/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/test-easy10.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 21:37:49,516 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 21:37:49,518 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 21:37:49,548 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 21:37:49,549 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 21:37:49,550 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 21:37:49,553 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 21:37:49,555 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 21:37:49,558 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 21:37:49,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 21:37:49,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 21:37:49,563 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 21:37:49,563 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 21:37:49,564 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 21:37:49,565 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 21:37:49,567 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 21:37:49,568 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 21:37:49,568 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 21:37:49,570 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 21:37:49,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 21:37:49,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 21:37:49,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 21:37:49,577 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 21:37:49,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 21:37:49,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 21:37:49,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 21:37:49,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 21:37:49,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 21:37:49,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 21:37:49,584 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 21:37:49,584 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 21:37:49,585 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 21:37:49,586 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 21:37:49,586 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 21:37:49,587 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 21:37:49,587 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 21:37:49,587 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 21:37:49,588 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 21:37:49,588 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 21:37:49,588 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 21:37:49,589 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 21:37:49,589 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 21:37:49,611 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 21:37:49,611 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 21:37:49,612 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 21:37:49,612 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 21:37:49,612 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 21:37:49,612 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 21:37:49,612 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 21:37:49,612 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 21:37:49,612 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 21:37:49,613 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 21:37:49,613 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 21:37:49,613 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 21:37:49,613 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 21:37:49,613 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 21:37:49,613 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 21:37:49,613 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 21:37:49,614 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 21:37:49,614 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 21:37:49,614 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 21:37:49,614 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 21:37:49,614 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 21:37:49,614 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 21:37:49,614 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 21:37:49,614 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:37:49,614 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 21:37:49,614 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 21:37:49,615 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 21:37:49,615 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 21:37:49,615 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 21:37:49,615 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 21:37:49,616 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 21:37:49,616 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 21:37:49,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 21:37:49,818 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 21:37:49,820 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 21:37:49,820 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 21:37:49,822 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 21:37:49,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/test-easy10.wvr.c [2022-09-20 21:37:49,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19d02f3e6/e2eecf3245bc464598abffa0d4bca7ee/FLAG015984395 [2022-09-20 21:37:50,214 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 21:37:50,214 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/test-easy10.wvr.c [2022-09-20 21:37:50,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19d02f3e6/e2eecf3245bc464598abffa0d4bca7ee/FLAG015984395 [2022-09-20 21:37:50,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/19d02f3e6/e2eecf3245bc464598abffa0d4bca7ee [2022-09-20 21:37:50,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 21:37:50,660 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 21:37:50,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 21:37:50,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 21:37:50,666 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 21:37:50,667 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:37:50" (1/1) ... [2022-09-20 21:37:50,668 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5609adbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:37:50, skipping insertion in model container [2022-09-20 21:37:50,668 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:37:50" (1/1) ... [2022-09-20 21:37:50,672 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 21:37:50,687 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 21:37:50,822 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/test-easy10.wvr.c[3907,3920] [2022-09-20 21:37:50,824 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:37:50,829 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 21:37:50,845 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/test-easy10.wvr.c[3907,3920] [2022-09-20 21:37:50,846 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:37:50,855 INFO L208 MainTranslator]: Completed translation [2022-09-20 21:37:50,855 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:37:50 WrapperNode [2022-09-20 21:37:50,855 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 21:37:50,856 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 21:37:50,856 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 21:37:50,856 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 21:37:50,861 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:37:50" (1/1) ... [2022-09-20 21:37:50,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:37:50" (1/1) ... [2022-09-20 21:37:50,880 INFO L138 Inliner]: procedures = 23, calls = 84, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 188 [2022-09-20 21:37:50,881 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 21:37:50,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 21:37:50,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 21:37:50,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 21:37:50,886 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:37:50" (1/1) ... [2022-09-20 21:37:50,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:37:50" (1/1) ... [2022-09-20 21:37:50,888 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:37:50" (1/1) ... [2022-09-20 21:37:50,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:37:50" (1/1) ... [2022-09-20 21:37:50,893 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:37:50" (1/1) ... [2022-09-20 21:37:50,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:37:50" (1/1) ... [2022-09-20 21:37:50,895 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:37:50" (1/1) ... [2022-09-20 21:37:50,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 21:37:50,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 21:37:50,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 21:37:50,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 21:37:50,897 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:37:50" (1/1) ... [2022-09-20 21:37:50,911 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:37:50,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:37:50,928 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 21:37:50,946 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 21:37:50,962 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 21:37:50,962 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 21:37:50,963 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 21:37:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 21:37:50,963 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 21:37:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 21:37:50,963 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 21:37:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2022-09-20 21:37:50,963 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2022-09-20 21:37:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 21:37:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 21:37:50,963 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 21:37:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 21:37:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 21:37:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 21:37:50,964 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 21:37:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 21:37:50,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 21:37:50,965 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 21:37:51,075 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 21:37:51,076 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 21:37:51,273 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 21:37:51,331 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 21:37:51,331 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 21:37:51,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:37:51 BoogieIcfgContainer [2022-09-20 21:37:51,333 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 21:37:51,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 21:37:51,335 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 21:37:51,353 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 21:37:51,353 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 09:37:50" (1/3) ... [2022-09-20 21:37:51,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665a0fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:37:51, skipping insertion in model container [2022-09-20 21:37:51,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:37:50" (2/3) ... [2022-09-20 21:37:51,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@665a0fa6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:37:51, skipping insertion in model container [2022-09-20 21:37:51,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:37:51" (3/3) ... [2022-09-20 21:37:51,355 INFO L112 eAbstractionObserver]: Analyzing ICFG test-easy10.wvr.c [2022-09-20 21:37:51,366 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 21:37:51,366 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 21:37:51,367 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 21:37:51,441 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2022-09-20 21:37:51,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 138 transitions, 308 flow [2022-09-20 21:37:51,505 INFO L130 PetriNetUnfolder]: 2/134 cut-off events. [2022-09-20 21:37:51,505 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-20 21:37:51,507 INFO L83 FinitePrefix]: Finished finitePrefix Result has 151 conditions, 134 events. 2/134 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 74 event pairs, 0 based on Foata normal form. 0/131 useless extension candidates. Maximal degree in co-relation 95. Up to 2 conditions per place. [2022-09-20 21:37:51,508 INFO L82 GeneralOperation]: Start removeDead. Operand has 149 places, 138 transitions, 308 flow [2022-09-20 21:37:51,511 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 121 transitions, 266 flow [2022-09-20 21:37:51,517 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 21:37:51,521 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;@41959fdb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 21:37:51,521 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2022-09-20 21:37:51,560 INFO L130 PetriNetUnfolder]: 2/120 cut-off events. [2022-09-20 21:37:51,560 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-09-20 21:37:51,560 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:37:51,561 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] [2022-09-20 21:37:51,561 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 21:37:51,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:37:51,564 INFO L85 PathProgramCache]: Analyzing trace with hash 139718033, now seen corresponding path program 1 times [2022-09-20 21:37:51,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:37:51,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1106294426] [2022-09-20 21:37:51,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:37:51,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:37:51,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:37:52,049 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 21:37:52,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:37:52,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1106294426] [2022-09-20 21:37:52,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1106294426] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:37:52,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:37:52,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 21:37:52,052 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464205130] [2022-09-20 21:37:52,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:37:52,058 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 21:37:52,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:37:52,080 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 21:37:52,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 21:37:52,088 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-09-20 21:37:52,099 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 121 transitions, 266 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 21:37:52,099 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:37:52,099 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-09-20 21:37:52,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:37:52,194 INFO L130 PetriNetUnfolder]: 58/321 cut-off events. [2022-09-20 21:37:52,194 INFO L131 PetriNetUnfolder]: For 62/62 co-relation queries the response was YES. [2022-09-20 21:37:52,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 321 events. 58/321 cut-off events. For 62/62 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1162 event pairs, 13 based on Foata normal form. 10/326 useless extension candidates. Maximal degree in co-relation 368. Up to 100 conditions per place. [2022-09-20 21:37:52,201 INFO L137 encePairwiseOnDemand]: 133/138 looper letters, 16 selfloop transitions, 2 changer transitions 2/123 dead transitions. [2022-09-20 21:37:52,201 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 123 transitions, 312 flow [2022-09-20 21:37:52,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 21:37:52,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 21:37:52,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 384 transitions. [2022-09-20 21:37:52,215 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.927536231884058 [2022-09-20 21:37:52,216 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 384 transitions. [2022-09-20 21:37:52,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 384 transitions. [2022-09-20 21:37:52,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:37:52,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 384 transitions. [2022-09-20 21:37:52,225 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 128.0) internal successors, (384), 3 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 21:37:52,231 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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 21:37:52,231 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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 21:37:52,232 INFO L175 Difference]: Start difference. First operand has 132 places, 121 transitions, 266 flow. Second operand 3 states and 384 transitions. [2022-09-20 21:37:52,234 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 134 places, 123 transitions, 312 flow [2022-09-20 21:37:52,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 126 places, 123 transitions, 292 flow, removed 0 selfloop flow, removed 8 redundant places. [2022-09-20 21:37:52,245 INFO L231 Difference]: Finished difference. Result has 127 places, 117 transitions, 250 flow [2022-09-20 21:37:52,247 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=127, PETRI_TRANSITIONS=117} [2022-09-20 21:37:52,251 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, -5 predicate places. [2022-09-20 21:37:52,252 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 117 transitions, 250 flow [2022-09-20 21:37:52,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 21:37:52,252 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:37:52,252 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] [2022-09-20 21:37:52,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 21:37:52,253 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 21:37:52,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:37:52,254 INFO L85 PathProgramCache]: Analyzing trace with hash -2135919187, now seen corresponding path program 2 times [2022-09-20 21:37:52,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:37:52,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156031806] [2022-09-20 21:37:52,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:37:52,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:37:52,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:37:53,564 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 21:37:53,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:37:53,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156031806] [2022-09-20 21:37:53,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156031806] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:37:53,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:37:53,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-09-20 21:37:53,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977093974] [2022-09-20 21:37:53,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:37:53,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-20 21:37:53,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:37:53,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-20 21:37:53,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2022-09-20 21:37:53,571 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-09-20 21:37:53,573 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 117 transitions, 250 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 21:37:53,573 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:37:53,576 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-09-20 21:37:53,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:37:56,126 INFO L130 PetriNetUnfolder]: 7066/13731 cut-off events. [2022-09-20 21:37:56,126 INFO L131 PetriNetUnfolder]: For 1094/1094 co-relation queries the response was YES. [2022-09-20 21:37:56,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25105 conditions, 13731 events. 7066/13731 cut-off events. For 1094/1094 co-relation queries the response was YES. Maximal size of possible extension queue 579. Compared 118662 event pairs, 1195 based on Foata normal form. 1/13675 useless extension candidates. Maximal degree in co-relation 17380. Up to 2740 conditions per place. [2022-09-20 21:37:56,195 INFO L137 encePairwiseOnDemand]: 120/138 looper letters, 193 selfloop transitions, 17 changer transitions 13/292 dead transitions. [2022-09-20 21:37:56,196 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 292 transitions, 1093 flow [2022-09-20 21:37:56,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 21:37:56,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 21:37:56,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1584 transitions. [2022-09-20 21:37:56,199 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.717391304347826 [2022-09-20 21:37:56,199 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1584 transitions. [2022-09-20 21:37:56,199 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1584 transitions. [2022-09-20 21:37:56,199 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:37:56,199 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1584 transitions. [2022-09-20 21:37:56,202 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 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 21:37:56,205 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 21:37:56,206 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 21:37:56,206 INFO L175 Difference]: Start difference. First operand has 127 places, 117 transitions, 250 flow. Second operand 16 states and 1584 transitions. [2022-09-20 21:37:56,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 292 transitions, 1093 flow [2022-09-20 21:37:56,210 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 292 transitions, 1089 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 21:37:56,214 INFO L231 Difference]: Finished difference. Result has 153 places, 131 transitions, 380 flow [2022-09-20 21:37:56,214 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=380, PETRI_PLACES=153, PETRI_TRANSITIONS=131} [2022-09-20 21:37:56,215 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, 21 predicate places. [2022-09-20 21:37:56,215 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 131 transitions, 380 flow [2022-09-20 21:37:56,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 21:37:56,216 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:37:56,216 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] [2022-09-20 21:37:56,216 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 21:37:56,216 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 21:37:56,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:37:56,218 INFO L85 PathProgramCache]: Analyzing trace with hash -1665978389, now seen corresponding path program 3 times [2022-09-20 21:37:56,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:37:56,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600476525] [2022-09-20 21:37:56,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:37:56,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:37:56,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:37:56,328 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 21:37:56,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:37:56,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600476525] [2022-09-20 21:37:56,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600476525] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:37:56,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:37:56,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 21:37:56,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [209721695] [2022-09-20 21:37:56,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:37:56,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 21:37:56,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:37:56,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 21:37:56,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 21:37:56,332 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-09-20 21:37:56,332 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 131 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 21:37:56,332 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:37:56,333 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-09-20 21:37:56,333 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:37:56,495 INFO L130 PetriNetUnfolder]: 270/1315 cut-off events. [2022-09-20 21:37:56,495 INFO L131 PetriNetUnfolder]: For 364/386 co-relation queries the response was YES. [2022-09-20 21:37:56,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2447 conditions, 1315 events. 270/1315 cut-off events. For 364/386 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 10219 event pairs, 86 based on Foata normal form. 31/1283 useless extension candidates. Maximal degree in co-relation 2405. Up to 370 conditions per place. [2022-09-20 21:37:56,503 INFO L137 encePairwiseOnDemand]: 135/138 looper letters, 16 selfloop transitions, 2 changer transitions 0/135 dead transitions. [2022-09-20 21:37:56,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 135 transitions, 428 flow [2022-09-20 21:37:56,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 21:37:56,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 21:37:56,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 382 transitions. [2022-09-20 21:37:56,504 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9227053140096618 [2022-09-20 21:37:56,504 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 382 transitions. [2022-09-20 21:37:56,504 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 382 transitions. [2022-09-20 21:37:56,504 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:37:56,504 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 382 transitions. [2022-09-20 21:37:56,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.33333333333333) internal successors, (382), 3 states have internal predecessors, (382), 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 21:37:56,506 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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 21:37:56,506 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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 21:37:56,506 INFO L175 Difference]: Start difference. First operand has 153 places, 131 transitions, 380 flow. Second operand 3 states and 382 transitions. [2022-09-20 21:37:56,506 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 135 transitions, 428 flow [2022-09-20 21:37:56,510 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 135 transitions, 420 flow, removed 4 selfloop flow, removed 4 redundant places. [2022-09-20 21:37:56,511 INFO L231 Difference]: Finished difference. Result has 148 places, 131 transitions, 380 flow [2022-09-20 21:37:56,512 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=372, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=380, PETRI_PLACES=148, PETRI_TRANSITIONS=131} [2022-09-20 21:37:56,515 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, 16 predicate places. [2022-09-20 21:37:56,515 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 131 transitions, 380 flow [2022-09-20 21:37:56,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 21:37:56,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:37:56,515 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] [2022-09-20 21:37:56,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 21:37:56,516 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 21:37:56,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:37:56,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1533519287, now seen corresponding path program 4 times [2022-09-20 21:37:56,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:37:56,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1817104114] [2022-09-20 21:37:56,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:37:56,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:37:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:37:56,621 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 21:37:56,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:37:56,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1817104114] [2022-09-20 21:37:56,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1817104114] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:37:56,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:37:56,622 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 21:37:56,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697872528] [2022-09-20 21:37:56,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:37:56,623 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 21:37:56,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:37:56,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 21:37:56,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 21:37:56,626 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-09-20 21:37:56,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 131 transitions, 380 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 21:37:56,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:37:56,627 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-09-20 21:37:56,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:37:56,785 INFO L130 PetriNetUnfolder]: 245/1359 cut-off events. [2022-09-20 21:37:56,785 INFO L131 PetriNetUnfolder]: For 399/413 co-relation queries the response was YES. [2022-09-20 21:37:56,789 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2518 conditions, 1359 events. 245/1359 cut-off events. For 399/413 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 10762 event pairs, 194 based on Foata normal form. 19/1290 useless extension candidates. Maximal degree in co-relation 2096. Up to 398 conditions per place. [2022-09-20 21:37:56,791 INFO L137 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2022-09-20 21:37:56,792 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 134 transitions, 423 flow [2022-09-20 21:37:56,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 21:37:56,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 21:37:56,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-09-20 21:37:56,794 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2022-09-20 21:37:56,794 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-09-20 21:37:56,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-09-20 21:37:56,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:37:56,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-09-20 21:37:56,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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 21:37:56,795 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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 21:37:56,796 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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 21:37:56,796 INFO L175 Difference]: Start difference. First operand has 148 places, 131 transitions, 380 flow. Second operand 3 states and 383 transitions. [2022-09-20 21:37:56,796 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 134 transitions, 423 flow [2022-09-20 21:37:56,800 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 146 places, 134 transitions, 411 flow, removed 1 selfloop flow, removed 4 redundant places. [2022-09-20 21:37:56,802 INFO L231 Difference]: Finished difference. Result has 147 places, 129 transitions, 366 flow [2022-09-20 21:37:56,802 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=358, PETRI_DIFFERENCE_MINUEND_PLACES=144, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=366, PETRI_PLACES=147, PETRI_TRANSITIONS=129} [2022-09-20 21:37:56,805 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, 15 predicate places. [2022-09-20 21:37:56,806 INFO L495 AbstractCegarLoop]: Abstraction has has 147 places, 129 transitions, 366 flow [2022-09-20 21:37:56,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 21:37:56,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:37:56,807 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] [2022-09-20 21:37:56,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 21:37:56,807 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 21:37:56,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:37:56,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1292835621, now seen corresponding path program 5 times [2022-09-20 21:37:56,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:37:56,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145429288] [2022-09-20 21:37:56,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:37:56,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:37:56,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:37:56,879 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 21:37:56,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:37:56,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145429288] [2022-09-20 21:37:56,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145429288] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:37:56,880 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:37:56,880 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 21:37:56,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003896759] [2022-09-20 21:37:56,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:37:56,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 21:37:56,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:37:56,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 21:37:56,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 21:37:56,881 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 121 out of 138 [2022-09-20 21:37:56,882 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 147 places, 129 transitions, 366 flow. Second operand has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 21:37:56,882 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:37:56,882 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 121 of 138 [2022-09-20 21:37:56,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:37:56,996 INFO L130 PetriNetUnfolder]: 276/1223 cut-off events. [2022-09-20 21:37:56,996 INFO L131 PetriNetUnfolder]: For 397/436 co-relation queries the response was YES. [2022-09-20 21:37:57,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2391 conditions, 1223 events. 276/1223 cut-off events. For 397/436 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 9035 event pairs, 73 based on Foata normal form. 28/1202 useless extension candidates. Maximal degree in co-relation 2089. Up to 384 conditions per place. [2022-09-20 21:37:57,004 INFO L137 encePairwiseOnDemand]: 135/138 looper letters, 17 selfloop transitions, 2 changer transitions 0/134 dead transitions. [2022-09-20 21:37:57,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 134 transitions, 421 flow [2022-09-20 21:37:57,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 21:37:57,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 21:37:57,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 383 transitions. [2022-09-20 21:37:57,005 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9251207729468599 [2022-09-20 21:37:57,005 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 383 transitions. [2022-09-20 21:37:57,005 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 383 transitions. [2022-09-20 21:37:57,006 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:37:57,006 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 383 transitions. [2022-09-20 21:37:57,007 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 127.66666666666667) internal successors, (383), 3 states have internal predecessors, (383), 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 21:37:57,008 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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 21:37:57,008 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 138.0) internal successors, (552), 4 states have internal predecessors, (552), 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 21:37:57,009 INFO L175 Difference]: Start difference. First operand has 147 places, 129 transitions, 366 flow. Second operand 3 states and 383 transitions. [2022-09-20 21:37:57,009 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 134 transitions, 421 flow [2022-09-20 21:37:57,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 134 transitions, 417 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 21:37:57,013 INFO L231 Difference]: Finished difference. Result has 148 places, 129 transitions, 370 flow [2022-09-20 21:37:57,014 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=362, PETRI_DIFFERENCE_MINUEND_PLACES=145, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=370, PETRI_PLACES=148, PETRI_TRANSITIONS=129} [2022-09-20 21:37:57,016 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, 16 predicate places. [2022-09-20 21:37:57,016 INFO L495 AbstractCegarLoop]: Abstraction has has 148 places, 129 transitions, 370 flow [2022-09-20 21:37:57,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 125.66666666666667) internal successors, (377), 3 states have internal predecessors, (377), 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 21:37:57,016 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:37:57,016 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] [2022-09-20 21:37:57,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 21:37:57,017 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 21:37:57,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:37:57,017 INFO L85 PathProgramCache]: Analyzing trace with hash -168586989, now seen corresponding path program 6 times [2022-09-20 21:37:57,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:37:57,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901830657] [2022-09-20 21:37:57,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:37:57,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:37:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:37:57,931 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 21:37:57,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:37:57,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901830657] [2022-09-20 21:37:57,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901830657] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:37:57,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:37:57,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-09-20 21:37:57,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953417234] [2022-09-20 21:37:57,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:37:57,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-20 21:37:57,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:37:57,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-20 21:37:57,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=188, Unknown=0, NotChecked=0, Total=240 [2022-09-20 21:37:57,933 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-09-20 21:37:57,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 129 transitions, 370 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 21:37:57,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:37:57,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-09-20 21:37:57,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:38:00,686 INFO L130 PetriNetUnfolder]: 7456/16390 cut-off events. [2022-09-20 21:38:00,686 INFO L131 PetriNetUnfolder]: For 12321/12329 co-relation queries the response was YES. [2022-09-20 21:38:00,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40945 conditions, 16390 events. 7456/16390 cut-off events. For 12321/12329 co-relation queries the response was YES. Maximal size of possible extension queue 949. Compared 157314 event pairs, 2781 based on Foata normal form. 3/16268 useless extension candidates. Maximal degree in co-relation 32505. Up to 4665 conditions per place. [2022-09-20 21:38:00,795 INFO L137 encePairwiseOnDemand]: 121/138 looper letters, 208 selfloop transitions, 26 changer transitions 13/316 dead transitions. [2022-09-20 21:38:00,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 316 transitions, 1607 flow [2022-09-20 21:38:00,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 21:38:00,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 21:38:00,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1569 transitions. [2022-09-20 21:38:00,799 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7105978260869565 [2022-09-20 21:38:00,799 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1569 transitions. [2022-09-20 21:38:00,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1569 transitions. [2022-09-20 21:38:00,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:38:00,800 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1569 transitions. [2022-09-20 21:38:00,802 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.0625) internal successors, (1569), 16 states have internal predecessors, (1569), 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 21:38:00,804 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 21:38:00,805 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 21:38:00,805 INFO L175 Difference]: Start difference. First operand has 148 places, 129 transitions, 370 flow. Second operand 16 states and 1569 transitions. [2022-09-20 21:38:00,805 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 316 transitions, 1607 flow [2022-09-20 21:38:00,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 316 transitions, 1603 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 21:38:00,893 INFO L231 Difference]: Finished difference. Result has 175 places, 150 transitions, 628 flow [2022-09-20 21:38:00,893 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=146, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=628, PETRI_PLACES=175, PETRI_TRANSITIONS=150} [2022-09-20 21:38:00,894 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, 43 predicate places. [2022-09-20 21:38:00,894 INFO L495 AbstractCegarLoop]: Abstraction has has 175 places, 150 transitions, 628 flow [2022-09-20 21:38:00,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 21:38:00,894 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:38:00,895 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] [2022-09-20 21:38:00,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 21:38:00,895 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 21:38:00,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:38:00,895 INFO L85 PathProgramCache]: Analyzing trace with hash -1991064101, now seen corresponding path program 7 times [2022-09-20 21:38:00,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:38:00,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131885246] [2022-09-20 21:38:00,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:38:00,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:38:00,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:38:01,606 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 21:38:01,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:38:01,606 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131885246] [2022-09-20 21:38:01,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131885246] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:38:01,607 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:38:01,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-09-20 21:38:01,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456230925] [2022-09-20 21:38:01,607 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:38:01,607 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-20 21:38:01,607 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:38:01,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-20 21:38:01,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-09-20 21:38:01,609 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-09-20 21:38:01,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 175 places, 150 transitions, 628 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 21:38:01,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:38:01,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-09-20 21:38:01,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:38:05,527 INFO L130 PetriNetUnfolder]: 11101/27053 cut-off events. [2022-09-20 21:38:05,527 INFO L131 PetriNetUnfolder]: For 50234/50234 co-relation queries the response was YES. [2022-09-20 21:38:05,639 INFO L83 FinitePrefix]: Finished finitePrefix Result has 77305 conditions, 27053 events. 11101/27053 cut-off events. For 50234/50234 co-relation queries the response was YES. Maximal size of possible extension queue 1809. Compared 308259 event pairs, 4703 based on Foata normal form. 1/26657 useless extension candidates. Maximal degree in co-relation 76834. Up to 5807 conditions per place. [2022-09-20 21:38:05,722 INFO L137 encePairwiseOnDemand]: 121/138 looper letters, 275 selfloop transitions, 34 changer transitions 8/386 dead transitions. [2022-09-20 21:38:05,722 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 386 transitions, 2560 flow [2022-09-20 21:38:05,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 21:38:05,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 21:38:05,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1590 transitions. [2022-09-20 21:38:05,725 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.720108695652174 [2022-09-20 21:38:05,725 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1590 transitions. [2022-09-20 21:38:05,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1590 transitions. [2022-09-20 21:38:05,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:38:05,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1590 transitions. [2022-09-20 21:38:05,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.375) internal successors, (1590), 16 states have internal predecessors, (1590), 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 21:38:05,731 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 21:38:05,731 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 21:38:05,731 INFO L175 Difference]: Start difference. First operand has 175 places, 150 transitions, 628 flow. Second operand 16 states and 1590 transitions. [2022-09-20 21:38:05,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 386 transitions, 2560 flow [2022-09-20 21:38:06,411 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 181 places, 386 transitions, 2439 flow, removed 53 selfloop flow, removed 5 redundant places. [2022-09-20 21:38:06,414 INFO L231 Difference]: Finished difference. Result has 194 places, 177 transitions, 994 flow [2022-09-20 21:38:06,414 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=608, PETRI_DIFFERENCE_MINUEND_PLACES=166, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=122, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=994, PETRI_PLACES=194, PETRI_TRANSITIONS=177} [2022-09-20 21:38:06,415 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, 62 predicate places. [2022-09-20 21:38:06,415 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 177 transitions, 994 flow [2022-09-20 21:38:06,415 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 21:38:06,415 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:38:06,415 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] [2022-09-20 21:38:06,415 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 21:38:06,416 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 21:38:06,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:38:06,416 INFO L85 PathProgramCache]: Analyzing trace with hash -15872583, now seen corresponding path program 8 times [2022-09-20 21:38:06,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:38:06,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161754850] [2022-09-20 21:38:06,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:38:06,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:38:06,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:38:07,019 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 21:38:07,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:38:07,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161754850] [2022-09-20 21:38:07,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161754850] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:38:07,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:38:07,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-09-20 21:38:07,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559547317] [2022-09-20 21:38:07,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:38:07,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-20 21:38:07,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:38:07,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-20 21:38:07,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2022-09-20 21:38:07,022 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-09-20 21:38:07,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 177 transitions, 994 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 21:38:07,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:38:07,023 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-09-20 21:38:07,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:38:12,147 INFO L130 PetriNetUnfolder]: 14364/36958 cut-off events. [2022-09-20 21:38:12,148 INFO L131 PetriNetUnfolder]: For 120582/120595 co-relation queries the response was YES. [2022-09-20 21:38:12,521 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119098 conditions, 36958 events. 14364/36958 cut-off events. For 120582/120595 co-relation queries the response was YES. Maximal size of possible extension queue 2579. Compared 459993 event pairs, 5031 based on Foata normal form. 4/36354 useless extension candidates. Maximal degree in co-relation 118348. Up to 9301 conditions per place. [2022-09-20 21:38:12,632 INFO L137 encePairwiseOnDemand]: 120/138 looper letters, 276 selfloop transitions, 43 changer transitions 9/397 dead transitions. [2022-09-20 21:38:12,635 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 397 transitions, 3100 flow [2022-09-20 21:38:12,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 21:38:12,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 21:38:12,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1584 transitions. [2022-09-20 21:38:12,640 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.717391304347826 [2022-09-20 21:38:12,640 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1584 transitions. [2022-09-20 21:38:12,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1584 transitions. [2022-09-20 21:38:12,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:38:12,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1584 transitions. [2022-09-20 21:38:12,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.0) internal successors, (1584), 16 states have internal predecessors, (1584), 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 21:38:12,648 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 21:38:12,648 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 21:38:12,649 INFO L175 Difference]: Start difference. First operand has 194 places, 177 transitions, 994 flow. Second operand 16 states and 1584 transitions. [2022-09-20 21:38:12,649 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 397 transitions, 3100 flow [2022-09-20 21:38:14,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 202 places, 397 transitions, 2989 flow, removed 53 selfloop flow, removed 4 redundant places. [2022-09-20 21:38:14,090 INFO L231 Difference]: Finished difference. Result has 215 places, 200 transitions, 1395 flow [2022-09-20 21:38:14,091 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=953, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=177, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=1395, PETRI_PLACES=215, PETRI_TRANSITIONS=200} [2022-09-20 21:38:14,091 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, 83 predicate places. [2022-09-20 21:38:14,091 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 200 transitions, 1395 flow [2022-09-20 21:38:14,092 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 21:38:14,092 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:38:14,092 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] [2022-09-20 21:38:14,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 21:38:14,092 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 21:38:14,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:38:14,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1125848765, now seen corresponding path program 9 times [2022-09-20 21:38:14,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:38:14,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12948206] [2022-09-20 21:38:14,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:38:14,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:38:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:38:14,746 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 21:38:14,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:38:14,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12948206] [2022-09-20 21:38:14,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12948206] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:38:14,747 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:38:14,747 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-09-20 21:38:14,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1843207355] [2022-09-20 21:38:14,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:38:14,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-20 21:38:14,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:38:14,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-20 21:38:14,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2022-09-20 21:38:14,749 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-09-20 21:38:14,750 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 200 transitions, 1395 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 21:38:14,750 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:38:14,750 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-09-20 21:38:14,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:38:24,894 INFO L130 PetriNetUnfolder]: 26935/71300 cut-off events. [2022-09-20 21:38:24,895 INFO L131 PetriNetUnfolder]: For 362604/362604 co-relation queries the response was YES. [2022-09-20 21:38:25,637 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254522 conditions, 71300 events. 26935/71300 cut-off events. For 362604/362604 co-relation queries the response was YES. Maximal size of possible extension queue 5286. Compared 988755 event pairs, 9156 based on Foata normal form. 1/70158 useless extension candidates. Maximal degree in co-relation 252932. Up to 15618 conditions per place. [2022-09-20 21:38:25,864 INFO L137 encePairwiseOnDemand]: 120/138 looper letters, 326 selfloop transitions, 74 changer transitions 8/477 dead transitions. [2022-09-20 21:38:25,864 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 477 transitions, 4724 flow [2022-09-20 21:38:25,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 21:38:25,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 21:38:25,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1578 transitions. [2022-09-20 21:38:25,882 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7146739130434783 [2022-09-20 21:38:25,882 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1578 transitions. [2022-09-20 21:38:25,882 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1578 transitions. [2022-09-20 21:38:25,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:38:25,883 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1578 transitions. [2022-09-20 21:38:25,885 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.625) internal successors, (1578), 16 states have internal predecessors, (1578), 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 21:38:25,900 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 21:38:25,901 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 21:38:25,901 INFO L175 Difference]: Start difference. First operand has 215 places, 200 transitions, 1395 flow. Second operand 16 states and 1578 transitions. [2022-09-20 21:38:25,901 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 477 transitions, 4724 flow [2022-09-20 21:38:32,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 477 transitions, 4490 flow, removed 107 selfloop flow, removed 5 redundant places. [2022-09-20 21:38:32,191 INFO L231 Difference]: Finished difference. Result has 235 places, 252 transitions, 2323 flow [2022-09-20 21:38:32,192 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=1307, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=200, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=2323, PETRI_PLACES=235, PETRI_TRANSITIONS=252} [2022-09-20 21:38:32,192 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, 103 predicate places. [2022-09-20 21:38:32,192 INFO L495 AbstractCegarLoop]: Abstraction has has 235 places, 252 transitions, 2323 flow [2022-09-20 21:38:32,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 21:38:32,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:38:32,193 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] [2022-09-20 21:38:32,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 21:38:32,193 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 21:38:32,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:38:32,194 INFO L85 PathProgramCache]: Analyzing trace with hash 1328634567, now seen corresponding path program 10 times [2022-09-20 21:38:32,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:38:32,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311847118] [2022-09-20 21:38:32,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:38:32,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:38:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:38:32,864 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 21:38:32,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:38:32,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311847118] [2022-09-20 21:38:32,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1311847118] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:38:32,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:38:32,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-09-20 21:38:32,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036719805] [2022-09-20 21:38:32,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:38:32,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-20 21:38:32,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:38:32,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-20 21:38:32,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=195, Unknown=0, NotChecked=0, Total=240 [2022-09-20 21:38:32,868 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-09-20 21:38:32,869 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 235 places, 252 transitions, 2323 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 21:38:32,869 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:38:32,869 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-09-20 21:38:32,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:38:48,123 INFO L130 PetriNetUnfolder]: 32055/95356 cut-off events. [2022-09-20 21:38:48,124 INFO L131 PetriNetUnfolder]: For 609334/609334 co-relation queries the response was YES. [2022-09-20 21:38:49,423 INFO L83 FinitePrefix]: Finished finitePrefix Result has 348254 conditions, 95356 events. 32055/95356 cut-off events. For 609334/609334 co-relation queries the response was YES. Maximal size of possible extension queue 7112. Compared 1456771 event pairs, 13233 based on Foata normal form. 1/93988 useless extension candidates. Maximal degree in co-relation 345539. Up to 21951 conditions per place. [2022-09-20 21:38:49,716 INFO L137 encePairwiseOnDemand]: 121/138 looper letters, 383 selfloop transitions, 97 changer transitions 8/557 dead transitions. [2022-09-20 21:38:49,716 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 247 places, 557 transitions, 6479 flow [2022-09-20 21:38:49,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 21:38:49,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 21:38:49,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1579 transitions. [2022-09-20 21:38:49,719 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7151268115942029 [2022-09-20 21:38:49,719 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1579 transitions. [2022-09-20 21:38:49,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1579 transitions. [2022-09-20 21:38:49,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:38:49,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1579 transitions. [2022-09-20 21:38:49,722 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 98.6875) internal successors, (1579), 16 states have internal predecessors, (1579), 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 21:38:49,725 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 21:38:49,726 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 21:38:49,726 INFO L175 Difference]: Start difference. First operand has 235 places, 252 transitions, 2323 flow. Second operand 16 states and 1579 transitions. [2022-09-20 21:38:49,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 247 places, 557 transitions, 6479 flow [2022-09-20 21:39:01,107 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 557 transitions, 6229 flow, removed 120 selfloop flow, removed 4 redundant places. [2022-09-20 21:39:01,113 INFO L231 Difference]: Finished difference. Result has 257 places, 323 transitions, 3759 flow [2022-09-20 21:39:01,113 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=138, PETRI_DIFFERENCE_MINUEND_FLOW=2235, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=252, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=169, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3759, PETRI_PLACES=257, PETRI_TRANSITIONS=323} [2022-09-20 21:39:01,113 INFO L287 CegarLoopForPetriNet]: 132 programPoint places, 125 predicate places. [2022-09-20 21:39:01,114 INFO L495 AbstractCegarLoop]: Abstraction has has 257 places, 323 transitions, 3759 flow [2022-09-20 21:39:01,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 21:39:01,114 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:39:01,114 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] [2022-09-20 21:39:01,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-09-20 21:39:01,115 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2022-09-20 21:39:01,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:39:01,115 INFO L85 PathProgramCache]: Analyzing trace with hash 147912135, now seen corresponding path program 11 times [2022-09-20 21:39:01,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:39:01,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [79467038] [2022-09-20 21:39:01,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:39:01,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:39:01,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:39:01,773 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 21:39:01,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:39:01,773 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [79467038] [2022-09-20 21:39:01,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [79467038] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:39:01,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:39:01,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-09-20 21:39:01,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932039291] [2022-09-20 21:39:01,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:39:01,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-09-20 21:39:01,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:39:01,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-09-20 21:39:01,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2022-09-20 21:39:01,775 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 138 [2022-09-20 21:39:01,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 257 places, 323 transitions, 3759 flow. Second operand has 16 states, 16 states have (on average 88.0) internal successors, (1408), 16 states have internal predecessors, (1408), 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 21:39:01,777 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:39:01,777 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 138 [2022-09-20 21:39:01,777 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:39:21,326 INFO L130 PetriNetUnfolder]: 37727/118978 cut-off events. [2022-09-20 21:39:21,326 INFO L131 PetriNetUnfolder]: For 953198/953227 co-relation queries the response was YES. [2022-09-20 21:39:23,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 458079 conditions, 118978 events. 37727/118978 cut-off events. For 953198/953227 co-relation queries the response was YES. Maximal size of possible extension queue 9229. Compared 1925724 event pairs, 16981 based on Foata normal form. 1/116935 useless extension candidates. Maximal degree in co-relation 453833. Up to 24683 conditions per place. [2022-09-20 21:39:23,623 INFO L137 encePairwiseOnDemand]: 119/138 looper letters, 561 selfloop transitions, 147 changer transitions 9/786 dead transitions. [2022-09-20 21:39:23,624 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 786 transitions, 11138 flow [2022-09-20 21:39:23,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 21:39:23,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 21:39:23,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1597 transitions. [2022-09-20 21:39:23,639 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7232789855072463 [2022-09-20 21:39:23,639 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1597 transitions. [2022-09-20 21:39:23,639 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1597 transitions. [2022-09-20 21:39:23,640 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:39:23,640 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1597 transitions. [2022-09-20 21:39:23,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 99.8125) internal successors, (1597), 16 states have internal predecessors, (1597), 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 21:39:23,644 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 21:39:23,645 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 138.0) internal successors, (2346), 17 states have internal predecessors, (2346), 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 21:39:23,645 INFO L175 Difference]: Start difference. First operand has 257 places, 323 transitions, 3759 flow. Second operand 16 states and 1597 transitions. [2022-09-20 21:39:23,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 786 transitions, 11138 flow