/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-NoLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 20:59:13,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 20:59:13,883 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 20:59:13,927 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 20:59:13,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 20:59:13,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 20:59:13,933 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 20:59:13,935 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 20:59:13,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 20:59:13,938 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 20:59:13,940 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 20:59:13,941 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 20:59:13,941 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 20:59:13,945 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 20:59:13,947 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 20:59:13,949 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 20:59:13,950 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 20:59:13,951 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 20:59:13,953 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 20:59:13,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 20:59:13,955 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 20:59:13,956 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 20:59:13,958 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 20:59:13,959 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 20:59:13,967 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 20:59:13,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 20:59:13,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 20:59:13,969 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 20:59:13,969 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 20:59:13,970 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 20:59:13,970 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 20:59:13,971 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 20:59:13,972 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 20:59:13,973 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 20:59:13,974 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 20:59:13,974 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 20:59:13,974 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 20:59:13,974 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 20:59:13,975 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 20:59:13,975 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 20:59:13,976 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 20:59:13,980 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 20:59:14,008 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 20:59:14,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 20:59:14,010 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 20:59:14,010 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 20:59:14,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 20:59:14,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 20:59:14,010 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 20:59:14,011 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 20:59:14,011 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 20:59:14,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 20:59:14,012 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 20:59:14,012 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 20:59:14,012 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 20:59:14,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 20:59:14,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 20:59:14,012 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 20:59:14,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 20:59:14,013 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 20:59:14,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 20:59:14,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 20:59:14,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 20:59:14,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 20:59:14,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 20:59:14,013 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:59:14,013 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 20:59:14,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 20:59:14,015 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 20:59:14,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 20:59:14,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 20:59:14,015 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 20:59:14,015 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 20:59:14,015 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 20:59:14,229 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 20:59:14,248 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 20:59:14,251 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 20:59:14,251 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 20:59:14,255 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 20:59:14,256 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2022-09-20 20:59:14,316 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8221c27a/037eb98568e0480db2de92d853c2a225/FLAGdef11f948 [2022-09-20 20:59:14,727 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 20:59:14,728 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c [2022-09-20 20:59:14,733 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8221c27a/037eb98568e0480db2de92d853c2a225/FLAGdef11f948 [2022-09-20 20:59:14,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8221c27a/037eb98568e0480db2de92d853c2a225 [2022-09-20 20:59:14,745 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 20:59:14,746 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 20:59:14,747 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 20:59:14,747 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 20:59:14,749 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 20:59:14,751 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:59:14" (1/1) ... [2022-09-20 20:59:14,752 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25f10117 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:14, skipping insertion in model container [2022-09-20 20:59:14,752 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:59:14" (1/1) ... [2022-09-20 20:59:14,767 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 20:59:14,784 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 20:59:14,937 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c[3512,3525] [2022-09-20 20:59:14,940 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:59:14,945 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 20:59:14,963 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-bakery-2.wvr.c[3512,3525] [2022-09-20 20:59:14,964 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:59:14,975 INFO L208 MainTranslator]: Completed translation [2022-09-20 20:59:14,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:14 WrapperNode [2022-09-20 20:59:14,976 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 20:59:14,977 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 20:59:14,977 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 20:59:14,977 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 20:59:14,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:14" (1/1) ... [2022-09-20 20:59:14,999 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:14" (1/1) ... [2022-09-20 20:59:15,018 INFO L138 Inliner]: procedures = 21, calls = 60, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 156 [2022-09-20 20:59:15,018 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 20:59:15,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 20:59:15,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 20:59:15,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 20:59:15,026 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:14" (1/1) ... [2022-09-20 20:59:15,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:14" (1/1) ... [2022-09-20 20:59:15,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:14" (1/1) ... [2022-09-20 20:59:15,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:14" (1/1) ... [2022-09-20 20:59:15,033 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:14" (1/1) ... [2022-09-20 20:59:15,035 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:14" (1/1) ... [2022-09-20 20:59:15,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:14" (1/1) ... [2022-09-20 20:59:15,038 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 20:59:15,039 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 20:59:15,039 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 20:59:15,039 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 20:59:15,042 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:14" (1/1) ... [2022-09-20 20:59:15,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:59:15,064 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:59:15,085 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 20:59:15,111 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 20:59:15,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 20:59:15,135 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 20:59:15,135 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 20:59:15,135 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 20:59:15,135 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 20:59:15,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 20:59:15,135 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 20:59:15,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 20:59:15,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 20:59:15,136 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 20:59:15,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 20:59:15,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 20:59:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 20:59:15,137 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 20:59:15,138 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 20:59:15,228 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 20:59:15,229 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 20:59:15,415 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 20:59:15,531 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 20:59:15,531 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 20:59:15,534 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:59:15 BoogieIcfgContainer [2022-09-20 20:59:15,534 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 20:59:15,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 20:59:15,541 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 20:59:15,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 20:59:15,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 08:59:14" (1/3) ... [2022-09-20 20:59:15,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23db3b37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:59:15, skipping insertion in model container [2022-09-20 20:59:15,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:59:14" (2/3) ... [2022-09-20 20:59:15,545 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23db3b37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:59:15, skipping insertion in model container [2022-09-20 20:59:15,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:59:15" (3/3) ... [2022-09-20 20:59:15,546 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-bakery-2.wvr.c [2022-09-20 20:59:15,561 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 20:59:15,561 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 20:59:15,561 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 20:59:15,604 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-09-20 20:59:15,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 113 places, 108 transitions, 232 flow [2022-09-20 20:59:15,685 INFO L130 PetriNetUnfolder]: 2/106 cut-off events. [2022-09-20 20:59:15,685 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 20:59:15,688 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115 conditions, 106 events. 2/106 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 45 event pairs, 0 based on Foata normal form. 0/103 useless extension candidates. Maximal degree in co-relation 70. Up to 2 conditions per place. [2022-09-20 20:59:15,688 INFO L82 GeneralOperation]: Start removeDead. Operand has 113 places, 108 transitions, 232 flow [2022-09-20 20:59:15,696 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 102 places, 97 transitions, 206 flow [2022-09-20 20:59:15,705 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 20:59:15,716 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;@7cffb6fa, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 20:59:15,716 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-09-20 20:59:15,749 INFO L130 PetriNetUnfolder]: 2/96 cut-off events. [2022-09-20 20:59:15,750 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-09-20 20:59:15,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:59:15,751 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] [2022-09-20 20:59:15,751 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:59:15,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:59:15,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1987416869, now seen corresponding path program 1 times [2022-09-20 20:59:15,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:59:15,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837870389] [2022-09-20 20:59:15,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:59:15,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:59:16,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:59:16,318 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 20:59:16,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:59:16,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837870389] [2022-09-20 20:59:16,320 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837870389] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:59:16,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:59:16,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-20 20:59:16,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [605126497] [2022-09-20 20:59:16,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:59:16,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 20:59:16,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:59:16,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 20:59:16,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-09-20 20:59:16,384 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 108 [2022-09-20 20:59:16,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 97 transitions, 206 flow. Second operand has 11 states, 11 states have (on average 75.72727272727273) internal successors, (833), 11 states have internal predecessors, (833), 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 20:59:16,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:59:16,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 108 [2022-09-20 20:59:16,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:59:16,887 INFO L130 PetriNetUnfolder]: 46/296 cut-off events. [2022-09-20 20:59:16,887 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-09-20 20:59:16,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 483 conditions, 296 events. 46/296 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 1094 event pairs, 27 based on Foata normal form. 5/293 useless extension candidates. Maximal degree in co-relation 301. Up to 64 conditions per place. [2022-09-20 20:59:16,895 INFO L137 encePairwiseOnDemand]: 90/108 looper letters, 44 selfloop transitions, 13 changer transitions 16/136 dead transitions. [2022-09-20 20:59:16,895 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 136 transitions, 451 flow [2022-09-20 20:59:16,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 20:59:16,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 20:59:16,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1247 transitions. [2022-09-20 20:59:16,917 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7216435185185185 [2022-09-20 20:59:16,918 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1247 transitions. [2022-09-20 20:59:16,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1247 transitions. [2022-09-20 20:59:16,921 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:59:16,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1247 transitions. [2022-09-20 20:59:16,929 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 77.9375) internal successors, (1247), 16 states have internal predecessors, (1247), 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 20:59:16,937 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 108.0) internal successors, (1836), 17 states have internal predecessors, (1836), 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 20:59:16,938 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 108.0) internal successors, (1836), 17 states have internal predecessors, (1836), 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 20:59:16,940 INFO L175 Difference]: Start difference. First operand has 102 places, 97 transitions, 206 flow. Second operand 16 states and 1247 transitions. [2022-09-20 20:59:16,941 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 136 transitions, 451 flow [2022-09-20 20:59:16,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 136 transitions, 429 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-09-20 20:59:16,946 INFO L231 Difference]: Finished difference. Result has 118 places, 98 transitions, 246 flow [2022-09-20 20:59:16,948 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=98, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=246, PETRI_PLACES=118, PETRI_TRANSITIONS=98} [2022-09-20 20:59:16,951 INFO L287 CegarLoopForPetriNet]: 102 programPoint places, 16 predicate places. [2022-09-20 20:59:16,951 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 98 transitions, 246 flow [2022-09-20 20:59:16,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 75.72727272727273) internal successors, (833), 11 states have internal predecessors, (833), 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 20:59:16,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:59:16,952 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] [2022-09-20 20:59:16,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 20:59:16,953 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:59:16,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:59:16,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1559964915, now seen corresponding path program 2 times [2022-09-20 20:59:16,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:59:16,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [413043823] [2022-09-20 20:59:16,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:59:16,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:59:16,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:59:17,032 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 20:59:17,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:59:17,033 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [413043823] [2022-09-20 20:59:17,033 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [413043823] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:59:17,033 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:59:17,033 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 20:59:17,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057735356] [2022-09-20 20:59:17,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:59:17,034 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 20:59:17,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:59:17,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 20:59:17,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 20:59:17,036 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 108 [2022-09-20 20:59:17,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 98 transitions, 246 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 20:59:17,036 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:59:17,036 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 108 [2022-09-20 20:59:17,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:59:17,092 INFO L130 PetriNetUnfolder]: 31/234 cut-off events. [2022-09-20 20:59:17,093 INFO L131 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2022-09-20 20:59:17,098 INFO L83 FinitePrefix]: Finished finitePrefix Result has 381 conditions, 234 events. 31/234 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 720 event pairs, 19 based on Foata normal form. 3/230 useless extension candidates. Maximal degree in co-relation 361. Up to 57 conditions per place. [2022-09-20 20:59:17,104 INFO L137 encePairwiseOnDemand]: 105/108 looper letters, 19 selfloop transitions, 2 changer transitions 0/102 dead transitions. [2022-09-20 20:59:17,105 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 110 places, 102 transitions, 297 flow [2022-09-20 20:59:17,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 20:59:17,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 20:59:17,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2022-09-20 20:59:17,106 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8827160493827161 [2022-09-20 20:59:17,106 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2022-09-20 20:59:17,106 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2022-09-20 20:59:17,107 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:59:17,107 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2022-09-20 20:59:17,108 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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 20:59:17,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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 20:59:17,109 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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 20:59:17,109 INFO L175 Difference]: Start difference. First operand has 118 places, 98 transitions, 246 flow. Second operand 3 states and 286 transitions. [2022-09-20 20:59:17,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 110 places, 102 transitions, 297 flow [2022-09-20 20:59:17,113 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 105 places, 102 transitions, 287 flow, removed 3 selfloop flow, removed 5 redundant places. [2022-09-20 20:59:17,116 INFO L231 Difference]: Finished difference. Result has 106 places, 98 transitions, 244 flow [2022-09-20 20:59:17,116 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=244, PETRI_PLACES=106, PETRI_TRANSITIONS=98} [2022-09-20 20:59:17,117 INFO L287 CegarLoopForPetriNet]: 102 programPoint places, 4 predicate places. [2022-09-20 20:59:17,118 INFO L495 AbstractCegarLoop]: Abstraction has has 106 places, 98 transitions, 244 flow [2022-09-20 20:59:17,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 20:59:17,118 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:59:17,118 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] [2022-09-20 20:59:17,119 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 20:59:17,119 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:59:17,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:59:17,123 INFO L85 PathProgramCache]: Analyzing trace with hash 787868635, now seen corresponding path program 3 times [2022-09-20 20:59:17,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:59:17,123 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141685683] [2022-09-20 20:59:17,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:59:17,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:59:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:59:17,341 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 20:59:17,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:59:17,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141685683] [2022-09-20 20:59:17,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141685683] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:59:17,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:59:17,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-09-20 20:59:17,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526061538] [2022-09-20 20:59:17,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:59:17,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-09-20 20:59:17,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:59:17,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-09-20 20:59:17,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-09-20 20:59:17,345 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 108 [2022-09-20 20:59:17,346 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 98 transitions, 244 flow. Second operand has 11 states, 11 states have (on average 75.72727272727273) internal successors, (833), 11 states have internal predecessors, (833), 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 20:59:17,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:59:17,347 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 108 [2022-09-20 20:59:17,347 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:59:17,607 INFO L130 PetriNetUnfolder]: 45/274 cut-off events. [2022-09-20 20:59:17,607 INFO L131 PetriNetUnfolder]: For 39/39 co-relation queries the response was YES. [2022-09-20 20:59:17,608 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498 conditions, 274 events. 45/274 cut-off events. For 39/39 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 959 event pairs, 23 based on Foata normal form. 1/272 useless extension candidates. Maximal degree in co-relation 279. Up to 60 conditions per place. [2022-09-20 20:59:17,609 INFO L137 encePairwiseOnDemand]: 94/108 looper letters, 32 selfloop transitions, 12 changer transitions 19/126 dead transitions. [2022-09-20 20:59:17,609 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 126 transitions, 441 flow [2022-09-20 20:59:17,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-09-20 20:59:17,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-09-20 20:59:17,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 939 transitions. [2022-09-20 20:59:17,612 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7245370370370371 [2022-09-20 20:59:17,612 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 939 transitions. [2022-09-20 20:59:17,612 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 939 transitions. [2022-09-20 20:59:17,613 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:59:17,613 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 939 transitions. [2022-09-20 20:59:17,615 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 78.25) internal successors, (939), 12 states have internal predecessors, (939), 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 20:59:17,617 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 108.0) internal successors, (1404), 13 states have internal predecessors, (1404), 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 20:59:17,618 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 108.0) internal successors, (1404), 13 states have internal predecessors, (1404), 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 20:59:17,618 INFO L175 Difference]: Start difference. First operand has 106 places, 98 transitions, 244 flow. Second operand 12 states and 939 transitions. [2022-09-20 20:59:17,618 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 126 transitions, 441 flow [2022-09-20 20:59:17,620 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 126 transitions, 437 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 20:59:17,622 INFO L231 Difference]: Finished difference. Result has 118 places, 95 transitions, 257 flow [2022-09-20 20:59:17,623 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=257, PETRI_PLACES=118, PETRI_TRANSITIONS=95} [2022-09-20 20:59:17,623 INFO L287 CegarLoopForPetriNet]: 102 programPoint places, 16 predicate places. [2022-09-20 20:59:17,624 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 95 transitions, 257 flow [2022-09-20 20:59:17,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 75.72727272727273) internal successors, (833), 11 states have internal predecessors, (833), 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 20:59:17,624 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:59:17,624 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] [2022-09-20 20:59:17,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 20:59:17,625 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:59:17,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:59:17,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1810189949, now seen corresponding path program 4 times [2022-09-20 20:59:17,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:59:17,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12722357] [2022-09-20 20:59:17,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:59:17,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:59:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:59:17,796 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 20:59:17,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:59:17,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12722357] [2022-09-20 20:59:17,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12722357] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:59:17,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:59:17,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 20:59:17,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987286046] [2022-09-20 20:59:17,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:59:17,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 20:59:17,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:59:17,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 20:59:17,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-09-20 20:59:17,810 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2022-09-20 20:59:17,811 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 95 transitions, 257 flow. Second operand has 8 states, 8 states have (on average 80.25) internal successors, (642), 8 states have internal predecessors, (642), 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 20:59:17,811 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:59:17,811 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2022-09-20 20:59:17,811 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:59:17,956 INFO L130 PetriNetUnfolder]: 31/227 cut-off events. [2022-09-20 20:59:17,956 INFO L131 PetriNetUnfolder]: For 37/37 co-relation queries the response was YES. [2022-09-20 20:59:17,958 INFO L83 FinitePrefix]: Finished finitePrefix Result has 431 conditions, 227 events. 31/227 cut-off events. For 37/37 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 625 event pairs, 14 based on Foata normal form. 3/228 useless extension candidates. Maximal degree in co-relation 411. Up to 57 conditions per place. [2022-09-20 20:59:17,959 INFO L137 encePairwiseOnDemand]: 100/108 looper letters, 28 selfloop transitions, 7 changer transitions 9/113 dead transitions. [2022-09-20 20:59:17,959 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 113 transitions, 388 flow [2022-09-20 20:59:17,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 20:59:17,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 20:59:17,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 661 transitions. [2022-09-20 20:59:17,961 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7650462962962963 [2022-09-20 20:59:17,961 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 661 transitions. [2022-09-20 20:59:17,961 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 661 transitions. [2022-09-20 20:59:17,962 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:59:17,962 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 661 transitions. [2022-09-20 20:59:17,963 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 82.625) internal successors, (661), 8 states have internal predecessors, (661), 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 20:59:17,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 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 20:59:17,965 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 108.0) internal successors, (972), 9 states have internal predecessors, (972), 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 20:59:17,965 INFO L175 Difference]: Start difference. First operand has 118 places, 95 transitions, 257 flow. Second operand 8 states and 661 transitions. [2022-09-20 20:59:17,965 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 113 transitions, 388 flow [2022-09-20 20:59:17,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 113 transitions, 345 flow, removed 4 selfloop flow, removed 13 redundant places. [2022-09-20 20:59:17,971 INFO L231 Difference]: Finished difference. Result has 111 places, 98 transitions, 249 flow [2022-09-20 20:59:17,971 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=101, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=249, PETRI_PLACES=111, PETRI_TRANSITIONS=98} [2022-09-20 20:59:17,973 INFO L287 CegarLoopForPetriNet]: 102 programPoint places, 9 predicate places. [2022-09-20 20:59:17,973 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 98 transitions, 249 flow [2022-09-20 20:59:17,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 80.25) internal successors, (642), 8 states have internal predecessors, (642), 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 20:59:17,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:59:17,978 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] [2022-09-20 20:59:17,980 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 20:59:17,980 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:59:17,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:59:17,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1756209965, now seen corresponding path program 5 times [2022-09-20 20:59:17,981 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:59:17,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829026303] [2022-09-20 20:59:17,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:59:17,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:59:18,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:59:18,071 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 20:59:18,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:59:18,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829026303] [2022-09-20 20:59:18,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829026303] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:59:18,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:59:18,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-09-20 20:59:18,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777702441] [2022-09-20 20:59:18,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:59:18,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-09-20 20:59:18,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:59:18,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-09-20 20:59:18,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-09-20 20:59:18,073 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 108 [2022-09-20 20:59:18,074 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 98 transitions, 249 flow. Second operand has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 20:59:18,074 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:59:18,074 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 108 [2022-09-20 20:59:18,074 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:59:18,113 INFO L130 PetriNetUnfolder]: 26/199 cut-off events. [2022-09-20 20:59:18,113 INFO L131 PetriNetUnfolder]: For 29/30 co-relation queries the response was YES. [2022-09-20 20:59:18,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 368 conditions, 199 events. 26/199 cut-off events. For 29/30 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 488 event pairs, 13 based on Foata normal form. 5/201 useless extension candidates. Maximal degree in co-relation 228. Up to 53 conditions per place. [2022-09-20 20:59:18,114 INFO L137 encePairwiseOnDemand]: 105/108 looper letters, 22 selfloop transitions, 2 changer transitions 0/103 dead transitions. [2022-09-20 20:59:18,114 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 103 transitions, 319 flow [2022-09-20 20:59:18,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-09-20 20:59:18,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-09-20 20:59:18,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 286 transitions. [2022-09-20 20:59:18,115 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8827160493827161 [2022-09-20 20:59:18,115 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 286 transitions. [2022-09-20 20:59:18,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 286 transitions. [2022-09-20 20:59:18,116 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:59:18,116 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 286 transitions. [2022-09-20 20:59:18,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 95.33333333333333) internal successors, (286), 3 states have internal predecessors, (286), 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 20:59:18,117 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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 20:59:18,117 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 108.0) internal successors, (432), 4 states have internal predecessors, (432), 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 20:59:18,117 INFO L175 Difference]: Start difference. First operand has 111 places, 98 transitions, 249 flow. Second operand 3 states and 286 transitions. [2022-09-20 20:59:18,117 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 103 transitions, 319 flow [2022-09-20 20:59:18,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 103 transitions, 307 flow, removed 2 selfloop flow, removed 4 redundant places. [2022-09-20 20:59:18,122 INFO L231 Difference]: Finished difference. Result has 108 places, 98 transitions, 248 flow [2022-09-20 20:59:18,122 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=108, PETRI_TRANSITIONS=98} [2022-09-20 20:59:18,124 INFO L287 CegarLoopForPetriNet]: 102 programPoint places, 6 predicate places. [2022-09-20 20:59:18,124 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 98 transitions, 248 flow [2022-09-20 20:59:18,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 93.66666666666667) internal successors, (281), 3 states have internal predecessors, (281), 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 20:59:18,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:59:18,125 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] [2022-09-20 20:59:18,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 20:59:18,125 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:59:18,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:59:18,126 INFO L85 PathProgramCache]: Analyzing trace with hash -369751189, now seen corresponding path program 6 times [2022-09-20 20:59:18,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:59:18,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268162482] [2022-09-20 20:59:18,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:59:18,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:59:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:59:18,277 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 20:59:18,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:59:18,277 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268162482] [2022-09-20 20:59:18,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268162482] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:59:18,278 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:59:18,278 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:59:18,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202351329] [2022-09-20 20:59:18,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:59:18,278 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:59:18,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:59:18,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:59:18,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:59:18,280 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2022-09-20 20:59:18,280 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 98 transitions, 248 flow. Second operand has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 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 20:59:18,281 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:59:18,281 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2022-09-20 20:59:18,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:59:18,379 INFO L130 PetriNetUnfolder]: 19/186 cut-off events. [2022-09-20 20:59:18,379 INFO L131 PetriNetUnfolder]: For 35/35 co-relation queries the response was YES. [2022-09-20 20:59:18,380 INFO L83 FinitePrefix]: Finished finitePrefix Result has 347 conditions, 186 events. 19/186 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 402 event pairs, 14 based on Foata normal form. 3/186 useless extension candidates. Maximal degree in co-relation 190. Up to 53 conditions per place. [2022-09-20 20:59:18,380 INFO L137 encePairwiseOnDemand]: 102/108 looper letters, 23 selfloop transitions, 4 changer transitions 8/104 dead transitions. [2022-09-20 20:59:18,381 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 114 places, 104 transitions, 335 flow [2022-09-20 20:59:18,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 20:59:18,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 20:59:18,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 575 transitions. [2022-09-20 20:59:18,382 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7605820105820106 [2022-09-20 20:59:18,382 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 575 transitions. [2022-09-20 20:59:18,383 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 575 transitions. [2022-09-20 20:59:18,383 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:59:18,383 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 575 transitions. [2022-09-20 20:59:18,384 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 82.14285714285714) internal successors, (575), 7 states have internal predecessors, (575), 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 20:59:18,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 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 20:59:18,387 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 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 20:59:18,387 INFO L175 Difference]: Start difference. First operand has 108 places, 98 transitions, 248 flow. Second operand 7 states and 575 transitions. [2022-09-20 20:59:18,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 114 places, 104 transitions, 335 flow [2022-09-20 20:59:18,388 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 112 places, 104 transitions, 329 flow, removed 1 selfloop flow, removed 2 redundant places. [2022-09-20 20:59:18,389 INFO L231 Difference]: Finished difference. Result has 113 places, 95 transitions, 236 flow [2022-09-20 20:59:18,390 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=97, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=93, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=236, PETRI_PLACES=113, PETRI_TRANSITIONS=95} [2022-09-20 20:59:18,392 INFO L287 CegarLoopForPetriNet]: 102 programPoint places, 11 predicate places. [2022-09-20 20:59:18,392 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 95 transitions, 236 flow [2022-09-20 20:59:18,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 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 20:59:18,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:59:18,393 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] [2022-09-20 20:59:18,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 20:59:18,393 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:59:18,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:59:18,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1104919767, now seen corresponding path program 7 times [2022-09-20 20:59:18,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:59:18,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73335965] [2022-09-20 20:59:18,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:59:18,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:59:18,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:59:18,563 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 20:59:18,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:59:18,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73335965] [2022-09-20 20:59:18,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73335965] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:59:18,564 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:59:18,564 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:59:18,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560493413] [2022-09-20 20:59:18,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:59:18,567 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:59:18,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:59:18,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:59:18,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:59:18,568 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2022-09-20 20:59:18,569 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 95 transitions, 236 flow. Second operand has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 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 20:59:18,569 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:59:18,569 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2022-09-20 20:59:18,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:59:18,660 INFO L130 PetriNetUnfolder]: 14/166 cut-off events. [2022-09-20 20:59:18,660 INFO L131 PetriNetUnfolder]: For 33/33 co-relation queries the response was YES. [2022-09-20 20:59:18,660 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295 conditions, 166 events. 14/166 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 284 event pairs, 8 based on Foata normal form. 4/168 useless extension candidates. Maximal degree in co-relation 199. Up to 44 conditions per place. [2022-09-20 20:59:18,661 INFO L137 encePairwiseOnDemand]: 101/108 looper letters, 22 selfloop transitions, 6 changer transitions 5/102 dead transitions. [2022-09-20 20:59:18,661 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 102 transitions, 326 flow [2022-09-20 20:59:18,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 20:59:18,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 20:59:18,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 573 transitions. [2022-09-20 20:59:18,663 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7579365079365079 [2022-09-20 20:59:18,663 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 573 transitions. [2022-09-20 20:59:18,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 573 transitions. [2022-09-20 20:59:18,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:59:18,664 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 573 transitions. [2022-09-20 20:59:18,665 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 81.85714285714286) internal successors, (573), 7 states have internal predecessors, (573), 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 20:59:18,666 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 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 20:59:18,666 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 108.0) internal successors, (864), 8 states have internal predecessors, (864), 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 20:59:18,666 INFO L175 Difference]: Start difference. First operand has 113 places, 95 transitions, 236 flow. Second operand 7 states and 573 transitions. [2022-09-20 20:59:18,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 102 transitions, 326 flow [2022-09-20 20:59:18,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 102 transitions, 310 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-09-20 20:59:18,669 INFO L231 Difference]: Finished difference. Result has 110 places, 95 transitions, 238 flow [2022-09-20 20:59:18,669 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=222, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=95, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=238, PETRI_PLACES=110, PETRI_TRANSITIONS=95} [2022-09-20 20:59:18,670 INFO L287 CegarLoopForPetriNet]: 102 programPoint places, 8 predicate places. [2022-09-20 20:59:18,670 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 95 transitions, 238 flow [2022-09-20 20:59:18,670 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 80.71428571428571) internal successors, (565), 7 states have internal predecessors, (565), 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 20:59:18,670 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:59:18,670 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] [2022-09-20 20:59:18,671 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 20:59:18,671 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-09-20 20:59:18,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:59:18,671 INFO L85 PathProgramCache]: Analyzing trace with hash 284331135, now seen corresponding path program 8 times [2022-09-20 20:59:18,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:59:18,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801944300] [2022-09-20 20:59:18,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:59:18,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:59:18,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:59:18,780 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 20:59:18,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:59:18,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801944300] [2022-09-20 20:59:18,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801944300] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:59:18,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:59:18,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-09-20 20:59:18,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257349084] [2022-09-20 20:59:18,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:59:18,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-09-20 20:59:18,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:59:18,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-09-20 20:59:18,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2022-09-20 20:59:18,782 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 108 [2022-09-20 20:59:18,783 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 95 transitions, 238 flow. Second operand has 9 states, 9 states have (on average 79.88888888888889) internal successors, (719), 9 states have internal predecessors, (719), 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 20:59:18,783 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:59:18,783 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 108 [2022-09-20 20:59:18,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:59:18,845 INFO L130 PetriNetUnfolder]: 4/84 cut-off events. [2022-09-20 20:59:18,845 INFO L131 PetriNetUnfolder]: For 14/14 co-relation queries the response was YES. [2022-09-20 20:59:18,845 INFO L83 FinitePrefix]: Finished finitePrefix Result has 153 conditions, 84 events. 4/84 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 52 event pairs, 0 based on Foata normal form. 3/87 useless extension candidates. Maximal degree in co-relation 70. Up to 10 conditions per place. [2022-09-20 20:59:18,845 INFO L137 encePairwiseOnDemand]: 98/108 looper letters, 0 selfloop transitions, 0 changer transitions 73/73 dead transitions. [2022-09-20 20:59:18,845 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 73 transitions, 223 flow [2022-09-20 20:59:18,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 20:59:18,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 20:59:18,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 713 transitions. [2022-09-20 20:59:18,847 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7335390946502057 [2022-09-20 20:59:18,848 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 713 transitions. [2022-09-20 20:59:18,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 713 transitions. [2022-09-20 20:59:18,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:59:18,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 713 transitions. [2022-09-20 20:59:18,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.22222222222223) internal successors, (713), 9 states have internal predecessors, (713), 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 20:59:18,851 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 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 20:59:18,851 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 108.0) internal successors, (1080), 10 states have internal predecessors, (1080), 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 20:59:18,852 INFO L175 Difference]: Start difference. First operand has 110 places, 95 transitions, 238 flow. Second operand 9 states and 713 transitions. [2022-09-20 20:59:18,852 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 73 transitions, 223 flow [2022-09-20 20:59:18,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 73 transitions, 204 flow, removed 1 selfloop flow, removed 8 redundant places. [2022-09-20 20:59:18,853 INFO L231 Difference]: Finished difference. Result has 86 places, 0 transitions, 0 flow [2022-09-20 20:59:18,853 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=0, PETRI_PLACES=86, PETRI_TRANSITIONS=0} [2022-09-20 20:59:18,854 INFO L287 CegarLoopForPetriNet]: 102 programPoint places, -16 predicate places. [2022-09-20 20:59:18,854 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 0 transitions, 0 flow [2022-09-20 20:59:18,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 79.88888888888889) internal successors, (719), 9 states have internal predecessors, (719), 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 20:59:18,856 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-09-20 20:59:18,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-09-20 20:59:18,857 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-09-20 20:59:18,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 20:59:18,857 INFO L444 BasicCegarLoop]: Path program histogram: [8] [2022-09-20 20:59:18,860 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 20:59:18,860 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 20:59:18,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 08:59:18 BasicIcfg [2022-09-20 20:59:18,864 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 20:59:18,865 INFO L158 Benchmark]: Toolchain (without parser) took 4118.86ms. Allocated memory was 195.0MB in the beginning and 242.2MB in the end (delta: 47.2MB). Free memory was 163.8MB in the beginning and 189.7MB in the end (delta: -25.9MB). Peak memory consumption was 21.4MB. Max. memory is 8.0GB. [2022-09-20 20:59:18,865 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 195.0MB. Free memory is still 148.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 20:59:18,866 INFO L158 Benchmark]: CACSL2BoogieTranslator took 229.28ms. Allocated memory was 195.0MB in the beginning and 242.2MB in the end (delta: 47.2MB). Free memory was 163.6MB in the beginning and 209.0MB in the end (delta: -45.3MB). Peak memory consumption was 7.0MB. Max. memory is 8.0GB. [2022-09-20 20:59:18,866 INFO L158 Benchmark]: Boogie Procedure Inliner took 41.58ms. Allocated memory is still 242.2MB. Free memory was 208.4MB in the beginning and 206.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 20:59:18,866 INFO L158 Benchmark]: Boogie Preprocessor took 19.19ms. Allocated memory is still 242.2MB. Free memory was 206.9MB in the beginning and 205.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-20 20:59:18,866 INFO L158 Benchmark]: RCFGBuilder took 494.95ms. Allocated memory is still 242.2MB. Free memory was 205.3MB in the beginning and 187.5MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. [2022-09-20 20:59:18,867 INFO L158 Benchmark]: TraceAbstraction took 3324.09ms. Allocated memory is still 242.2MB. Free memory was 186.9MB in the beginning and 189.7MB in the end (delta: -2.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 20:59:18,868 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 195.0MB. Free memory is still 148.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 229.28ms. Allocated memory was 195.0MB in the beginning and 242.2MB in the end (delta: 47.2MB). Free memory was 163.6MB in the beginning and 209.0MB in the end (delta: -45.3MB). Peak memory consumption was 7.0MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 41.58ms. Allocated memory is still 242.2MB. Free memory was 208.4MB in the beginning and 206.9MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 19.19ms. Allocated memory is still 242.2MB. Free memory was 206.9MB in the beginning and 205.8MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 494.95ms. Allocated memory is still 242.2MB. Free memory was 205.3MB in the beginning and 187.5MB in the end (delta: 17.8MB). Peak memory consumption was 17.8MB. Max. memory is 8.0GB. * TraceAbstraction took 3324.09ms. Allocated memory is still 242.2MB. Free memory was 186.9MB in the beginning and 189.7MB in the end (delta: -2.7MB). There was no memory consumed. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 130]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 133 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 8, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 233 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 233 mSDsluCounter, 296 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 598 mSDsCounter, 47 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1038 IncrementalHoareTripleChecker+Invalid, 1085 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 47 mSolverCounterUnsat, 93 mSDtfsCounter, 1038 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 90 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=257occurred in iteration=3, InterpolantAutomatonStates: 65, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 744 NumberOfCodeBlocks, 744 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 736 ConstructedInterpolants, 0 QuantifiedInterpolants, 2227 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-20 20:59:18,906 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...