/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/chl-sre-trans.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 20:57:01,945 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 20:57:01,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 20:57:01,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 20:57:01,975 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 20:57:01,976 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 20:57:01,977 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 20:57:01,978 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 20:57:01,979 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 20:57:01,980 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 20:57:01,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 20:57:01,981 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 20:57:01,982 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 20:57:01,982 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 20:57:01,983 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 20:57:01,984 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 20:57:01,984 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 20:57:01,985 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 20:57:01,986 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 20:57:01,987 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 20:57:01,988 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 20:57:01,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 20:57:01,990 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 20:57:01,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 20:57:01,994 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 20:57:01,994 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 20:57:01,994 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 20:57:01,995 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 20:57:01,995 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 20:57:01,996 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 20:57:01,996 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 20:57:01,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 20:57:01,997 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 20:57:01,998 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 20:57:01,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 20:57:01,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 20:57:01,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 20:57:01,999 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 20:57:01,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 20:57:02,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 20:57:02,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 20:57:02,002 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 20:57:02,020 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 20:57:02,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 20:57:02,021 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 20:57:02,021 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 20:57:02,022 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 20:57:02,022 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 20:57:02,022 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 20:57:02,022 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 20:57:02,022 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 20:57:02,023 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 20:57:02,023 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 20:57:02,023 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 20:57:02,023 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 20:57:02,023 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 20:57:02,023 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 20:57:02,023 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 20:57:02,023 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 20:57:02,024 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 20:57:02,024 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 20:57:02,024 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 20:57:02,024 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 20:57:02,024 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 20:57:02,024 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 20:57:02,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:57:02,025 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 20:57:02,025 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 20:57:02,025 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 20:57:02,025 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 20:57:02,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 20:57:02,025 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 20:57:02,025 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 20:57:02,026 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 20:57:02,227 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 20:57:02,247 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 20:57:02,249 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 20:57:02,249 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 20:57:02,250 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 20:57:02,251 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-sre-trans.wvr.c [2022-09-20 20:57:02,295 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f678224b/f0e93383986c49b181ecfdbf8674c398/FLAG26474a0b6 [2022-09-20 20:57:02,641 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 20:57:02,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-sre-trans.wvr.c [2022-09-20 20:57:02,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f678224b/f0e93383986c49b181ecfdbf8674c398/FLAG26474a0b6 [2022-09-20 20:57:03,066 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6f678224b/f0e93383986c49b181ecfdbf8674c398 [2022-09-20 20:57:03,068 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 20:57:03,070 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 20:57:03,073 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 20:57:03,073 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 20:57:03,075 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 20:57:03,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:57:03" (1/1) ... [2022-09-20 20:57:03,077 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@486b6341 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:57:03, skipping insertion in model container [2022-09-20 20:57:03,077 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:57:03" (1/1) ... [2022-09-20 20:57:03,081 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 20:57:03,094 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 20:57:03,244 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/chl-sre-trans.wvr.c[2272,2285] [2022-09-20 20:57:03,246 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:57:03,250 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 20:57:03,273 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/chl-sre-trans.wvr.c[2272,2285] [2022-09-20 20:57:03,274 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:57:03,286 INFO L208 MainTranslator]: Completed translation [2022-09-20 20:57:03,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:57:03 WrapperNode [2022-09-20 20:57:03,287 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 20:57:03,287 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 20:57:03,288 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 20:57:03,288 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 20:57:03,292 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:57:03" (1/1) ... [2022-09-20 20:57:03,297 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:57:03" (1/1) ... [2022-09-20 20:57:03,311 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 70 [2022-09-20 20:57:03,311 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 20:57:03,312 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 20:57:03,312 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 20:57:03,312 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 20:57:03,317 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:57:03" (1/1) ... [2022-09-20 20:57:03,317 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:57:03" (1/1) ... [2022-09-20 20:57:03,321 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:57:03" (1/1) ... [2022-09-20 20:57:03,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:57:03" (1/1) ... [2022-09-20 20:57:03,324 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:57:03" (1/1) ... [2022-09-20 20:57:03,325 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:57:03" (1/1) ... [2022-09-20 20:57:03,326 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:57:03" (1/1) ... [2022-09-20 20:57:03,327 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 20:57:03,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 20:57:03,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 20:57:03,328 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 20:57:03,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:57:03" (1/1) ... [2022-09-20 20:57:03,334 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:57:03,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:57:03,356 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 20:57:03,358 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 20:57:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 20:57:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-09-20 20:57:03,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-09-20 20:57:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-09-20 20:57:03,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-09-20 20:57:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-09-20 20:57:03,379 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-09-20 20:57:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 20:57:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 20:57:03,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 20:57:03,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 20:57:03,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 20:57:03,380 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-09-20 20:57:03,380 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 20:57:03,381 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 20:57:03,481 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 20:57:03,482 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 20:57:03,702 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 20:57:03,708 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 20:57:03,708 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 20:57:03,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:57:03 BoogieIcfgContainer [2022-09-20 20:57:03,710 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 20:57:03,711 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 20:57:03,711 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 20:57:03,714 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 20:57:03,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 08:57:03" (1/3) ... [2022-09-20 20:57:03,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1b23f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:57:03, skipping insertion in model container [2022-09-20 20:57:03,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:57:03" (2/3) ... [2022-09-20 20:57:03,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c1b23f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:57:03, skipping insertion in model container [2022-09-20 20:57:03,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:57:03" (3/3) ... [2022-09-20 20:57:03,716 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-sre-trans.wvr.c [2022-09-20 20:57:03,728 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 20:57:03,728 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 20:57:03,728 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 20:57:03,777 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-09-20 20:57:03,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 119 places, 116 transitions, 256 flow [2022-09-20 20:57:03,841 INFO L130 PetriNetUnfolder]: 7/113 cut-off events. [2022-09-20 20:57:03,841 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 20:57:03,847 INFO L83 FinitePrefix]: Finished finitePrefix Result has 126 conditions, 113 events. 7/113 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 113 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 72. Up to 2 conditions per place. [2022-09-20 20:57:03,847 INFO L82 GeneralOperation]: Start removeDead. Operand has 119 places, 116 transitions, 256 flow [2022-09-20 20:57:03,852 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 102 transitions, 222 flow [2022-09-20 20:57:03,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 20:57:03,862 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;@1ba050df, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 20:57:03,863 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-20 20:57:03,884 INFO L130 PetriNetUnfolder]: 7/101 cut-off events. [2022-09-20 20:57:03,885 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-09-20 20:57:03,885 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:57:03,885 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] [2022-09-20 20:57:03,886 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:57:03,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:57:03,889 INFO L85 PathProgramCache]: Analyzing trace with hash -154722085, now seen corresponding path program 1 times [2022-09-20 20:57:03,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:57:03,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529995399] [2022-09-20 20:57:03,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:57:03,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:57:04,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:57:04,231 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 20:57:04,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:57:04,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529995399] [2022-09-20 20:57:04,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529995399] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:57:04,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:57:04,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:57:04,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894030024] [2022-09-20 20:57:04,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:57:04,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:57:04,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:57:04,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:57:04,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:57:04,276 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 116 [2022-09-20 20:57:04,282 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 102 transitions, 222 flow. Second operand has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 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 20:57:04,282 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:57:04,282 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 116 [2022-09-20 20:57:04,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:57:04,463 INFO L130 PetriNetUnfolder]: 81/364 cut-off events. [2022-09-20 20:57:04,464 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2022-09-20 20:57:04,466 INFO L83 FinitePrefix]: Finished finitePrefix Result has 581 conditions, 364 events. 81/364 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1766 event pairs, 30 based on Foata normal form. 2/349 useless extension candidates. Maximal degree in co-relation 466. Up to 91 conditions per place. [2022-09-20 20:57:04,468 INFO L137 encePairwiseOnDemand]: 104/116 looper letters, 25 selfloop transitions, 10 changer transitions 6/122 dead transitions. [2022-09-20 20:57:04,468 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 122 transitions, 368 flow [2022-09-20 20:57:04,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-09-20 20:57:04,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-09-20 20:57:04,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 796 transitions. [2022-09-20 20:57:04,483 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8577586206896551 [2022-09-20 20:57:04,484 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 796 transitions. [2022-09-20 20:57:04,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 796 transitions. [2022-09-20 20:57:04,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:57:04,489 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 796 transitions. [2022-09-20 20:57:04,493 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 99.5) internal successors, (796), 8 states have internal predecessors, (796), 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 20:57:04,500 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 116.0) internal successors, (1044), 9 states have internal predecessors, (1044), 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 20:57:04,501 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 116.0) internal successors, (1044), 9 states have internal predecessors, (1044), 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 20:57:04,502 INFO L175 Difference]: Start difference. First operand has 105 places, 102 transitions, 222 flow. Second operand 8 states and 796 transitions. [2022-09-20 20:57:04,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 122 transitions, 368 flow [2022-09-20 20:57:04,504 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 122 transitions, 340 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-09-20 20:57:04,507 INFO L231 Difference]: Finished difference. Result has 111 places, 107 transitions, 272 flow [2022-09-20 20:57:04,508 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=208, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=94, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=272, PETRI_PLACES=111, PETRI_TRANSITIONS=107} [2022-09-20 20:57:04,510 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 6 predicate places. [2022-09-20 20:57:04,511 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 107 transitions, 272 flow [2022-09-20 20:57:04,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 97.0) internal successors, (582), 6 states have internal predecessors, (582), 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 20:57:04,511 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:57:04,512 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] [2022-09-20 20:57:04,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 20:57:04,512 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:57:04,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:57:04,513 INFO L85 PathProgramCache]: Analyzing trace with hash -1375195157, now seen corresponding path program 2 times [2022-09-20 20:57:04,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:57:04,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704519640] [2022-09-20 20:57:04,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:57:04,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:57:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:57:04,618 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 20:57:04,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:57:04,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704519640] [2022-09-20 20:57:04,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704519640] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:57:04,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:57:04,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:57:04,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219360163] [2022-09-20 20:57:04,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:57:04,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:57:04,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:57:04,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:57:04,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:57:04,622 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 116 [2022-09-20 20:57:04,622 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 107 transitions, 272 flow. Second operand has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 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 20:57:04,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:57:04,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 116 [2022-09-20 20:57:04,623 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:57:04,702 INFO L130 PetriNetUnfolder]: 41/300 cut-off events. [2022-09-20 20:57:04,703 INFO L131 PetriNetUnfolder]: For 74/82 co-relation queries the response was YES. [2022-09-20 20:57:04,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 508 conditions, 300 events. 41/300 cut-off events. For 74/82 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 1425 event pairs, 12 based on Foata normal form. 2/284 useless extension candidates. Maximal degree in co-relation 495. Up to 39 conditions per place. [2022-09-20 20:57:04,705 INFO L137 encePairwiseOnDemand]: 109/116 looper letters, 18 selfloop transitions, 5 changer transitions 4/116 dead transitions. [2022-09-20 20:57:04,705 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 116 transitions, 354 flow [2022-09-20 20:57:04,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 20:57:04,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 20:57:04,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 615 transitions. [2022-09-20 20:57:04,707 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8836206896551724 [2022-09-20 20:57:04,707 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 615 transitions. [2022-09-20 20:57:04,707 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 615 transitions. [2022-09-20 20:57:04,707 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:57:04,707 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 615 transitions. [2022-09-20 20:57:04,708 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 102.5) internal successors, (615), 6 states have internal predecessors, (615), 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 20:57:04,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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 20:57:04,710 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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 20:57:04,710 INFO L175 Difference]: Start difference. First operand has 111 places, 107 transitions, 272 flow. Second operand 6 states and 615 transitions. [2022-09-20 20:57:04,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 116 transitions, 354 flow [2022-09-20 20:57:04,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 116 transitions, 348 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-09-20 20:57:04,713 INFO L231 Difference]: Finished difference. Result has 113 places, 107 transitions, 289 flow [2022-09-20 20:57:04,713 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=268, PETRI_DIFFERENCE_MINUEND_PLACES=105, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=289, PETRI_PLACES=113, PETRI_TRANSITIONS=107} [2022-09-20 20:57:04,714 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 8 predicate places. [2022-09-20 20:57:04,714 INFO L495 AbstractCegarLoop]: Abstraction has has 113 places, 107 transitions, 289 flow [2022-09-20 20:57:04,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 100.33333333333333) internal successors, (602), 6 states have internal predecessors, (602), 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 20:57:04,714 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:57:04,714 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] [2022-09-20 20:57:04,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 20:57:04,715 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:57:04,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:57:04,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1807013954, now seen corresponding path program 1 times [2022-09-20 20:57:04,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:57:04,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579270959] [2022-09-20 20:57:04,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:57:04,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:57:04,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:57:04,801 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 20:57:04,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:57:04,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579270959] [2022-09-20 20:57:04,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [579270959] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:57:04,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:57:04,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:57:04,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832958899] [2022-09-20 20:57:04,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:57:04,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:57:04,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:57:04,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:57:04,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:57:04,804 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 116 [2022-09-20 20:57:04,804 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 107 transitions, 289 flow. Second operand has 7 states, 7 states have (on average 96.57142857142857) internal successors, (676), 7 states have internal predecessors, (676), 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 20:57:04,805 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:57:04,805 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 116 [2022-09-20 20:57:04,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:57:04,912 INFO L130 PetriNetUnfolder]: 156/790 cut-off events. [2022-09-20 20:57:04,912 INFO L131 PetriNetUnfolder]: For 425/472 co-relation queries the response was YES. [2022-09-20 20:57:04,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1533 conditions, 790 events. 156/790 cut-off events. For 425/472 co-relation queries the response was YES. Maximal size of possible extension queue 59. Compared 5551 event pairs, 66 based on Foata normal form. 6/757 useless extension candidates. Maximal degree in co-relation 1518. Up to 110 conditions per place. [2022-09-20 20:57:04,917 INFO L137 encePairwiseOnDemand]: 109/116 looper letters, 34 selfloop transitions, 6 changer transitions 8/131 dead transitions. [2022-09-20 20:57:04,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 131 transitions, 497 flow [2022-09-20 20:57:04,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 20:57:04,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 20:57:04,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 600 transitions. [2022-09-20 20:57:04,919 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8620689655172413 [2022-09-20 20:57:04,919 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 600 transitions. [2022-09-20 20:57:04,919 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 600 transitions. [2022-09-20 20:57:04,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:57:04,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 600 transitions. [2022-09-20 20:57:04,920 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 100.0) internal successors, (600), 6 states have internal predecessors, (600), 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 20:57:04,921 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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 20:57:04,922 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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 20:57:04,922 INFO L175 Difference]: Start difference. First operand has 113 places, 107 transitions, 289 flow. Second operand 6 states and 600 transitions. [2022-09-20 20:57:04,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 131 transitions, 497 flow [2022-09-20 20:57:04,927 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 131 transitions, 468 flow, removed 6 selfloop flow, removed 5 redundant places. [2022-09-20 20:57:04,929 INFO L231 Difference]: Finished difference. Result has 115 places, 111 transitions, 325 flow [2022-09-20 20:57:04,930 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=325, PETRI_PLACES=115, PETRI_TRANSITIONS=111} [2022-09-20 20:57:04,931 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 10 predicate places. [2022-09-20 20:57:04,931 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 111 transitions, 325 flow [2022-09-20 20:57:04,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 96.57142857142857) internal successors, (676), 7 states have internal predecessors, (676), 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 20:57:04,932 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:57:04,932 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] [2022-09-20 20:57:04,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 20:57:04,933 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:57:04,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:57:04,933 INFO L85 PathProgramCache]: Analyzing trace with hash -392341713, now seen corresponding path program 1 times [2022-09-20 20:57:04,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:57:04,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088365126] [2022-09-20 20:57:04,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:57:04,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:57:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:57:05,043 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 20:57:05,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:57:05,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088365126] [2022-09-20 20:57:05,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088365126] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:57:05,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:57:05,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:57:05,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134854800] [2022-09-20 20:57:05,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:57:05,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:57:05,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:57:05,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:57:05,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:57:05,049 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 116 [2022-09-20 20:57:05,050 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 111 transitions, 325 flow. Second operand has 7 states, 7 states have (on average 97.28571428571429) internal successors, (681), 7 states have internal predecessors, (681), 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 20:57:05,050 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:57:05,050 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 116 [2022-09-20 20:57:05,050 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:57:05,181 INFO L130 PetriNetUnfolder]: 79/503 cut-off events. [2022-09-20 20:57:05,182 INFO L131 PetriNetUnfolder]: For 238/381 co-relation queries the response was YES. [2022-09-20 20:57:05,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1016 conditions, 503 events. 79/503 cut-off events. For 238/381 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3206 event pairs, 33 based on Foata normal form. 24/497 useless extension candidates. Maximal degree in co-relation 1000. Up to 116 conditions per place. [2022-09-20 20:57:05,185 INFO L137 encePairwiseOnDemand]: 108/116 looper letters, 32 selfloop transitions, 7 changer transitions 9/133 dead transitions. [2022-09-20 20:57:05,185 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 133 transitions, 503 flow [2022-09-20 20:57:05,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 20:57:05,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 20:57:05,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 894 transitions. [2022-09-20 20:57:05,187 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8563218390804598 [2022-09-20 20:57:05,188 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 894 transitions. [2022-09-20 20:57:05,188 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 894 transitions. [2022-09-20 20:57:05,188 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:57:05,188 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 894 transitions. [2022-09-20 20:57:05,190 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 99.33333333333333) internal successors, (894), 9 states have internal predecessors, (894), 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 20:57:05,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 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 20:57:05,191 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 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 20:57:05,191 INFO L175 Difference]: Start difference. First operand has 115 places, 111 transitions, 325 flow. Second operand 9 states and 894 transitions. [2022-09-20 20:57:05,191 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 133 transitions, 503 flow [2022-09-20 20:57:05,193 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 133 transitions, 490 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-09-20 20:57:05,196 INFO L231 Difference]: Finished difference. Result has 125 places, 115 transitions, 382 flow [2022-09-20 20:57:05,196 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=317, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=382, PETRI_PLACES=125, PETRI_TRANSITIONS=115} [2022-09-20 20:57:05,197 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 20 predicate places. [2022-09-20 20:57:05,197 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 115 transitions, 382 flow [2022-09-20 20:57:05,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 97.28571428571429) internal successors, (681), 7 states have internal predecessors, (681), 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 20:57:05,198 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:57:05,199 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] [2022-09-20 20:57:05,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 20:57:05,204 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:57:05,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:57:05,205 INFO L85 PathProgramCache]: Analyzing trace with hash 1635729045, now seen corresponding path program 1 times [2022-09-20 20:57:05,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:57:05,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924258852] [2022-09-20 20:57:05,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:57:05,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:57:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:57:05,316 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 20:57:05,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:57:05,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924258852] [2022-09-20 20:57:05,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924258852] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:57:05,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:57:05,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-09-20 20:57:05,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393642476] [2022-09-20 20:57:05,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:57:05,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-09-20 20:57:05,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:57:05,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-09-20 20:57:05,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-09-20 20:57:05,319 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 116 [2022-09-20 20:57:05,319 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 115 transitions, 382 flow. Second operand has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 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 20:57:05,319 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:57:05,319 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 116 [2022-09-20 20:57:05,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:57:05,740 INFO L130 PetriNetUnfolder]: 661/3509 cut-off events. [2022-09-20 20:57:05,740 INFO L131 PetriNetUnfolder]: For 1296/1435 co-relation queries the response was YES. [2022-09-20 20:57:05,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6333 conditions, 3509 events. 661/3509 cut-off events. For 1296/1435 co-relation queries the response was YES. Maximal size of possible extension queue 256. Compared 37706 event pairs, 149 based on Foata normal form. 50/3090 useless extension candidates. Maximal degree in co-relation 6305. Up to 448 conditions per place. [2022-09-20 20:57:05,769 INFO L137 encePairwiseOnDemand]: 102/116 looper letters, 46 selfloop transitions, 16 changer transitions 34/169 dead transitions. [2022-09-20 20:57:05,769 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 169 transitions, 662 flow [2022-09-20 20:57:05,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-09-20 20:57:05,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-09-20 20:57:05,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 620 transitions. [2022-09-20 20:57:05,771 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8908045977011494 [2022-09-20 20:57:05,771 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 620 transitions. [2022-09-20 20:57:05,771 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 620 transitions. [2022-09-20 20:57:05,771 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:57:05,771 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 620 transitions. [2022-09-20 20:57:05,773 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 103.33333333333333) internal successors, (620), 6 states have internal predecessors, (620), 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 20:57:05,775 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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 20:57:05,776 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 116.0) internal successors, (812), 7 states have internal predecessors, (812), 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 20:57:05,776 INFO L175 Difference]: Start difference. First operand has 125 places, 115 transitions, 382 flow. Second operand 6 states and 620 transitions. [2022-09-20 20:57:05,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 128 places, 169 transitions, 662 flow [2022-09-20 20:57:05,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 169 transitions, 655 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-09-20 20:57:05,789 INFO L231 Difference]: Finished difference. Result has 130 places, 111 transitions, 370 flow [2022-09-20 20:57:05,789 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=370, PETRI_PLACES=130, PETRI_TRANSITIONS=111} [2022-09-20 20:57:05,791 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 25 predicate places. [2022-09-20 20:57:05,791 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 111 transitions, 370 flow [2022-09-20 20:57:05,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 93.4) internal successors, (467), 5 states have internal predecessors, (467), 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 20:57:05,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:57:05,792 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] [2022-09-20 20:57:05,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 20:57:05,792 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:57:05,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:57:05,793 INFO L85 PathProgramCache]: Analyzing trace with hash 60688389, now seen corresponding path program 2 times [2022-09-20 20:57:05,793 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:57:05,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1857455430] [2022-09-20 20:57:05,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:57:05,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:57:05,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:57:05,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-09-20 20:57:05,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:57:05,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1857455430] [2022-09-20 20:57:05,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1857455430] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:57:05,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:57:05,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:57:05,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718468249] [2022-09-20 20:57:05,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:57:05,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:57:05,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:57:05,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:57:05,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:57:05,934 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 116 [2022-09-20 20:57:05,935 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 111 transitions, 370 flow. Second operand has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 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 20:57:05,935 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:57:05,935 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 116 [2022-09-20 20:57:05,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:57:06,169 INFO L130 PetriNetUnfolder]: 339/1440 cut-off events. [2022-09-20 20:57:06,169 INFO L131 PetriNetUnfolder]: For 994/1036 co-relation queries the response was YES. [2022-09-20 20:57:06,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3291 conditions, 1440 events. 339/1440 cut-off events. For 994/1036 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11930 event pairs, 96 based on Foata normal form. 31/1402 useless extension candidates. Maximal degree in co-relation 3243. Up to 182 conditions per place. [2022-09-20 20:57:06,178 INFO L137 encePairwiseOnDemand]: 106/116 looper letters, 69 selfloop transitions, 10 changer transitions 3/155 dead transitions. [2022-09-20 20:57:06,178 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 155 transitions, 748 flow [2022-09-20 20:57:06,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-09-20 20:57:06,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-09-20 20:57:06,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 506 transitions. [2022-09-20 20:57:06,180 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8724137931034482 [2022-09-20 20:57:06,180 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 506 transitions. [2022-09-20 20:57:06,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 506 transitions. [2022-09-20 20:57:06,181 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:57:06,181 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 506 transitions. [2022-09-20 20:57:06,182 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 101.2) internal successors, (506), 5 states have internal predecessors, (506), 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 20:57:06,183 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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 20:57:06,183 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 116.0) internal successors, (696), 6 states have internal predecessors, (696), 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 20:57:06,183 INFO L175 Difference]: Start difference. First operand has 130 places, 111 transitions, 370 flow. Second operand 5 states and 506 transitions. [2022-09-20 20:57:06,183 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 155 transitions, 748 flow [2022-09-20 20:57:06,187 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 155 transitions, 712 flow, removed 12 selfloop flow, removed 13 redundant places. [2022-09-20 20:57:06,188 INFO L231 Difference]: Finished difference. Result has 115 places, 114 transitions, 399 flow [2022-09-20 20:57:06,189 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=334, PETRI_DIFFERENCE_MINUEND_PLACES=109, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=399, PETRI_PLACES=115, PETRI_TRANSITIONS=114} [2022-09-20 20:57:06,190 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 10 predicate places. [2022-09-20 20:57:06,190 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 114 transitions, 399 flow [2022-09-20 20:57:06,191 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 92.83333333333333) internal successors, (557), 6 states have internal predecessors, (557), 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 20:57:06,191 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:57:06,191 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] [2022-09-20 20:57:06,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 20:57:06,191 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:57:06,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:57:06,191 INFO L85 PathProgramCache]: Analyzing trace with hash -221220277, now seen corresponding path program 3 times [2022-09-20 20:57:06,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:57:06,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403440056] [2022-09-20 20:57:06,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:57:06,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:57:06,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:57:06,260 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 20:57:06,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:57:06,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403440056] [2022-09-20 20:57:06,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403440056] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:57:06,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:57:06,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 20:57:06,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779622599] [2022-09-20 20:57:06,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:57:06,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 20:57:06,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:57:06,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 20:57:06,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-20 20:57:06,263 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 116 [2022-09-20 20:57:06,263 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 114 transitions, 399 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:57:06,263 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:57:06,263 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 116 [2022-09-20 20:57:06,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:57:06,394 INFO L130 PetriNetUnfolder]: 268/1310 cut-off events. [2022-09-20 20:57:06,394 INFO L131 PetriNetUnfolder]: For 1017/1017 co-relation queries the response was YES. [2022-09-20 20:57:06,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2791 conditions, 1310 events. 268/1310 cut-off events. For 1017/1017 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 10930 event pairs, 99 based on Foata normal form. 15/1265 useless extension candidates. Maximal degree in co-relation 1879. Up to 201 conditions per place. [2022-09-20 20:57:06,402 INFO L137 encePairwiseOnDemand]: 108/116 looper letters, 47 selfloop transitions, 18 changer transitions 4/144 dead transitions. [2022-09-20 20:57:06,402 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 144 transitions, 718 flow [2022-09-20 20:57:06,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-20 20:57:06,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-20 20:57:06,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 414 transitions. [2022-09-20 20:57:06,404 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8922413793103449 [2022-09-20 20:57:06,404 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 414 transitions. [2022-09-20 20:57:06,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 414 transitions. [2022-09-20 20:57:06,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:57:06,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 414 transitions. [2022-09-20 20:57:06,405 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 103.5) internal successors, (414), 4 states have internal predecessors, (414), 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 20:57:06,406 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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 20:57:06,406 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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 20:57:06,406 INFO L175 Difference]: Start difference. First operand has 115 places, 114 transitions, 399 flow. Second operand 4 states and 414 transitions. [2022-09-20 20:57:06,406 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 144 transitions, 718 flow [2022-09-20 20:57:06,408 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 144 transitions, 706 flow, removed 0 selfloop flow, removed 2 redundant places. [2022-09-20 20:57:06,410 INFO L231 Difference]: Finished difference. Result has 119 places, 123 transitions, 542 flow [2022-09-20 20:57:06,410 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=382, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=542, PETRI_PLACES=119, PETRI_TRANSITIONS=123} [2022-09-20 20:57:06,411 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 14 predicate places. [2022-09-20 20:57:06,411 INFO L495 AbstractCegarLoop]: Abstraction has has 119 places, 123 transitions, 542 flow [2022-09-20 20:57:06,411 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:57:06,411 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:57:06,411 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] [2022-09-20 20:57:06,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 20:57:06,412 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:57:06,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:57:06,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1055370329, now seen corresponding path program 1 times [2022-09-20 20:57:06,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:57:06,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746128931] [2022-09-20 20:57:06,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:57:06,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:57:06,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:57:06,497 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 20:57:06,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:57:06,497 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746128931] [2022-09-20 20:57:06,497 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746128931] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:57:06,497 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:57:06,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:57:06,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32512454] [2022-09-20 20:57:06,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:57:06,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:57:06,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:57:06,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:57:06,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:57:06,499 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 116 [2022-09-20 20:57:06,500 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 123 transitions, 542 flow. Second operand has 7 states, 7 states have (on average 97.28571428571429) internal successors, (681), 7 states have internal predecessors, (681), 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 20:57:06,501 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:57:06,501 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 116 [2022-09-20 20:57:06,501 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:57:06,636 INFO L130 PetriNetUnfolder]: 143/820 cut-off events. [2022-09-20 20:57:06,636 INFO L131 PetriNetUnfolder]: For 648/894 co-relation queries the response was YES. [2022-09-20 20:57:06,638 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1648 conditions, 820 events. 143/820 cut-off events. For 648/894 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6520 event pairs, 60 based on Foata normal form. 6/755 useless extension candidates. Maximal degree in co-relation 1115. Up to 129 conditions per place. [2022-09-20 20:57:06,640 INFO L137 encePairwiseOnDemand]: 108/116 looper letters, 21 selfloop transitions, 5 changer transitions 23/142 dead transitions. [2022-09-20 20:57:06,640 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 142 transitions, 664 flow [2022-09-20 20:57:06,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 20:57:06,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 20:57:06,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 892 transitions. [2022-09-20 20:57:06,642 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8544061302681992 [2022-09-20 20:57:06,642 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 892 transitions. [2022-09-20 20:57:06,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 892 transitions. [2022-09-20 20:57:06,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:57:06,642 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 892 transitions. [2022-09-20 20:57:06,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 99.11111111111111) internal successors, (892), 9 states have internal predecessors, (892), 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 20:57:06,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 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 20:57:06,645 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 116.0) internal successors, (1160), 10 states have internal predecessors, (1160), 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 20:57:06,645 INFO L175 Difference]: Start difference. First operand has 119 places, 123 transitions, 542 flow. Second operand 9 states and 892 transitions. [2022-09-20 20:57:06,645 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 142 transitions, 664 flow [2022-09-20 20:57:06,647 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 127 places, 142 transitions, 654 flow, removed 5 selfloop flow, removed 0 redundant places. [2022-09-20 20:57:06,649 INFO L231 Difference]: Finished difference. Result has 134 places, 114 transitions, 447 flow [2022-09-20 20:57:06,649 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=532, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=447, PETRI_PLACES=134, PETRI_TRANSITIONS=114} [2022-09-20 20:57:06,649 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 29 predicate places. [2022-09-20 20:57:06,650 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 114 transitions, 447 flow [2022-09-20 20:57:06,650 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 97.28571428571429) internal successors, (681), 7 states have internal predecessors, (681), 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 20:57:06,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:57:06,650 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] [2022-09-20 20:57:06,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 20:57:06,650 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-09-20 20:57:06,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:57:06,651 INFO L85 PathProgramCache]: Analyzing trace with hash 185078007, now seen corresponding path program 4 times [2022-09-20 20:57:06,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:57:06,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220287166] [2022-09-20 20:57:06,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:57:06,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:57:06,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:57:06,691 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 20:57:06,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:57:06,691 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220287166] [2022-09-20 20:57:06,691 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1220287166] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:57:06,691 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:57:06,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-09-20 20:57:06,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148939746] [2022-09-20 20:57:06,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:57:06,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-09-20 20:57:06,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:57:06,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-09-20 20:57:06,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-09-20 20:57:06,693 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 92 out of 116 [2022-09-20 20:57:06,693 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 114 transitions, 447 flow. Second operand has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:57:06,693 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:57:06,693 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 92 of 116 [2022-09-20 20:57:06,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:57:06,792 INFO L130 PetriNetUnfolder]: 155/982 cut-off events. [2022-09-20 20:57:06,792 INFO L131 PetriNetUnfolder]: For 1084/1084 co-relation queries the response was YES. [2022-09-20 20:57:06,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2264 conditions, 982 events. 155/982 cut-off events. For 1084/1084 co-relation queries the response was YES. Maximal size of possible extension queue 76. Compared 8114 event pairs, 47 based on Foata normal form. 26/977 useless extension candidates. Maximal degree in co-relation 2243. Up to 161 conditions per place. [2022-09-20 20:57:06,796 INFO L137 encePairwiseOnDemand]: 109/116 looper letters, 0 selfloop transitions, 0 changer transitions 129/129 dead transitions. [2022-09-20 20:57:06,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 129 transitions, 674 flow [2022-09-20 20:57:06,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-09-20 20:57:06,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-09-20 20:57:06,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 410 transitions. [2022-09-20 20:57:06,797 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8836206896551724 [2022-09-20 20:57:06,797 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 410 transitions. [2022-09-20 20:57:06,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 410 transitions. [2022-09-20 20:57:06,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:57:06,797 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 410 transitions. [2022-09-20 20:57:06,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 102.5) internal successors, (410), 4 states have internal predecessors, (410), 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 20:57:06,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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 20:57:06,799 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 116.0) internal successors, (580), 5 states have internal predecessors, (580), 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 20:57:06,799 INFO L175 Difference]: Start difference. First operand has 134 places, 114 transitions, 447 flow. Second operand 4 states and 410 transitions. [2022-09-20 20:57:06,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 129 transitions, 674 flow [2022-09-20 20:57:06,802 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 129 transitions, 654 flow, removed 9 selfloop flow, removed 3 redundant places. [2022-09-20 20:57:06,803 INFO L231 Difference]: Finished difference. Result has 124 places, 0 transitions, 0 flow [2022-09-20 20:57:06,803 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=116, PETRI_DIFFERENCE_MINUEND_FLOW=415, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=124, PETRI_TRANSITIONS=0} [2022-09-20 20:57:06,804 INFO L287 CegarLoopForPetriNet]: 105 programPoint places, 19 predicate places. [2022-09-20 20:57:06,804 INFO L495 AbstractCegarLoop]: Abstraction has has 124 places, 0 transitions, 0 flow [2022-09-20 20:57:06,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.75) internal successors, (383), 4 states have internal predecessors, (383), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-09-20 20:57:06,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-09-20 20:57:06,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-09-20 20:57:06,806 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-09-20 20:57:06,807 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-09-20 20:57:06,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-09-20 20:57:06,807 INFO L444 BasicCegarLoop]: Path program histogram: [4, 2, 1, 1, 1] [2022-09-20 20:57:06,809 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 20:57:06,809 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 20:57:06,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 08:57:06 BasicIcfg [2022-09-20 20:57:06,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 20:57:06,813 INFO L158 Benchmark]: Toolchain (without parser) took 3743.24ms. Allocated memory was 201.3MB in the beginning and 360.7MB in the end (delta: 159.4MB). Free memory was 146.8MB in the beginning and 242.7MB in the end (delta: -95.9MB). Peak memory consumption was 64.2MB. Max. memory is 8.0GB. [2022-09-20 20:57:06,813 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 201.3MB. Free memory is still 163.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 20:57:06,813 INFO L158 Benchmark]: CACSL2BoogieTranslator took 214.06ms. Allocated memory was 201.3MB in the beginning and 263.2MB in the end (delta: 61.9MB). Free memory was 146.6MB in the beginning and 238.8MB in the end (delta: -92.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. [2022-09-20 20:57:06,813 INFO L158 Benchmark]: Boogie Procedure Inliner took 24.11ms. Allocated memory is still 263.2MB. Free memory was 238.8MB in the beginning and 237.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 20:57:06,814 INFO L158 Benchmark]: Boogie Preprocessor took 15.37ms. Allocated memory is still 263.2MB. Free memory was 237.2MB in the beginning and 235.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-20 20:57:06,814 INFO L158 Benchmark]: RCFGBuilder took 381.80ms. Allocated memory is still 263.2MB. Free memory was 235.7MB in the beginning and 222.5MB in the end (delta: 13.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-09-20 20:57:06,814 INFO L158 Benchmark]: TraceAbstraction took 3101.25ms. Allocated memory was 263.2MB in the beginning and 360.7MB in the end (delta: 97.5MB). Free memory was 222.0MB in the beginning and 242.7MB in the end (delta: -20.7MB). Peak memory consumption was 77.8MB. Max. memory is 8.0GB. [2022-09-20 20:57:06,815 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 201.3MB. Free memory is still 163.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 214.06ms. Allocated memory was 201.3MB in the beginning and 263.2MB in the end (delta: 61.9MB). Free memory was 146.6MB in the beginning and 238.8MB in the end (delta: -92.2MB). Peak memory consumption was 14.7MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 24.11ms. Allocated memory is still 263.2MB. Free memory was 238.8MB in the beginning and 237.2MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.37ms. Allocated memory is still 263.2MB. Free memory was 237.2MB in the beginning and 235.7MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 381.80ms. Allocated memory is still 263.2MB. Free memory was 235.7MB in the beginning and 222.5MB in the end (delta: 13.2MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3101.25ms. Allocated memory was 263.2MB in the beginning and 360.7MB in the end (delta: 97.5MB). Free memory was 222.0MB in the beginning and 242.7MB in the end (delta: -20.7MB). Peak memory consumption was 77.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 76]: 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 7 procedures, 149 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.0s, OverallIterations: 9, TraceHistogramMax: 1, PathProgramHistogramMax: 4, EmptinessCheckTime: 0.0s, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 204 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 204 mSDsluCounter, 347 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 470 mSDsCounter, 37 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 693 IncrementalHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 37 mSolverCounterUnsat, 126 mSDtfsCounter, 693 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=542occurred in iteration=7, InterpolantAutomatonStates: 57, 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, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 764 NumberOfCodeBlocks, 764 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 755 ConstructedInterpolants, 0 QuantifiedInterpolants, 2600 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 9 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 20:57:06,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...