/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 21:01:25,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 21:01:25,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 21:01:25,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 21:01:25,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 21:01:25,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 21:01:25,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 21:01:25,677 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 21:01:25,678 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 21:01:25,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 21:01:25,679 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 21:01:25,680 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 21:01:25,680 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 21:01:25,681 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 21:01:25,682 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 21:01:25,682 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 21:01:25,683 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 21:01:25,684 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 21:01:25,685 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 21:01:25,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 21:01:25,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 21:01:25,694 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 21:01:25,695 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 21:01:25,695 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 21:01:25,698 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 21:01:25,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 21:01:25,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 21:01:25,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 21:01:25,699 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 21:01:25,700 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 21:01:25,700 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 21:01:25,701 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 21:01:25,701 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 21:01:25,702 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 21:01:25,702 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 21:01:25,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 21:01:25,710 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 21:01:25,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 21:01:25,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 21:01:25,711 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 21:01:25,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 21:01:25,714 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 [2022-09-20 21:01:25,748 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 21:01:25,748 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 21:01:25,748 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 21:01:25,749 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 21:01:25,749 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 21:01:25,749 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 21:01:25,749 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 21:01:25,749 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 21:01:25,749 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 21:01:25,749 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 21:01:25,749 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 21:01:25,750 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 21:01:25,750 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 21:01:25,750 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 21:01:25,750 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 21:01:25,750 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 21:01:25,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 21:01:25,750 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 21:01:25,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 21:01:25,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 21:01:25,750 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 21:01:25,750 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 21:01:25,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 21:01:25,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:01:25,751 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 21:01:25,751 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 21:01:25,762 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 21:01:25,763 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 21:01:25,763 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 21:01:25,763 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 21:01:25,763 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 21:01:25,763 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 21:01:25,949 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 21:01:25,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 21:01:25,967 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 21:01:25,968 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 21:01:25,969 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 21:01:25,970 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c [2022-09-20 21:01:26,030 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce80a3b5e/8780aceb84ba4a559e9d1f5bd8df066d/FLAG1428191eb [2022-09-20 21:01:26,405 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 21:01:26,405 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c [2022-09-20 21:01:26,413 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce80a3b5e/8780aceb84ba4a559e9d1f5bd8df066d/FLAG1428191eb [2022-09-20 21:01:26,428 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce80a3b5e/8780aceb84ba4a559e9d1f5bd8df066d [2022-09-20 21:01:26,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 21:01:26,433 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 21:01:26,434 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 21:01:26,434 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 21:01:26,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 21:01:26,436 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:01:26" (1/1) ... [2022-09-20 21:01:26,437 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c09bbe5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:26, skipping insertion in model container [2022-09-20 21:01:26,451 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:01:26" (1/1) ... [2022-09-20 21:01:26,455 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 21:01:26,473 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 21:01:26,623 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c[3642,3655] [2022-09-20 21:01:26,630 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:01:26,637 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 21:01:26,672 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-1.wvr.c[3642,3655] [2022-09-20 21:01:26,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:01:26,689 INFO L208 MainTranslator]: Completed translation [2022-09-20 21:01:26,691 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:26 WrapperNode [2022-09-20 21:01:26,691 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 21:01:26,692 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 21:01:26,692 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 21:01:26,692 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 21:01:26,697 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:26" (1/1) ... [2022-09-20 21:01:26,713 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:26" (1/1) ... [2022-09-20 21:01:26,766 INFO L138 Inliner]: procedures = 27, calls = 68, calls flagged for inlining = 18, calls inlined = 24, statements flattened = 297 [2022-09-20 21:01:26,766 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 21:01:26,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 21:01:26,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 21:01:26,767 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 21:01:26,776 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:26" (1/1) ... [2022-09-20 21:01:26,776 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:26" (1/1) ... [2022-09-20 21:01:26,794 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:26" (1/1) ... [2022-09-20 21:01:26,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:26" (1/1) ... [2022-09-20 21:01:26,801 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:26" (1/1) ... [2022-09-20 21:01:26,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:26" (1/1) ... [2022-09-20 21:01:26,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:26" (1/1) ... [2022-09-20 21:01:26,825 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 21:01:26,828 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 21:01:26,828 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 21:01:26,829 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 21:01:26,829 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:26" (1/1) ... [2022-09-20 21:01:26,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:01:26,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:01:26,886 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) [2022-09-20 21:01:26,916 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 [2022-09-20 21:01:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 21:01:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 21:01:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 21:01:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 21:01:26,943 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 21:01:26,943 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 21:01:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 21:01:26,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 21:01:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 21:01:26,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 21:01:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-20 21:01:26,944 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-20 21:01:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 21:01:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 21:01:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 21:01:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 21:01:26,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 21:01:26,944 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 21:01:26,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 21:01:26,946 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-09-20 21:01:27,057 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 21:01:27,059 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 21:01:27,326 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 21:01:27,433 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 21:01:27,433 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-09-20 21:01:27,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:01:27 BoogieIcfgContainer [2022-09-20 21:01:27,435 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 21:01:27,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 21:01:27,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 21:01:27,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 21:01:27,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 09:01:26" (1/3) ... [2022-09-20 21:01:27,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0ddec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:01:27, skipping insertion in model container [2022-09-20 21:01:27,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:01:26" (2/3) ... [2022-09-20 21:01:27,441 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0ddec6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:01:27, skipping insertion in model container [2022-09-20 21:01:27,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:01:27" (3/3) ... [2022-09-20 21:01:27,442 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-1.wvr.c [2022-09-20 21:01:27,453 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 21:01:27,453 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 21:01:27,453 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 21:01:27,510 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-20 21:01:27,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 204 places, 206 transitions, 444 flow [2022-09-20 21:01:27,598 INFO L130 PetriNetUnfolder]: 15/202 cut-off events. [2022-09-20 21:01:27,598 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-20 21:01:27,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 202 events. 15/202 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 116 event pairs, 0 based on Foata normal form. 0/186 useless extension candidates. Maximal degree in co-relation 162. Up to 2 conditions per place. [2022-09-20 21:01:27,602 INFO L82 GeneralOperation]: Start removeDead. Operand has 204 places, 206 transitions, 444 flow [2022-09-20 21:01:27,605 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 187 places, 189 transitions, 402 flow [2022-09-20 21:01:27,611 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 21:01:27,616 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;@3f1a382b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 21:01:27,616 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-20 21:01:27,683 INFO L130 PetriNetUnfolder]: 15/188 cut-off events. [2022-09-20 21:01:27,683 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-20 21:01:27,683 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:27,684 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:27,684 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:01:27,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:27,688 INFO L85 PathProgramCache]: Analyzing trace with hash -276996244, now seen corresponding path program 1 times [2022-09-20 21:01:27,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:27,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805784071] [2022-09-20 21:01:27,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:27,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:27,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:27,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:27,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805784071] [2022-09-20 21:01:27,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805784071] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:27,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:27,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 21:01:27,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090095899] [2022-09-20 21:01:27,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:27,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 21:01:27,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:27,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 21:01:27,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 21:01:27,997 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 179 out of 206 [2022-09-20 21:01:28,002 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 187 places, 189 transitions, 402 flow. Second operand has 2 states, 2 states have (on average 185.5) internal successors, (371), 2 states have internal predecessors, (371), 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) [2022-09-20 21:01:28,002 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:28,002 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 179 of 206 [2022-09-20 21:01:28,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:28,143 INFO L130 PetriNetUnfolder]: 118/325 cut-off events. [2022-09-20 21:01:28,144 INFO L131 PetriNetUnfolder]: For 61/62 co-relation queries the response was YES. [2022-09-20 21:01:28,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 538 conditions, 325 events. 118/325 cut-off events. For 61/62 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 588 event pairs, 51 based on Foata normal form. 72/379 useless extension candidates. Maximal degree in co-relation 351. Up to 163 conditions per place. [2022-09-20 21:01:28,148 INFO L137 encePairwiseOnDemand]: 196/206 looper letters, 16 selfloop transitions, 0 changer transitions 5/179 dead transitions. [2022-09-20 21:01:28,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 188 places, 179 transitions, 414 flow [2022-09-20 21:01:28,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 21:01:28,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 21:01:28,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 384 transitions. [2022-09-20 21:01:28,162 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9320388349514563 [2022-09-20 21:01:28,162 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 384 transitions. [2022-09-20 21:01:28,163 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 384 transitions. [2022-09-20 21:01:28,166 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:28,167 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 384 transitions. [2022-09-20 21:01:28,171 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 192.0) internal successors, (384), 2 states have internal predecessors, (384), 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) [2022-09-20 21:01:28,177 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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) [2022-09-20 21:01:28,177 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 206.0) internal successors, (618), 3 states have internal predecessors, (618), 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) [2022-09-20 21:01:28,178 INFO L175 Difference]: Start difference. First operand has 187 places, 189 transitions, 402 flow. Second operand 2 states and 384 transitions. [2022-09-20 21:01:28,179 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 188 places, 179 transitions, 414 flow [2022-09-20 21:01:28,183 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 179 transitions, 398 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-09-20 21:01:28,187 INFO L231 Difference]: Finished difference. Result has 180 places, 174 transitions, 356 flow [2022-09-20 21:01:28,188 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=179, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=179, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=356, PETRI_PLACES=180, PETRI_TRANSITIONS=174} [2022-09-20 21:01:28,191 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, -7 predicate places. [2022-09-20 21:01:28,191 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 174 transitions, 356 flow [2022-09-20 21:01:28,192 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 185.5) internal successors, (371), 2 states have internal predecessors, (371), 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) [2022-09-20 21:01:28,192 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:28,192 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:28,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 21:01:28,193 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:01:28,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:28,195 INFO L85 PathProgramCache]: Analyzing trace with hash 927194731, now seen corresponding path program 1 times [2022-09-20 21:01:28,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:28,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130044346] [2022-09-20 21:01:28,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:28,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:28,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:28,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:28,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:28,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130044346] [2022-09-20 21:01:28,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130044346] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:28,578 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:28,578 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 21:01:28,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251378902] [2022-09-20 21:01:28,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:28,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 21:01:28,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:28,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 21:01:28,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-09-20 21:01:28,581 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 206 [2022-09-20 21:01:28,582 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 174 transitions, 356 flow. Second operand has 7 states, 7 states have (on average 148.57142857142858) internal successors, (1040), 7 states have internal predecessors, (1040), 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) [2022-09-20 21:01:28,582 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:28,582 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 206 [2022-09-20 21:01:28,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:28,788 INFO L130 PetriNetUnfolder]: 133/378 cut-off events. [2022-09-20 21:01:28,788 INFO L131 PetriNetUnfolder]: For 19/20 co-relation queries the response was YES. [2022-09-20 21:01:28,790 INFO L83 FinitePrefix]: Finished finitePrefix Result has 618 conditions, 378 events. 133/378 cut-off events. For 19/20 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 817 event pairs, 8 based on Foata normal form. 1/363 useless extension candidates. Maximal degree in co-relation 615. Up to 205 conditions per place. [2022-09-20 21:01:28,793 INFO L137 encePairwiseOnDemand]: 196/206 looper letters, 50 selfloop transitions, 7 changer transitions 4/188 dead transitions. [2022-09-20 21:01:28,793 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 181 places, 188 transitions, 513 flow [2022-09-20 21:01:28,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 21:01:28,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 21:01:28,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1063 transitions. [2022-09-20 21:01:28,796 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7371705963938974 [2022-09-20 21:01:28,796 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1063 transitions. [2022-09-20 21:01:28,796 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1063 transitions. [2022-09-20 21:01:28,796 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:28,796 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1063 transitions. [2022-09-20 21:01:28,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 151.85714285714286) internal successors, (1063), 7 states have internal predecessors, (1063), 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) [2022-09-20 21:01:28,802 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2022-09-20 21:01:28,802 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 206.0) internal successors, (1648), 8 states have internal predecessors, (1648), 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) [2022-09-20 21:01:28,802 INFO L175 Difference]: Start difference. First operand has 180 places, 174 transitions, 356 flow. Second operand 7 states and 1063 transitions. [2022-09-20 21:01:28,802 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 181 places, 188 transitions, 513 flow [2022-09-20 21:01:28,805 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 188 transitions, 513 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 21:01:28,807 INFO L231 Difference]: Finished difference. Result has 184 places, 178 transitions, 397 flow [2022-09-20 21:01:28,808 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=174, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=397, PETRI_PLACES=184, PETRI_TRANSITIONS=178} [2022-09-20 21:01:28,808 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, -3 predicate places. [2022-09-20 21:01:28,809 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 178 transitions, 397 flow [2022-09-20 21:01:28,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 148.57142857142858) internal successors, (1040), 7 states have internal predecessors, (1040), 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) [2022-09-20 21:01:28,809 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:28,809 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:28,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 21:01:28,810 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:01:28,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:28,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1587033649, now seen corresponding path program 1 times [2022-09-20 21:01:28,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:28,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321365806] [2022-09-20 21:01:28,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:28,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:28,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:28,990 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:28,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:28,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321365806] [2022-09-20 21:01:28,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321365806] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:28,992 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:28,992 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 21:01:28,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53015508] [2022-09-20 21:01:28,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:28,993 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 21:01:28,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:28,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 21:01:28,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-09-20 21:01:28,995 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 206 [2022-09-20 21:01:28,996 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 178 transitions, 397 flow. Second operand has 8 states, 8 states have (on average 154.25) internal successors, (1234), 8 states have internal predecessors, (1234), 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) [2022-09-20 21:01:28,997 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:28,997 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 206 [2022-09-20 21:01:28,997 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:29,269 INFO L130 PetriNetUnfolder]: 346/867 cut-off events. [2022-09-20 21:01:29,269 INFO L131 PetriNetUnfolder]: For 165/167 co-relation queries the response was YES. [2022-09-20 21:01:29,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1645 conditions, 867 events. 346/867 cut-off events. For 165/167 co-relation queries the response was YES. Maximal size of possible extension queue 45. Compared 3621 event pairs, 49 based on Foata normal form. 1/822 useless extension candidates. Maximal degree in co-relation 1638. Up to 208 conditions per place. [2022-09-20 21:01:29,275 INFO L137 encePairwiseOnDemand]: 196/206 looper letters, 59 selfloop transitions, 16 changer transitions 4/213 dead transitions. [2022-09-20 21:01:29,275 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 213 transitions, 663 flow [2022-09-20 21:01:29,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 21:01:29,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 21:01:29,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1276 transitions. [2022-09-20 21:01:29,278 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7742718446601942 [2022-09-20 21:01:29,278 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1276 transitions. [2022-09-20 21:01:29,278 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1276 transitions. [2022-09-20 21:01:29,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:29,279 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1276 transitions. [2022-09-20 21:01:29,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 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) [2022-09-20 21:01:29,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 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) [2022-09-20 21:01:29,285 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 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) [2022-09-20 21:01:29,285 INFO L175 Difference]: Start difference. First operand has 184 places, 178 transitions, 397 flow. Second operand 8 states and 1276 transitions. [2022-09-20 21:01:29,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 213 transitions, 663 flow [2022-09-20 21:01:29,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 213 transitions, 644 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-09-20 21:01:29,291 INFO L231 Difference]: Finished difference. Result has 191 places, 187 transitions, 500 flow [2022-09-20 21:01:29,291 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=384, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=178, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=164, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=500, PETRI_PLACES=191, PETRI_TRANSITIONS=187} [2022-09-20 21:01:29,293 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 4 predicate places. [2022-09-20 21:01:29,293 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 187 transitions, 500 flow [2022-09-20 21:01:29,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 154.25) internal successors, (1234), 8 states have internal predecessors, (1234), 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) [2022-09-20 21:01:29,293 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:29,294 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:29,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 21:01:29,294 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:01:29,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:29,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1222635345, now seen corresponding path program 1 times [2022-09-20 21:01:29,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:29,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804978005] [2022-09-20 21:01:29,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:29,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:29,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:29,508 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:29,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:29,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804978005] [2022-09-20 21:01:29,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804978005] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:29,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:29,509 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-20 21:01:29,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784388204] [2022-09-20 21:01:29,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:29,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 21:01:29,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:29,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 21:01:29,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-09-20 21:01:29,514 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 206 [2022-09-20 21:01:29,516 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 187 transitions, 500 flow. Second operand has 11 states, 11 states have (on average 138.1818181818182) internal successors, (1520), 11 states have internal predecessors, (1520), 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) [2022-09-20 21:01:29,516 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:29,516 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 206 [2022-09-20 21:01:29,516 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:29,894 INFO L130 PetriNetUnfolder]: 378/1024 cut-off events. [2022-09-20 21:01:29,895 INFO L131 PetriNetUnfolder]: For 796/797 co-relation queries the response was YES. [2022-09-20 21:01:29,898 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2266 conditions, 1024 events. 378/1024 cut-off events. For 796/797 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 4721 event pairs, 103 based on Foata normal form. 25/984 useless extension candidates. Maximal degree in co-relation 2255. Up to 503 conditions per place. [2022-09-20 21:01:29,902 INFO L137 encePairwiseOnDemand]: 193/206 looper letters, 69 selfloop transitions, 4 changer transitions 22/213 dead transitions. [2022-09-20 21:01:29,902 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 213 transitions, 794 flow [2022-09-20 21:01:29,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 21:01:29,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 21:01:29,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1557 transitions. [2022-09-20 21:01:29,905 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6871138570167696 [2022-09-20 21:01:29,906 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1557 transitions. [2022-09-20 21:01:29,906 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1557 transitions. [2022-09-20 21:01:29,906 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:29,906 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1557 transitions. [2022-09-20 21:01:29,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 141.54545454545453) internal successors, (1557), 11 states have internal predecessors, (1557), 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) [2022-09-20 21:01:29,911 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 206.0) internal successors, (2472), 12 states have internal predecessors, (2472), 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) [2022-09-20 21:01:29,912 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 206.0) internal successors, (2472), 12 states have internal predecessors, (2472), 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) [2022-09-20 21:01:29,912 INFO L175 Difference]: Start difference. First operand has 191 places, 187 transitions, 500 flow. Second operand 11 states and 1557 transitions. [2022-09-20 21:01:29,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 213 transitions, 794 flow [2022-09-20 21:01:29,915 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 197 places, 213 transitions, 790 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-09-20 21:01:29,917 INFO L231 Difference]: Finished difference. Result has 204 places, 188 transitions, 532 flow [2022-09-20 21:01:29,917 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=183, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=532, PETRI_PLACES=204, PETRI_TRANSITIONS=188} [2022-09-20 21:01:29,918 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 17 predicate places. [2022-09-20 21:01:29,918 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 188 transitions, 532 flow [2022-09-20 21:01:29,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 138.1818181818182) internal successors, (1520), 11 states have internal predecessors, (1520), 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) [2022-09-20 21:01:29,919 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:29,919 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:29,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 21:01:29,919 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:01:29,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:29,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1579373432, now seen corresponding path program 1 times [2022-09-20 21:01:29,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:29,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579555963] [2022-09-20 21:01:29,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:29,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:30,022 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:30,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:30,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579555963] [2022-09-20 21:01:30,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579555963] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:01:30,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:01:30,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 21:01:30,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105929876] [2022-09-20 21:01:30,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:01:30,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 21:01:30,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:30,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 21:01:30,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-09-20 21:01:30,024 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 150 out of 206 [2022-09-20 21:01:30,025 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 188 transitions, 532 flow. Second operand has 8 states, 8 states have (on average 154.25) internal successors, (1234), 8 states have internal predecessors, (1234), 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) [2022-09-20 21:01:30,025 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:30,025 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 150 of 206 [2022-09-20 21:01:30,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:30,299 INFO L130 PetriNetUnfolder]: 559/1353 cut-off events. [2022-09-20 21:01:30,299 INFO L131 PetriNetUnfolder]: For 1253/1255 co-relation queries the response was YES. [2022-09-20 21:01:30,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3156 conditions, 1353 events. 559/1353 cut-off events. For 1253/1255 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 7021 event pairs, 59 based on Foata normal form. 1/1284 useless extension candidates. Maximal degree in co-relation 3139. Up to 504 conditions per place. [2022-09-20 21:01:30,310 INFO L137 encePairwiseOnDemand]: 196/206 looper letters, 63 selfloop transitions, 19 changer transitions 6/223 dead transitions. [2022-09-20 21:01:30,310 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 223 transitions, 864 flow [2022-09-20 21:01:30,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 21:01:30,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 21:01:30,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1276 transitions. [2022-09-20 21:01:30,313 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7742718446601942 [2022-09-20 21:01:30,313 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1276 transitions. [2022-09-20 21:01:30,313 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1276 transitions. [2022-09-20 21:01:30,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:30,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1276 transitions. [2022-09-20 21:01:30,316 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 159.5) internal successors, (1276), 8 states have internal predecessors, (1276), 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) [2022-09-20 21:01:30,318 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 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) [2022-09-20 21:01:30,318 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 206.0) internal successors, (1854), 9 states have internal predecessors, (1854), 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) [2022-09-20 21:01:30,318 INFO L175 Difference]: Start difference. First operand has 204 places, 188 transitions, 532 flow. Second operand 8 states and 1276 transitions. [2022-09-20 21:01:30,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 223 transitions, 864 flow [2022-09-20 21:01:30,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 223 transitions, 820 flow, removed 19 selfloop flow, removed 9 redundant places. [2022-09-20 21:01:30,324 INFO L231 Difference]: Finished difference. Result has 203 places, 197 transitions, 658 flow [2022-09-20 21:01:30,324 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=171, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=658, PETRI_PLACES=203, PETRI_TRANSITIONS=197} [2022-09-20 21:01:30,324 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 16 predicate places. [2022-09-20 21:01:30,325 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 197 transitions, 658 flow [2022-09-20 21:01:30,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 154.25) internal successors, (1234), 8 states have internal predecessors, (1234), 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) [2022-09-20 21:01:30,325 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:30,325 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:30,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 21:01:30,325 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:01:30,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:30,326 INFO L85 PathProgramCache]: Analyzing trace with hash 331378776, now seen corresponding path program 1 times [2022-09-20 21:01:30,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:30,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379523433] [2022-09-20 21:01:30,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:30,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:30,500 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:30,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:30,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379523433] [2022-09-20 21:01:30,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379523433] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:01:30,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955268954] [2022-09-20 21:01:30,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:30,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:30,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:01:30,524 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) [2022-09-20 21:01:30,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 21:01:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:30,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 46 conjunts are in the unsatisfiable core [2022-09-20 21:01:30,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:01:31,072 INFO L356 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-09-20 21:01:31,072 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 15 [2022-09-20 21:01:31,207 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:31,207 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:01:31,394 INFO L356 Elim1Store]: treesize reduction 14, result has 22.2 percent of original size [2022-09-20 21:01:31,395 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2022-09-20 21:01:31,540 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-09-20 21:01:31,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955268954] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:01:31,540 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:01:31,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 10] total 27 [2022-09-20 21:01:31,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573383350] [2022-09-20 21:01:31,540 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:01:31,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-09-20 21:01:31,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:31,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-09-20 21:01:31,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=617, Unknown=0, NotChecked=0, Total=702 [2022-09-20 21:01:31,543 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 206 [2022-09-20 21:01:31,546 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 197 transitions, 658 flow. Second operand has 27 states, 27 states have (on average 120.48148148148148) internal successors, (3253), 27 states have internal predecessors, (3253), 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) [2022-09-20 21:01:31,546 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:31,546 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 206 [2022-09-20 21:01:31,546 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:33,834 INFO L130 PetriNetUnfolder]: 2575/5660 cut-off events. [2022-09-20 21:01:33,834 INFO L131 PetriNetUnfolder]: For 8883/8883 co-relation queries the response was YES. [2022-09-20 21:01:33,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14771 conditions, 5660 events. 2575/5660 cut-off events. For 8883/8883 co-relation queries the response was YES. Maximal size of possible extension queue 252. Compared 40803 event pairs, 28 based on Foata normal form. 36/5385 useless extension candidates. Maximal degree in co-relation 14754. Up to 2601 conditions per place. [2022-09-20 21:01:33,886 INFO L137 encePairwiseOnDemand]: 178/206 looper letters, 206 selfloop transitions, 142 changer transitions 42/489 dead transitions. [2022-09-20 21:01:33,886 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 235 places, 489 transitions, 2758 flow [2022-09-20 21:01:33,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-09-20 21:01:33,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2022-09-20 21:01:33,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 4365 transitions. [2022-09-20 21:01:33,893 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6054091539528432 [2022-09-20 21:01:33,893 INFO L72 ComplementDD]: Start complementDD. Operand 35 states and 4365 transitions. [2022-09-20 21:01:33,893 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 4365 transitions. [2022-09-20 21:01:33,895 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:33,895 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 35 states and 4365 transitions. [2022-09-20 21:01:33,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 36 states, 35 states have (on average 124.71428571428571) internal successors, (4365), 35 states have internal predecessors, (4365), 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) [2022-09-20 21:01:33,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 36 states, 36 states have (on average 206.0) internal successors, (7416), 36 states have internal predecessors, (7416), 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) [2022-09-20 21:01:33,912 INFO L81 ComplementDD]: Finished complementDD. Result has 36 states, 36 states have (on average 206.0) internal successors, (7416), 36 states have internal predecessors, (7416), 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) [2022-09-20 21:01:33,912 INFO L175 Difference]: Start difference. First operand has 203 places, 197 transitions, 658 flow. Second operand 35 states and 4365 transitions. [2022-09-20 21:01:33,912 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 235 places, 489 transitions, 2758 flow [2022-09-20 21:01:33,920 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 233 places, 489 transitions, 2730 flow, removed 14 selfloop flow, removed 2 redundant places. [2022-09-20 21:01:33,925 INFO L231 Difference]: Finished difference. Result has 252 places, 329 transitions, 1934 flow [2022-09-20 21:01:33,925 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=197, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=35, PETRI_FLOW=1934, PETRI_PLACES=252, PETRI_TRANSITIONS=329} [2022-09-20 21:01:33,926 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 65 predicate places. [2022-09-20 21:01:33,926 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 329 transitions, 1934 flow [2022-09-20 21:01:33,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 120.48148148148148) internal successors, (3253), 27 states have internal predecessors, (3253), 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) [2022-09-20 21:01:33,927 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:33,927 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:33,947 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-09-20 21:01:34,143 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 [2022-09-20 21:01:34,144 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:01:34,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:34,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1429900405, now seen corresponding path program 2 times [2022-09-20 21:01:34,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:34,145 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41538881] [2022-09-20 21:01:34,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:34,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:34,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:35,123 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:35,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:35,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41538881] [2022-09-20 21:01:35,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41538881] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:01:35,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1655318672] [2022-09-20 21:01:35,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-09-20 21:01:35,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:35,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:01:35,144 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) [2022-09-20 21:01:35,146 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 21:01:35,260 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-09-20 21:01:35,261 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:01:35,263 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 73 conjunts are in the unsatisfiable core [2022-09-20 21:01:35,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:01:36,581 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 21:01:36,582 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 25 [2022-09-20 21:01:36,895 INFO L356 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-09-20 21:01:36,895 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 15 [2022-09-20 21:01:37,063 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:37,064 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:01:37,518 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 31 [2022-09-20 21:01:37,529 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2022-09-20 21:01:38,700 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:38,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1655318672] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:01:38,700 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:01:38,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 27, 27] total 72 [2022-09-20 21:01:38,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378126694] [2022-09-20 21:01:38,701 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:01:38,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 72 states [2022-09-20 21:01:38,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:38,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2022-09-20 21:01:38,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=359, Invalid=4751, Unknown=2, NotChecked=0, Total=5112 [2022-09-20 21:01:38,706 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 206 [2022-09-20 21:01:38,712 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 329 transitions, 1934 flow. Second operand has 72 states, 72 states have (on average 100.125) internal successors, (7209), 72 states have internal predecessors, (7209), 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) [2022-09-20 21:01:38,712 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:38,712 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 206 [2022-09-20 21:01:38,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:01:55,424 INFO L130 PetriNetUnfolder]: 14148/32527 cut-off events. [2022-09-20 21:01:55,424 INFO L131 PetriNetUnfolder]: For 85125/85797 co-relation queries the response was YES. [2022-09-20 21:01:55,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99214 conditions, 32527 events. 14148/32527 cut-off events. For 85125/85797 co-relation queries the response was YES. Maximal size of possible extension queue 1406. Compared 351509 event pairs, 915 based on Foata normal form. 1869/32405 useless extension candidates. Maximal degree in co-relation 99179. Up to 14074 conditions per place. [2022-09-20 21:01:56,002 INFO L137 encePairwiseOnDemand]: 167/206 looper letters, 854 selfloop transitions, 384 changer transitions 72/1396 dead transitions. [2022-09-20 21:01:56,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 1396 transitions, 12218 flow [2022-09-20 21:01:56,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-09-20 21:01:56,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2022-09-20 21:01:56,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 8865 transitions. [2022-09-20 21:01:56,018 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5184816937653527 [2022-09-20 21:01:56,018 INFO L72 ComplementDD]: Start complementDD. Operand 83 states and 8865 transitions. [2022-09-20 21:01:56,018 INFO L73 IsDeterministic]: Start isDeterministic. Operand 83 states and 8865 transitions. [2022-09-20 21:01:56,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:01:56,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 83 states and 8865 transitions. [2022-09-20 21:01:56,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 84 states, 83 states have (on average 106.80722891566265) internal successors, (8865), 83 states have internal predecessors, (8865), 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) [2022-09-20 21:01:56,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 84 states, 84 states have (on average 206.0) internal successors, (17304), 84 states have internal predecessors, (17304), 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) [2022-09-20 21:01:56,070 INFO L81 ComplementDD]: Finished complementDD. Result has 84 states, 84 states have (on average 206.0) internal successors, (17304), 84 states have internal predecessors, (17304), 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) [2022-09-20 21:01:56,070 INFO L175 Difference]: Start difference. First operand has 252 places, 329 transitions, 1934 flow. Second operand 83 states and 8865 transitions. [2022-09-20 21:01:56,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 324 places, 1396 transitions, 12218 flow [2022-09-20 21:01:56,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 310 places, 1396 transitions, 11597 flow, removed 296 selfloop flow, removed 14 redundant places. [2022-09-20 21:01:56,170 INFO L231 Difference]: Finished difference. Result has 363 places, 741 transitions, 7136 flow [2022-09-20 21:01:56,171 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=1736, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=193, PETRI_DIFFERENCE_SUBTRAHEND_STATES=83, PETRI_FLOW=7136, PETRI_PLACES=363, PETRI_TRANSITIONS=741} [2022-09-20 21:01:56,171 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 176 predicate places. [2022-09-20 21:01:56,171 INFO L495 AbstractCegarLoop]: Abstraction has has 363 places, 741 transitions, 7136 flow [2022-09-20 21:01:56,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 72 states, 72 states have (on average 100.125) internal successors, (7209), 72 states have internal predecessors, (7209), 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) [2022-09-20 21:01:56,173 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:01:56,173 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:01:56,192 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-09-20 21:01:56,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-09-20 21:01:56,394 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:01:56,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:01:56,394 INFO L85 PathProgramCache]: Analyzing trace with hash -845538353, now seen corresponding path program 1 times [2022-09-20 21:01:56,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:01:56,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125592102] [2022-09-20 21:01:56,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:56,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:01:56,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:57,534 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:01:57,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:01:57,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125592102] [2022-09-20 21:01:57,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125592102] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:01:57,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1104616043] [2022-09-20 21:01:57,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:01:57,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:01:57,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:01:57,547 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) [2022-09-20 21:01:57,549 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-20 21:01:57,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:01:57,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 67 conjunts are in the unsatisfiable core [2022-09-20 21:01:57,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:01:57,680 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:01:57,759 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-20 21:01:57,759 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-20 21:01:58,447 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-09-20 21:01:58,565 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:01:58,566 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2022-09-20 21:01:58,882 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:01:58,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:01:59,201 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 31 [2022-09-20 21:01:59,204 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2022-09-20 21:01:59,617 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-09-20 21:01:59,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1104616043] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:01:59,618 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:01:59,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 20, 18] total 56 [2022-09-20 21:01:59,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762035639] [2022-09-20 21:01:59,618 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:01:59,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-09-20 21:01:59,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:01:59,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-09-20 21:01:59,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2873, Unknown=1, NotChecked=0, Total=3080 [2022-09-20 21:01:59,623 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 206 [2022-09-20 21:01:59,627 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 363 places, 741 transitions, 7136 flow. Second operand has 56 states, 56 states have (on average 97.75) internal successors, (5474), 56 states have internal predecessors, (5474), 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) [2022-09-20 21:01:59,627 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:01:59,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 206 [2022-09-20 21:01:59,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:02:16,296 INFO L130 PetriNetUnfolder]: 15674/36067 cut-off events. [2022-09-20 21:02:16,296 INFO L131 PetriNetUnfolder]: For 456153/458142 co-relation queries the response was YES. [2022-09-20 21:02:16,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 171824 conditions, 36067 events. 15674/36067 cut-off events. For 456153/458142 co-relation queries the response was YES. Maximal size of possible extension queue 1545. Compared 395885 event pairs, 1482 based on Foata normal form. 306/34084 useless extension candidates. Maximal degree in co-relation 171742. Up to 20274 conditions per place. [2022-09-20 21:02:17,034 INFO L137 encePairwiseOnDemand]: 163/206 looper letters, 710 selfloop transitions, 410 changer transitions 54/1260 dead transitions. [2022-09-20 21:02:17,035 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 418 places, 1260 transitions, 15158 flow [2022-09-20 21:02:17,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-09-20 21:02:17,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2022-09-20 21:02:17,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 6264 transitions. [2022-09-20 21:02:17,041 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.49044785468211716 [2022-09-20 21:02:17,041 INFO L72 ComplementDD]: Start complementDD. Operand 62 states and 6264 transitions. [2022-09-20 21:02:17,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 62 states and 6264 transitions. [2022-09-20 21:02:17,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:02:17,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 62 states and 6264 transitions. [2022-09-20 21:02:17,051 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 63 states, 62 states have (on average 101.03225806451613) internal successors, (6264), 62 states have internal predecessors, (6264), 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) [2022-09-20 21:02:17,061 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 63 states, 63 states have (on average 206.0) internal successors, (12978), 63 states have internal predecessors, (12978), 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) [2022-09-20 21:02:17,063 INFO L81 ComplementDD]: Finished complementDD. Result has 63 states, 63 states have (on average 206.0) internal successors, (12978), 63 states have internal predecessors, (12978), 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) [2022-09-20 21:02:17,063 INFO L175 Difference]: Start difference. First operand has 363 places, 741 transitions, 7136 flow. Second operand 62 states and 6264 transitions. [2022-09-20 21:02:17,063 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 418 places, 1260 transitions, 15158 flow [2022-09-20 21:02:20,196 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 400 places, 1260 transitions, 14514 flow, removed 308 selfloop flow, removed 18 redundant places. [2022-09-20 21:02:20,213 INFO L231 Difference]: Finished difference. Result has 432 places, 1047 transitions, 12323 flow [2022-09-20 21:02:20,213 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=6600, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=741, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=159, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=539, PETRI_DIFFERENCE_SUBTRAHEND_STATES=62, PETRI_FLOW=12323, PETRI_PLACES=432, PETRI_TRANSITIONS=1047} [2022-09-20 21:02:20,214 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 245 predicate places. [2022-09-20 21:02:20,214 INFO L495 AbstractCegarLoop]: Abstraction has has 432 places, 1047 transitions, 12323 flow [2022-09-20 21:02:20,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 56 states have (on average 97.75) internal successors, (5474), 56 states have internal predecessors, (5474), 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) [2022-09-20 21:02:20,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:02:20,216 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:02:20,243 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-09-20 21:02:20,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:02:20,433 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:02:20,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:02:20,434 INFO L85 PathProgramCache]: Analyzing trace with hash -2121714087, now seen corresponding path program 3 times [2022-09-20 21:02:20,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:02:20,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113532913] [2022-09-20 21:02:20,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:02:20,434 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:02:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:02:20,766 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-09-20 21:02:20,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:02:20,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113532913] [2022-09-20 21:02:20,766 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113532913] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:02:20,766 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1601203924] [2022-09-20 21:02:20,766 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-09-20 21:02:20,766 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:02:20,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:02:20,768 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) [2022-09-20 21:02:20,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-20 21:02:20,897 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-09-20 21:02:20,897 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:02:20,899 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 65 conjunts are in the unsatisfiable core [2022-09-20 21:02:20,902 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:02:21,771 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 21:02:21,772 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 20 [2022-09-20 21:02:21,911 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:02:21,912 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 23 [2022-09-20 21:02:22,166 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:02:22,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:02:22,471 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 58 treesize of output 31 [2022-09-20 21:02:22,474 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 11 [2022-09-20 21:02:23,230 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:02:23,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1601203924] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:02:23,231 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:02:23,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 26, 26] total 60 [2022-09-20 21:02:23,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951599600] [2022-09-20 21:02:23,231 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:02:23,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 60 states [2022-09-20 21:02:23,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:02:23,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2022-09-20 21:02:23,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=315, Invalid=3223, Unknown=2, NotChecked=0, Total=3540 [2022-09-20 21:02:23,238 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 103 out of 206 [2022-09-20 21:02:23,242 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 432 places, 1047 transitions, 12323 flow. Second operand has 60 states, 60 states have (on average 106.43333333333334) internal successors, (6386), 60 states have internal predecessors, (6386), 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) [2022-09-20 21:02:23,243 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:02:23,243 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 103 of 206 [2022-09-20 21:02:23,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:02:42,618 INFO L130 PetriNetUnfolder]: 22696/49581 cut-off events. [2022-09-20 21:02:42,619 INFO L131 PetriNetUnfolder]: For 866801/868998 co-relation queries the response was YES. [2022-09-20 21:02:43,786 INFO L83 FinitePrefix]: Finished finitePrefix Result has 281906 conditions, 49581 events. 22696/49581 cut-off events. For 866801/868998 co-relation queries the response was YES. Maximal size of possible extension queue 2187. Compared 548519 event pairs, 2611 based on Foata normal form. 516/47214 useless extension candidates. Maximal degree in co-relation 281797. Up to 21542 conditions per place. [2022-09-20 21:02:44,271 INFO L137 encePairwiseOnDemand]: 168/206 looper letters, 1366 selfloop transitions, 827 changer transitions 78/2360 dead transitions. [2022-09-20 21:02:44,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 2360 transitions, 35664 flow [2022-09-20 21:02:44,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-09-20 21:02:44,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2022-09-20 21:02:44,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 9431 transitions. [2022-09-20 21:02:44,279 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.5450184928340268 [2022-09-20 21:02:44,279 INFO L72 ComplementDD]: Start complementDD. Operand 84 states and 9431 transitions. [2022-09-20 21:02:44,279 INFO L73 IsDeterministic]: Start isDeterministic. Operand 84 states and 9431 transitions. [2022-09-20 21:02:44,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:02:44,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 84 states and 9431 transitions. [2022-09-20 21:02:44,289 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 85 states, 84 states have (on average 112.27380952380952) internal successors, (9431), 84 states have internal predecessors, (9431), 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) [2022-09-20 21:02:44,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 85 states, 85 states have (on average 206.0) internal successors, (17510), 85 states have internal predecessors, (17510), 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) [2022-09-20 21:02:44,308 INFO L81 ComplementDD]: Finished complementDD. Result has 85 states, 85 states have (on average 206.0) internal successors, (17510), 85 states have internal predecessors, (17510), 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) [2022-09-20 21:02:44,308 INFO L175 Difference]: Start difference. First operand has 432 places, 1047 transitions, 12323 flow. Second operand 84 states and 9431 transitions. [2022-09-20 21:02:44,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 503 places, 2360 transitions, 35664 flow [2022-09-20 21:02:52,768 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 2360 transitions, 30811 flow, removed 2386 selfloop flow, removed 35 redundant places. [2022-09-20 21:02:52,795 INFO L231 Difference]: Finished difference. Result has 516 places, 1718 transitions, 22337 flow [2022-09-20 21:02:52,796 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=10234, PETRI_DIFFERENCE_MINUEND_PLACES=385, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1047, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=301, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=589, PETRI_DIFFERENCE_SUBTRAHEND_STATES=84, PETRI_FLOW=22337, PETRI_PLACES=516, PETRI_TRANSITIONS=1718} [2022-09-20 21:02:52,796 INFO L287 CegarLoopForPetriNet]: 187 programPoint places, 329 predicate places. [2022-09-20 21:02:52,797 INFO L495 AbstractCegarLoop]: Abstraction has has 516 places, 1718 transitions, 22337 flow [2022-09-20 21:02:52,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 60 states, 60 states have (on average 106.43333333333334) internal successors, (6386), 60 states have internal predecessors, (6386), 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) [2022-09-20 21:02:52,797 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:02:52,798 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:02:52,815 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-09-20 21:02:53,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:02:53,016 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:02:53,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:02:53,016 INFO L85 PathProgramCache]: Analyzing trace with hash 2146824557, now seen corresponding path program 4 times [2022-09-20 21:02:53,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:02:53,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517588633] [2022-09-20 21:02:53,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:02:53,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:02:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:02:53,892 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:02:53,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:02:53,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517588633] [2022-09-20 21:02:53,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517588633] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:02:53,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159669723] [2022-09-20 21:02:53,893 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-09-20 21:02:53,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:02:53,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:02:53,894 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) [2022-09-20 21:02:53,895 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-09-20 21:02:54,007 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-09-20 21:02:54,007 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-09-20 21:02:54,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 451 conjuncts, 63 conjunts are in the unsatisfiable core [2022-09-20 21:02:54,012 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:02:54,801 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 21:02:54,802 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-09-20 21:02:54,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-09-20 21:02:54,890 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 24 [2022-09-20 21:02:54,945 INFO L356 Elim1Store]: treesize reduction 13, result has 18.8 percent of original size [2022-09-20 21:02:54,946 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 15 [2022-09-20 21:02:55,070 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:02:55,071 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:02:55,422 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 124 treesize of output 79 [2022-09-20 21:02:55,424 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 79 treesize of output 65 [2022-09-20 21:02:55,426 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 28 [2022-09-20 21:02:56,050 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-09-20 21:02:56,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159669723] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:02:56,051 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:02:56,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 22, 20] total 59 [2022-09-20 21:02:56,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052029626] [2022-09-20 21:02:56,051 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:02:56,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2022-09-20 21:02:56,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:02:56,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2022-09-20 21:02:56,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=228, Invalid=3188, Unknown=6, NotChecked=0, Total=3422 [2022-09-20 21:02:56,056 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 206 [2022-09-20 21:02:56,060 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 516 places, 1718 transitions, 22337 flow. Second operand has 59 states, 59 states have (on average 104.47457627118644) internal successors, (6164), 59 states have internal predecessors, (6164), 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) [2022-09-20 21:02:56,060 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:02:56,060 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 206 [2022-09-20 21:02:56,060 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand