/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf --traceabstraction.use.on-demand.petri.net.difference true -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-8d0d62b [2022-12-06 18:13:29,692 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-06 18:13:29,694 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-06 18:13:29,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-06 18:13:29,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-06 18:13:29,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-06 18:13:29,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-06 18:13:29,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-06 18:13:29,759 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-06 18:13:29,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-06 18:13:29,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-06 18:13:29,783 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-06 18:13:29,783 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-06 18:13:29,785 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-06 18:13:29,786 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-06 18:13:29,787 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-06 18:13:29,788 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-06 18:13:29,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-06 18:13:29,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-06 18:13:29,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-06 18:13:29,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-06 18:13:29,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-06 18:13:29,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-06 18:13:29,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-06 18:13:29,805 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-06 18:13:29,806 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-06 18:13:29,806 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-06 18:13:29,808 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-06 18:13:29,808 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-06 18:13:29,809 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-06 18:13:29,809 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-06 18:13:29,810 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-06 18:13:29,811 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-06 18:13:29,812 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-06 18:13:29,813 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-06 18:13:29,813 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-06 18:13:29,813 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-06 18:13:29,814 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-06 18:13:29,814 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-06 18:13:29,815 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-06 18:13:29,815 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-06 18:13:29,819 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf [2022-12-06 18:13:29,858 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-06 18:13:29,858 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-06 18:13:29,859 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-06 18:13:29,859 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-06 18:13:29,860 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-06 18:13:29,861 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-06 18:13:29,861 INFO L138 SettingsManager]: * Use SBE=true [2022-12-06 18:13:29,861 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-06 18:13:29,861 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-06 18:13:29,861 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-06 18:13:29,863 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-06 18:13:29,863 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-06 18:13:29,863 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-06 18:13:29,863 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-06 18:13:29,864 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-06 18:13:29,864 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-06 18:13:29,864 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-06 18:13:29,864 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-06 18:13:29,864 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-06 18:13:29,864 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-06 18:13:29,865 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-06 18:13:29,865 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-06 18:13:29,865 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-06 18:13:29,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 18:13:29,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-06 18:13:29,865 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-06 18:13:29,865 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-06 18:13:29,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-06 18:13:29,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-06 18:13:29,866 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-12-06 18:13:29,866 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-06 18:13:29,866 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true [2022-12-06 18:13:30,349 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-06 18:13:30,385 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-06 18:13:30,387 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-06 18:13:30,388 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-06 18:13:30,388 INFO L275 PluginConnector]: CDTParser initialized [2022-12-06 18:13:30,389 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2022-12-06 18:13:31,826 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-06 18:13:32,043 INFO L351 CDTParser]: Found 1 translation units. [2022-12-06 18:13:32,044 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c [2022-12-06 18:13:32,049 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53991ea2b/3febbdf4ab924883954ceb482c0ce2c8/FLAG6cf5812c3 [2022-12-06 18:13:32,063 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/53991ea2b/3febbdf4ab924883954ceb482c0ce2c8 [2022-12-06 18:13:32,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-06 18:13:32,068 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-06 18:13:32,069 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-06 18:13:32,069 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-06 18:13:32,071 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-06 18:13:32,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:13:32" (1/1) ... [2022-12-06 18:13:32,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e7e2206 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:32, skipping insertion in model container [2022-12-06 18:13:32,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 06:13:32" (1/1) ... [2022-12-06 18:13:32,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-06 18:13:32,092 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-06 18:13:32,206 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:13:32,208 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:13:32,209 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:13:32,213 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:13:32,214 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:13:32,214 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:13:32,218 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:13:32,219 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:13:32,220 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:13:32,220 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:13:32,221 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:13:32,221 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:13:32,222 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:13:32,223 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:13:32,238 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c[2591,2604] [2022-12-06 18:13:32,242 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 18:13:32,256 INFO L203 MainTranslator]: Completed pre-run [2022-12-06 18:13:32,270 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:13:32,272 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:13:32,273 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:13:32,274 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:13:32,274 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:13:32,275 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:13:32,275 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:13:32,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:13:32,276 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:13:32,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:13:32,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:13:32,277 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:13:32,278 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_begin [2022-12-06 18:13:32,279 WARN L623 FunctionHandler]: Unknown extern function __VERIFIER_atomic_end [2022-12-06 18:13:32,286 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-mult-equiv.wvr.c[2591,2604] [2022-12-06 18:13:32,287 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-06 18:13:32,298 INFO L208 MainTranslator]: Completed translation [2022-12-06 18:13:32,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:32 WrapperNode [2022-12-06 18:13:32,298 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-06 18:13:32,299 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-06 18:13:32,299 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-06 18:13:32,300 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-06 18:13:32,305 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:32" (1/1) ... [2022-12-06 18:13:32,311 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:32" (1/1) ... [2022-12-06 18:13:32,326 INFO L138 Inliner]: procedures = 22, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 68 [2022-12-06 18:13:32,326 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-06 18:13:32,327 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-06 18:13:32,327 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-06 18:13:32,327 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-06 18:13:32,334 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:32" (1/1) ... [2022-12-06 18:13:32,334 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:32" (1/1) ... [2022-12-06 18:13:32,336 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:32" (1/1) ... [2022-12-06 18:13:32,336 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:32" (1/1) ... [2022-12-06 18:13:32,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:32" (1/1) ... [2022-12-06 18:13:32,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:32" (1/1) ... [2022-12-06 18:13:32,345 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:32" (1/1) ... [2022-12-06 18:13:32,346 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:32" (1/1) ... [2022-12-06 18:13:32,347 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-06 18:13:32,348 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-06 18:13:32,348 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-06 18:13:32,348 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-06 18:13:32,349 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:32" (1/1) ... [2022-12-06 18:13:32,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-06 18:13:32,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:13:32,380 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-06 18:13:32,400 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-06 18:13:32,417 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-06 18:13:32,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-12-06 18:13:32,417 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-12-06 18:13:32,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-12-06 18:13:32,417 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-12-06 18:13:32,417 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-12-06 18:13:32,418 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-12-06 18:13:32,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-06 18:13:32,418 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-06 18:13:32,418 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-06 18:13:32,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-12-06 18:13:32,418 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-12-06 18:13:32,418 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-06 18:13:32,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-06 18:13:32,418 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-12-06 18:13:32,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-06 18:13:32,419 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-06 18:13:32,506 INFO L236 CfgBuilder]: Building ICFG [2022-12-06 18:13:32,508 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-06 18:13:32,764 INFO L277 CfgBuilder]: Performing block encoding [2022-12-06 18:13:32,829 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-06 18:13:32,829 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2022-12-06 18:13:32,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:13:32 BoogieIcfgContainer [2022-12-06 18:13:32,831 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-06 18:13:32,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-06 18:13:32,836 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-06 18:13:32,848 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-06 18:13:32,848 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 06:13:32" (1/3) ... [2022-12-06 18:13:32,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51db4ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:13:32, skipping insertion in model container [2022-12-06 18:13:32,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 06:13:32" (2/3) ... [2022-12-06 18:13:32,849 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51db4ad5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 06:13:32, skipping insertion in model container [2022-12-06 18:13:32,849 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 06:13:32" (3/3) ... [2022-12-06 18:13:32,850 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-mult-equiv.wvr.c [2022-12-06 18:13:32,867 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-06 18:13:32,868 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-06 18:13:32,869 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-06 18:13:32,977 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-12-06 18:13:33,020 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 92 transitions, 208 flow [2022-12-06 18:13:33,086 INFO L130 PetriNetUnfolder]: 7/89 cut-off events. [2022-12-06 18:13:33,087 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-06 18:13:33,094 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102 conditions, 89 events. 7/89 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/81 useless extension candidates. Maximal degree in co-relation 57. Up to 2 conditions per place. [2022-12-06 18:13:33,094 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 92 transitions, 208 flow [2022-12-06 18:13:33,099 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 82 places, 79 transitions, 176 flow [2022-12-06 18:13:33,112 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-06 18:13:33,121 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;@2a0f50a1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-06 18:13:33,122 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-12-06 18:13:33,166 INFO L130 PetriNetUnfolder]: 7/78 cut-off events. [2022-12-06 18:13:33,167 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-06 18:13:33,167 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:13:33,167 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] [2022-12-06 18:13:33,168 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:13:33,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:13:33,172 INFO L85 PathProgramCache]: Analyzing trace with hash 181303589, now seen corresponding path program 1 times [2022-12-06 18:13:33,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:13:33,183 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749001007] [2022-12-06 18:13:33,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:13:33,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:13:33,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:13:34,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:13:34,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:13:34,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749001007] [2022-12-06 18:13:34,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749001007] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:13:34,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:13:34,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 18:13:34,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618044406] [2022-12-06 18:13:34,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:13:34,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 18:13:34,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:13:34,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 18:13:34,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-06 18:13:34,084 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 71 out of 92 [2022-12-06 18:13:34,089 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 79 transitions, 176 flow. Second operand has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:34,089 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:13:34,090 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 71 of 92 [2022-12-06 18:13:34,091 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:13:34,261 INFO L130 PetriNetUnfolder]: 34/188 cut-off events. [2022-12-06 18:13:34,262 INFO L131 PetriNetUnfolder]: For 44/46 co-relation queries the response was YES. [2022-12-06 18:13:34,263 INFO L83 FinitePrefix]: Finished finitePrefix Result has 290 conditions, 188 events. 34/188 cut-off events. For 44/46 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 473 event pairs, 0 based on Foata normal form. 40/210 useless extension candidates. Maximal degree in co-relation 162. Up to 45 conditions per place. [2022-12-06 18:13:34,266 INFO L137 encePairwiseOnDemand]: 79/92 looper letters, 25 selfloop transitions, 7 changer transitions 7/98 dead transitions. [2022-12-06 18:13:34,266 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 98 transitions, 316 flow [2022-12-06 18:13:34,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-06 18:13:34,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-06 18:13:34,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 620 transitions. [2022-12-06 18:13:34,284 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.842391304347826 [2022-12-06 18:13:34,288 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 7 predicate places. [2022-12-06 18:13:34,288 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 98 transitions, 316 flow [2022-12-06 18:13:34,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:34,289 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:13:34,289 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:13:34,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-06 18:13:34,289 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:13:34,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:13:34,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1512929224, now seen corresponding path program 1 times [2022-12-06 18:13:34,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:13:34,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220355031] [2022-12-06 18:13:34,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:13:34,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:13:34,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:13:34,565 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:13:34,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:13:34,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220355031] [2022-12-06 18:13:34,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220355031] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:13:34,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:13:34,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 18:13:34,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8336440] [2022-12-06 18:13:34,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:13:34,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 18:13:34,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:13:34,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 18:13:34,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-06 18:13:34,574 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 92 [2022-12-06 18:13:34,574 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 98 transitions, 316 flow. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:34,574 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:13:34,574 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 92 [2022-12-06 18:13:34,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:13:34,819 INFO L130 PetriNetUnfolder]: 358/815 cut-off events. [2022-12-06 18:13:34,819 INFO L131 PetriNetUnfolder]: For 373/501 co-relation queries the response was YES. [2022-12-06 18:13:34,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1719 conditions, 815 events. 358/815 cut-off events. For 373/501 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 4205 event pairs, 70 based on Foata normal form. 8/689 useless extension candidates. Maximal degree in co-relation 1494. Up to 359 conditions per place. [2022-12-06 18:13:34,829 INFO L137 encePairwiseOnDemand]: 84/92 looper letters, 53 selfloop transitions, 12 changer transitions 7/129 dead transitions. [2022-12-06 18:13:34,829 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 129 transitions, 542 flow [2022-12-06 18:13:34,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 18:13:34,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 18:13:34,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 455 transitions. [2022-12-06 18:13:34,831 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8242753623188406 [2022-12-06 18:13:34,831 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 12 predicate places. [2022-12-06 18:13:34,831 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 129 transitions, 542 flow [2022-12-06 18:13:34,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:34,832 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:13:34,833 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:13:34,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-06 18:13:34,833 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:13:34,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:13:34,834 INFO L85 PathProgramCache]: Analyzing trace with hash -487889956, now seen corresponding path program 2 times [2022-12-06 18:13:34,834 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:13:34,834 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201640793] [2022-12-06 18:13:34,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:13:34,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:13:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:13:35,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:13:35,134 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:13:35,134 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201640793] [2022-12-06 18:13:35,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201640793] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:13:35,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:13:35,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 18:13:35,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207943342] [2022-12-06 18:13:35,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:13:35,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 18:13:35,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:13:35,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 18:13:35,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-12-06 18:13:35,137 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 92 [2022-12-06 18:13:35,138 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 129 transitions, 542 flow. Second operand has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:35,138 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:13:35,138 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 92 [2022-12-06 18:13:35,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:13:35,376 INFO L130 PetriNetUnfolder]: 380/949 cut-off events. [2022-12-06 18:13:35,376 INFO L131 PetriNetUnfolder]: For 862/2112 co-relation queries the response was YES. [2022-12-06 18:13:35,379 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2561 conditions, 949 events. 380/949 cut-off events. For 862/2112 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 5408 event pairs, 40 based on Foata normal form. 22/843 useless extension candidates. Maximal degree in co-relation 1969. Up to 418 conditions per place. [2022-12-06 18:13:35,384 INFO L137 encePairwiseOnDemand]: 81/92 looper letters, 97 selfloop transitions, 26 changer transitions 8/188 dead transitions. [2022-12-06 18:13:35,385 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 188 transitions, 1128 flow [2022-12-06 18:13:35,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 18:13:35,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 18:13:35,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 530 transitions. [2022-12-06 18:13:35,388 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8229813664596274 [2022-12-06 18:13:35,389 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 18 predicate places. [2022-12-06 18:13:35,389 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 188 transitions, 1128 flow [2022-12-06 18:13:35,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:35,390 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:13:35,390 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:13:35,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-06 18:13:35,390 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:13:35,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:13:35,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1795894636, now seen corresponding path program 3 times [2022-12-06 18:13:35,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:13:35,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919886765] [2022-12-06 18:13:35,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:13:35,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:13:35,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:13:35,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:13:35,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:13:35,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919886765] [2022-12-06 18:13:35,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919886765] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:13:35,789 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:13:35,789 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-06 18:13:35,789 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712733105] [2022-12-06 18:13:35,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:13:35,794 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 18:13:35,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:13:35,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 18:13:35,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-06 18:13:35,796 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 92 [2022-12-06 18:13:35,796 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 188 transitions, 1128 flow. Second operand has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:35,797 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:13:35,797 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 92 [2022-12-06 18:13:35,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:13:36,152 INFO L130 PetriNetUnfolder]: 580/1360 cut-off events. [2022-12-06 18:13:36,152 INFO L131 PetriNetUnfolder]: For 1549/2911 co-relation queries the response was YES. [2022-12-06 18:13:36,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4726 conditions, 1360 events. 580/1360 cut-off events. For 1549/2911 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8331 event pairs, 62 based on Foata normal form. 53/1240 useless extension candidates. Maximal degree in co-relation 4229. Up to 674 conditions per place. [2022-12-06 18:13:36,185 INFO L137 encePairwiseOnDemand]: 80/92 looper letters, 165 selfloop transitions, 48 changer transitions 8/278 dead transitions. [2022-12-06 18:13:36,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 278 transitions, 2249 flow [2022-12-06 18:13:36,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 18:13:36,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 18:13:36,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 686 transitions. [2022-12-06 18:13:36,188 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8285024154589372 [2022-12-06 18:13:36,188 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 26 predicate places. [2022-12-06 18:13:36,188 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 278 transitions, 2249 flow [2022-12-06 18:13:36,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 68.66666666666667) internal successors, (412), 6 states have internal predecessors, (412), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:36,189 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:13:36,189 INFO L213 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-06 18:13:36,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-06 18:13:36,189 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:13:36,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:13:36,190 INFO L85 PathProgramCache]: Analyzing trace with hash 934965192, now seen corresponding path program 4 times [2022-12-06 18:13:36,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:13:36,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76805089] [2022-12-06 18:13:36,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:13:36,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:13:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:13:36,368 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:13:36,368 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:13:36,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76805089] [2022-12-06 18:13:36,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76805089] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:13:36,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:13:36,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 18:13:36,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847106068] [2022-12-06 18:13:36,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:13:36,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 18:13:36,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:13:36,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 18:13:36,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-06 18:13:36,371 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 92 [2022-12-06 18:13:36,371 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 278 transitions, 2249 flow. Second operand has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:36,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:13:36,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 92 [2022-12-06 18:13:36,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:13:36,600 INFO L130 PetriNetUnfolder]: 598/1379 cut-off events. [2022-12-06 18:13:36,600 INFO L131 PetriNetUnfolder]: For 2386/5997 co-relation queries the response was YES. [2022-12-06 18:13:36,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5738 conditions, 1379 events. 598/1379 cut-off events. For 2386/5997 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 8367 event pairs, 43 based on Foata normal form. 45/1247 useless extension candidates. Maximal degree in co-relation 4854. Up to 698 conditions per place. [2022-12-06 18:13:36,614 INFO L137 encePairwiseOnDemand]: 85/92 looper letters, 202 selfloop transitions, 47 changer transitions 7/309 dead transitions. [2022-12-06 18:13:36,614 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 309 transitions, 2999 flow [2022-12-06 18:13:36,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 18:13:36,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 18:13:36,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 456 transitions. [2022-12-06 18:13:36,616 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8260869565217391 [2022-12-06 18:13:36,618 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 30 predicate places. [2022-12-06 18:13:36,618 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 309 transitions, 2999 flow [2022-12-06 18:13:36,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.2) internal successors, (346), 5 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:36,619 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:13:36,619 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] [2022-12-06 18:13:36,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-06 18:13:36,619 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:13:36,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:13:36,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1522518164, now seen corresponding path program 1 times [2022-12-06 18:13:36,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:13:36,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765231436] [2022-12-06 18:13:36,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:13:36,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:13:36,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:13:36,928 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:13:36,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:13:36,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765231436] [2022-12-06 18:13:36,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765231436] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:13:36,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750969833] [2022-12-06 18:13:36,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:13:36,929 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:13:36,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:13:36,932 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:13:36,936 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-06 18:13:37,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:13:37,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-06 18:13:37,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:13:37,505 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:13:37,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:13:37,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:13:37,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750969833] provided 1 perfect and 1 imperfect interpolant sequences [2022-12-06 18:13:37,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-12-06 18:13:37,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6, 6] total 13 [2022-12-06 18:13:37,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829206360] [2022-12-06 18:13:37,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:13:37,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-06 18:13:37,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:13:37,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-06 18:13:37,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2022-12-06 18:13:37,804 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 92 [2022-12-06 18:13:37,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 309 transitions, 2999 flow. Second operand has 7 states, 7 states have (on average 66.57142857142857) internal successors, (466), 7 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:37,804 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:13:37,804 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 92 [2022-12-06 18:13:37,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:13:38,638 INFO L130 PetriNetUnfolder]: 1724/3715 cut-off events. [2022-12-06 18:13:38,639 INFO L131 PetriNetUnfolder]: For 12165/28592 co-relation queries the response was YES. [2022-12-06 18:13:38,647 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16867 conditions, 3715 events. 1724/3715 cut-off events. For 12165/28592 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 27982 event pairs, 54 based on Foata normal form. 188/3347 useless extension candidates. Maximal degree in co-relation 13969. Up to 1697 conditions per place. [2022-12-06 18:13:38,677 INFO L137 encePairwiseOnDemand]: 75/92 looper letters, 419 selfloop transitions, 293 changer transitions 7/770 dead transitions. [2022-12-06 18:13:38,677 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 770 transitions, 9576 flow [2022-12-06 18:13:38,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-06 18:13:38,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2022-12-06 18:13:38,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 1119 transitions. [2022-12-06 18:13:38,680 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8108695652173913 [2022-12-06 18:13:38,680 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 44 predicate places. [2022-12-06 18:13:38,681 INFO L495 AbstractCegarLoop]: Abstraction has has 126 places, 770 transitions, 9576 flow [2022-12-06 18:13:38,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 66.57142857142857) internal successors, (466), 7 states have internal predecessors, (466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:38,681 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:13:38,681 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] [2022-12-06 18:13:38,690 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-12-06 18:13:38,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-06 18:13:38,888 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:13:38,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:13:38,888 INFO L85 PathProgramCache]: Analyzing trace with hash 2000126702, now seen corresponding path program 2 times [2022-12-06 18:13:38,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:13:38,889 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473322321] [2022-12-06 18:13:38,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:13:38,889 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:13:38,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:13:39,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:13:39,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:13:39,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473322321] [2022-12-06 18:13:39,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473322321] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:13:39,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927703621] [2022-12-06 18:13:39,122 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 18:13:39,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:13:39,123 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:13:39,124 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:13:39,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-06 18:13:39,217 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 18:13:39,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:13:39,219 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-06 18:13:39,221 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:13:39,566 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:13:39,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:13:39,956 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:13:39,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927703621] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:13:39,956 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:13:39,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8, 8] total 16 [2022-12-06 18:13:39,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054458307] [2022-12-06 18:13:39,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:13:39,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-06 18:13:39,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:13:39,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-06 18:13:39,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-12-06 18:13:39,959 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 92 [2022-12-06 18:13:39,960 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 126 places, 770 transitions, 9576 flow. Second operand has 16 states, 16 states have (on average 62.875) internal successors, (1006), 16 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:39,960 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:13:39,960 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 92 [2022-12-06 18:13:39,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:13:41,999 INFO L130 PetriNetUnfolder]: 2325/5010 cut-off events. [2022-12-06 18:13:42,000 INFO L131 PetriNetUnfolder]: For 19868/30247 co-relation queries the response was YES. [2022-12-06 18:13:42,011 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25875 conditions, 5010 events. 2325/5010 cut-off events. For 19868/30247 co-relation queries the response was YES. Maximal size of possible extension queue 376. Compared 40118 event pairs, 71 based on Foata normal form. 231/4533 useless extension candidates. Maximal degree in co-relation 20793. Up to 2447 conditions per place. [2022-12-06 18:13:42,065 INFO L137 encePairwiseOnDemand]: 78/92 looper letters, 732 selfloop transitions, 234 changer transitions 20/1049 dead transitions. [2022-12-06 18:13:42,065 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 1049 transitions, 15305 flow [2022-12-06 18:13:42,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-12-06 18:13:42,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2022-12-06 18:13:42,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 1252 transitions. [2022-12-06 18:13:42,069 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7162471395881007 [2022-12-06 18:13:42,069 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 62 predicate places. [2022-12-06 18:13:42,071 INFO L495 AbstractCegarLoop]: Abstraction has has 144 places, 1049 transitions, 15305 flow [2022-12-06 18:13:42,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 62.875) internal successors, (1006), 16 states have internal predecessors, (1006), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:42,073 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:13:42,073 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] [2022-12-06 18:13:42,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-12-06 18:13:42,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-12-06 18:13:42,280 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:13:42,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:13:42,280 INFO L85 PathProgramCache]: Analyzing trace with hash 1051924870, now seen corresponding path program 1 times [2022-12-06 18:13:42,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:13:42,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706803043] [2022-12-06 18:13:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:13:42,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:13:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:13:42,736 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:13:42,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:13:42,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706803043] [2022-12-06 18:13:42,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706803043] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:13:42,737 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:13:42,737 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 18:13:42,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [43559457] [2022-12-06 18:13:42,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:13:42,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 18:13:42,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:13:42,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 18:13:42,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-06 18:13:42,738 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 92 [2022-12-06 18:13:42,739 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 144 places, 1049 transitions, 15305 flow. Second operand has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:42,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:13:42,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 92 [2022-12-06 18:13:42,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:13:44,876 INFO L130 PetriNetUnfolder]: 3415/7631 cut-off events. [2022-12-06 18:13:44,876 INFO L131 PetriNetUnfolder]: For 36894/69689 co-relation queries the response was YES. [2022-12-06 18:13:44,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43640 conditions, 7631 events. 3415/7631 cut-off events. For 36894/69689 co-relation queries the response was YES. Maximal size of possible extension queue 554. Compared 67603 event pairs, 45 based on Foata normal form. 211/6751 useless extension candidates. Maximal degree in co-relation 33823. Up to 3756 conditions per place. [2022-12-06 18:13:44,998 INFO L137 encePairwiseOnDemand]: 84/92 looper letters, 1065 selfloop transitions, 527 changer transitions 50/1792 dead transitions. [2022-12-06 18:13:44,998 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 148 places, 1792 transitions, 30382 flow [2022-12-06 18:13:44,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 18:13:44,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 18:13:45,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 389 transitions. [2022-12-06 18:13:45,000 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8456521739130435 [2022-12-06 18:13:45,002 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 66 predicate places. [2022-12-06 18:13:45,002 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 1792 transitions, 30382 flow [2022-12-06 18:13:45,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:45,003 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:13:45,003 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] [2022-12-06 18:13:45,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-06 18:13:45,003 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:13:45,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:13:45,004 INFO L85 PathProgramCache]: Analyzing trace with hash 775520662, now seen corresponding path program 2 times [2022-12-06 18:13:45,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:13:45,004 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260037506] [2022-12-06 18:13:45,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:13:45,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:13:45,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:13:45,372 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:13:45,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:13:45,372 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260037506] [2022-12-06 18:13:45,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260037506] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:13:45,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:13:45,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 18:13:45,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [551750569] [2022-12-06 18:13:45,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:13:45,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 18:13:45,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:13:45,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 18:13:45,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-06 18:13:45,374 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 92 [2022-12-06 18:13:45,375 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 1792 transitions, 30382 flow. Second operand has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:45,375 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:13:45,375 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 92 [2022-12-06 18:13:45,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:13:48,175 INFO L130 PetriNetUnfolder]: 4002/9391 cut-off events. [2022-12-06 18:13:48,175 INFO L131 PetriNetUnfolder]: For 59314/125234 co-relation queries the response was YES. [2022-12-06 18:13:48,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58322 conditions, 9391 events. 4002/9391 cut-off events. For 59314/125234 co-relation queries the response was YES. Maximal size of possible extension queue 637. Compared 88932 event pairs, 84 based on Foata normal form. 558/8654 useless extension candidates. Maximal degree in co-relation 42921. Up to 4612 conditions per place. [2022-12-06 18:13:48,274 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 1422 selfloop transitions, 576 changer transitions 86/2231 dead transitions. [2022-12-06 18:13:48,274 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 2231 transitions, 42347 flow [2022-12-06 18:13:48,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 18:13:48,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 18:13:48,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 456 transitions. [2022-12-06 18:13:48,276 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8260869565217391 [2022-12-06 18:13:48,277 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 71 predicate places. [2022-12-06 18:13:48,277 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 2231 transitions, 42347 flow [2022-12-06 18:13:48,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:48,278 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:13:48,278 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] [2022-12-06 18:13:48,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-06 18:13:48,278 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:13:48,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:13:48,280 INFO L85 PathProgramCache]: Analyzing trace with hash 954986418, now seen corresponding path program 3 times [2022-12-06 18:13:48,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:13:48,281 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613039320] [2022-12-06 18:13:48,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:13:48,281 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:13:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:13:48,514 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:13:48,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:13:48,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1613039320] [2022-12-06 18:13:48,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1613039320] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:13:48,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:13:48,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 18:13:48,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206519060] [2022-12-06 18:13:48,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:13:48,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 18:13:48,516 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:13:48,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 18:13:48,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-06 18:13:48,517 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 92 [2022-12-06 18:13:48,517 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 2231 transitions, 42347 flow. Second operand has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:48,517 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:13:48,518 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 92 [2022-12-06 18:13:48,518 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:13:51,932 INFO L130 PetriNetUnfolder]: 4026/9412 cut-off events. [2022-12-06 18:13:51,933 INFO L131 PetriNetUnfolder]: For 72882/206503 co-relation queries the response was YES. [2022-12-06 18:13:51,979 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64509 conditions, 9412 events. 4026/9412 cut-off events. For 72882/206503 co-relation queries the response was YES. Maximal size of possible extension queue 629. Compared 88935 event pairs, 77 based on Foata normal form. 1008/9142 useless extension candidates. Maximal degree in co-relation 47282. Up to 4666 conditions per place. [2022-12-06 18:13:52,052 INFO L137 encePairwiseOnDemand]: 83/92 looper letters, 1417 selfloop transitions, 744 changer transitions 86/2394 dead transitions. [2022-12-06 18:13:52,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 158 places, 2394 transitions, 49885 flow [2022-12-06 18:13:52,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 18:13:52,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 18:13:52,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 467 transitions. [2022-12-06 18:13:52,054 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8460144927536232 [2022-12-06 18:13:52,054 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 76 predicate places. [2022-12-06 18:13:52,054 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 2394 transitions, 49885 flow [2022-12-06 18:13:52,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:52,055 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:13:52,055 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] [2022-12-06 18:13:52,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-06 18:13:52,055 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:13:52,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:13:52,057 INFO L85 PathProgramCache]: Analyzing trace with hash -52164530, now seen corresponding path program 4 times [2022-12-06 18:13:52,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:13:52,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320949337] [2022-12-06 18:13:52,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:13:52,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:13:52,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:13:52,312 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:13:52,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:13:52,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320949337] [2022-12-06 18:13:52,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320949337] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:13:52,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:13:52,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 18:13:52,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673465360] [2022-12-06 18:13:52,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:13:52,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 18:13:52,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:13:52,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 18:13:52,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-06 18:13:52,314 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 92 [2022-12-06 18:13:52,315 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 2394 transitions, 49885 flow. Second operand has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:52,315 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:13:52,315 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 92 [2022-12-06 18:13:52,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:13:54,881 INFO L130 PetriNetUnfolder]: 4042/9586 cut-off events. [2022-12-06 18:13:54,882 INFO L131 PetriNetUnfolder]: For 90249/166168 co-relation queries the response was YES. [2022-12-06 18:13:54,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71436 conditions, 9586 events. 4042/9586 cut-off events. For 90249/166168 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 91280 event pairs, 73 based on Foata normal form. 963/9285 useless extension candidates. Maximal degree in co-relation 53071. Up to 4796 conditions per place. [2022-12-06 18:13:54,990 INFO L137 encePairwiseOnDemand]: 83/92 looper letters, 1692 selfloop transitions, 715 changer transitions 104/2657 dead transitions. [2022-12-06 18:13:54,990 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 2657 transitions, 60628 flow [2022-12-06 18:13:54,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 18:13:54,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 18:13:54,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 463 transitions. [2022-12-06 18:13:54,992 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8387681159420289 [2022-12-06 18:13:54,993 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 81 predicate places. [2022-12-06 18:13:54,993 INFO L495 AbstractCegarLoop]: Abstraction has has 163 places, 2657 transitions, 60628 flow [2022-12-06 18:13:54,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:54,993 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:13:54,993 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] [2022-12-06 18:13:54,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-06 18:13:54,994 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:13:54,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:13:54,994 INFO L85 PathProgramCache]: Analyzing trace with hash -555723360, now seen corresponding path program 5 times [2022-12-06 18:13:54,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:13:54,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937301901] [2022-12-06 18:13:54,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:13:54,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:13:55,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:13:55,261 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:13:55,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:13:55,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937301901] [2022-12-06 18:13:55,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937301901] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:13:55,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [575335376] [2022-12-06 18:13:55,261 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-12-06 18:13:55,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:13:55,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:13:55,263 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:13:55,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-06 18:13:55,432 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 18:13:55,432 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:13:55,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-06 18:13:55,435 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:13:55,737 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:13:55,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-06 18:13:55,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [575335376] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:13:55,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-06 18:13:55,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-12-06 18:13:55,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295389673] [2022-12-06 18:13:55,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:13:55,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 18:13:55,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:13:55,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 18:13:55,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-06 18:13:55,739 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 92 [2022-12-06 18:13:55,740 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 2657 transitions, 60628 flow. Second operand has 6 states, 6 states have (on average 67.0) internal successors, (402), 6 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:55,740 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:13:55,740 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 92 [2022-12-06 18:13:55,740 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:13:58,858 INFO L130 PetriNetUnfolder]: 4129/9801 cut-off events. [2022-12-06 18:13:58,858 INFO L131 PetriNetUnfolder]: For 100725/230003 co-relation queries the response was YES. [2022-12-06 18:13:58,922 INFO L83 FinitePrefix]: Finished finitePrefix Result has 80047 conditions, 9801 events. 4129/9801 cut-off events. For 100725/230003 co-relation queries the response was YES. Maximal size of possible extension queue 651. Compared 93857 event pairs, 66 based on Foata normal form. 972/9497 useless extension candidates. Maximal degree in co-relation 59886. Up to 6481 conditions per place. [2022-12-06 18:13:59,075 INFO L137 encePairwiseOnDemand]: 79/92 looper letters, 2450 selfloop transitions, 147 changer transitions 118/2770 dead transitions. [2022-12-06 18:13:59,083 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 2770 transitions, 68232 flow [2022-12-06 18:13:59,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-06 18:13:59,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-12-06 18:13:59,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 604 transitions. [2022-12-06 18:13:59,097 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8206521739130435 [2022-12-06 18:13:59,098 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 88 predicate places. [2022-12-06 18:13:59,098 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 2770 transitions, 68232 flow [2022-12-06 18:13:59,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.0) internal successors, (402), 6 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:13:59,098 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:13:59,099 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] [2022-12-06 18:13:59,129 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-06 18:13:59,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:13:59,299 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:13:59,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:13:59,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1195056672, now seen corresponding path program 6 times [2022-12-06 18:13:59,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:13:59,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804502478] [2022-12-06 18:13:59,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:13:59,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:13:59,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:14:00,184 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:14:00,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:14:00,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804502478] [2022-12-06 18:14:00,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804502478] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:14:00,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1101939296] [2022-12-06 18:14:00,185 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-12-06 18:14:00,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:14:00,185 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:14:00,187 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:14:00,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-06 18:14:00,279 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-12-06 18:14:00,279 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:14:00,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-06 18:14:00,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:14:00,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:14:00,433 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-06 18:14:00,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1101939296] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:14:00,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-06 18:14:00,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-12-06 18:14:00,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223512133] [2022-12-06 18:14:00,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:14:00,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 18:14:00,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:14:00,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 18:14:00,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-12-06 18:14:00,437 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 92 [2022-12-06 18:14:00,438 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 2770 transitions, 68232 flow. Second operand has 6 states, 6 states have (on average 67.0) internal successors, (402), 6 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:14:00,438 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:14:00,438 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 92 [2022-12-06 18:14:00,438 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:14:05,848 INFO L130 PetriNetUnfolder]: 4346/10124 cut-off events. [2022-12-06 18:14:05,848 INFO L131 PetriNetUnfolder]: For 113799/290852 co-relation queries the response was YES. [2022-12-06 18:14:05,876 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90828 conditions, 10124 events. 4346/10124 cut-off events. For 113799/290852 co-relation queries the response was YES. Maximal size of possible extension queue 673. Compared 96449 event pairs, 71 based on Foata normal form. 1225/10050 useless extension candidates. Maximal degree in co-relation 69332. Up to 6828 conditions per place. [2022-12-06 18:14:05,975 INFO L137 encePairwiseOnDemand]: 81/92 looper letters, 2495 selfloop transitions, 183 changer transitions 124/2857 dead transitions. [2022-12-06 18:14:05,975 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 177 places, 2857 transitions, 75866 flow [2022-12-06 18:14:05,975 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-06 18:14:05,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-12-06 18:14:05,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 671 transitions. [2022-12-06 18:14:05,980 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8103864734299517 [2022-12-06 18:14:05,982 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 95 predicate places. [2022-12-06 18:14:05,982 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 2857 transitions, 75866 flow [2022-12-06 18:14:05,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.0) internal successors, (402), 6 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:14:05,986 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:14:05,986 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] [2022-12-06 18:14:05,996 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-06 18:14:06,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:14:06,195 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:14:06,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:14:06,196 INFO L85 PathProgramCache]: Analyzing trace with hash 167710168, now seen corresponding path program 7 times [2022-12-06 18:14:06,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:14:06,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [926334245] [2022-12-06 18:14:06,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:14:06,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:14:06,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:14:06,480 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:14:06,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:14:06,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [926334245] [2022-12-06 18:14:06,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [926334245] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:14:06,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:14:06,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 18:14:06,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376650729] [2022-12-06 18:14:06,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:14:06,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 18:14:06,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:14:06,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 18:14:06,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 18:14:06,483 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 92 [2022-12-06 18:14:06,484 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 2857 transitions, 75866 flow. Second operand has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:14:06,484 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:14:06,484 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 92 [2022-12-06 18:14:06,484 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:14:11,486 INFO L130 PetriNetUnfolder]: 4575/10471 cut-off events. [2022-12-06 18:14:11,486 INFO L131 PetriNetUnfolder]: For 138016/328729 co-relation queries the response was YES. [2022-12-06 18:14:11,513 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101940 conditions, 10471 events. 4575/10471 cut-off events. For 138016/328729 co-relation queries the response was YES. Maximal size of possible extension queue 702. Compared 99631 event pairs, 71 based on Foata normal form. 824/9985 useless extension candidates. Maximal degree in co-relation 94827. Up to 7173 conditions per place. [2022-12-06 18:14:11,602 INFO L137 encePairwiseOnDemand]: 84/92 looper letters, 2013 selfloop transitions, 832 changer transitions 124/3122 dead transitions. [2022-12-06 18:14:11,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 182 places, 3122 transitions, 89097 flow [2022-12-06 18:14:11,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 18:14:11,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 18:14:11,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 461 transitions. [2022-12-06 18:14:11,622 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8351449275362319 [2022-12-06 18:14:11,622 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 100 predicate places. [2022-12-06 18:14:11,623 INFO L495 AbstractCegarLoop]: Abstraction has has 182 places, 3122 transitions, 89097 flow [2022-12-06 18:14:11,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:14:11,624 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:14:11,624 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] [2022-12-06 18:14:11,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-06 18:14:11,626 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:14:11,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:14:11,626 INFO L85 PathProgramCache]: Analyzing trace with hash -485665824, now seen corresponding path program 8 times [2022-12-06 18:14:11,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:14:11,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766860920] [2022-12-06 18:14:11,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:14:11,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:14:11,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:14:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:14:11,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:14:11,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766860920] [2022-12-06 18:14:11,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766860920] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:14:11,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:14:11,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 18:14:11,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233253518] [2022-12-06 18:14:11,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:14:11,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 18:14:11,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:14:11,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 18:14:11,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-06 18:14:11,981 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 92 [2022-12-06 18:14:11,981 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 3122 transitions, 89097 flow. Second operand has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:14:11,981 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:14:11,981 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 92 [2022-12-06 18:14:11,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:14:17,322 INFO L130 PetriNetUnfolder]: 4411/9908 cut-off events. [2022-12-06 18:14:17,322 INFO L131 PetriNetUnfolder]: For 148747/318123 co-relation queries the response was YES. [2022-12-06 18:14:17,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 103245 conditions, 9908 events. 4411/9908 cut-off events. For 148747/318123 co-relation queries the response was YES. Maximal size of possible extension queue 680. Compared 91547 event pairs, 65 based on Foata normal form. 784/9414 useless extension candidates. Maximal degree in co-relation 82486. Up to 6841 conditions per place. [2022-12-06 18:14:17,426 INFO L137 encePairwiseOnDemand]: 83/92 looper letters, 1885 selfloop transitions, 834 changer transitions 110/2981 dead transitions. [2022-12-06 18:14:17,426 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 2981 transitions, 90389 flow [2022-12-06 18:14:17,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-06 18:14:17,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-12-06 18:14:17,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 390 transitions. [2022-12-06 18:14:17,427 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8478260869565217 [2022-12-06 18:14:17,427 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 104 predicate places. [2022-12-06 18:14:17,427 INFO L495 AbstractCegarLoop]: Abstraction has has 186 places, 2981 transitions, 90389 flow [2022-12-06 18:14:17,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 71.0) internal successors, (355), 5 states have internal predecessors, (355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:14:17,428 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:14:17,428 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] [2022-12-06 18:14:17,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-06 18:14:17,428 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:14:17,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:14:17,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1235746474, now seen corresponding path program 9 times [2022-12-06 18:14:17,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:14:17,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1588257878] [2022-12-06 18:14:17,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:14:17,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:14:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:14:17,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:14:17,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:14:17,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1588257878] [2022-12-06 18:14:17,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1588257878] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:14:17,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [246199589] [2022-12-06 18:14:17,669 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 18:14:17,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:14:17,669 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:14:17,670 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:14:17,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-06 18:14:17,748 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-12-06 18:14:17,748 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:14:17,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-06 18:14:17,750 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:14:17,846 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:14:17,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-06 18:14:17,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [246199589] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:14:17,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-06 18:14:17,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-12-06 18:14:17,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072898800] [2022-12-06 18:14:17,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:14:17,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-06 18:14:17,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:14:17,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-06 18:14:17,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-12-06 18:14:17,848 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 92 [2022-12-06 18:14:17,848 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 2981 transitions, 90389 flow. Second operand has 6 states, 6 states have (on average 67.0) internal successors, (402), 6 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:14:17,848 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:14:17,848 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 92 [2022-12-06 18:14:17,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:14:23,845 INFO L130 PetriNetUnfolder]: 4645/10269 cut-off events. [2022-12-06 18:14:23,846 INFO L131 PetriNetUnfolder]: For 175301/739225 co-relation queries the response was YES. [2022-12-06 18:14:23,872 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115904 conditions, 10269 events. 4645/10269 cut-off events. For 175301/739225 co-relation queries the response was YES. Maximal size of possible extension queue 712. Compared 94860 event pairs, 58 based on Foata normal form. 888/9855 useless extension candidates. Maximal degree in co-relation 108871. Up to 7201 conditions per place. [2022-12-06 18:14:23,995 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 2771 selfloop transitions, 161 changer transitions 116/3103 dead transitions. [2022-12-06 18:14:23,995 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 3103 transitions, 99999 flow [2022-12-06 18:14:23,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-06 18:14:23,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-12-06 18:14:23,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 522 transitions. [2022-12-06 18:14:23,997 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8105590062111802 [2022-12-06 18:14:23,998 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 110 predicate places. [2022-12-06 18:14:23,998 INFO L495 AbstractCegarLoop]: Abstraction has has 192 places, 3103 transitions, 99999 flow [2022-12-06 18:14:23,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 67.0) internal successors, (402), 6 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:14:23,998 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:14:24,004 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] [2022-12-06 18:14:24,013 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-12-06 18:14:24,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-12-06 18:14:24,211 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:14:24,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:14:24,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1344344652, now seen corresponding path program 10 times [2022-12-06 18:14:24,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:14:24,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509810223] [2022-12-06 18:14:24,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:14:24,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:14:24,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:14:24,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:14:24,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:14:24,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509810223] [2022-12-06 18:14:24,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509810223] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:14:24,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:14:24,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 18:14:24,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90722964] [2022-12-06 18:14:24,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:14:24,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 18:14:24,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:14:24,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 18:14:24,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-12-06 18:14:24,544 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 92 [2022-12-06 18:14:24,545 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 192 places, 3103 transitions, 99999 flow. Second operand has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:14:24,545 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:14:24,545 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 92 [2022-12-06 18:14:24,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:14:32,003 INFO L130 PetriNetUnfolder]: 4833/10972 cut-off events. [2022-12-06 18:14:32,004 INFO L131 PetriNetUnfolder]: For 208999/382432 co-relation queries the response was YES. [2022-12-06 18:14:32,031 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129551 conditions, 10972 events. 4833/10972 cut-off events. For 208999/382432 co-relation queries the response was YES. Maximal size of possible extension queue 767. Compared 104340 event pairs, 67 based on Foata normal form. 948/10554 useless extension candidates. Maximal degree in co-relation 104362. Up to 7594 conditions per place. [2022-12-06 18:14:32,145 INFO L137 encePairwiseOnDemand]: 84/92 looper letters, 2622 selfloop transitions, 121 changer transitions 133/3388 dead transitions. [2022-12-06 18:14:32,146 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 3388 transitions, 114835 flow [2022-12-06 18:14:32,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 18:14:32,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 18:14:32,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 457 transitions. [2022-12-06 18:14:32,147 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8278985507246377 [2022-12-06 18:14:32,147 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 115 predicate places. [2022-12-06 18:14:32,148 INFO L495 AbstractCegarLoop]: Abstraction has has 197 places, 3388 transitions, 114835 flow [2022-12-06 18:14:32,148 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:14:32,148 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:14:32,148 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] [2022-12-06 18:14:32,148 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-06 18:14:32,148 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:14:32,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:14:32,149 INFO L85 PathProgramCache]: Analyzing trace with hash -1168206854, now seen corresponding path program 11 times [2022-12-06 18:14:32,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:14:32,149 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847699622] [2022-12-06 18:14:32,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:14:32,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:14:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:14:32,370 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:14:32,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:14:32,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847699622] [2022-12-06 18:14:32,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847699622] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-06 18:14:32,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-06 18:14:32,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-06 18:14:32,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143570585] [2022-12-06 18:14:32,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-06 18:14:32,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-06 18:14:32,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:14:32,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-06 18:14:32,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-06 18:14:32,372 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 92 [2022-12-06 18:14:32,372 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 3388 transitions, 114835 flow. Second operand has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:14:32,372 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:14:32,372 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 92 [2022-12-06 18:14:32,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:14:40,454 INFO L130 PetriNetUnfolder]: 4793/10760 cut-off events. [2022-12-06 18:14:40,454 INFO L131 PetriNetUnfolder]: For 302900/1047243 co-relation queries the response was YES. [2022-12-06 18:14:40,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 134471 conditions, 10760 events. 4793/10760 cut-off events. For 302900/1047243 co-relation queries the response was YES. Maximal size of possible extension queue 750. Compared 101150 event pairs, 65 based on Foata normal form. 544/9970 useless extension candidates. Maximal degree in co-relation 108911. Up to 7468 conditions per place. [2022-12-06 18:14:40,691 INFO L137 encePairwiseOnDemand]: 84/92 looper letters, 2589 selfloop transitions, 100 changer transitions 154/3345 dead transitions. [2022-12-06 18:14:40,691 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 3345 transitions, 118865 flow [2022-12-06 18:14:40,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-06 18:14:40,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-12-06 18:14:40,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 442 transitions. [2022-12-06 18:14:40,692 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.8007246376811594 [2022-12-06 18:14:40,693 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 120 predicate places. [2022-12-06 18:14:40,693 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 3345 transitions, 118865 flow [2022-12-06 18:14:40,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 69.4) internal successors, (347), 5 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:14:40,693 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:14:40,693 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] [2022-12-06 18:14:40,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-06 18:14:40,694 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:14:40,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:14:40,694 INFO L85 PathProgramCache]: Analyzing trace with hash 2043485279, now seen corresponding path program 1 times [2022-12-06 18:14:40,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:14:40,695 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46215895] [2022-12-06 18:14:40,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:14:40,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:14:40,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:14:41,112 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:14:41,113 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:14:41,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46215895] [2022-12-06 18:14:41,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46215895] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:14:41,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903226283] [2022-12-06 18:14:41,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:14:41,114 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:14:41,115 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:14:41,129 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:14:41,196 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-06 18:14:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:14:41,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-06 18:14:41,297 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:14:41,727 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:14:41,728 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:14:42,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:14:42,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903226283] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:14:42,091 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:14:42,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 17 [2022-12-06 18:14:42,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432361674] [2022-12-06 18:14:42,092 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:14:42,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-12-06 18:14:42,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:14:42,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-12-06 18:14:42,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=218, Unknown=0, NotChecked=0, Total=272 [2022-12-06 18:14:42,094 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 92 [2022-12-06 18:14:42,096 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 3345 transitions, 118865 flow. Second operand has 17 states, 17 states have (on average 62.23529411764706) internal successors, (1058), 17 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:14:42,096 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:14:42,096 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 92 [2022-12-06 18:14:42,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:14:55,444 INFO L130 PetriNetUnfolder]: 6195/14756 cut-off events. [2022-12-06 18:14:55,445 INFO L131 PetriNetUnfolder]: For 382193/837556 co-relation queries the response was YES. [2022-12-06 18:14:55,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188869 conditions, 14756 events. 6195/14756 cut-off events. For 382193/837556 co-relation queries the response was YES. Maximal size of possible extension queue 1027. Compared 151839 event pairs, 74 based on Foata normal form. 981/13916 useless extension candidates. Maximal degree in co-relation 147716. Up to 10127 conditions per place. [2022-12-06 18:14:55,644 INFO L137 encePairwiseOnDemand]: 78/92 looper letters, 2619 selfloop transitions, 908 changer transitions 219/4367 dead transitions. [2022-12-06 18:14:55,644 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 4367 transitions, 164613 flow [2022-12-06 18:14:55,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-12-06 18:14:55,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2022-12-06 18:14:55,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 1305 transitions. [2022-12-06 18:14:55,646 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7092391304347826 [2022-12-06 18:14:55,647 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 139 predicate places. [2022-12-06 18:14:55,647 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 4367 transitions, 164613 flow [2022-12-06 18:14:55,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 62.23529411764706) internal successors, (1058), 17 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:14:55,649 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:14:55,649 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] [2022-12-06 18:14:55,659 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-12-06 18:14:55,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:14:55,856 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:14:55,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:14:55,857 INFO L85 PathProgramCache]: Analyzing trace with hash -544102825, now seen corresponding path program 2 times [2022-12-06 18:14:55,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:14:55,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233513417] [2022-12-06 18:14:55,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:14:55,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:14:55,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:14:56,743 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:14:56,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:14:56,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233513417] [2022-12-06 18:14:56,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233513417] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:14:56,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1978572114] [2022-12-06 18:14:56,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 18:14:56,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:14:56,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:14:56,746 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:14:56,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-06 18:14:56,922 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 18:14:56,922 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:14:56,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-06 18:14:56,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:14:57,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:14:57,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:14:58,296 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:14:58,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1978572114] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:14:58,296 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:14:58,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 9] total 19 [2022-12-06 18:14:58,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885167872] [2022-12-06 18:14:58,297 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:14:58,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-06 18:14:58,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:14:58,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-06 18:14:58,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-12-06 18:14:58,299 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 57 out of 92 [2022-12-06 18:14:58,301 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 4367 transitions, 164613 flow. Second operand has 19 states, 19 states have (on average 60.421052631578945) internal successors, (1148), 19 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:14:58,301 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:14:58,301 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 57 of 92 [2022-12-06 18:14:58,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:15:29,262 INFO L130 PetriNetUnfolder]: 9601/22389 cut-off events. [2022-12-06 18:15:29,262 INFO L131 PetriNetUnfolder]: For 576203/1230004 co-relation queries the response was YES. [2022-12-06 18:15:29,347 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300350 conditions, 22389 events. 9601/22389 cut-off events. For 576203/1230004 co-relation queries the response was YES. Maximal size of possible extension queue 1583. Compared 245385 event pairs, 96 based on Foata normal form. 2583/22178 useless extension candidates. Maximal degree in co-relation 235364. Up to 15622 conditions per place. [2022-12-06 18:15:29,606 INFO L137 encePairwiseOnDemand]: 75/92 looper letters, 3898 selfloop transitions, 2232 changer transitions 389/6693 dead transitions. [2022-12-06 18:15:29,606 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 6693 transitions, 265878 flow [2022-12-06 18:15:29,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-12-06 18:15:29,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-12-06 18:15:29,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 1923 transitions. [2022-12-06 18:15:29,625 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6967391304347826 [2022-12-06 18:15:29,625 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 168 predicate places. [2022-12-06 18:15:29,625 INFO L495 AbstractCegarLoop]: Abstraction has has 250 places, 6693 transitions, 265878 flow [2022-12-06 18:15:29,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 60.421052631578945) internal successors, (1148), 19 states have internal predecessors, (1148), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:15:29,626 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:15:29,626 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] [2022-12-06 18:15:29,652 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-12-06 18:15:29,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:15:29,846 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:15:29,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:15:29,847 INFO L85 PathProgramCache]: Analyzing trace with hash -45575295, now seen corresponding path program 3 times [2022-12-06 18:15:29,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:15:29,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357168508] [2022-12-06 18:15:29,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:15:29,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:15:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:15:30,287 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:15:30,287 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:15:30,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357168508] [2022-12-06 18:15:30,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357168508] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:15:30,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306632078] [2022-12-06 18:15:30,287 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-06 18:15:30,287 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:15:30,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:15:30,289 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:15:30,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-06 18:15:30,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-12-06 18:15:30,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:15:30,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-06 18:15:30,412 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:15:30,731 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:15:30,732 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:15:31,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:15:31,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306632078] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:15:31,258 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:15:31,258 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 21 [2022-12-06 18:15:31,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86780495] [2022-12-06 18:15:31,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:15:31,260 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-12-06 18:15:31,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:15:31,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-12-06 18:15:31,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2022-12-06 18:15:31,261 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 92 [2022-12-06 18:15:31,262 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 250 places, 6693 transitions, 265878 flow. Second operand has 21 states, 21 states have (on average 61.57142857142857) internal successors, (1293), 21 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:15:31,262 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:15:31,262 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 92 [2022-12-06 18:15:31,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:16:27,248 INFO L130 PetriNetUnfolder]: 12496/29370 cut-off events. [2022-12-06 18:16:27,248 INFO L131 PetriNetUnfolder]: For 737362/1190803 co-relation queries the response was YES. [2022-12-06 18:16:27,354 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414321 conditions, 29370 events. 12496/29370 cut-off events. For 737362/1190803 co-relation queries the response was YES. Maximal size of possible extension queue 2012. Compared 335435 event pairs, 106 based on Foata normal form. 2904/28739 useless extension candidates. Maximal degree in co-relation 321893. Up to 20522 conditions per place. [2022-12-06 18:16:27,866 INFO L137 encePairwiseOnDemand]: 75/92 looper letters, 5583 selfloop transitions, 3166 changer transitions 654/9730 dead transitions. [2022-12-06 18:16:27,866 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 298 places, 9730 transitions, 404138 flow [2022-12-06 18:16:27,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-12-06 18:16:27,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2022-12-06 18:16:27,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 3137 transitions. [2022-12-06 18:16:27,883 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.6958740017746229 [2022-12-06 18:16:27,883 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 216 predicate places. [2022-12-06 18:16:27,883 INFO L495 AbstractCegarLoop]: Abstraction has has 298 places, 9730 transitions, 404138 flow [2022-12-06 18:16:27,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 61.57142857142857) internal successors, (1293), 21 states have internal predecessors, (1293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:16:27,884 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:16:27,884 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] [2022-12-06 18:16:27,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-12-06 18:16:28,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-12-06 18:16:28,101 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:16:28,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:16:28,102 INFO L85 PathProgramCache]: Analyzing trace with hash 59909175, now seen corresponding path program 4 times [2022-12-06 18:16:28,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:16:28,102 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657040856] [2022-12-06 18:16:28,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:16:28,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:16:28,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:16:28,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:16:28,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:16:28,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657040856] [2022-12-06 18:16:28,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657040856] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:16:28,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062437648] [2022-12-06 18:16:28,537 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-12-06 18:16:28,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:16:28,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:16:28,539 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:16:28,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-12-06 18:16:28,620 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-12-06 18:16:28,620 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:16:28,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-06 18:16:28,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:16:28,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:16:28,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:16:29,256 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:16:29,256 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2062437648] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:16:29,257 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:16:29,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 18 [2022-12-06 18:16:29,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003542907] [2022-12-06 18:16:29,257 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:16:29,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-06 18:16:29,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:16:29,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-06 18:16:29,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=225, Unknown=0, NotChecked=0, Total=306 [2022-12-06 18:16:29,259 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 59 out of 92 [2022-12-06 18:16:29,260 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 298 places, 9730 transitions, 404138 flow. Second operand has 18 states, 18 states have (on average 61.888888888888886) internal successors, (1114), 18 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:16:29,260 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:16:29,260 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 59 of 92 [2022-12-06 18:16:29,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:18:07,716 INFO L130 PetriNetUnfolder]: 13911/32669 cut-off events. [2022-12-06 18:18:07,716 INFO L131 PetriNetUnfolder]: For 854909/1046456 co-relation queries the response was YES. [2022-12-06 18:18:07,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479773 conditions, 32669 events. 13911/32669 cut-off events. For 854909/1046456 co-relation queries the response was YES. Maximal size of possible extension queue 2336. Compared 379093 event pairs, 124 based on Foata normal form. 805/29520 useless extension candidates. Maximal degree in co-relation 441849. Up to 22944 conditions per place. [2022-12-06 18:18:08,278 INFO L137 encePairwiseOnDemand]: 78/92 looper letters, 6387 selfloop transitions, 2163 changer transitions 730/10879 dead transitions. [2022-12-06 18:18:08,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 320 places, 10879 transitions, 471555 flow [2022-12-06 18:18:08,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-12-06 18:18:08,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-12-06 18:18:08,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1484 transitions. [2022-12-06 18:18:08,297 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7013232514177694 [2022-12-06 18:18:08,298 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 238 predicate places. [2022-12-06 18:18:08,298 INFO L495 AbstractCegarLoop]: Abstraction has has 320 places, 10879 transitions, 471555 flow [2022-12-06 18:18:08,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 61.888888888888886) internal successors, (1114), 18 states have internal predecessors, (1114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:18:08,298 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:18:08,298 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] [2022-12-06 18:18:08,310 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-12-06 18:18:08,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:18:08,512 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:18:08,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:18:08,512 INFO L85 PathProgramCache]: Analyzing trace with hash -871252413, now seen corresponding path program 1 times [2022-12-06 18:18:08,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:18:08,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319304653] [2022-12-06 18:18:08,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:18:08,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:18:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:18:09,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:18:09,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:18:09,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319304653] [2022-12-06 18:18:09,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319304653] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:18:09,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1519530437] [2022-12-06 18:18:09,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:18:09,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:18:09,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:18:09,014 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:18:09,038 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-12-06 18:18:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:18:09,126 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-06 18:18:09,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:18:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:18:09,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:18:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:18:10,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1519530437] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:18:10,234 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:18:10,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 11] total 22 [2022-12-06 18:18:10,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593217247] [2022-12-06 18:18:10,234 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:18:10,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-12-06 18:18:10,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:18:10,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-12-06 18:18:10,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=325, Unknown=0, NotChecked=0, Total=462 [2022-12-06 18:18:10,236 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 92 [2022-12-06 18:18:10,237 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 320 places, 10879 transitions, 471555 flow. Second operand has 22 states, 22 states have (on average 66.13636363636364) internal successors, (1455), 22 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:18:10,237 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:18:10,237 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 92 [2022-12-06 18:18:10,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-06 18:20:52,656 INFO L130 PetriNetUnfolder]: 19790/43525 cut-off events. [2022-12-06 18:20:52,656 INFO L131 PetriNetUnfolder]: For 1189389/1672306 co-relation queries the response was YES. [2022-12-06 18:20:52,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 696753 conditions, 43525 events. 19790/43525 cut-off events. For 1189389/1672306 co-relation queries the response was YES. Maximal size of possible extension queue 3077. Compared 504416 event pairs, 38 based on Foata normal form. 3815/42533 useless extension candidates. Maximal degree in co-relation 643635. Up to 32120 conditions per place. [2022-12-06 18:20:53,383 INFO L137 encePairwiseOnDemand]: 76/92 looper letters, 9471 selfloop transitions, 7059 changer transitions 601/17206 dead transitions. [2022-12-06 18:20:53,383 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 387 places, 17206 transitions, 771193 flow [2022-12-06 18:20:53,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2022-12-06 18:20:53,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2022-12-06 18:20:53,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 5438 transitions. [2022-12-06 18:20:53,387 INFO L535 CegarLoopForPetriNet]: DFA transition density 0.7881159420289855 [2022-12-06 18:20:53,387 INFO L294 CegarLoopForPetriNet]: 82 programPoint places, 305 predicate places. [2022-12-06 18:20:53,387 INFO L495 AbstractCegarLoop]: Abstraction has has 387 places, 17206 transitions, 771193 flow [2022-12-06 18:20:53,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 66.13636363636364) internal successors, (1455), 22 states have internal predecessors, (1455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:20:53,388 INFO L205 CegarLoopForPetriNet]: Found error trace [2022-12-06 18:20:53,388 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] [2022-12-06 18:20:53,393 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-12-06 18:20:53,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-12-06 18:20:53,590 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-12-06 18:20:53,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-06 18:20:53,590 INFO L85 PathProgramCache]: Analyzing trace with hash 147469687, now seen corresponding path program 2 times [2022-12-06 18:20:53,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-06 18:20:53,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [132158606] [2022-12-06 18:20:53,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-06 18:20:53,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-06 18:20:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-06 18:20:53,804 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:20:53,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-06 18:20:53,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [132158606] [2022-12-06 18:20:53,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [132158606] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-06 18:20:53,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1582297477] [2022-12-06 18:20:53,805 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-06 18:20:53,805 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-06 18:20:53,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-06 18:20:53,806 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-06 18:20:53,809 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-12-06 18:20:53,890 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-06 18:20:53,891 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-06 18:20:53,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 15 conjunts are in the unsatisfiable core [2022-12-06 18:20:53,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-06 18:20:54,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:20:54,202 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-06 18:20:54,708 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-06 18:20:54,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1582297477] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-06 18:20:54,708 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-06 18:20:54,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 11] total 23 [2022-12-06 18:20:54,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858683348] [2022-12-06 18:20:54,709 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-06 18:20:54,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-12-06 18:20:54,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-06 18:20:54,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-12-06 18:20:54,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=384, Unknown=0, NotChecked=0, Total=506 [2022-12-06 18:20:54,710 INFO L490 CegarLoopForPetriNet]: Number of universal loopers: 64 out of 92 [2022-12-06 18:20:54,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 387 places, 17206 transitions, 771193 flow. Second operand has 23 states, 23 states have (on average 65.8695652173913) internal successors, (1515), 23 states have internal predecessors, (1515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-12-06 18:20:54,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-06 18:20:54,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 64 of 92 [2022-12-06 18:20:54,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2022-12-06 18:27:36,369 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 18:27:36,369 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2022-12-06 18:27:36,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 118 states. [2022-12-06 18:27:36,698 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-12-06 18:27:36,703 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-12-06 18:27:36,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-06 18:27:36,899 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (23states, 64/92 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1267939 conditions, 73285 events (35720/73284 cut-off events. For 1921924/2271789 co-relation queries the response was YES. Maximal size of possible extension queue 4769. Compared 886331 event pairs, 1 based on Foata normal form. 4966/70724 useless extension candidates. Maximal degree in co-relation 1100077. Up to 57437 conditions per place.). [2022-12-06 18:27:36,901 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-12-06 18:27:36,901 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-12-06 18:27:36,901 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-12-06 18:27:36,901 INFO L458 BasicCegarLoop]: Path program histogram: [11, 4, 4, 2, 2, 1] [2022-12-06 18:27:36,904 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-06 18:27:36,904 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-06 18:27:36,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.12 06:27:36 BasicIcfg [2022-12-06 18:27:36,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-06 18:27:36,909 INFO L158 Benchmark]: Toolchain (without parser) took 844840.51ms. Allocated memory was 185.6MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 161.8MB in the beginning and 1.6GB in the end (delta: -1.4GB). Peak memory consumption was 4.0GB. Max. memory is 8.0GB. [2022-12-06 18:27:36,909 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 185.6MB. Free memory is still 161.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-06 18:27:36,909 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.62ms. Allocated memory is still 185.6MB. Free memory was 161.2MB in the beginning and 149.0MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-06 18:27:36,909 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.07ms. Allocated memory is still 185.6MB. Free memory was 149.0MB in the beginning and 146.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-06 18:27:36,909 INFO L158 Benchmark]: Boogie Preprocessor took 20.57ms. Allocated memory is still 185.6MB. Free memory was 146.9MB in the beginning and 145.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-06 18:27:36,910 INFO L158 Benchmark]: RCFGBuilder took 482.62ms. Allocated memory is still 185.6MB. Free memory was 145.8MB in the beginning and 129.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. [2022-12-06 18:27:36,910 INFO L158 Benchmark]: TraceAbstraction took 844072.25ms. Allocated memory was 185.6MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 128.5MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 4.0GB. Max. memory is 8.0GB. [2022-12-06 18:27:36,911 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 185.6MB. Free memory is still 161.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 229.62ms. Allocated memory is still 185.6MB. Free memory was 161.2MB in the beginning and 149.0MB in the end (delta: 12.3MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 27.07ms. Allocated memory is still 185.6MB. Free memory was 149.0MB in the beginning and 146.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.57ms. Allocated memory is still 185.6MB. Free memory was 146.9MB in the beginning and 145.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 482.62ms. Allocated memory is still 185.6MB. Free memory was 145.8MB in the beginning and 129.0MB in the end (delta: 16.8MB). Peak memory consumption was 16.8MB. Max. memory is 8.0GB. * TraceAbstraction took 844072.25ms. Allocated memory was 185.6MB in the beginning and 4.4GB in the end (delta: 4.2GB). Free memory was 128.5MB in the beginning and 1.6GB in the end (delta: -1.5GB). Peak memory consumption was 4.0GB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - TimeoutResultAtElement [Line: 105]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (23states, 64/92 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1267939 conditions, 73285 events (35720/73284 cut-off events. For 1921924/2271789 co-relation queries the response was YES. Maximal size of possible extension queue 4769. Compared 886331 event pairs, 1 based on Foata normal form. 4966/70724 useless extension candidates. Maximal degree in co-relation 1100077. Up to 57437 conditions per place.). - TimeoutResultAtElement [Line: 98]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (23states, 64/92 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1267939 conditions, 73285 events (35720/73284 cut-off events. For 1921924/2271789 co-relation queries the response was YES. Maximal size of possible extension queue 4769. Compared 886331 event pairs, 1 based on Foata normal form. 4966/70724 useless extension candidates. Maximal degree in co-relation 1100077. Up to 57437 conditions per place.). - TimeoutResultAtElement [Line: 99]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (23states, 64/92 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1267939 conditions, 73285 events (35720/73284 cut-off events. For 1921924/2271789 co-relation queries the response was YES. Maximal size of possible extension queue 4769. Compared 886331 event pairs, 1 based on Foata normal form. 4966/70724 useless extension candidates. Maximal degree in co-relation 1100077. Up to 57437 conditions per place.). - TimeoutResultAtElement [Line: 97]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (23states, 64/92 universal loopers) in iteration 24,while PetriNetUnfolder was constructing finite prefix that currently has 1267939 conditions, 73285 events (35720/73284 cut-off events. For 1921924/2271789 co-relation queries the response was YES. Maximal size of possible extension queue 4769. Compared 886331 event pairs, 1 based on Foata normal form. 4966/70724 useless extension candidates. Maximal degree in co-relation 1100077. Up to 57437 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 108 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 843.9s, OverallIterations: 24, TraceHistogramMax: 1, PathProgramHistogramMax: 11, EmptinessCheckTime: 0.0s, AutomataDifference: 823.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2621 SdHoareTripleChecker+Valid, 10.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2621 mSDsluCounter, 1551 SdHoareTripleChecker+Invalid, 9.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 1251 mSDsCounter, 485 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 8315 IncrementalHoareTripleChecker+Invalid, 8800 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 485 mSolverCounterUnsat, 300 mSDtfsCounter, 8315 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1774 GetRequests, 1275 SyntacticMatches, 12 SemanticMatches, 487 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10001 ImplicationChecksByTransitivity, 15.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=771193occurred in iteration=23, InterpolantAutomatonStates: 337, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 15.5s InterpolantComputationTime, 2432 NumberOfCodeBlocks, 2432 NumberOfCodeBlocksAsserted, 44 NumberOfCheckSat, 2953 ConstructedInterpolants, 0 QuantifiedInterpolants, 21649 SizeOfPredicates, 75 NumberOfNonLiveVariables, 2098 ConjunctsInSsa, 148 ConjunctsInUnsatCore, 43 InterpolantComputations, 17 PerfectInterpolantSequences, 16/60 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown