/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/popl20-bad-three-array-sum-alt.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 21:06:35,668 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 21:06:35,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 21:06:35,689 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 21:06:35,689 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 21:06:35,690 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 21:06:35,690 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 21:06:35,692 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 21:06:35,693 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 21:06:35,693 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 21:06:35,694 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 21:06:35,695 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 21:06:35,695 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 21:06:35,696 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 21:06:35,696 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 21:06:35,697 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 21:06:35,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 21:06:35,698 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 21:06:35,699 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 21:06:35,700 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 21:06:35,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 21:06:35,702 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 21:06:35,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 21:06:35,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 21:06:35,705 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 21:06:35,705 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 21:06:35,705 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 21:06:35,706 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 21:06:35,706 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 21:06:35,707 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 21:06:35,707 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 21:06:35,707 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 21:06:35,708 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 21:06:35,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 21:06:35,709 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 21:06:35,709 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 21:06:35,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 21:06:35,710 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 21:06:35,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 21:06:35,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 21:06:35,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 21:06:35,711 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 21:06:35,724 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 21:06:35,725 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 21:06:35,725 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 21:06:35,725 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 21:06:35,726 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 21:06:35,726 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 21:06:35,726 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 21:06:35,726 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 21:06:35,726 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 21:06:35,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 21:06:35,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 21:06:35,726 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 21:06:35,727 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 21:06:35,727 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 21:06:35,727 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 21:06:35,727 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 21:06:35,727 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 21:06:35,727 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 21:06:35,727 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 21:06:35,727 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 21:06:35,728 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 21:06:35,728 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 21:06:35,728 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 21:06:35,728 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:06:35,728 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 21:06:35,728 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 21:06:35,728 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 21:06:35,728 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 21:06:35,729 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 21:06:35,729 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 21:06:35,729 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 21:06:35,729 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 21:06:35,905 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 21:06:35,921 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 21:06:35,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 21:06:35,923 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 21:06:35,923 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 21:06:35,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/popl20-bad-three-array-sum-alt.wvr.c [2022-09-20 21:06:35,964 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48ccb432e/09995ca91e6b4fcd8f02896602009916/FLAG40f6f0b66 [2022-09-20 21:06:36,392 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 21:06:36,392 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/popl20-bad-three-array-sum-alt.wvr.c [2022-09-20 21:06:36,404 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48ccb432e/09995ca91e6b4fcd8f02896602009916/FLAG40f6f0b66 [2022-09-20 21:06:36,787 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/48ccb432e/09995ca91e6b4fcd8f02896602009916 [2022-09-20 21:06:36,789 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 21:06:36,790 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 21:06:36,791 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 21:06:36,791 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 21:06:36,797 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 21:06:36,797 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:06:36" (1/1) ... [2022-09-20 21:06:36,798 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cd02bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:06:36, skipping insertion in model container [2022-09-20 21:06:36,798 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 09:06:36" (1/1) ... [2022-09-20 21:06:36,803 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 21:06:36,814 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 21:06:36,946 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/popl20-bad-three-array-sum-alt.wvr.c[2412,2425] [2022-09-20 21:06:36,974 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:06:36,984 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 21:06:37,009 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/popl20-bad-three-array-sum-alt.wvr.c[2412,2425] [2022-09-20 21:06:37,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 21:06:37,024 INFO L208 MainTranslator]: Completed translation [2022-09-20 21:06:37,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:06:37 WrapperNode [2022-09-20 21:06:37,024 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 21:06:37,025 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 21:06:37,025 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 21:06:37,025 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 21:06:37,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:06:37" (1/1) ... [2022-09-20 21:06:37,049 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:06:37" (1/1) ... [2022-09-20 21:06:37,086 INFO L138 Inliner]: procedures = 26, calls = 45, calls flagged for inlining = 15, calls inlined = 27, statements flattened = 271 [2022-09-20 21:06:37,086 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 21:06:37,087 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 21:06:37,087 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 21:06:37,087 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 21:06:37,096 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:06:37" (1/1) ... [2022-09-20 21:06:37,096 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:06:37" (1/1) ... [2022-09-20 21:06:37,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:06:37" (1/1) ... [2022-09-20 21:06:37,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:06:37" (1/1) ... [2022-09-20 21:06:37,111 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:06:37" (1/1) ... [2022-09-20 21:06:37,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:06:37" (1/1) ... [2022-09-20 21:06:37,126 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:06:37" (1/1) ... [2022-09-20 21:06:37,128 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 21:06:37,129 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 21:06:37,129 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 21:06:37,129 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 21:06:37,134 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:06:37" (1/1) ... [2022-09-20 21:06:37,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 21:06:37,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:06:37,186 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 21:06:37,231 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 21:06:37,249 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 21:06:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 21:06:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 21:06:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 21:06:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 21:06:37,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 21:06:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 21:06:37,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 21:06:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 21:06:37,250 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 21:06:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 21:06:37,250 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-09-20 21:06:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 21:06:37,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 21:06:37,251 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 21:06:37,252 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 21:06:37,325 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 21:06:37,327 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 21:06:37,710 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 21:06:37,718 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 21:06:37,718 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-09-20 21:06:37,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:06:37 BoogieIcfgContainer [2022-09-20 21:06:37,720 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 21:06:37,726 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 21:06:37,726 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 21:06:37,729 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 21:06:37,729 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 09:06:36" (1/3) ... [2022-09-20 21:06:37,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196bb4f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:06:37, skipping insertion in model container [2022-09-20 21:06:37,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 09:06:37" (2/3) ... [2022-09-20 21:06:37,730 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@196bb4f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 09:06:37, skipping insertion in model container [2022-09-20 21:06:37,730 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 09:06:37" (3/3) ... [2022-09-20 21:06:37,731 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-bad-three-array-sum-alt.wvr.c [2022-09-20 21:06:37,743 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 21:06:37,743 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 21:06:37,743 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 21:06:37,846 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-20 21:06:37,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 349 places, 368 transitions, 760 flow [2022-09-20 21:06:37,960 INFO L130 PetriNetUnfolder]: 29/365 cut-off events. [2022-09-20 21:06:37,960 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 21:06:37,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 378 conditions, 365 events. 29/365 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 517 event pairs, 0 based on Foata normal form. 0/335 useless extension candidates. Maximal degree in co-relation 239. Up to 2 conditions per place. [2022-09-20 21:06:37,973 INFO L82 GeneralOperation]: Start removeDead. Operand has 349 places, 368 transitions, 760 flow [2022-09-20 21:06:37,978 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 335 places, 354 transitions, 726 flow [2022-09-20 21:06:37,996 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 21:06:38,001 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;@59c49283, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 21:06:38,002 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-20 21:06:38,040 INFO L130 PetriNetUnfolder]: 28/346 cut-off events. [2022-09-20 21:06:38,041 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 21:06:38,041 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:06:38,042 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:06:38,042 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:06:38,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:06:38,045 INFO L85 PathProgramCache]: Analyzing trace with hash 921002684, now seen corresponding path program 1 times [2022-09-20 21:06:38,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:06:38,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1941349284] [2022-09-20 21:06:38,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:38,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:06:38,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:38,272 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 21:06:38,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:06:38,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1941349284] [2022-09-20 21:06:38,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1941349284] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:06:38,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:06:38,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-09-20 21:06:38,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367766362] [2022-09-20 21:06:38,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:06:38,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-09-20 21:06:38,282 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:06:38,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-09-20 21:06:38,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-09-20 21:06:38,308 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 368 [2022-09-20 21:06:38,314 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 335 places, 354 transitions, 726 flow. Second operand has 2 states, 2 states have (on average 343.0) internal successors, (686), 2 states have internal predecessors, (686), 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 21:06:38,314 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:06:38,314 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 368 [2022-09-20 21:06:38,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:06:38,369 INFO L130 PetriNetUnfolder]: 6/331 cut-off events. [2022-09-20 21:06:38,369 INFO L131 PetriNetUnfolder]: For 12/12 co-relation queries the response was YES. [2022-09-20 21:06:38,372 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 331 events. 6/331 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 472 event pairs, 0 based on Foata normal form. 29/337 useless extension candidates. Maximal degree in co-relation 226. Up to 7 conditions per place. [2022-09-20 21:06:38,374 INFO L137 encePairwiseOnDemand]: 345/368 looper letters, 6 selfloop transitions, 0 changer transitions 9/331 dead transitions. [2022-09-20 21:06:38,374 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 331 transitions, 692 flow [2022-09-20 21:06:38,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-09-20 21:06:38,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-09-20 21:06:38,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 705 transitions. [2022-09-20 21:06:38,388 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9578804347826086 [2022-09-20 21:06:38,388 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 705 transitions. [2022-09-20 21:06:38,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 705 transitions. [2022-09-20 21:06:38,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:06:38,393 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 705 transitions. [2022-09-20 21:06:38,397 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 352.5) internal successors, (705), 2 states have internal predecessors, (705), 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 21:06:38,403 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 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 21:06:38,404 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 368.0) internal successors, (1104), 3 states have internal predecessors, (1104), 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 21:06:38,405 INFO L175 Difference]: Start difference. First operand has 335 places, 354 transitions, 726 flow. Second operand 2 states and 705 transitions. [2022-09-20 21:06:38,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 336 places, 331 transitions, 692 flow [2022-09-20 21:06:38,410 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 330 places, 331 transitions, 680 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-20 21:06:38,417 INFO L231 Difference]: Finished difference. Result has 330 places, 322 transitions, 650 flow [2022-09-20 21:06:38,419 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=668, PETRI_DIFFERENCE_MINUEND_PLACES=329, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=331, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=331, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=650, PETRI_PLACES=330, PETRI_TRANSITIONS=322} [2022-09-20 21:06:38,424 INFO L287 CegarLoopForPetriNet]: 335 programPoint places, -5 predicate places. [2022-09-20 21:06:38,424 INFO L495 AbstractCegarLoop]: Abstraction has has 330 places, 322 transitions, 650 flow [2022-09-20 21:06:38,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 343.0) internal successors, (686), 2 states have internal predecessors, (686), 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 21:06:38,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:06:38,425 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 21:06:38,425 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 21:06:38,425 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:06:38,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:06:38,427 INFO L85 PathProgramCache]: Analyzing trace with hash -651043350, now seen corresponding path program 1 times [2022-09-20 21:06:38,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:06:38,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754548810] [2022-09-20 21:06:38,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:38,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:06:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:38,861 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 21:06:38,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:06:38,861 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754548810] [2022-09-20 21:06:38,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754548810] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:06:38,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:06:38,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-09-20 21:06:38,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577642297] [2022-09-20 21:06:38,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:06:38,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-09-20 21:06:38,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:06:38,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-09-20 21:06:38,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-09-20 21:06:38,867 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 274 out of 368 [2022-09-20 21:06:38,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 322 transitions, 650 flow. Second operand has 12 states, 12 states have (on average 278.5833333333333) internal successors, (3343), 12 states have internal predecessors, (3343), 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 21:06:38,870 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:06:38,870 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 274 of 368 [2022-09-20 21:06:38,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:06:39,519 INFO L130 PetriNetUnfolder]: 189/2612 cut-off events. [2022-09-20 21:06:39,521 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-09-20 21:06:39,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3031 conditions, 2612 events. 189/2612 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 19447 event pairs, 34 based on Foata normal form. 1/2422 useless extension candidates. Maximal degree in co-relation 3028. Up to 155 conditions per place. [2022-09-20 21:06:39,547 INFO L137 encePairwiseOnDemand]: 354/368 looper letters, 123 selfloop transitions, 9 changer transitions 20/413 dead transitions. [2022-09-20 21:06:39,548 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 332 places, 413 transitions, 1148 flow [2022-09-20 21:06:39,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-20 21:06:39,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-20 21:06:39,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 3441 transitions. [2022-09-20 21:06:39,553 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7792119565217391 [2022-09-20 21:06:39,553 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 3441 transitions. [2022-09-20 21:06:39,553 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 3441 transitions. [2022-09-20 21:06:39,555 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:06:39,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 3441 transitions. [2022-09-20 21:06:39,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 286.75) internal successors, (3441), 12 states have internal predecessors, (3441), 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 21:06:39,566 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 368.0) internal successors, (4784), 13 states have internal predecessors, (4784), 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 21:06:39,568 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 368.0) internal successors, (4784), 13 states have internal predecessors, (4784), 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 21:06:39,568 INFO L175 Difference]: Start difference. First operand has 330 places, 322 transitions, 650 flow. Second operand 12 states and 3441 transitions. [2022-09-20 21:06:39,568 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 332 places, 413 transitions, 1148 flow [2022-09-20 21:06:39,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 332 places, 413 transitions, 1148 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-09-20 21:06:39,576 INFO L231 Difference]: Finished difference. Result has 341 places, 328 transitions, 713 flow [2022-09-20 21:06:39,576 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=650, PETRI_DIFFERENCE_MINUEND_PLACES=321, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=316, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=713, PETRI_PLACES=341, PETRI_TRANSITIONS=328} [2022-09-20 21:06:39,577 INFO L287 CegarLoopForPetriNet]: 335 programPoint places, 6 predicate places. [2022-09-20 21:06:39,577 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 328 transitions, 713 flow [2022-09-20 21:06:39,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 278.5833333333333) internal successors, (3343), 12 states have internal predecessors, (3343), 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 21:06:39,578 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:06:39,579 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:39,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 21:06:39,579 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:06:39,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:06:39,580 INFO L85 PathProgramCache]: Analyzing trace with hash -1788748680, now seen corresponding path program 1 times [2022-09-20 21:06:39,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:06:39,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1442073327] [2022-09-20 21:06:39,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:39,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:06:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:39,734 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:06:39,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:06:39,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1442073327] [2022-09-20 21:06:39,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1442073327] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:06:39,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:06:39,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 21:06:39,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134768519] [2022-09-20 21:06:39,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:06:39,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 21:06:39,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:06:39,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 21:06:39,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-20 21:06:39,741 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 368 [2022-09-20 21:06:39,743 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 328 transitions, 713 flow. Second operand has 7 states, 7 states have (on average 295.7142857142857) internal successors, (2070), 7 states have internal predecessors, (2070), 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 21:06:39,743 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:06:39,743 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 368 [2022-09-20 21:06:39,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:06:40,681 INFO L130 PetriNetUnfolder]: 994/5924 cut-off events. [2022-09-20 21:06:40,681 INFO L131 PetriNetUnfolder]: For 168/168 co-relation queries the response was YES. [2022-09-20 21:06:40,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7857 conditions, 5924 events. 994/5924 cut-off events. For 168/168 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 51105 event pairs, 395 based on Foata normal form. 0/5002 useless extension candidates. Maximal degree in co-relation 7844. Up to 852 conditions per place. [2022-09-20 21:06:40,720 INFO L137 encePairwiseOnDemand]: 349/368 looper letters, 113 selfloop transitions, 28 changer transitions 0/415 dead transitions. [2022-09-20 21:06:40,721 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 415 transitions, 1185 flow [2022-09-20 21:06:40,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 21:06:40,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 21:06:40,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3333 transitions. [2022-09-20 21:06:40,726 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8233695652173914 [2022-09-20 21:06:40,726 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3333 transitions. [2022-09-20 21:06:40,726 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3333 transitions. [2022-09-20 21:06:40,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:06:40,727 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3333 transitions. [2022-09-20 21:06:40,732 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 303.0) internal successors, (3333), 11 states have internal predecessors, (3333), 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 21:06:40,738 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 368.0) internal successors, (4416), 12 states have internal predecessors, (4416), 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 21:06:40,739 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 368.0) internal successors, (4416), 12 states have internal predecessors, (4416), 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 21:06:40,739 INFO L175 Difference]: Start difference. First operand has 341 places, 328 transitions, 713 flow. Second operand 11 states and 3333 transitions. [2022-09-20 21:06:40,739 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 415 transitions, 1185 flow [2022-09-20 21:06:40,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 337 places, 415 transitions, 1171 flow, removed 7 selfloop flow, removed 7 redundant places. [2022-09-20 21:06:40,747 INFO L231 Difference]: Finished difference. Result has 341 places, 345 transitions, 832 flow [2022-09-20 21:06:40,748 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=699, PETRI_DIFFERENCE_MINUEND_PLACES=327, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=328, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=310, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=832, PETRI_PLACES=341, PETRI_TRANSITIONS=345} [2022-09-20 21:06:40,749 INFO L287 CegarLoopForPetriNet]: 335 programPoint places, 6 predicate places. [2022-09-20 21:06:40,749 INFO L495 AbstractCegarLoop]: Abstraction has has 341 places, 345 transitions, 832 flow [2022-09-20 21:06:40,750 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 295.7142857142857) internal successors, (2070), 7 states have internal predecessors, (2070), 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 21:06:40,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:06:40,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:40,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 21:06:40,751 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:06:40,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:06:40,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1785723984, now seen corresponding path program 1 times [2022-09-20 21:06:40,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:06:40,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728527239] [2022-09-20 21:06:40,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:40,752 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:06:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:40,844 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:06:40,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:06:40,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728527239] [2022-09-20 21:06:40,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728527239] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:06:40,845 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:06:40,845 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 21:06:40,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117458138] [2022-09-20 21:06:40,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:06:40,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 21:06:40,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:06:40,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 21:06:40,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-20 21:06:40,850 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 368 [2022-09-20 21:06:40,851 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 341 places, 345 transitions, 832 flow. Second operand has 7 states, 7 states have (on average 295.7142857142857) internal successors, (2070), 7 states have internal predecessors, (2070), 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 21:06:40,851 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:06:40,851 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 368 [2022-09-20 21:06:40,851 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:06:41,564 INFO L130 PetriNetUnfolder]: 821/5478 cut-off events. [2022-09-20 21:06:41,564 INFO L131 PetriNetUnfolder]: For 564/600 co-relation queries the response was YES. [2022-09-20 21:06:41,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7311 conditions, 5478 events. 821/5478 cut-off events. For 564/600 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 46395 event pairs, 507 based on Foata normal form. 36/4847 useless extension candidates. Maximal degree in co-relation 7300. Up to 965 conditions per place. [2022-09-20 21:06:41,602 INFO L137 encePairwiseOnDemand]: 349/368 looper letters, 109 selfloop transitions, 28 changer transitions 0/413 dead transitions. [2022-09-20 21:06:41,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 351 places, 413 transitions, 1274 flow [2022-09-20 21:06:41,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 21:06:41,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 21:06:41,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3329 transitions. [2022-09-20 21:06:41,607 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8223814229249012 [2022-09-20 21:06:41,607 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3329 transitions. [2022-09-20 21:06:41,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3329 transitions. [2022-09-20 21:06:41,609 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:06:41,609 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3329 transitions. [2022-09-20 21:06:41,613 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 302.6363636363636) internal successors, (3329), 11 states have internal predecessors, (3329), 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 21:06:41,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 368.0) internal successors, (4416), 12 states have internal predecessors, (4416), 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 21:06:41,618 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 368.0) internal successors, (4416), 12 states have internal predecessors, (4416), 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 21:06:41,618 INFO L175 Difference]: Start difference. First operand has 341 places, 345 transitions, 832 flow. Second operand 11 states and 3329 transitions. [2022-09-20 21:06:41,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 351 places, 413 transitions, 1274 flow [2022-09-20 21:06:41,622 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 349 places, 413 transitions, 1269 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 21:06:41,625 INFO L231 Difference]: Finished difference. Result has 351 places, 347 transitions, 895 flow [2022-09-20 21:06:41,625 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=827, PETRI_DIFFERENCE_MINUEND_PLACES=339, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=318, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=895, PETRI_PLACES=351, PETRI_TRANSITIONS=347} [2022-09-20 21:06:41,626 INFO L287 CegarLoopForPetriNet]: 335 programPoint places, 16 predicate places. [2022-09-20 21:06:41,626 INFO L495 AbstractCegarLoop]: Abstraction has has 351 places, 347 transitions, 895 flow [2022-09-20 21:06:41,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 295.7142857142857) internal successors, (2070), 7 states have internal predecessors, (2070), 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 21:06:41,627 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:06:41,627 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:41,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 21:06:41,627 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:06:41,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:06:41,628 INFO L85 PathProgramCache]: Analyzing trace with hash 1875331565, now seen corresponding path program 1 times [2022-09-20 21:06:41,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:06:41,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133310081] [2022-09-20 21:06:41,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:41,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:06:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:41,710 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 21:06:41,711 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:06:41,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133310081] [2022-09-20 21:06:41,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133310081] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:06:41,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370677274] [2022-09-20 21:06:41,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:41,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:06:41,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:06:41,718 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:06:41,723 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-09-20 21:06:41,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:41,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 486 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 21:06:41,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:06:42,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 21:06:42,081 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:06:42,319 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 21:06:42,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370677274] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 21:06:42,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 21:06:42,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-09-20 21:06:42,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106930756] [2022-09-20 21:06:42,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:06:42,320 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 21:06:42,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:06:42,321 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 21:06:42,321 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-09-20 21:06:42,322 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 368 [2022-09-20 21:06:42,323 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 351 places, 347 transitions, 895 flow. Second operand has 7 states, 7 states have (on average 294.0) internal successors, (2058), 7 states have internal predecessors, (2058), 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 21:06:42,323 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:06:42,323 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 368 [2022-09-20 21:06:42,324 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:06:43,458 INFO L130 PetriNetUnfolder]: 1271/9246 cut-off events. [2022-09-20 21:06:43,458 INFO L131 PetriNetUnfolder]: For 1679/1919 co-relation queries the response was YES. [2022-09-20 21:06:43,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12456 conditions, 9246 events. 1271/9246 cut-off events. For 1679/1919 co-relation queries the response was YES. Maximal size of possible extension queue 143. Compared 92730 event pairs, 256 based on Foata normal form. 239/8806 useless extension candidates. Maximal degree in co-relation 12443. Up to 1314 conditions per place. [2022-09-20 21:06:43,501 INFO L137 encePairwiseOnDemand]: 352/368 looper letters, 99 selfloop transitions, 17 changer transitions 0/391 dead transitions. [2022-09-20 21:06:43,502 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 358 places, 391 transitions, 1251 flow [2022-09-20 21:06:43,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 21:06:43,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 21:06:43,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 2402 transitions. [2022-09-20 21:06:43,506 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8158967391304348 [2022-09-20 21:06:43,506 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 2402 transitions. [2022-09-20 21:06:43,506 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 2402 transitions. [2022-09-20 21:06:43,507 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:06:43,507 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 2402 transitions. [2022-09-20 21:06:43,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 300.25) internal successors, (2402), 8 states have internal predecessors, (2402), 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 21:06:43,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 368.0) internal successors, (3312), 9 states have internal predecessors, (3312), 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 21:06:43,515 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 368.0) internal successors, (3312), 9 states have internal predecessors, (3312), 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 21:06:43,515 INFO L175 Difference]: Start difference. First operand has 351 places, 347 transitions, 895 flow. Second operand 8 states and 2402 transitions. [2022-09-20 21:06:43,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 358 places, 391 transitions, 1251 flow [2022-09-20 21:06:43,522 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 353 places, 391 transitions, 1224 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-20 21:06:43,527 INFO L231 Difference]: Finished difference. Result has 358 places, 357 transitions, 985 flow [2022-09-20 21:06:43,527 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=870, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=347, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=332, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=985, PETRI_PLACES=358, PETRI_TRANSITIONS=357} [2022-09-20 21:06:43,528 INFO L287 CegarLoopForPetriNet]: 335 programPoint places, 23 predicate places. [2022-09-20 21:06:43,528 INFO L495 AbstractCegarLoop]: Abstraction has has 358 places, 357 transitions, 985 flow [2022-09-20 21:06:43,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 294.0) internal successors, (2058), 7 states have internal predecessors, (2058), 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 21:06:43,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:06:43,529 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:43,548 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-09-20 21:06:43,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:06:43,744 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:06:43,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:06:43,744 INFO L85 PathProgramCache]: Analyzing trace with hash -2047508188, now seen corresponding path program 1 times [2022-09-20 21:06:43,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:06:43,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [248619952] [2022-09-20 21:06:43,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:43,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:06:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:43,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:06:43,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:06:43,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [248619952] [2022-09-20 21:06:43,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [248619952] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 21:06:43,824 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 21:06:43,824 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 21:06:43,825 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361671489] [2022-09-20 21:06:43,825 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:06:43,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 21:06:43,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:06:43,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 21:06:43,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-09-20 21:06:43,827 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 287 out of 368 [2022-09-20 21:06:43,828 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 358 places, 357 transitions, 985 flow. Second operand has 7 states, 7 states have (on average 293.14285714285717) internal successors, (2052), 7 states have internal predecessors, (2052), 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 21:06:43,828 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:06:43,828 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 287 of 368 [2022-09-20 21:06:43,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:06:44,669 INFO L130 PetriNetUnfolder]: 927/5714 cut-off events. [2022-09-20 21:06:44,669 INFO L131 PetriNetUnfolder]: For 1754/1799 co-relation queries the response was YES. [2022-09-20 21:06:44,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8598 conditions, 5714 events. 927/5714 cut-off events. For 1754/1799 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 49161 event pairs, 655 based on Foata normal form. 65/5343 useless extension candidates. Maximal degree in co-relation 8580. Up to 1322 conditions per place. [2022-09-20 21:06:44,713 INFO L137 encePairwiseOnDemand]: 349/368 looper letters, 56 selfloop transitions, 14 changer transitions 74/415 dead transitions. [2022-09-20 21:06:44,713 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 367 places, 415 transitions, 1426 flow [2022-09-20 21:06:44,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-09-20 21:06:44,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-09-20 21:06:44,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3293 transitions. [2022-09-20 21:06:44,719 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8134881422924901 [2022-09-20 21:06:44,719 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3293 transitions. [2022-09-20 21:06:44,719 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3293 transitions. [2022-09-20 21:06:44,720 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:06:44,720 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3293 transitions. [2022-09-20 21:06:44,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 299.3636363636364) internal successors, (3293), 11 states have internal predecessors, (3293), 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 21:06:44,729 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 368.0) internal successors, (4416), 12 states have internal predecessors, (4416), 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 21:06:44,729 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 368.0) internal successors, (4416), 12 states have internal predecessors, (4416), 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 21:06:44,729 INFO L175 Difference]: Start difference. First operand has 358 places, 357 transitions, 985 flow. Second operand 11 states and 3293 transitions. [2022-09-20 21:06:44,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 367 places, 415 transitions, 1426 flow [2022-09-20 21:06:44,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 366 places, 415 transitions, 1425 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 21:06:44,736 INFO L231 Difference]: Finished difference. Result has 370 places, 333 transitions, 849 flow [2022-09-20 21:06:44,737 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=974, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=849, PETRI_PLACES=370, PETRI_TRANSITIONS=333} [2022-09-20 21:06:44,737 INFO L287 CegarLoopForPetriNet]: 335 programPoint places, 35 predicate places. [2022-09-20 21:06:44,737 INFO L495 AbstractCegarLoop]: Abstraction has has 370 places, 333 transitions, 849 flow [2022-09-20 21:06:44,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 293.14285714285717) internal successors, (2052), 7 states have internal predecessors, (2052), 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 21:06:44,738 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:06:44,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:44,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 21:06:44,738 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:06:44,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:06:44,739 INFO L85 PathProgramCache]: Analyzing trace with hash -335567163, now seen corresponding path program 1 times [2022-09-20 21:06:44,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:06:44,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91782925] [2022-09-20 21:06:44,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:44,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:06:44,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:44,814 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 21:06:44,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:06:44,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91782925] [2022-09-20 21:06:44,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91782925] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:06:44,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692015083] [2022-09-20 21:06:44,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:44,815 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:06:44,816 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:06:44,817 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:06:44,818 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-09-20 21:06:44,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:44,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 531 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 21:06:44,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:06:45,053 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 21:06:45,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:06:45,215 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 21:06:45,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692015083] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 21:06:45,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 21:06:45,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-09-20 21:06:45,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854236402] [2022-09-20 21:06:45,216 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:06:45,216 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 21:06:45,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:06:45,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 21:06:45,217 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-09-20 21:06:45,218 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 368 [2022-09-20 21:06:45,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 370 places, 333 transitions, 849 flow. Second operand has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 21:06:45,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:06:45,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 368 [2022-09-20 21:06:45,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:06:45,587 INFO L130 PetriNetUnfolder]: 453/2812 cut-off events. [2022-09-20 21:06:45,587 INFO L131 PetriNetUnfolder]: For 1082/1169 co-relation queries the response was YES. [2022-09-20 21:06:45,604 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4391 conditions, 2812 events. 453/2812 cut-off events. For 1082/1169 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 18235 event pairs, 74 based on Foata normal form. 113/2634 useless extension candidates. Maximal degree in co-relation 4369. Up to 401 conditions per place. [2022-09-20 21:06:45,610 INFO L137 encePairwiseOnDemand]: 360/368 looper letters, 60 selfloop transitions, 7 changer transitions 0/341 dead transitions. [2022-09-20 21:06:45,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 362 places, 341 transitions, 1021 flow [2022-09-20 21:06:45,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 21:06:45,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 21:06:45,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2093 transitions. [2022-09-20 21:06:45,614 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8125 [2022-09-20 21:06:45,614 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2093 transitions. [2022-09-20 21:06:45,614 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2093 transitions. [2022-09-20 21:06:45,615 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:06:45,615 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2093 transitions. [2022-09-20 21:06:45,618 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 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 21:06:45,620 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 368.0) internal successors, (2944), 8 states have internal predecessors, (2944), 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 21:06:45,621 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 368.0) internal successors, (2944), 8 states have internal predecessors, (2944), 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 21:06:45,621 INFO L175 Difference]: Start difference. First operand has 370 places, 333 transitions, 849 flow. Second operand 7 states and 2093 transitions. [2022-09-20 21:06:45,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 362 places, 341 transitions, 1021 flow [2022-09-20 21:06:45,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 340 places, 341 transitions, 910 flow, removed 21 selfloop flow, removed 22 redundant places. [2022-09-20 21:06:45,627 INFO L231 Difference]: Finished difference. Result has 342 places, 334 transitions, 778 flow [2022-09-20 21:06:45,627 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=751, PETRI_DIFFERENCE_MINUEND_PLACES=334, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=333, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=326, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=778, PETRI_PLACES=342, PETRI_TRANSITIONS=334} [2022-09-20 21:06:45,628 INFO L287 CegarLoopForPetriNet]: 335 programPoint places, 7 predicate places. [2022-09-20 21:06:45,628 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 334 transitions, 778 flow [2022-09-20 21:06:45,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 297.0) internal successors, (2079), 7 states have internal predecessors, (2079), 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 21:06:45,628 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:06:45,628 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:45,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-09-20 21:06:45,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-09-20 21:06:45,846 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:06:45,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:06:45,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1588206189, now seen corresponding path program 1 times [2022-09-20 21:06:45,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:06:45,846 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513580262] [2022-09-20 21:06:45,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:45,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:06:45,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:45,963 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 21:06:45,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:06:45,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513580262] [2022-09-20 21:06:45,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513580262] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:06:45,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893898749] [2022-09-20 21:06:45,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:45,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:06:45,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:06:45,984 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:06:45,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-09-20 21:06:46,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:46,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 577 conjuncts, 6 conjunts are in the unsatisfiable core [2022-09-20 21:06:46,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:06:46,328 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 21:06:46,328 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:06:46,594 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 21:06:46,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893898749] provided 1 perfect and 1 imperfect interpolant sequences [2022-09-20 21:06:46,595 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-09-20 21:06:46,595 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-09-20 21:06:46,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671711801] [2022-09-20 21:06:46,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 21:06:46,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 21:06:46,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:06:46,596 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 21:06:46,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-09-20 21:06:46,597 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 290 out of 368 [2022-09-20 21:06:46,598 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 334 transitions, 778 flow. Second operand has 7 states, 7 states have (on average 297.14285714285717) internal successors, (2080), 7 states have internal predecessors, (2080), 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 21:06:46,598 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:06:46,598 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 290 of 368 [2022-09-20 21:06:46,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 21:06:47,025 INFO L130 PetriNetUnfolder]: 357/3660 cut-off events. [2022-09-20 21:06:47,025 INFO L131 PetriNetUnfolder]: For 538/710 co-relation queries the response was YES. [2022-09-20 21:06:47,047 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4811 conditions, 3660 events. 357/3660 cut-off events. For 538/710 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 29199 event pairs, 133 based on Foata normal form. 171/3541 useless extension candidates. Maximal degree in co-relation 4799. Up to 330 conditions per place. [2022-09-20 21:06:47,058 INFO L137 encePairwiseOnDemand]: 360/368 looper letters, 62 selfloop transitions, 7 changer transitions 0/343 dead transitions. [2022-09-20 21:06:47,058 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 343 transitions, 951 flow [2022-09-20 21:06:47,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 21:06:47,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 21:06:47,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2093 transitions. [2022-09-20 21:06:47,062 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8125 [2022-09-20 21:06:47,062 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2093 transitions. [2022-09-20 21:06:47,062 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2093 transitions. [2022-09-20 21:06:47,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 21:06:47,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2093 transitions. [2022-09-20 21:06:47,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 299.0) internal successors, (2093), 7 states have internal predecessors, (2093), 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 21:06:47,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 368.0) internal successors, (2944), 8 states have internal predecessors, (2944), 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 21:06:47,069 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 368.0) internal successors, (2944), 8 states have internal predecessors, (2944), 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 21:06:47,069 INFO L175 Difference]: Start difference. First operand has 342 places, 334 transitions, 778 flow. Second operand 7 states and 2093 transitions. [2022-09-20 21:06:47,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 343 transitions, 951 flow [2022-09-20 21:06:47,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 343 places, 343 transitions, 940 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-09-20 21:06:47,075 INFO L231 Difference]: Finished difference. Result has 345 places, 335 transitions, 795 flow [2022-09-20 21:06:47,075 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=368, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=327, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=795, PETRI_PLACES=345, PETRI_TRANSITIONS=335} [2022-09-20 21:06:47,075 INFO L287 CegarLoopForPetriNet]: 335 programPoint places, 10 predicate places. [2022-09-20 21:06:47,075 INFO L495 AbstractCegarLoop]: Abstraction has has 345 places, 335 transitions, 795 flow [2022-09-20 21:06:47,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 297.14285714285717) internal successors, (2080), 7 states have internal predecessors, (2080), 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 21:06:47,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 21:06:47,076 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:06:47,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-09-20 21:06:47,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:06:47,294 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 21:06:47,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 21:06:47,294 INFO L85 PathProgramCache]: Analyzing trace with hash 856971819, now seen corresponding path program 1 times [2022-09-20 21:06:47,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 21:06:47,294 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474842537] [2022-09-20 21:06:47,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:47,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 21:06:47,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:49,216 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-09-20 21:06:49,217 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 21:06:49,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474842537] [2022-09-20 21:06:49,217 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474842537] provided 0 perfect and 1 imperfect interpolant sequences [2022-09-20 21:06:49,217 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [780729277] [2022-09-20 21:06:49,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 21:06:49,217 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-09-20 21:06:49,217 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 21:06:49,218 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-09-20 21:06:49,226 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-09-20 21:06:49,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 21:06:49,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 623 conjuncts, 156 conjunts are in the unsatisfiable core [2022-09-20 21:06:49,362 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-09-20 21:06:50,182 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:06:50,533 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-09-20 21:06:51,219 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-09-20 21:06:51,220 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-09-20 21:06:51,438 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:06:52,070 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-09-20 21:06:52,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-09-20 21:06:52,293 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:06:52,505 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:06:52,631 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:06:52,755 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-09-20 21:06:55,144 INFO L173 IndexEqualityManager]: detected equality via solver [2022-09-20 21:06:55,179 INFO L356 Elim1Store]: treesize reduction 207, result has 21.6 percent of original size [2022-09-20 21:06:55,180 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 10 case distinctions, treesize of input 46 treesize of output 76 [2022-09-20 21:07:10,397 WARN L233 SmtUtils]: Spent 14.93s on a formula simplification. DAG size of input: 62 DAG size of output: 54 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-09-20 21:07:10,569 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-09-20 21:07:10,569 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 92 treesize of output 172 [2022-09-20 21:07:11,304 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 21:07:11,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-09-20 21:07:13,952 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2022-09-20 21:07:14,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-09-20 21:07:14,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [780729277] provided 0 perfect and 2 imperfect interpolant sequences [2022-09-20 21:07:14,286 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-09-20 21:07:14,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [57, 74, 50] total 155 [2022-09-20 21:07:14,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476183419] [2022-09-20 21:07:14,286 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-09-20 21:07:14,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 155 states [2022-09-20 21:07:14,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 21:07:14,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 155 interpolants. [2022-09-20 21:07:14,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1061, Invalid=22809, Unknown=0, NotChecked=0, Total=23870 [2022-09-20 21:07:14,316 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 368 [2022-09-20 21:07:14,328 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 335 transitions, 795 flow. Second operand has 155 states, 155 states have (on average 134.29032258064515) internal successors, (20815), 155 states have internal predecessors, (20815), 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 21:07:14,329 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 21:07:14,329 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 368 [2022-09-20 21:07:14,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand