19:21:17,501 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-05 19:21:17,502 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-05 19:21:17,502 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-05 19:21:17,510 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 [2022-12-05 19:21:17,529 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-05 19:21:17,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-05 19:21:17,530 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-05 19:21:17,530 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-05 19:21:17,530 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-05 19:21:17,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-05 19:21:17,530 INFO L138 SettingsManager]: * Use SBE=true [2022-12-05 19:21:17,531 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-05 19:21:17,531 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-05 19:21:17,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-05 19:21:17,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-05 19:21:17,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-05 19:21:17,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-05 19:21:17,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-05 19:21:17,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-05 19:21:17,532 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-05 19:21:17,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-05 19:21:17,532 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-05 19:21:17,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-05 19:21:17,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-05 19:21:17,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-05 19:21:17,533 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-05 19:21:17,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-05 19:21:17,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 19:21:17,533 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-05 19:21:17,533 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-05 19:21:17,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-05 19:21:17,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-05 19:21:17,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-05 19:21:17,534 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-05 19:21:17,534 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-05 19:21:17,534 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-12-05 19:21:17,888 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-05 19:21:17,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-05 19:21:17,921 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-05 19:21:17,921 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-05 19:21:17,922 INFO L275 PluginConnector]: CDTParser initialized [2022-12-05 19:21:17,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2022-12-05 19:21:18,973 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-05 19:21:19,161 INFO L351 CDTParser]: Found 1 translation units. [2022-12-05 19:21:19,162 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c [2022-12-05 19:21:19,170 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dbd95abf/7bbc7fa9c1ed467cbd150bec68cc8444/FLAG656851655 [2022-12-05 19:21:19,182 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9dbd95abf/7bbc7fa9c1ed467cbd150bec68cc8444 [2022-12-05 19:21:19,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-05 19:21:19,186 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-05 19:21:19,187 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-05 19:21:19,187 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-05 19:21:19,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-05 19:21:19,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 07:21:19" (1/1) ... [2022-12-05 19:21:19,191 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d042105 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:21:19, skipping insertion in model container [2022-12-05 19:21:19,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.12 07:21:19" (1/1) ... [2022-12-05 19:21:19,199 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-05 19:21:19,225 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-05 19:21:19,386 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,389 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,390 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,393 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,393 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,394 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,397 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,398 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,399 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,404 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,405 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,406 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,407 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,408 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,410 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,411 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,413 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,417 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,418 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,419 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,421 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,422 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,438 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2022-12-05 19:21:19,451 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 19:21:19,460 INFO L203 MainTranslator]: Completed pre-run [2022-12-05 19:21:19,474 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,476 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,477 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,478 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,479 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,480 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,482 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,484 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,487 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,489 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,493 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,493 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,494 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,494 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,495 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,496 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,496 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,499 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-05 19:21:19,500 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-05 19:21:19,503 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-more-buffer-mult2.wvr.c[4099,4112] [2022-12-05 19:21:19,506 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-05 19:21:19,518 INFO L208 MainTranslator]: Completed translation [2022-12-05 19:21:19,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:21:19 WrapperNode [2022-12-05 19:21:19,519 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-05 19:21:19,520 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-05 19:21:19,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-05 19:21:19,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-05 19:21:19,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:21:19" (1/1) ... [2022-12-05 19:21:19,550 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:21:19" (1/1) ... [2022-12-05 19:21:19,599 INFO L138 Inliner]: procedures = 27, calls = 76, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 303 [2022-12-05 19:21:19,599 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-05 19:21:19,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-05 19:21:19,600 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-05 19:21:19,600 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-05 19:21:19,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:21:19" (1/1) ... [2022-12-05 19:21:19,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:21:19" (1/1) ... [2022-12-05 19:21:19,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:21:19" (1/1) ... [2022-12-05 19:21:19,621 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:21:19" (1/1) ... [2022-12-05 19:21:19,629 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:21:19" (1/1) ... [2022-12-05 19:21:19,649 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:21:19" (1/1) ... [2022-12-05 19:21:19,651 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:21:19" (1/1) ... [2022-12-05 19:21:19,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:21:19" (1/1) ... [2022-12-05 19:21:19,655 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-05 19:21:19,656 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-05 19:21:19,656 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-05 19:21:19,656 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-05 19:21:19,657 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:21:19" (1/1) ... [2022-12-05 19:21:19,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-05 19:21:19,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:21:19,688 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) [2022-12-05 19:21:19,716 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 [2022-12-05 19:21:19,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-05 19:21:19,737 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-05 19:21:19,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-05 19:21:19,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-05 19:21:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-05 19:21:19,738 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-05 19:21:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-05 19:21:19,738 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-05 19:21:19,738 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-05 19:21:19,739 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-05 19:21:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-12-05 19:21:19,739 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-12-05 19:21:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-05 19:21:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-05 19:21:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-05 19:21:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-05 19:21:19,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-05 19:21:19,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-05 19:21:19,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-05 19:21:19,741 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-05 19:21:19,860 INFO L236 CfgBuilder]: Building ICFG [2022-12-05 19:21:19,862 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-05 19:21:20,255 INFO L277 CfgBuilder]: Performing block encoding [2022-12-05 19:21:20,395 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-05 19:21:20,396 INFO L302 CfgBuilder]: Removed 6 assume(true) statements. [2022-12-05 19:21:20,399 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 07:21:20 BoogieIcfgContainer [2022-12-05 19:21:20,399 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-05 19:21:20,402 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-05 19:21:20,402 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-05 19:21:20,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-05 19:21:20,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.12 07:21:19" (1/3) ... [2022-12-05 19:21:20,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a853f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 07:21:20, skipping insertion in model container [2022-12-05 19:21:20,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.12 07:21:19" (2/3) ... [2022-12-05 19:21:20,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a853f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.12 07:21:20, skipping insertion in model container [2022-12-05 19:21:20,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.12 07:21:20" (3/3) ... [2022-12-05 19:21:20,407 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult2.wvr.c [2022-12-05 19:21:20,423 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-05 19:21:20,423 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-05 19:21:20,423 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-05 19:21:20,516 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-12-05 19:21:20,556 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 207 places, 212 transitions, 456 flow [2022-12-05 19:21:20,682 INFO L130 PetriNetUnfolder]: 18/208 cut-off events. [2022-12-05 19:21:20,682 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 19:21:20,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 225 conditions, 208 events. 18/208 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 106 event pairs, 0 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 171. Up to 2 conditions per place. [2022-12-05 19:21:20,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 207 places, 212 transitions, 456 flow [2022-12-05 19:21:20,697 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 196 transitions, 416 flow [2022-12-05 19:21:20,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-05 19:21:20,719 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;@626ae2d1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-05 19:21:20,720 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-12-05 19:21:20,775 INFO L130 PetriNetUnfolder]: 18/195 cut-off events. [2022-12-05 19:21:20,776 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-05 19:21:20,776 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:21:20,777 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:21:20,778 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 2 more)] === [2022-12-05 19:21:20,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:21:20,782 INFO L85 PathProgramCache]: Analyzing trace with hash -394812171, now seen corresponding path program 1 times [2022-12-05 19:21:20,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:21:20,794 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795680982] [2022-12-05 19:21:20,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:21:20,794 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:21:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:21:21,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:21:21,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:21:21,652 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795680982] [2022-12-05 19:21:21,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795680982] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:21:21,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:21:21,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 19:21:21,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102873490] [2022-12-05 19:21:21,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:21:21,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 19:21:21,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:21:21,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 19:21:21,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 19:21:21,694 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 212 [2022-12-05 19:21:21,700 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 196 transitions, 416 flow. Second operand has 5 states, 5 states have (on average 162.6) internal successors, (813), 5 states have internal predecessors, (813), 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) [2022-12-05 19:21:21,700 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:21:21,701 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 212 [2022-12-05 19:21:21,702 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:21:21,958 INFO L130 PetriNetUnfolder]: 133/499 cut-off events. [2022-12-05 19:21:21,964 INFO L131 PetriNetUnfolder]: For 109/110 co-relation queries the response was YES. [2022-12-05 19:21:21,970 INFO L83 FinitePrefix]: Finished finitePrefix Result has 773 conditions, 499 events. 133/499 cut-off events. For 109/110 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1578 event pairs, 14 based on Foata normal form. 135/587 useless extension candidates. Maximal degree in co-relation 506. Up to 133 conditions per place. [2022-12-05 19:21:21,974 INFO L137 encePairwiseOnDemand]: 188/212 looper letters, 42 selfloop transitions, 3 changer transitions 11/197 dead transitions. [2022-12-05 19:21:21,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 197 transitions, 545 flow [2022-12-05 19:21:21,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 19:21:21,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 19:21:21,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1166 transitions. [2022-12-05 19:21:21,994 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7857142857142857 [2022-12-05 19:21:21,995 INFO L175 Difference]: Start difference. First operand has 191 places, 196 transitions, 416 flow. Second operand 7 states and 1166 transitions. [2022-12-05 19:21:21,996 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 197 transitions, 545 flow [2022-12-05 19:21:22,000 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 197 transitions, 519 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-12-05 19:21:22,005 INFO L231 Difference]: Finished difference. Result has 192 places, 180 transitions, 387 flow [2022-12-05 19:21:22,007 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=376, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=387, PETRI_PLACES=192, PETRI_TRANSITIONS=180} [2022-12-05 19:21:22,010 INFO L294 CegarLoopForPetriNet]: 191 programPoint places, 1 predicate places. [2022-12-05 19:21:22,010 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 180 transitions, 387 flow [2022-12-05 19:21:22,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 162.6) internal successors, (813), 5 states have internal predecessors, (813), 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) [2022-12-05 19:21:22,011 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:21:22,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:21:22,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-05 19:21:22,011 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 2 more)] === [2022-12-05 19:21:22,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:21:22,012 INFO L85 PathProgramCache]: Analyzing trace with hash -104415916, now seen corresponding path program 1 times [2022-12-05 19:21:22,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:21:22,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377598183] [2022-12-05 19:21:22,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:21:22,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:21:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:21:22,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:21:22,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:21:22,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377598183] [2022-12-05 19:21:22,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377598183] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:21:22,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:21:22,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 19:21:22,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96686096] [2022-12-05 19:21:22,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:21:22,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:21:22,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:21:22,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:21:22,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 19:21:22,227 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 212 [2022-12-05 19:21:22,228 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 180 transitions, 387 flow. Second operand has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 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) [2022-12-05 19:21:22,228 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:21:22,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 212 [2022-12-05 19:21:22,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:21:22,420 INFO L130 PetriNetUnfolder]: 208/735 cut-off events. [2022-12-05 19:21:22,420 INFO L131 PetriNetUnfolder]: For 135/135 co-relation queries the response was YES. [2022-12-05 19:21:22,422 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1165 conditions, 735 events. 208/735 cut-off events. For 135/135 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3283 event pairs, 75 based on Foata normal form. 12/649 useless extension candidates. Maximal degree in co-relation 1151. Up to 207 conditions per place. [2022-12-05 19:21:22,427 INFO L137 encePairwiseOnDemand]: 209/212 looper letters, 30 selfloop transitions, 2 changer transitions 0/192 dead transitions. [2022-12-05 19:21:22,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 192 transitions, 487 flow [2022-12-05 19:21:22,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:21:22,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:21:22,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 573 transitions. [2022-12-05 19:21:22,430 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.9009433962264151 [2022-12-05 19:21:22,431 INFO L175 Difference]: Start difference. First operand has 192 places, 180 transitions, 387 flow. Second operand 3 states and 573 transitions. [2022-12-05 19:21:22,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 192 transitions, 487 flow [2022-12-05 19:21:22,434 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 192 transitions, 479 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-12-05 19:21:22,437 INFO L231 Difference]: Finished difference. Result has 182 places, 181 transitions, 394 flow [2022-12-05 19:21:22,438 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=180, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=394, PETRI_PLACES=182, PETRI_TRANSITIONS=181} [2022-12-05 19:21:22,439 INFO L294 CegarLoopForPetriNet]: 191 programPoint places, -9 predicate places. [2022-12-05 19:21:22,439 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 181 transitions, 394 flow [2022-12-05 19:21:22,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 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) [2022-12-05 19:21:22,440 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:21:22,440 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:21:22,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-05 19:21:22,441 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 2 more)] === [2022-12-05 19:21:22,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:21:22,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1788026126, now seen corresponding path program 1 times [2022-12-05 19:21:22,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:21:22,441 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108949786] [2022-12-05 19:21:22,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:21:22,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:21:22,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:21:22,598 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-05 19:21:22,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:21:22,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108949786] [2022-12-05 19:21:22,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108949786] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:21:22,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:21:22,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-05 19:21:22,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063080803] [2022-12-05 19:21:22,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:21:22,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-05 19:21:22,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:21:22,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-05 19:21:22,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-05 19:21:22,602 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 181 out of 212 [2022-12-05 19:21:22,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 181 transitions, 394 flow. Second operand has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 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) [2022-12-05 19:21:22,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:21:22,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 181 of 212 [2022-12-05 19:21:22,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:21:22,733 INFO L130 PetriNetUnfolder]: 152/643 cut-off events. [2022-12-05 19:21:22,733 INFO L131 PetriNetUnfolder]: For 212/215 co-relation queries the response was YES. [2022-12-05 19:21:22,735 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1038 conditions, 643 events. 152/643 cut-off events. For 212/215 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 2732 event pairs, 27 based on Foata normal form. 12/583 useless extension candidates. Maximal degree in co-relation 521. Up to 171 conditions per place. [2022-12-05 19:21:22,738 INFO L137 encePairwiseOnDemand]: 209/212 looper letters, 31 selfloop transitions, 2 changer transitions 0/193 dead transitions. [2022-12-05 19:21:22,738 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 193 transitions, 503 flow [2022-12-05 19:21:22,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-05 19:21:22,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-05 19:21:22,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 572 transitions. [2022-12-05 19:21:22,740 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.89937106918239 [2022-12-05 19:21:22,740 INFO L175 Difference]: Start difference. First operand has 182 places, 181 transitions, 394 flow. Second operand 3 states and 572 transitions. [2022-12-05 19:21:22,740 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 193 transitions, 503 flow [2022-12-05 19:21:22,741 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 193 transitions, 500 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 19:21:22,744 INFO L231 Difference]: Finished difference. Result has 184 places, 182 transitions, 406 flow [2022-12-05 19:21:22,744 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=392, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=181, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=406, PETRI_PLACES=184, PETRI_TRANSITIONS=182} [2022-12-05 19:21:22,745 INFO L294 CegarLoopForPetriNet]: 191 programPoint places, -7 predicate places. [2022-12-05 19:21:22,745 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 182 transitions, 406 flow [2022-12-05 19:21:22,745 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 186.0) internal successors, (558), 3 states have internal predecessors, (558), 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) [2022-12-05 19:21:22,745 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:21:22,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:21:22,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-05 19:21:22,746 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 2 more)] === [2022-12-05 19:21:22,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:21:22,746 INFO L85 PathProgramCache]: Analyzing trace with hash 444675253, now seen corresponding path program 1 times [2022-12-05 19:21:22,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:21:22,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894339888] [2022-12-05 19:21:22,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:21:22,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:21:22,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:21:22,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:21:22,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:21:22,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894339888] [2022-12-05 19:21:22,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894339888] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:21:22,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:21:22,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 19:21:22,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827900949] [2022-12-05 19:21:22,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:21:22,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 19:21:22,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:21:22,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 19:21:22,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-05 19:21:22,955 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 212 [2022-12-05 19:21:22,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 182 transitions, 406 flow. Second operand has 6 states, 6 states have (on average 165.66666666666666) internal successors, (994), 6 states have internal predecessors, (994), 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) [2022-12-05 19:21:22,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:21:22,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 212 [2022-12-05 19:21:22,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:21:23,145 INFO L130 PetriNetUnfolder]: 107/675 cut-off events. [2022-12-05 19:21:23,146 INFO L131 PetriNetUnfolder]: For 229/230 co-relation queries the response was YES. [2022-12-05 19:21:23,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1108 conditions, 675 events. 107/675 cut-off events. For 229/230 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2752 event pairs, 36 based on Foata normal form. 8/616 useless extension candidates. Maximal degree in co-relation 599. Up to 155 conditions per place. [2022-12-05 19:21:23,150 INFO L137 encePairwiseOnDemand]: 202/212 looper letters, 60 selfloop transitions, 11 changer transitions 0/211 dead transitions. [2022-12-05 19:21:23,150 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 211 transitions, 627 flow [2022-12-05 19:21:23,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 19:21:23,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 19:21:23,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1515 transitions. [2022-12-05 19:21:23,154 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7940251572327044 [2022-12-05 19:21:23,154 INFO L175 Difference]: Start difference. First operand has 184 places, 182 transitions, 406 flow. Second operand 9 states and 1515 transitions. [2022-12-05 19:21:23,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 211 transitions, 627 flow [2022-12-05 19:21:23,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 211 transitions, 624 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-12-05 19:21:23,159 INFO L231 Difference]: Finished difference. Result has 193 places, 186 transitions, 446 flow [2022-12-05 19:21:23,159 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=404, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=446, PETRI_PLACES=193, PETRI_TRANSITIONS=186} [2022-12-05 19:21:23,161 INFO L294 CegarLoopForPetriNet]: 191 programPoint places, 2 predicate places. [2022-12-05 19:21:23,161 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 186 transitions, 446 flow [2022-12-05 19:21:23,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.66666666666666) internal successors, (994), 6 states have internal predecessors, (994), 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) [2022-12-05 19:21:23,162 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:21:23,162 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:21:23,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-05 19:21:23,162 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 2 more)] === [2022-12-05 19:21:23,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:21:23,163 INFO L85 PathProgramCache]: Analyzing trace with hash 364047437, now seen corresponding path program 1 times [2022-12-05 19:21:23,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:21:23,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632861692] [2022-12-05 19:21:23,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:21:23,164 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:21:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:21:23,400 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:21:23,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:21:23,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632861692] [2022-12-05 19:21:23,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632861692] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:21:23,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:21:23,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-05 19:21:23,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2100376813] [2022-12-05 19:21:23,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:21:23,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-05 19:21:23,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:21:23,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-05 19:21:23,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-05 19:21:23,404 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 212 [2022-12-05 19:21:23,405 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 186 transitions, 446 flow. Second operand has 6 states, 6 states have (on average 165.66666666666666) internal successors, (994), 6 states have internal predecessors, (994), 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) [2022-12-05 19:21:23,405 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:21:23,405 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 212 [2022-12-05 19:21:23,405 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:21:23,632 INFO L130 PetriNetUnfolder]: 123/891 cut-off events. [2022-12-05 19:21:23,632 INFO L131 PetriNetUnfolder]: For 321/323 co-relation queries the response was YES. [2022-12-05 19:21:23,635 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1434 conditions, 891 events. 123/891 cut-off events. For 321/323 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 4381 event pairs, 42 based on Foata normal form. 15/825 useless extension candidates. Maximal degree in co-relation 970. Up to 198 conditions per place. [2022-12-05 19:21:23,638 INFO L137 encePairwiseOnDemand]: 204/212 looper letters, 55 selfloop transitions, 8 changer transitions 0/203 dead transitions. [2022-12-05 19:21:23,638 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 203 transitions, 628 flow [2022-12-05 19:21:23,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-05 19:21:23,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-05 19:21:23,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1181 transitions. [2022-12-05 19:21:23,641 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.795822102425876 [2022-12-05 19:21:23,641 INFO L175 Difference]: Start difference. First operand has 193 places, 186 transitions, 446 flow. Second operand 7 states and 1181 transitions. [2022-12-05 19:21:23,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 203 transitions, 628 flow [2022-12-05 19:21:23,645 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 203 transitions, 619 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-05 19:21:23,647 INFO L231 Difference]: Finished difference. Result has 198 places, 188 transitions, 467 flow [2022-12-05 19:21:23,648 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=437, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=178, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=467, PETRI_PLACES=198, PETRI_TRANSITIONS=188} [2022-12-05 19:21:23,650 INFO L294 CegarLoopForPetriNet]: 191 programPoint places, 7 predicate places. [2022-12-05 19:21:23,650 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 188 transitions, 467 flow [2022-12-05 19:21:23,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.66666666666666) internal successors, (994), 6 states have internal predecessors, (994), 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) [2022-12-05 19:21:23,651 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:21:23,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:21:23,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-05 19:21:23,652 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 2 more)] === [2022-12-05 19:21:23,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:21:23,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1778846582, now seen corresponding path program 1 times [2022-12-05 19:21:23,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:21:23,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919987849] [2022-12-05 19:21:23,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:21:23,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:21:23,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:21:24,235 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:21:24,235 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:21:24,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919987849] [2022-12-05 19:21:24,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919987849] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:21:24,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:21:24,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-05 19:21:24,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556060647] [2022-12-05 19:21:24,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:21:24,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 19:21:24,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:21:24,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 19:21:24,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-05 19:21:24,239 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 212 [2022-12-05 19:21:24,240 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 188 transitions, 467 flow. Second operand has 7 states, 7 states have (on average 173.42857142857142) internal successors, (1214), 7 states have internal predecessors, (1214), 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) [2022-12-05 19:21:24,240 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:21:24,240 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 212 [2022-12-05 19:21:24,240 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:21:25,682 INFO L130 PetriNetUnfolder]: 4322/8916 cut-off events. [2022-12-05 19:21:25,682 INFO L131 PetriNetUnfolder]: For 2876/2891 co-relation queries the response was YES. [2022-12-05 19:21:25,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17949 conditions, 8916 events. 4322/8916 cut-off events. For 2876/2891 co-relation queries the response was YES. Maximal size of possible extension queue 391. Compared 71207 event pairs, 869 based on Foata normal form. 8/7544 useless extension candidates. Maximal degree in co-relation 13458. Up to 3155 conditions per place. [2022-12-05 19:21:25,746 INFO L137 encePairwiseOnDemand]: 202/212 looper letters, 68 selfloop transitions, 11 changer transitions 15/249 dead transitions. [2022-12-05 19:21:25,747 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 249 transitions, 828 flow [2022-12-05 19:21:25,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-05 19:21:25,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-05 19:21:25,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1451 transitions. [2022-12-05 19:21:25,750 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8555424528301887 [2022-12-05 19:21:25,750 INFO L175 Difference]: Start difference. First operand has 198 places, 188 transitions, 467 flow. Second operand 8 states and 1451 transitions. [2022-12-05 19:21:25,750 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 249 transitions, 828 flow [2022-12-05 19:21:25,753 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 249 transitions, 816 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-12-05 19:21:25,756 INFO L231 Difference]: Finished difference. Result has 205 places, 194 transitions, 526 flow [2022-12-05 19:21:25,757 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=455, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=180, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=526, PETRI_PLACES=205, PETRI_TRANSITIONS=194} [2022-12-05 19:21:25,757 INFO L294 CegarLoopForPetriNet]: 191 programPoint places, 14 predicate places. [2022-12-05 19:21:25,757 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 194 transitions, 526 flow [2022-12-05 19:21:25,758 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.42857142857142) internal successors, (1214), 7 states have internal predecessors, (1214), 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) [2022-12-05 19:21:25,758 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:21:25,759 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:21:25,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-05 19:21:25,759 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 2 more)] === [2022-12-05 19:21:25,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:21:25,759 INFO L85 PathProgramCache]: Analyzing trace with hash 396381092, now seen corresponding path program 2 times [2022-12-05 19:21:25,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:21:25,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150690584] [2022-12-05 19:21:25,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:21:25,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:21:25,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:21:26,340 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:21:26,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:21:26,343 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150690584] [2022-12-05 19:21:26,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150690584] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:21:26,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:21:26,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 19:21:26,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106922485] [2022-12-05 19:21:26,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:21:26,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 19:21:26,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:21:26,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 19:21:26,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-05 19:21:26,350 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 212 [2022-12-05 19:21:26,352 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 194 transitions, 526 flow. Second operand has 8 states, 8 states have (on average 169.5) internal successors, (1356), 8 states have internal predecessors, (1356), 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) [2022-12-05 19:21:26,352 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:21:26,352 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 212 [2022-12-05 19:21:26,352 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:21:27,750 INFO L130 PetriNetUnfolder]: 3696/7606 cut-off events. [2022-12-05 19:21:27,751 INFO L131 PetriNetUnfolder]: For 4767/4793 co-relation queries the response was YES. [2022-12-05 19:21:27,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16998 conditions, 7606 events. 3696/7606 cut-off events. For 4767/4793 co-relation queries the response was YES. Maximal size of possible extension queue 289. Compared 57213 event pairs, 1323 based on Foata normal form. 26/6936 useless extension candidates. Maximal degree in co-relation 12725. Up to 2765 conditions per place. [2022-12-05 19:21:27,803 INFO L137 encePairwiseOnDemand]: 202/212 looper letters, 79 selfloop transitions, 23 changer transitions 7/260 dead transitions. [2022-12-05 19:21:27,803 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 260 transitions, 1017 flow [2022-12-05 19:21:27,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 19:21:27,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 19:21:27,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1593 transitions. [2022-12-05 19:21:27,807 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8349056603773585 [2022-12-05 19:21:27,807 INFO L175 Difference]: Start difference. First operand has 205 places, 194 transitions, 526 flow. Second operand 9 states and 1593 transitions. [2022-12-05 19:21:27,807 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 260 transitions, 1017 flow [2022-12-05 19:21:27,816 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 260 transitions, 1013 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-12-05 19:21:27,820 INFO L231 Difference]: Finished difference. Result has 215 places, 209 transitions, 714 flow [2022-12-05 19:21:27,820 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=522, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=714, PETRI_PLACES=215, PETRI_TRANSITIONS=209} [2022-12-05 19:21:27,821 INFO L294 CegarLoopForPetriNet]: 191 programPoint places, 24 predicate places. [2022-12-05 19:21:27,821 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 209 transitions, 714 flow [2022-12-05 19:21:27,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 169.5) internal successors, (1356), 8 states have internal predecessors, (1356), 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) [2022-12-05 19:21:27,822 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:21:27,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:21:27,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-05 19:21:27,822 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 2 more)] === [2022-12-05 19:21:27,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:21:27,823 INFO L85 PathProgramCache]: Analyzing trace with hash -2114325212, now seen corresponding path program 3 times [2022-12-05 19:21:27,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:21:27,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487768393] [2022-12-05 19:21:27,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:21:27,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:21:27,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:21:28,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:21:28,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:21:28,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487768393] [2022-12-05 19:21:28,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487768393] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:21:28,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:21:28,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-05 19:21:28,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206890843] [2022-12-05 19:21:28,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:21:28,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-05 19:21:28,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:21:28,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-05 19:21:28,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2022-12-05 19:21:28,463 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 212 [2022-12-05 19:21:28,465 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 209 transitions, 714 flow. Second operand has 9 states, 9 states have (on average 172.66666666666666) internal successors, (1554), 9 states have internal predecessors, (1554), 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) [2022-12-05 19:21:28,466 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:21:28,466 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 212 [2022-12-05 19:21:28,466 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:21:30,763 INFO L130 PetriNetUnfolder]: 5626/13992 cut-off events. [2022-12-05 19:21:30,764 INFO L131 PetriNetUnfolder]: For 11025/11277 co-relation queries the response was YES. [2022-12-05 19:21:30,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31587 conditions, 13992 events. 5626/13992 cut-off events. For 11025/11277 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 137580 event pairs, 1545 based on Foata normal form. 68/12674 useless extension candidates. Maximal degree in co-relation 23087. Up to 3659 conditions per place. [2022-12-05 19:21:30,924 INFO L137 encePairwiseOnDemand]: 202/212 looper letters, 107 selfloop transitions, 37 changer transitions 8/308 dead transitions. [2022-12-05 19:21:30,924 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 308 transitions, 1475 flow [2022-12-05 19:21:30,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 19:21:30,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 19:21:30,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1653 transitions. [2022-12-05 19:21:30,928 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8663522012578616 [2022-12-05 19:21:30,928 INFO L175 Difference]: Start difference. First operand has 215 places, 209 transitions, 714 flow. Second operand 9 states and 1653 transitions. [2022-12-05 19:21:30,928 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 308 transitions, 1475 flow [2022-12-05 19:21:30,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 220 places, 308 transitions, 1437 flow, removed 1 selfloop flow, removed 3 redundant places. [2022-12-05 19:21:30,983 INFO L231 Difference]: Finished difference. Result has 224 places, 227 transitions, 996 flow [2022-12-05 19:21:30,984 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=209, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=996, PETRI_PLACES=224, PETRI_TRANSITIONS=227} [2022-12-05 19:21:30,984 INFO L294 CegarLoopForPetriNet]: 191 programPoint places, 33 predicate places. [2022-12-05 19:21:30,985 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 227 transitions, 996 flow [2022-12-05 19:21:30,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 172.66666666666666) internal successors, (1554), 9 states have internal predecessors, (1554), 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) [2022-12-05 19:21:30,986 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:21:30,986 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:21:30,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-05 19:21:30,986 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 2 more)] === [2022-12-05 19:21:30,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:21:30,987 INFO L85 PathProgramCache]: Analyzing trace with hash -714440724, now seen corresponding path program 4 times [2022-12-05 19:21:30,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:21:30,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687132511] [2022-12-05 19:21:30,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:21:30,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:21:31,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:21:31,620 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:21:31,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:21:31,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687132511] [2022-12-05 19:21:31,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687132511] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:21:31,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:21:31,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 19:21:31,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950425346] [2022-12-05 19:21:31,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:21:31,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 19:21:31,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:21:31,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 19:21:31,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-05 19:21:31,624 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 212 [2022-12-05 19:21:31,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 227 transitions, 996 flow. Second operand has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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) [2022-12-05 19:21:31,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:21:31,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 212 [2022-12-05 19:21:31,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:21:33,760 INFO L130 PetriNetUnfolder]: 6116/13562 cut-off events. [2022-12-05 19:21:33,761 INFO L131 PetriNetUnfolder]: For 18074/18172 co-relation queries the response was YES. [2022-12-05 19:21:33,852 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36047 conditions, 13562 events. 6116/13562 cut-off events. For 18074/18172 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 124493 event pairs, 1169 based on Foata normal form. 148/13044 useless extension candidates. Maximal degree in co-relation 27474. Up to 4131 conditions per place. [2022-12-05 19:21:33,906 INFO L137 encePairwiseOnDemand]: 203/212 looper letters, 106 selfloop transitions, 66 changer transitions 6/334 dead transitions. [2022-12-05 19:21:33,906 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 234 places, 334 transitions, 2032 flow [2022-12-05 19:21:33,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-05 19:21:33,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-12-05 19:21:33,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1992 transitions. [2022-12-05 19:21:33,910 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8542024013722127 [2022-12-05 19:21:33,910 INFO L175 Difference]: Start difference. First operand has 224 places, 227 transitions, 996 flow. Second operand 11 states and 1992 transitions. [2022-12-05 19:21:33,910 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 234 places, 334 transitions, 2032 flow [2022-12-05 19:21:34,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 334 transitions, 1966 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-12-05 19:21:34,210 INFO L231 Difference]: Finished difference. Result has 237 places, 259 transitions, 1524 flow [2022-12-05 19:21:34,210 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=960, PETRI_DIFFERENCE_MINUEND_PLACES=221, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1524, PETRI_PLACES=237, PETRI_TRANSITIONS=259} [2022-12-05 19:21:34,211 INFO L294 CegarLoopForPetriNet]: 191 programPoint places, 46 predicate places. [2022-12-05 19:21:34,211 INFO L495 AbstractCegarLoop]: Abstraction has has 237 places, 259 transitions, 1524 flow [2022-12-05 19:21:34,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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) [2022-12-05 19:21:34,212 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:21:34,212 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:21:34,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-05 19:21:34,213 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 2 more)] === [2022-12-05 19:21:34,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:21:34,213 INFO L85 PathProgramCache]: Analyzing trace with hash -2028748106, now seen corresponding path program 5 times [2022-12-05 19:21:34,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:21:34,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696891120] [2022-12-05 19:21:34,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:21:34,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:21:34,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:21:34,780 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:21:34,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:21:34,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696891120] [2022-12-05 19:21:34,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696891120] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:21:34,784 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:21:34,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 19:21:34,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318512864] [2022-12-05 19:21:34,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:21:34,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 19:21:34,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:21:34,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 19:21:34,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-05 19:21:34,789 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 212 [2022-12-05 19:21:34,790 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 237 places, 259 transitions, 1524 flow. Second operand has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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) [2022-12-05 19:21:34,790 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:21:34,790 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 212 [2022-12-05 19:21:34,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:21:37,340 INFO L130 PetriNetUnfolder]: 7106/14418 cut-off events. [2022-12-05 19:21:37,340 INFO L131 PetriNetUnfolder]: For 27541/27654 co-relation queries the response was YES. [2022-12-05 19:21:37,390 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43412 conditions, 14418 events. 7106/14418 cut-off events. For 27541/27654 co-relation queries the response was YES. Maximal size of possible extension queue 610. Compared 125130 event pairs, 969 based on Foata normal form. 216/14128 useless extension candidates. Maximal degree in co-relation 33798. Up to 4265 conditions per place. [2022-12-05 19:21:37,438 INFO L137 encePairwiseOnDemand]: 198/212 looper letters, 127 selfloop transitions, 84 changer transitions 11/378 dead transitions. [2022-12-05 19:21:37,439 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 378 transitions, 2533 flow [2022-12-05 19:21:37,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-05 19:21:37,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-12-05 19:21:37,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2362 transitions. [2022-12-05 19:21:37,444 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8570391872278664 [2022-12-05 19:21:37,445 INFO L175 Difference]: Start difference. First operand has 237 places, 259 transitions, 1524 flow. Second operand 13 states and 2362 transitions. [2022-12-05 19:21:37,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 378 transitions, 2533 flow [2022-12-05 19:21:37,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 242 places, 378 transitions, 2428 flow, removed 12 selfloop flow, removed 5 redundant places. [2022-12-05 19:21:37,557 INFO L231 Difference]: Finished difference. Result has 248 places, 278 transitions, 1854 flow [2022-12-05 19:21:37,558 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=1330, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1854, PETRI_PLACES=248, PETRI_TRANSITIONS=278} [2022-12-05 19:21:37,559 INFO L294 CegarLoopForPetriNet]: 191 programPoint places, 57 predicate places. [2022-12-05 19:21:37,559 INFO L495 AbstractCegarLoop]: Abstraction has has 248 places, 278 transitions, 1854 flow [2022-12-05 19:21:37,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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) [2022-12-05 19:21:37,560 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:21:37,560 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:21:37,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-05 19:21:37,560 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 2 more)] === [2022-12-05 19:21:37,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:21:37,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1584525254, now seen corresponding path program 6 times [2022-12-05 19:21:37,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:21:37,563 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536742434] [2022-12-05 19:21:37,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:21:37,563 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:21:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:21:38,017 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:21:38,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:21:38,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536742434] [2022-12-05 19:21:38,018 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536742434] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:21:38,018 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:21:38,018 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-05 19:21:38,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536637793] [2022-12-05 19:21:38,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:21:38,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 19:21:38,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:21:38,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 19:21:38,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-12-05 19:21:38,023 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 212 [2022-12-05 19:21:38,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 278 transitions, 1854 flow. Second operand has 7 states, 7 states have (on average 173.42857142857142) internal successors, (1214), 7 states have internal predecessors, (1214), 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) [2022-12-05 19:21:38,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:21:38,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 212 [2022-12-05 19:21:38,025 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:21:40,226 INFO L130 PetriNetUnfolder]: 6816/15650 cut-off events. [2022-12-05 19:21:40,226 INFO L131 PetriNetUnfolder]: For 37909/37971 co-relation queries the response was YES. [2022-12-05 19:21:40,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47581 conditions, 15650 events. 6816/15650 cut-off events. For 37909/37971 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 150032 event pairs, 2075 based on Foata normal form. 94/14879 useless extension candidates. Maximal degree in co-relation 39281. Up to 4543 conditions per place. [2022-12-05 19:21:40,332 INFO L137 encePairwiseOnDemand]: 203/212 looper letters, 114 selfloop transitions, 72 changer transitions 6/348 dead transitions. [2022-12-05 19:21:40,332 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 255 places, 348 transitions, 2563 flow [2022-12-05 19:21:40,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 19:21:40,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 19:21:40,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1641 transitions. [2022-12-05 19:21:40,336 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.860062893081761 [2022-12-05 19:21:40,336 INFO L175 Difference]: Start difference. First operand has 248 places, 278 transitions, 1854 flow. Second operand 9 states and 1641 transitions. [2022-12-05 19:21:40,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 255 places, 348 transitions, 2563 flow [2022-12-05 19:21:40,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 348 transitions, 2470 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-12-05 19:21:40,534 INFO L231 Difference]: Finished difference. Result has 255 places, 283 transitions, 2020 flow [2022-12-05 19:21:40,535 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=1765, PETRI_DIFFERENCE_MINUEND_PLACES=243, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=206, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2020, PETRI_PLACES=255, PETRI_TRANSITIONS=283} [2022-12-05 19:21:40,535 INFO L294 CegarLoopForPetriNet]: 191 programPoint places, 64 predicate places. [2022-12-05 19:21:40,535 INFO L495 AbstractCegarLoop]: Abstraction has has 255 places, 283 transitions, 2020 flow [2022-12-05 19:21:40,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.42857142857142) internal successors, (1214), 7 states have internal predecessors, (1214), 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) [2022-12-05 19:21:40,536 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:21:40,536 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:21:40,536 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-05 19:21:40,536 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 2 more)] === [2022-12-05 19:21:40,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:21:40,537 INFO L85 PathProgramCache]: Analyzing trace with hash 1075292526, now seen corresponding path program 7 times [2022-12-05 19:21:40,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:21:40,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87899429] [2022-12-05 19:21:40,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:21:40,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:21:40,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:21:41,022 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:21:41,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:21:41,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87899429] [2022-12-05 19:21:41,023 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87899429] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:21:41,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463488583] [2022-12-05 19:21:41,023 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-12-05 19:21:41,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:21:41,024 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:21:41,025 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) [2022-12-05 19:21:41,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-05 19:21:41,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:21:41,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-05 19:21:41,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:21:41,707 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:21:41,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 19:21:41,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [463488583] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:21:41,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 19:21:41,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-12-05 19:21:41,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913668291] [2022-12-05 19:21:41,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:21:41,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 19:21:41,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:21:41,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 19:21:41,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2022-12-05 19:21:41,710 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 212 [2022-12-05 19:21:41,711 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 255 places, 283 transitions, 2020 flow. Second operand has 7 states, 7 states have (on average 173.42857142857142) internal successors, (1214), 7 states have internal predecessors, (1214), 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) [2022-12-05 19:21:41,711 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:21:41,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 212 [2022-12-05 19:21:41,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:21:44,207 INFO L130 PetriNetUnfolder]: 7598/15551 cut-off events. [2022-12-05 19:21:44,207 INFO L131 PetriNetUnfolder]: For 42349/42509 co-relation queries the response was YES. [2022-12-05 19:21:44,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52203 conditions, 15551 events. 7598/15551 cut-off events. For 42349/42509 co-relation queries the response was YES. Maximal size of possible extension queue 696. Compared 138900 event pairs, 1554 based on Foata normal form. 180/15122 useless extension candidates. Maximal degree in co-relation 48166. Up to 4693 conditions per place. [2022-12-05 19:21:44,324 INFO L137 encePairwiseOnDemand]: 203/212 looper letters, 153 selfloop transitions, 64 changer transitions 8/378 dead transitions. [2022-12-05 19:21:44,324 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 378 transitions, 2994 flow [2022-12-05 19:21:44,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 19:21:44,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 19:21:44,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1636 transitions. [2022-12-05 19:21:44,328 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8574423480083857 [2022-12-05 19:21:44,328 INFO L175 Difference]: Start difference. First operand has 255 places, 283 transitions, 2020 flow. Second operand 9 states and 1636 transitions. [2022-12-05 19:21:44,328 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 378 transitions, 2994 flow [2022-12-05 19:21:44,526 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 256 places, 378 transitions, 2834 flow, removed 13 selfloop flow, removed 6 redundant places. [2022-12-05 19:21:44,531 INFO L231 Difference]: Finished difference. Result has 259 places, 295 transitions, 2173 flow [2022-12-05 19:21:44,532 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=1829, PETRI_DIFFERENCE_MINUEND_PLACES=248, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=280, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=228, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2173, PETRI_PLACES=259, PETRI_TRANSITIONS=295} [2022-12-05 19:21:44,532 INFO L294 CegarLoopForPetriNet]: 191 programPoint places, 68 predicate places. [2022-12-05 19:21:44,532 INFO L495 AbstractCegarLoop]: Abstraction has has 259 places, 295 transitions, 2173 flow [2022-12-05 19:21:44,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.42857142857142) internal successors, (1214), 7 states have internal predecessors, (1214), 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) [2022-12-05 19:21:44,533 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:21:44,533 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:21:44,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-05 19:21:44,739 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,SelfDestructingSolverStorable11 [2022-12-05 19:21:44,740 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 2 more)] === [2022-12-05 19:21:44,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:21:44,740 INFO L85 PathProgramCache]: Analyzing trace with hash -105854402, now seen corresponding path program 1 times [2022-12-05 19:21:44,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:21:44,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278694351] [2022-12-05 19:21:44,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:21:44,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:21:44,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:21:45,321 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:21:45,321 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:21:45,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278694351] [2022-12-05 19:21:45,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278694351] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:21:45,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581364759] [2022-12-05 19:21:45,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:21:45,321 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:21:45,322 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:21:45,323 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) [2022-12-05 19:21:45,326 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-05 19:21:45,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:21:45,466 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-05 19:21:45,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:21:45,818 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:21:45,818 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:21:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:21:46,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581364759] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:21:46,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:21:46,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 15 [2022-12-05 19:21:46,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723192355] [2022-12-05 19:21:46,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:21:46,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-12-05 19:21:46,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:21:46,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-12-05 19:21:46,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2022-12-05 19:21:46,084 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 212 [2022-12-05 19:21:46,086 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 259 places, 295 transitions, 2173 flow. Second operand has 15 states, 15 states have (on average 173.73333333333332) internal successors, (2606), 15 states have internal predecessors, (2606), 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) [2022-12-05 19:21:46,086 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:21:46,086 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 212 [2022-12-05 19:21:46,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:21:48,891 INFO L130 PetriNetUnfolder]: 7977/15115 cut-off events. [2022-12-05 19:21:48,891 INFO L131 PetriNetUnfolder]: For 47732/47856 co-relation queries the response was YES. [2022-12-05 19:21:48,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54779 conditions, 15115 events. 7977/15115 cut-off events. For 47732/47856 co-relation queries the response was YES. Maximal size of possible extension queue 665. Compared 127363 event pairs, 466 based on Foata normal form. 272/14951 useless extension candidates. Maximal degree in co-relation 54642. Up to 1877 conditions per place. [2022-12-05 19:21:49,001 INFO L137 encePairwiseOnDemand]: 200/212 looper letters, 251 selfloop transitions, 167 changer transitions 0/571 dead transitions. [2022-12-05 19:21:49,002 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 571 transitions, 4733 flow [2022-12-05 19:21:49,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-12-05 19:21:49,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2022-12-05 19:21:49,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 4856 transitions. [2022-12-05 19:21:49,010 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8483577917540182 [2022-12-05 19:21:49,010 INFO L175 Difference]: Start difference. First operand has 259 places, 295 transitions, 2173 flow. Second operand 27 states and 4856 transitions. [2022-12-05 19:21:49,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 571 transitions, 4733 flow [2022-12-05 19:21:49,177 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 571 transitions, 4559 flow, removed 62 selfloop flow, removed 8 redundant places. [2022-12-05 19:21:49,185 INFO L231 Difference]: Finished difference. Result has 287 places, 368 transitions, 3464 flow [2022-12-05 19:21:49,186 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=2043, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=295, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=100, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=189, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3464, PETRI_PLACES=287, PETRI_TRANSITIONS=368} [2022-12-05 19:21:49,186 INFO L294 CegarLoopForPetriNet]: 191 programPoint places, 96 predicate places. [2022-12-05 19:21:49,186 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 368 transitions, 3464 flow [2022-12-05 19:21:49,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 173.73333333333332) internal successors, (2606), 15 states have internal predecessors, (2606), 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) [2022-12-05 19:21:49,187 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:21:49,188 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:21:49,196 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-05 19:21:49,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-12-05 19:21:49,394 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 2 more)] === [2022-12-05 19:21:49,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:21:49,394 INFO L85 PathProgramCache]: Analyzing trace with hash 347410808, now seen corresponding path program 2 times [2022-12-05 19:21:49,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:21:49,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459647443] [2022-12-05 19:21:49,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:21:49,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:21:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:21:49,899 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:21:49,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:21:49,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459647443] [2022-12-05 19:21:49,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459647443] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:21:49,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:21:49,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 19:21:49,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185040088] [2022-12-05 19:21:49,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:21:49,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 19:21:49,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:21:49,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 19:21:49,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-05 19:21:49,904 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 212 [2022-12-05 19:21:49,906 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 368 transitions, 3464 flow. Second operand has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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) [2022-12-05 19:21:49,907 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:21:49,907 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 212 [2022-12-05 19:21:49,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:21:53,044 INFO L130 PetriNetUnfolder]: 8104/18086 cut-off events. [2022-12-05 19:21:53,045 INFO L131 PetriNetUnfolder]: For 97050/97073 co-relation queries the response was YES. [2022-12-05 19:21:53,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69360 conditions, 18086 events. 8104/18086 cut-off events. For 97050/97073 co-relation queries the response was YES. Maximal size of possible extension queue 856. Compared 180936 event pairs, 2934 based on Foata normal form. 202/17287 useless extension candidates. Maximal degree in co-relation 69215. Up to 7458 conditions per place. [2022-12-05 19:21:53,190 INFO L137 encePairwiseOnDemand]: 202/212 looper letters, 162 selfloop transitions, 119 changer transitions 0/434 dead transitions. [2022-12-05 19:21:53,190 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 295 places, 434 transitions, 4531 flow [2022-12-05 19:21:53,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 19:21:53,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 19:21:53,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1630 transitions. [2022-12-05 19:21:53,192 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8542976939203354 [2022-12-05 19:21:53,192 INFO L175 Difference]: Start difference. First operand has 287 places, 368 transitions, 3464 flow. Second operand 9 states and 1630 transitions. [2022-12-05 19:21:53,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 295 places, 434 transitions, 4531 flow [2022-12-05 19:21:53,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 290 places, 434 transitions, 4077 flow, removed 159 selfloop flow, removed 5 redundant places. [2022-12-05 19:21:53,638 INFO L231 Difference]: Finished difference. Result has 292 places, 384 transitions, 3594 flow [2022-12-05 19:21:53,638 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=3100, PETRI_DIFFERENCE_MINUEND_PLACES=282, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=368, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=249, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3594, PETRI_PLACES=292, PETRI_TRANSITIONS=384} [2022-12-05 19:21:53,638 INFO L294 CegarLoopForPetriNet]: 191 programPoint places, 101 predicate places. [2022-12-05 19:21:53,639 INFO L495 AbstractCegarLoop]: Abstraction has has 292 places, 384 transitions, 3594 flow [2022-12-05 19:21:53,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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) [2022-12-05 19:21:53,639 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:21:53,639 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:21:53,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-05 19:21:53,640 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 19:21:53,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:21:53,640 INFO L85 PathProgramCache]: Analyzing trace with hash 1776359486, now seen corresponding path program 3 times [2022-12-05 19:21:53,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:21:53,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360803428] [2022-12-05 19:21:53,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:21:53,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:21:53,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:21:54,063 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:21:54,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:21:54,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360803428] [2022-12-05 19:21:54,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360803428] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:21:54,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110231865] [2022-12-05 19:21:54,064 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-05 19:21:54,064 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:21:54,065 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:21:54,068 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) [2022-12-05 19:21:54,096 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-05 19:21:54,220 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-05 19:21:54,220 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 19:21:54,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 8 conjunts are in the unsatisfiable core [2022-12-05 19:21:54,226 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:21:54,591 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:21:54,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 19:21:54,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110231865] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:21:54,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 19:21:54,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-12-05 19:21:54,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080943228] [2022-12-05 19:21:54,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:21:54,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 19:21:54,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:21:54,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 19:21:54,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-12-05 19:21:54,597 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 212 [2022-12-05 19:21:54,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 292 places, 384 transitions, 3594 flow. Second operand has 7 states, 7 states have (on average 173.42857142857142) internal successors, (1214), 7 states have internal predecessors, (1214), 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) [2022-12-05 19:21:54,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:21:54,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 212 [2022-12-05 19:21:54,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:21:57,398 INFO L130 PetriNetUnfolder]: 9599/18210 cut-off events. [2022-12-05 19:21:57,399 INFO L131 PetriNetUnfolder]: For 85632/85722 co-relation queries the response was YES. [2022-12-05 19:21:57,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73235 conditions, 18210 events. 9599/18210 cut-off events. For 85632/85722 co-relation queries the response was YES. Maximal size of possible extension queue 886. Compared 161601 event pairs, 941 based on Foata normal form. 106/17835 useless extension candidates. Maximal degree in co-relation 73090. Up to 5793 conditions per place. [2022-12-05 19:21:57,558 INFO L137 encePairwiseOnDemand]: 201/212 looper letters, 240 selfloop transitions, 78 changer transitions 6/477 dead transitions. [2022-12-05 19:21:57,559 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 300 places, 477 transitions, 4995 flow [2022-12-05 19:21:57,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 19:21:57,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 19:21:57,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1628 transitions. [2022-12-05 19:21:57,561 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8532494758909853 [2022-12-05 19:21:57,561 INFO L175 Difference]: Start difference. First operand has 292 places, 384 transitions, 3594 flow. Second operand 9 states and 1628 transitions. [2022-12-05 19:21:57,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 300 places, 477 transitions, 4995 flow [2022-12-05 19:21:58,200 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 477 transitions, 4735 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-12-05 19:21:58,205 INFO L231 Difference]: Finished difference. Result has 298 places, 395 transitions, 3796 flow [2022-12-05 19:21:58,206 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=3354, PETRI_DIFFERENCE_MINUEND_PLACES=286, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=384, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=306, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3796, PETRI_PLACES=298, PETRI_TRANSITIONS=395} [2022-12-05 19:21:58,206 INFO L294 CegarLoopForPetriNet]: 191 programPoint places, 107 predicate places. [2022-12-05 19:21:58,206 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 395 transitions, 3796 flow [2022-12-05 19:21:58,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.42857142857142) internal successors, (1214), 7 states have internal predecessors, (1214), 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) [2022-12-05 19:21:58,207 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:21:58,207 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:21:58,215 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-05 19:21:58,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:21:58,413 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 19:21:58,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:21:58,414 INFO L85 PathProgramCache]: Analyzing trace with hash 505177886, now seen corresponding path program 4 times [2022-12-05 19:21:58,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:21:58,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909241037] [2022-12-05 19:21:58,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:21:58,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:21:58,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:21:58,845 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-12-05 19:21:58,845 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:21:58,845 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909241037] [2022-12-05 19:21:58,845 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909241037] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:21:58,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:21:58,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-05 19:21:58,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [830340671] [2022-12-05 19:21:58,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:21:58,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-05 19:21:58,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:21:58,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-05 19:21:58,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-12-05 19:21:58,847 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 212 [2022-12-05 19:21:58,849 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 395 transitions, 3796 flow. Second operand has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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) [2022-12-05 19:21:58,849 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:21:58,849 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 212 [2022-12-05 19:21:58,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:22:02,127 INFO L130 PetriNetUnfolder]: 9554/20954 cut-off events. [2022-12-05 19:22:02,128 INFO L131 PetriNetUnfolder]: For 107834/108026 co-relation queries the response was YES. [2022-12-05 19:22:02,244 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78302 conditions, 20954 events. 9554/20954 cut-off events. For 107834/108026 co-relation queries the response was YES. Maximal size of possible extension queue 996. Compared 212107 event pairs, 3381 based on Foata normal form. 266/19987 useless extension candidates. Maximal degree in co-relation 78152. Up to 7267 conditions per place. [2022-12-05 19:22:02,315 INFO L137 encePairwiseOnDemand]: 202/212 looper letters, 206 selfloop transitions, 129 changer transitions 1/489 dead transitions. [2022-12-05 19:22:02,315 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 307 places, 489 transitions, 5170 flow [2022-12-05 19:22:02,315 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-05 19:22:02,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-12-05 19:22:02,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1817 transitions. [2022-12-05 19:22:02,317 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8570754716981132 [2022-12-05 19:22:02,317 INFO L175 Difference]: Start difference. First operand has 298 places, 395 transitions, 3796 flow. Second operand 10 states and 1817 transitions. [2022-12-05 19:22:02,318 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 307 places, 489 transitions, 5170 flow [2022-12-05 19:22:02,963 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 303 places, 489 transitions, 5124 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-12-05 19:22:02,968 INFO L231 Difference]: Finished difference. Result has 307 places, 410 transitions, 4373 flow [2022-12-05 19:22:02,968 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=3744, PETRI_DIFFERENCE_MINUEND_PLACES=294, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=394, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=113, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4373, PETRI_PLACES=307, PETRI_TRANSITIONS=410} [2022-12-05 19:22:02,968 INFO L294 CegarLoopForPetriNet]: 191 programPoint places, 116 predicate places. [2022-12-05 19:22:02,969 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 410 transitions, 4373 flow [2022-12-05 19:22:02,969 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 173.0) internal successors, (1384), 8 states have internal predecessors, (1384), 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) [2022-12-05 19:22:02,969 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:22:02,969 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:22:02,969 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-05 19:22:02,970 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 19:22:02,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:22:02,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1271164946, now seen corresponding path program 5 times [2022-12-05 19:22:02,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:22:02,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158461293] [2022-12-05 19:22:02,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:22:02,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:22:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:22:03,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:22:03,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:22:03,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158461293] [2022-12-05 19:22:03,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158461293] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:22:03,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1351965604] [2022-12-05 19:22:03,363 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-05 19:22:03,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:22:03,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:22:03,364 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) [2022-12-05 19:22:03,367 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-05 19:22:03,503 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-05 19:22:03,503 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-05 19:22:03,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 449 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-05 19:22:03,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:22:03,867 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-05 19:22:03,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-05 19:22:03,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1351965604] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:22:03,868 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-05 19:22:03,868 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-12-05 19:22:03,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587423965] [2022-12-05 19:22:03,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:22:03,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-05 19:22:03,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:22:03,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-05 19:22:03,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-12-05 19:22:03,870 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 212 [2022-12-05 19:22:03,871 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 410 transitions, 4373 flow. Second operand has 7 states, 7 states have (on average 173.42857142857142) internal successors, (1214), 7 states have internal predecessors, (1214), 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) [2022-12-05 19:22:03,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:22:03,872 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 212 [2022-12-05 19:22:03,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:22:07,590 INFO L130 PetriNetUnfolder]: 11291/22071 cut-off events. [2022-12-05 19:22:07,590 INFO L131 PetriNetUnfolder]: For 118113/118215 co-relation queries the response was YES. [2022-12-05 19:22:07,708 INFO L83 FinitePrefix]: Finished finitePrefix Result has 89648 conditions, 22071 events. 11291/22071 cut-off events. For 118113/118215 co-relation queries the response was YES. Maximal size of possible extension queue 1066. Compared 206223 event pairs, 1734 based on Foata normal form. 76/21113 useless extension candidates. Maximal degree in co-relation 89496. Up to 6226 conditions per place. [2022-12-05 19:22:07,781 INFO L137 encePairwiseOnDemand]: 203/212 looper letters, 228 selfloop transitions, 108 changer transitions 7/495 dead transitions. [2022-12-05 19:22:07,781 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 495 transitions, 5630 flow [2022-12-05 19:22:07,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-05 19:22:07,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-05 19:22:07,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1634 transitions. [2022-12-05 19:22:07,783 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8563941299790356 [2022-12-05 19:22:07,784 INFO L175 Difference]: Start difference. First operand has 307 places, 410 transitions, 4373 flow. Second operand 9 states and 1634 transitions. [2022-12-05 19:22:07,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 495 transitions, 5630 flow [2022-12-05 19:22:08,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 495 transitions, 5527 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-12-05 19:22:08,587 INFO L231 Difference]: Finished difference. Result has 313 places, 419 transitions, 4693 flow [2022-12-05 19:22:08,587 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=4253, PETRI_DIFFERENCE_MINUEND_PLACES=302, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=409, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4693, PETRI_PLACES=313, PETRI_TRANSITIONS=419} [2022-12-05 19:22:08,588 INFO L294 CegarLoopForPetriNet]: 191 programPoint places, 122 predicate places. [2022-12-05 19:22:08,588 INFO L495 AbstractCegarLoop]: Abstraction has has 313 places, 419 transitions, 4693 flow [2022-12-05 19:22:08,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 173.42857142857142) internal successors, (1214), 7 states have internal predecessors, (1214), 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) [2022-12-05 19:22:08,588 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:22:08,589 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:22:08,593 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-05 19:22:08,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-12-05 19:22:08,790 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 19:22:08,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:22:08,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1271774228, now seen corresponding path program 1 times [2022-12-05 19:22:08,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:22:08,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754975482] [2022-12-05 19:22:08,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:22:08,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:22:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:22:09,131 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-05 19:22:09,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:22:09,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754975482] [2022-12-05 19:22:09,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754975482] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-05 19:22:09,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1562051571] [2022-12-05 19:22:09,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:22:09,132 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-05 19:22:09,132 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-05 19:22:09,136 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) [2022-12-05 19:22:09,138 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-05 19:22:09,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:22:09,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-05 19:22:09,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-05 19:22:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 19:22:09,391 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-05 19:22:09,522 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 19:22:09,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1562051571] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-05 19:22:09,522 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-05 19:22:09,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6, 7] total 11 [2022-12-05 19:22:09,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788075340] [2022-12-05 19:22:09,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-05 19:22:09,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-12-05 19:22:09,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:22:09,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-12-05 19:22:09,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-12-05 19:22:09,525 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 212 [2022-12-05 19:22:09,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 313 places, 419 transitions, 4693 flow. Second operand has 11 states, 11 states have (on average 169.72727272727272) internal successors, (1867), 11 states have internal predecessors, (1867), 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) [2022-12-05 19:22:09,526 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:22:09,526 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 212 [2022-12-05 19:22:09,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-05 19:22:21,915 INFO L130 PetriNetUnfolder]: 42201/68217 cut-off events. [2022-12-05 19:22:21,915 INFO L131 PetriNetUnfolder]: For 578719/579483 co-relation queries the response was YES. [2022-12-05 19:22:22,851 INFO L83 FinitePrefix]: Finished finitePrefix Result has 324911 conditions, 68217 events. 42201/68217 cut-off events. For 578719/579483 co-relation queries the response was YES. Maximal size of possible extension queue 3984. Compared 610562 event pairs, 2626 based on Foata normal form. 2285/65195 useless extension candidates. Maximal degree in co-relation 324753. Up to 9692 conditions per place. [2022-12-05 19:22:23,382 INFO L137 encePairwiseOnDemand]: 197/212 looper letters, 571 selfloop transitions, 758 changer transitions 0/1486 dead transitions. [2022-12-05 19:22:23,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 1486 transitions, 22223 flow [2022-12-05 19:22:23,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-05 19:22:23,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-05 19:22:23,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 4074 transitions. [2022-12-05 19:22:23,387 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8355209187858901 [2022-12-05 19:22:23,387 INFO L175 Difference]: Start difference. First operand has 313 places, 419 transitions, 4693 flow. Second operand 23 states and 4074 transitions. [2022-12-05 19:22:23,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 1486 transitions, 22223 flow [2022-12-05 19:22:30,532 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 322 places, 1486 transitions, 20486 flow, removed 335 selfloop flow, removed 10 redundant places. [2022-12-05 19:22:30,546 INFO L231 Difference]: Finished difference. Result has 340 places, 1037 transitions, 16435 flow [2022-12-05 19:22:30,547 INFO L276 CegarLoopForPetriNet]: {PETRI_ALPHABET=212, PETRI_DIFFERENCE_MINUEND_FLOW=4270, PETRI_DIFFERENCE_MINUEND_PLACES=300, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=144, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=221, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=16435, PETRI_PLACES=340, PETRI_TRANSITIONS=1037} [2022-12-05 19:22:30,547 INFO L294 CegarLoopForPetriNet]: 191 programPoint places, 149 predicate places. [2022-12-05 19:22:30,547 INFO L495 AbstractCegarLoop]: Abstraction has has 340 places, 1037 transitions, 16435 flow [2022-12-05 19:22:30,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 169.72727272727272) internal successors, (1867), 11 states have internal predecessors, (1867), 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) [2022-12-05 19:22:30,548 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-05 19:22:30,548 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-05 19:22:30,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-05 19:22:30,748 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,SelfDestructingSolverStorable17 [2022-12-05 19:22:30,749 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-12-05 19:22:30,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-05 19:22:30,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1220109854, now seen corresponding path program 2 times [2022-12-05 19:22:30,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-05 19:22:30,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302363542] [2022-12-05 19:22:30,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-05 19:22:30,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-05 19:22:30,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-05 19:22:30,940 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-12-05 19:22:30,940 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-05 19:22:30,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302363542] [2022-12-05 19:22:30,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1302363542] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-05 19:22:30,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-05 19:22:30,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-05 19:22:30,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52266293] [2022-12-05 19:22:30,942 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-05 19:22:30,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-05 19:22:30,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-05 19:22:30,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-05 19:22:30,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-05 19:22:30,944 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 212 [2022-12-05 19:22:30,945 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 340 places, 1037 transitions, 16435 flow. Second operand has 5 states, 5 states have (on average 174.4) internal successors, (872), 5 states have internal predecessors, (872), 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) [2022-12-05 19:22:30,945 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-05 19:22:30,945 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 212 [2022-12-05 19:22:30,945 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand