/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/pthread-wmm/safe021_tso.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-?-0612a5f-m [2022-09-20 20:41:23,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-09-20 20:41:23,904 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-09-20 20:41:23,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-09-20 20:41:23,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-09-20 20:41:23,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-09-20 20:41:23,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-09-20 20:41:23,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-09-20 20:41:23,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-09-20 20:41:23,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-09-20 20:41:23,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-09-20 20:41:23,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-09-20 20:41:23,958 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-09-20 20:41:23,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-09-20 20:41:23,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-09-20 20:41:23,962 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-09-20 20:41:23,963 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-09-20 20:41:23,964 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-09-20 20:41:23,966 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-09-20 20:41:23,969 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-09-20 20:41:23,970 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-09-20 20:41:23,972 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-09-20 20:41:23,973 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-09-20 20:41:23,974 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-09-20 20:41:23,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-09-20 20:41:23,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-09-20 20:41:23,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-09-20 20:41:23,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-09-20 20:41:23,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-09-20 20:41:23,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-09-20 20:41:23,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-09-20 20:41:23,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-09-20 20:41:23,984 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-09-20 20:41:23,985 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-09-20 20:41:23,985 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-09-20 20:41:23,986 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-09-20 20:41:23,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-09-20 20:41:23,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-09-20 20:41:23,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-09-20 20:41:23,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-09-20 20:41:23,988 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-09-20 20:41:23,991 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 20:41:24,016 INFO L113 SettingsManager]: Loading preferences was successful [2022-09-20 20:41:24,017 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-09-20 20:41:24,018 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-09-20 20:41:24,018 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-09-20 20:41:24,018 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-09-20 20:41:24,018 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-09-20 20:41:24,019 INFO L138 SettingsManager]: * Use SBE=true [2022-09-20 20:41:24,019 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-09-20 20:41:24,019 INFO L138 SettingsManager]: * sizeof long=4 [2022-09-20 20:41:24,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-09-20 20:41:24,020 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-09-20 20:41:24,020 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-09-20 20:41:24,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-09-20 20:41:24,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-09-20 20:41:24,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-09-20 20:41:24,020 INFO L138 SettingsManager]: * sizeof long double=12 [2022-09-20 20:41:24,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-09-20 20:41:24,021 INFO L138 SettingsManager]: * Use constant arrays=true [2022-09-20 20:41:24,021 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-09-20 20:41:24,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-09-20 20:41:24,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-09-20 20:41:24,021 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-09-20 20:41:24,021 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-09-20 20:41:24,021 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:41:24,022 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-09-20 20:41:24,022 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-09-20 20:41:24,022 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-09-20 20:41:24,022 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-09-20 20:41:24,022 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-09-20 20:41:24,022 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-09-20 20:41:24,022 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-09-20 20:41:24,022 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2022-09-20 20:41:24,260 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-09-20 20:41:24,283 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-09-20 20:41:24,287 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-09-20 20:41:24,288 INFO L271 PluginConnector]: Initializing CDTParser... [2022-09-20 20:41:24,288 INFO L275 PluginConnector]: CDTParser initialized [2022-09-20 20:41:24,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe021_tso.i [2022-09-20 20:41:24,361 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cd63d479/f07b4152278e453098d96431acfb4036/FLAG82eb1b606 [2022-09-20 20:41:24,782 INFO L306 CDTParser]: Found 1 translation units. [2022-09-20 20:41:24,782 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.i [2022-09-20 20:41:24,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cd63d479/f07b4152278e453098d96431acfb4036/FLAG82eb1b606 [2022-09-20 20:41:25,103 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1cd63d479/f07b4152278e453098d96431acfb4036 [2022-09-20 20:41:25,105 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-09-20 20:41:25,106 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-09-20 20:41:25,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-09-20 20:41:25,107 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-09-20 20:41:25,113 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-09-20 20:41:25,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:41:25" (1/1) ... [2022-09-20 20:41:25,114 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bb83435 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:41:25, skipping insertion in model container [2022-09-20 20:41:25,114 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 08:41:25" (1/1) ... [2022-09-20 20:41:25,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-09-20 20:41:25,174 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-09-20 20:41:25,322 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.i[945,958] [2022-09-20 20:41:25,453 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:41:25,459 INFO L203 MainTranslator]: Completed pre-run [2022-09-20 20:41:25,467 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe021_tso.i[945,958] [2022-09-20 20:41:25,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-09-20 20:41:25,523 INFO L208 MainTranslator]: Completed translation [2022-09-20 20:41:25,524 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:41:25 WrapperNode [2022-09-20 20:41:25,524 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-09-20 20:41:25,525 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-09-20 20:41:25,525 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-09-20 20:41:25,525 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-09-20 20:41:25,530 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:41:25" (1/1) ... [2022-09-20 20:41:25,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:41:25" (1/1) ... [2022-09-20 20:41:25,565 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 71 [2022-09-20 20:41:25,565 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-09-20 20:41:25,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-09-20 20:41:25,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-09-20 20:41:25,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-09-20 20:41:25,573 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:41:25" (1/1) ... [2022-09-20 20:41:25,573 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:41:25" (1/1) ... [2022-09-20 20:41:25,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:41:25" (1/1) ... [2022-09-20 20:41:25,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:41:25" (1/1) ... [2022-09-20 20:41:25,594 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:41:25" (1/1) ... [2022-09-20 20:41:25,595 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:41:25" (1/1) ... [2022-09-20 20:41:25,597 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:41:25" (1/1) ... [2022-09-20 20:41:25,599 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-09-20 20:41:25,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-09-20 20:41:25,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-09-20 20:41:25,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-09-20 20:41:25,615 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:41:25" (1/1) ... [2022-09-20 20:41:25,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-09-20 20:41:25,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-09-20 20:41:25,649 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 20:41:25,671 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 20:41:25,693 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-09-20 20:41:25,694 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-09-20 20:41:25,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-09-20 20:41:25,694 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-09-20 20:41:25,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-09-20 20:41:25,694 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2022-09-20 20:41:25,694 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2022-09-20 20:41:25,695 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2022-09-20 20:41:25,695 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2022-09-20 20:41:25,695 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2022-09-20 20:41:25,698 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2022-09-20 20:41:25,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-09-20 20:41:25,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-09-20 20:41:25,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-09-20 20:41:25,699 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-09-20 20:41:25,700 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 20:41:25,813 INFO L234 CfgBuilder]: Building ICFG [2022-09-20 20:41:25,814 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-09-20 20:41:25,988 INFO L275 CfgBuilder]: Performing block encoding [2022-09-20 20:41:25,993 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-09-20 20:41:25,994 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-09-20 20:41:25,996 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:41:25 BoogieIcfgContainer [2022-09-20 20:41:25,996 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-09-20 20:41:25,998 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-09-20 20:41:25,998 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-09-20 20:41:26,008 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-09-20 20:41:26,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 08:41:25" (1/3) ... [2022-09-20 20:41:26,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f052e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:41:26, skipping insertion in model container [2022-09-20 20:41:26,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 08:41:25" (2/3) ... [2022-09-20 20:41:26,009 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f052e5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 08:41:26, skipping insertion in model container [2022-09-20 20:41:26,009 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 08:41:25" (3/3) ... [2022-09-20 20:41:26,010 INFO L112 eAbstractionObserver]: Analyzing ICFG safe021_tso.i [2022-09-20 20:41:26,026 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-09-20 20:41:26,027 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-09-20 20:41:26,027 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-09-20 20:41:26,088 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-09-20 20:41:26,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 100 places, 92 transitions, 199 flow [2022-09-20 20:41:26,160 INFO L130 PetriNetUnfolder]: 2/89 cut-off events. [2022-09-20 20:41:26,161 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 20:41:26,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99 conditions, 89 events. 2/89 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 46 event pairs, 0 based on Foata normal form. 0/86 useless extension candidates. Maximal degree in co-relation 68. Up to 2 conditions per place. [2022-09-20 20:41:26,164 INFO L82 GeneralOperation]: Start removeDead. Operand has 100 places, 92 transitions, 199 flow [2022-09-20 20:41:26,168 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 75 transitions, 159 flow [2022-09-20 20:41:26,177 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-09-20 20:41:26,183 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;@4a90caff, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-09-20 20:41:26,183 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-09-20 20:41:26,203 INFO L130 PetriNetUnfolder]: 1/74 cut-off events. [2022-09-20 20:41:26,203 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-09-20 20:41:26,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:41:26,204 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] [2022-09-20 20:41:26,205 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 20:41:26,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:41:26,210 INFO L85 PathProgramCache]: Analyzing trace with hash -1402349347, now seen corresponding path program 1 times [2022-09-20 20:41:26,218 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:41:26,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665097882] [2022-09-20 20:41:26,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:41:26,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:41:26,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:41:26,685 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 20:41:26,686 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:41:26,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665097882] [2022-09-20 20:41:26,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665097882] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:41:26,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:41:26,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:41:26,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848256990] [2022-09-20 20:41:26,694 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:41:26,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:41:26,704 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:41:26,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:41:26,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:41:26,752 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 92 [2022-09-20 20:41:26,765 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 75 transitions, 159 flow. Second operand has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 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 20:41:26,765 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:41:26,765 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 92 [2022-09-20 20:41:26,766 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:41:27,137 INFO L130 PetriNetUnfolder]: 199/635 cut-off events. [2022-09-20 20:41:27,137 INFO L131 PetriNetUnfolder]: For 8/8 co-relation queries the response was YES. [2022-09-20 20:41:27,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1026 conditions, 635 events. 199/635 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 3766 event pairs, 34 based on Foata normal form. 22/636 useless extension candidates. Maximal degree in co-relation 989. Up to 151 conditions per place. [2022-09-20 20:41:27,148 INFO L137 encePairwiseOnDemand]: 80/92 looper letters, 18 selfloop transitions, 7 changer transitions 31/114 dead transitions. [2022-09-20 20:41:27,148 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 114 transitions, 352 flow [2022-09-20 20:41:27,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 20:41:27,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 20:41:27,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 708 transitions. [2022-09-20 20:41:27,172 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.855072463768116 [2022-09-20 20:41:27,172 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 708 transitions. [2022-09-20 20:41:27,173 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 708 transitions. [2022-09-20 20:41:27,177 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:41:27,179 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 708 transitions. [2022-09-20 20:41:27,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 78.66666666666667) internal successors, (708), 9 states have internal predecessors, (708), 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 20:41:27,194 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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 20:41:27,194 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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 20:41:27,196 INFO L175 Difference]: Start difference. First operand has 84 places, 75 transitions, 159 flow. Second operand 9 states and 708 transitions. [2022-09-20 20:41:27,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 114 transitions, 352 flow [2022-09-20 20:41:27,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 114 transitions, 348 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-09-20 20:41:27,202 INFO L231 Difference]: Finished difference. Result has 97 places, 78 transitions, 236 flow [2022-09-20 20:41:27,204 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=236, PETRI_PLACES=97, PETRI_TRANSITIONS=78} [2022-09-20 20:41:27,208 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 13 predicate places. [2022-09-20 20:41:27,209 INFO L495 AbstractCegarLoop]: Abstraction has has 97 places, 78 transitions, 236 flow [2022-09-20 20:41:27,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 74.0) internal successors, (444), 6 states have internal predecessors, (444), 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 20:41:27,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:41:27,210 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] [2022-09-20 20:41:27,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-09-20 20:41:27,211 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 20:41:27,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:41:27,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1391425404, now seen corresponding path program 1 times [2022-09-20 20:41:27,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:41:27,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938801742] [2022-09-20 20:41:27,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:41:27,214 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:41:27,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:41:27,383 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 20:41:27,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:41:27,384 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938801742] [2022-09-20 20:41:27,384 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938801742] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:41:27,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:41:27,385 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:41:27,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275008] [2022-09-20 20:41:27,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:41:27,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:41:27,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:41:27,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:41:27,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:41:27,388 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 92 [2022-09-20 20:41:27,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 78 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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 20:41:27,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:41:27,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 92 [2022-09-20 20:41:27,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:41:27,543 INFO L130 PetriNetUnfolder]: 62/329 cut-off events. [2022-09-20 20:41:27,545 INFO L131 PetriNetUnfolder]: For 409/459 co-relation queries the response was YES. [2022-09-20 20:41:27,552 INFO L83 FinitePrefix]: Finished finitePrefix Result has 811 conditions, 329 events. 62/329 cut-off events. For 409/459 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 1706 event pairs, 20 based on Foata normal form. 13/321 useless extension candidates. Maximal degree in co-relation 765. Up to 88 conditions per place. [2022-09-20 20:41:27,554 INFO L137 encePairwiseOnDemand]: 86/92 looper letters, 9 selfloop transitions, 3 changer transitions 13/91 dead transitions. [2022-09-20 20:41:27,555 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 91 transitions, 366 flow [2022-09-20 20:41:27,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 20:41:27,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 20:41:27,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 716 transitions. [2022-09-20 20:41:27,558 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8647342995169082 [2022-09-20 20:41:27,558 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 716 transitions. [2022-09-20 20:41:27,558 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 716 transitions. [2022-09-20 20:41:27,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:41:27,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 716 transitions. [2022-09-20 20:41:27,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 79.55555555555556) internal successors, (716), 9 states have internal predecessors, (716), 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 20:41:27,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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 20:41:27,564 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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 20:41:27,564 INFO L175 Difference]: Start difference. First operand has 97 places, 78 transitions, 236 flow. Second operand 9 states and 716 transitions. [2022-09-20 20:41:27,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 91 transitions, 366 flow [2022-09-20 20:41:27,570 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 91 transitions, 324 flow, removed 11 selfloop flow, removed 2 redundant places. [2022-09-20 20:41:27,573 INFO L231 Difference]: Finished difference. Result has 104 places, 78 transitions, 237 flow [2022-09-20 20:41:27,573 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=214, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=237, PETRI_PLACES=104, PETRI_TRANSITIONS=78} [2022-09-20 20:41:27,574 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 20 predicate places. [2022-09-20 20:41:27,574 INFO L495 AbstractCegarLoop]: Abstraction has has 104 places, 78 transitions, 237 flow [2022-09-20 20:41:27,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 78.66666666666667) internal successors, (472), 6 states have internal predecessors, (472), 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 20:41:27,575 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:41:27,575 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] [2022-09-20 20:41:27,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-09-20 20:41:27,575 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 20:41:27,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:41:27,578 INFO L85 PathProgramCache]: Analyzing trace with hash -2084116356, now seen corresponding path program 1 times [2022-09-20 20:41:27,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:41:27,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356045348] [2022-09-20 20:41:27,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:41:27,578 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:41:27,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:41:27,761 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 20:41:27,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:41:27,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356045348] [2022-09-20 20:41:27,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356045348] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:41:27,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:41:27,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:41:27,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091917403] [2022-09-20 20:41:27,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:41:27,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:41:27,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:41:27,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:41:27,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:41:27,767 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 76 out of 92 [2022-09-20 20:41:27,767 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 78 transitions, 237 flow. Second operand has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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 20:41:27,768 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:41:27,768 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 76 of 92 [2022-09-20 20:41:27,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:41:27,915 INFO L130 PetriNetUnfolder]: 84/386 cut-off events. [2022-09-20 20:41:27,916 INFO L131 PetriNetUnfolder]: For 615/741 co-relation queries the response was YES. [2022-09-20 20:41:27,917 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1013 conditions, 386 events. 84/386 cut-off events. For 615/741 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 2163 event pairs, 29 based on Foata normal form. 12/376 useless extension candidates. Maximal degree in co-relation 962. Up to 86 conditions per place. [2022-09-20 20:41:27,919 INFO L137 encePairwiseOnDemand]: 85/92 looper letters, 14 selfloop transitions, 5 changer transitions 22/105 dead transitions. [2022-09-20 20:41:27,919 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 105 transitions, 483 flow [2022-09-20 20:41:27,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-09-20 20:41:27,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-09-20 20:41:27,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 721 transitions. [2022-09-20 20:41:27,922 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8707729468599034 [2022-09-20 20:41:27,922 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 721 transitions. [2022-09-20 20:41:27,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 721 transitions. [2022-09-20 20:41:27,922 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:41:27,923 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 721 transitions. [2022-09-20 20:41:27,925 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 80.11111111111111) internal successors, (721), 9 states have internal predecessors, (721), 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 20:41:27,927 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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 20:41:27,928 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 92.0) internal successors, (920), 10 states have internal predecessors, (920), 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 20:41:27,929 INFO L175 Difference]: Start difference. First operand has 104 places, 78 transitions, 237 flow. Second operand 9 states and 721 transitions. [2022-09-20 20:41:27,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 105 transitions, 483 flow [2022-09-20 20:41:27,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 105 transitions, 439 flow, removed 19 selfloop flow, removed 11 redundant places. [2022-09-20 20:41:27,935 INFO L231 Difference]: Finished difference. Result has 102 places, 81 transitions, 274 flow [2022-09-20 20:41:27,935 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=209, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=274, PETRI_PLACES=102, PETRI_TRANSITIONS=81} [2022-09-20 20:41:27,937 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 18 predicate places. [2022-09-20 20:41:27,937 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 81 transitions, 274 flow [2022-09-20 20:41:27,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 77.66666666666667) internal successors, (466), 6 states have internal predecessors, (466), 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 20:41:27,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:41:27,938 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] [2022-09-20 20:41:27,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-09-20 20:41:27,938 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 20:41:27,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:41:27,939 INFO L85 PathProgramCache]: Analyzing trace with hash 744000701, now seen corresponding path program 1 times [2022-09-20 20:41:27,940 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:41:27,940 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256163114] [2022-09-20 20:41:27,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:41:27,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:41:27,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:41:28,100 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 20:41:28,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:41:28,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256163114] [2022-09-20 20:41:28,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256163114] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:41:28,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:41:28,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:41:28,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743720206] [2022-09-20 20:41:28,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:41:28,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:41:28,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:41:28,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:41:28,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:41:28,106 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-09-20 20:41:28,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 81 transitions, 274 flow. Second operand has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 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 20:41:28,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:41:28,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-09-20 20:41:28,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:41:28,267 INFO L130 PetriNetUnfolder]: 73/433 cut-off events. [2022-09-20 20:41:28,267 INFO L131 PetriNetUnfolder]: For 959/1178 co-relation queries the response was YES. [2022-09-20 20:41:28,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1102 conditions, 433 events. 73/433 cut-off events. For 959/1178 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2585 event pairs, 37 based on Foata normal form. 16/417 useless extension candidates. Maximal degree in co-relation 1052. Up to 79 conditions per place. [2022-09-20 20:41:28,271 INFO L137 encePairwiseOnDemand]: 84/92 looper letters, 10 selfloop transitions, 5 changer transitions 16/95 dead transitions. [2022-09-20 20:41:28,271 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 105 places, 95 transitions, 402 flow [2022-09-20 20:41:28,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 20:41:28,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 20:41:28,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 778 transitions. [2022-09-20 20:41:28,273 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8456521739130435 [2022-09-20 20:41:28,273 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 778 transitions. [2022-09-20 20:41:28,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 778 transitions. [2022-09-20 20:41:28,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:41:28,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 778 transitions. [2022-09-20 20:41:28,276 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 77.8) internal successors, (778), 10 states have internal predecessors, (778), 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 20:41:28,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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 20:41:28,278 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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 20:41:28,278 INFO L175 Difference]: Start difference. First operand has 102 places, 81 transitions, 274 flow. Second operand 10 states and 778 transitions. [2022-09-20 20:41:28,278 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 105 places, 95 transitions, 402 flow [2022-09-20 20:41:28,282 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 101 places, 95 transitions, 381 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-09-20 20:41:28,284 INFO L231 Difference]: Finished difference. Result has 109 places, 78 transitions, 260 flow [2022-09-20 20:41:28,284 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=261, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=260, PETRI_PLACES=109, PETRI_TRANSITIONS=78} [2022-09-20 20:41:28,285 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 25 predicate places. [2022-09-20 20:41:28,285 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 78 transitions, 260 flow [2022-09-20 20:41:28,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.71428571428571) internal successors, (537), 7 states have internal predecessors, (537), 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 20:41:28,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:41:28,290 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] [2022-09-20 20:41:28,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-09-20 20:41:28,291 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 20:41:28,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:41:28,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1310555509, now seen corresponding path program 1 times [2022-09-20 20:41:28,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:41:28,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219805078] [2022-09-20 20:41:28,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:41:28,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:41:28,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:41:28,449 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 20:41:28,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:41:28,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219805078] [2022-09-20 20:41:28,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219805078] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:41:28,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:41:28,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-09-20 20:41:28,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660858647] [2022-09-20 20:41:28,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:41:28,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-09-20 20:41:28,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:41:28,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-09-20 20:41:28,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-09-20 20:41:28,453 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-09-20 20:41:28,453 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 78 transitions, 260 flow. Second operand has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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 20:41:28,454 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:41:28,454 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-09-20 20:41:28,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:41:28,647 INFO L130 PetriNetUnfolder]: 336/898 cut-off events. [2022-09-20 20:41:28,647 INFO L131 PetriNetUnfolder]: For 765/795 co-relation queries the response was YES. [2022-09-20 20:41:28,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1972 conditions, 898 events. 336/898 cut-off events. For 765/795 co-relation queries the response was YES. Maximal size of possible extension queue 113. Compared 6172 event pairs, 32 based on Foata normal form. 0/817 useless extension candidates. Maximal degree in co-relation 1915. Up to 231 conditions per place. [2022-09-20 20:41:28,657 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 26 selfloop transitions, 15 changer transitions 5/110 dead transitions. [2022-09-20 20:41:28,657 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 110 transitions, 420 flow [2022-09-20 20:41:28,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-09-20 20:41:28,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-09-20 20:41:28,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 798 transitions. [2022-09-20 20:41:28,660 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8673913043478261 [2022-09-20 20:41:28,660 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 798 transitions. [2022-09-20 20:41:28,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 798 transitions. [2022-09-20 20:41:28,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:41:28,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 798 transitions. [2022-09-20 20:41:28,663 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 79.8) internal successors, (798), 10 states have internal predecessors, (798), 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 20:41:28,667 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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 20:41:28,667 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 92.0) internal successors, (1012), 11 states have internal predecessors, (1012), 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 20:41:28,668 INFO L175 Difference]: Start difference. First operand has 109 places, 78 transitions, 260 flow. Second operand 10 states and 798 transitions. [2022-09-20 20:41:28,668 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 110 transitions, 420 flow [2022-09-20 20:41:28,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 110 transitions, 386 flow, removed 11 selfloop flow, removed 10 redundant places. [2022-09-20 20:41:28,672 INFO L231 Difference]: Finished difference. Result has 108 places, 91 transitions, 335 flow [2022-09-20 20:41:28,673 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=93, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=78, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=69, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=335, PETRI_PLACES=108, PETRI_TRANSITIONS=91} [2022-09-20 20:41:28,675 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 24 predicate places. [2022-09-20 20:41:28,675 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 91 transitions, 335 flow [2022-09-20 20:41:28,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 76.66666666666667) internal successors, (460), 6 states have internal predecessors, (460), 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 20:41:28,676 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:41:28,676 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] [2022-09-20 20:41:28,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-09-20 20:41:28,676 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 20:41:28,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:41:28,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1705812994, now seen corresponding path program 1 times [2022-09-20 20:41:28,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:41:28,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503940324] [2022-09-20 20:41:28,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:41:28,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:41:28,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:41:28,784 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 20:41:28,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:41:28,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503940324] [2022-09-20 20:41:28,785 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503940324] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:41:28,785 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:41:28,785 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:41:28,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101931150] [2022-09-20 20:41:28,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:41:28,786 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:41:28,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:41:28,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:41:28,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:41:28,787 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-09-20 20:41:28,788 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 91 transitions, 335 flow. Second operand has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 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 20:41:28,788 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:41:28,788 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-09-20 20:41:28,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:41:29,036 INFO L130 PetriNetUnfolder]: 296/847 cut-off events. [2022-09-20 20:41:29,036 INFO L131 PetriNetUnfolder]: For 1917/2050 co-relation queries the response was YES. [2022-09-20 20:41:29,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2808 conditions, 847 events. 296/847 cut-off events. For 1917/2050 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 5882 event pairs, 7 based on Foata normal form. 55/858 useless extension candidates. Maximal degree in co-relation 2753. Up to 311 conditions per place. [2022-09-20 20:41:29,044 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 26 selfloop transitions, 28 changer transitions 11/129 dead transitions. [2022-09-20 20:41:29,044 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 129 transitions, 701 flow [2022-09-20 20:41:29,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-09-20 20:41:29,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-09-20 20:41:29,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1036 transitions. [2022-09-20 20:41:29,047 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8662207357859532 [2022-09-20 20:41:29,047 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1036 transitions. [2022-09-20 20:41:29,047 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1036 transitions. [2022-09-20 20:41:29,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:41:29,048 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1036 transitions. [2022-09-20 20:41:29,050 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 79.6923076923077) internal successors, (1036), 13 states have internal predecessors, (1036), 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 20:41:29,053 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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 20:41:29,054 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 92.0) internal successors, (1288), 14 states have internal predecessors, (1288), 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 20:41:29,054 INFO L175 Difference]: Start difference. First operand has 108 places, 91 transitions, 335 flow. Second operand 13 states and 1036 transitions. [2022-09-20 20:41:29,054 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 129 transitions, 701 flow [2022-09-20 20:41:29,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 129 transitions, 699 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-09-20 20:41:29,063 INFO L231 Difference]: Finished difference. Result has 125 places, 108 transitions, 559 flow [2022-09-20 20:41:29,063 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=333, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=559, PETRI_PLACES=125, PETRI_TRANSITIONS=108} [2022-09-20 20:41:29,065 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 41 predicate places. [2022-09-20 20:41:29,065 INFO L495 AbstractCegarLoop]: Abstraction has has 125 places, 108 transitions, 559 flow [2022-09-20 20:41:29,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.57142857142857) internal successors, (536), 7 states have internal predecessors, (536), 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 20:41:29,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:41:29,066 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] [2022-09-20 20:41:29,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-09-20 20:41:29,066 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 20:41:29,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:41:29,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1489407803, now seen corresponding path program 1 times [2022-09-20 20:41:29,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:41:29,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160049036] [2022-09-20 20:41:29,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:41:29,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:41:29,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:41:29,176 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 20:41:29,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:41:29,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160049036] [2022-09-20 20:41:29,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160049036] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:41:29,177 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:41:29,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-09-20 20:41:29,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797377596] [2022-09-20 20:41:29,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:41:29,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-09-20 20:41:29,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:41:29,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-09-20 20:41:29,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-09-20 20:41:29,184 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-09-20 20:41:29,185 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 108 transitions, 559 flow. Second operand has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 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 20:41:29,185 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:41:29,185 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-09-20 20:41:29,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:41:29,458 INFO L130 PetriNetUnfolder]: 207/674 cut-off events. [2022-09-20 20:41:29,458 INFO L131 PetriNetUnfolder]: For 3155/3515 co-relation queries the response was YES. [2022-09-20 20:41:29,462 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2892 conditions, 674 events. 207/674 cut-off events. For 3155/3515 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 4892 event pairs, 0 based on Foata normal form. 72/699 useless extension candidates. Maximal degree in co-relation 2829. Up to 231 conditions per place. [2022-09-20 20:41:29,464 INFO L137 encePairwiseOnDemand]: 82/92 looper letters, 22 selfloop transitions, 32 changer transitions 19/137 dead transitions. [2022-09-20 20:41:29,464 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 137 transitions, 899 flow [2022-09-20 20:41:29,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-09-20 20:41:29,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2022-09-20 20:41:29,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1258 transitions. [2022-09-20 20:41:29,468 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8546195652173914 [2022-09-20 20:41:29,468 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1258 transitions. [2022-09-20 20:41:29,468 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1258 transitions. [2022-09-20 20:41:29,469 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:41:29,469 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1258 transitions. [2022-09-20 20:41:29,472 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 78.625) internal successors, (1258), 16 states have internal predecessors, (1258), 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 20:41:29,475 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 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 20:41:29,475 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 92.0) internal successors, (1564), 17 states have internal predecessors, (1564), 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 20:41:29,475 INFO L175 Difference]: Start difference. First operand has 125 places, 108 transitions, 559 flow. Second operand 16 states and 1258 transitions. [2022-09-20 20:41:29,475 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 137 transitions, 899 flow [2022-09-20 20:41:29,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 137 transitions, 802 flow, removed 40 selfloop flow, removed 11 redundant places. [2022-09-20 20:41:29,491 INFO L231 Difference]: Finished difference. Result has 136 places, 109 transitions, 576 flow [2022-09-20 20:41:29,491 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=470, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=29, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=576, PETRI_PLACES=136, PETRI_TRANSITIONS=109} [2022-09-20 20:41:29,492 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 52 predicate places. [2022-09-20 20:41:29,492 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 109 transitions, 576 flow [2022-09-20 20:41:29,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 76.5) internal successors, (612), 8 states have internal predecessors, (612), 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 20:41:29,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-09-20 20:41:29,493 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] [2022-09-20 20:41:29,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-09-20 20:41:29,493 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 20:41:29,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-09-20 20:41:29,494 INFO L85 PathProgramCache]: Analyzing trace with hash -201382405, now seen corresponding path program 1 times [2022-09-20 20:41:29,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-09-20 20:41:29,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275228242] [2022-09-20 20:41:29,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-09-20 20:41:29,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-09-20 20:41:29,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-09-20 20:41:29,600 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 20:41:29,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-09-20 20:41:29,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275228242] [2022-09-20 20:41:29,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275228242] provided 1 perfect and 0 imperfect interpolant sequences [2022-09-20 20:41:29,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-09-20 20:41:29,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-09-20 20:41:29,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914867253] [2022-09-20 20:41:29,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-09-20 20:41:29,601 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-09-20 20:41:29,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-09-20 20:41:29,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-09-20 20:41:29,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-09-20 20:41:29,602 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 75 out of 92 [2022-09-20 20:41:29,603 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 109 transitions, 576 flow. Second operand has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 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 20:41:29,603 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-09-20 20:41:29,603 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 75 of 92 [2022-09-20 20:41:29,603 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-09-20 20:41:29,735 INFO L130 PetriNetUnfolder]: 135/701 cut-off events. [2022-09-20 20:41:29,735 INFO L131 PetriNetUnfolder]: For 2024/2075 co-relation queries the response was YES. [2022-09-20 20:41:29,739 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2279 conditions, 701 events. 135/701 cut-off events. For 2024/2075 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 5762 event pairs, 0 based on Foata normal form. 2/668 useless extension candidates. Maximal degree in co-relation 2222. Up to 103 conditions per place. [2022-09-20 20:41:29,740 INFO L137 encePairwiseOnDemand]: 86/92 looper letters, 0 selfloop transitions, 0 changer transitions 110/110 dead transitions. [2022-09-20 20:41:29,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 110 transitions, 616 flow [2022-09-20 20:41:29,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-09-20 20:41:29,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-09-20 20:41:29,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 541 transitions. [2022-09-20 20:41:29,742 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8400621118012422 [2022-09-20 20:41:29,742 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 541 transitions. [2022-09-20 20:41:29,742 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 541 transitions. [2022-09-20 20:41:29,742 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-09-20 20:41:29,743 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 541 transitions. [2022-09-20 20:41:29,744 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.28571428571429) internal successors, (541), 7 states have internal predecessors, (541), 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 20:41:29,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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 20:41:29,745 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 92.0) internal successors, (736), 8 states have internal predecessors, (736), 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 20:41:29,745 INFO L175 Difference]: Start difference. First operand has 136 places, 109 transitions, 576 flow. Second operand 7 states and 541 transitions. [2022-09-20 20:41:29,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 110 transitions, 616 flow [2022-09-20 20:41:29,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 110 transitions, 519 flow, removed 15 selfloop flow, removed 15 redundant places. [2022-09-20 20:41:29,760 INFO L231 Difference]: Finished difference. Result has 122 places, 0 transitions, 0 flow [2022-09-20 20:41:29,760 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=92, PETRI_DIFFERENCE_MINUEND_FLOW=475, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=0, PETRI_PLACES=122, PETRI_TRANSITIONS=0} [2022-09-20 20:41:29,761 INFO L287 CegarLoopForPetriNet]: 84 programPoint places, 38 predicate places. [2022-09-20 20:41:29,762 INFO L495 AbstractCegarLoop]: Abstraction has has 122 places, 0 transitions, 0 flow [2022-09-20 20:41:29,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 76.85714285714286) internal successors, (538), 7 states have internal predecessors, (538), 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 20:41:29,764 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-09-20 20:41:29,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-09-20 20:41:29,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-09-20 20:41:29,765 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-09-20 20:41:29,765 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-09-20 20:41:29,765 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2022-09-20 20:41:29,768 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-09-20 20:41:29,768 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-09-20 20:41:29,774 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 08:41:29 BasicIcfg [2022-09-20 20:41:29,774 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-09-20 20:41:29,777 INFO L158 Benchmark]: Toolchain (without parser) took 4668.15ms. Allocated memory is still 264.2MB. Free memory was 235.7MB in the beginning and 130.9MB in the end (delta: 104.9MB). Peak memory consumption was 104.3MB. Max. memory is 8.0GB. [2022-09-20 20:41:29,777 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 178.3MB. Free memory is still 132.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-09-20 20:41:29,777 INFO L158 Benchmark]: CACSL2BoogieTranslator took 417.11ms. Allocated memory is still 264.2MB. Free memory was 235.7MB in the beginning and 223.7MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-09-20 20:41:29,777 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.49ms. Allocated memory is still 264.2MB. Free memory was 223.7MB in the beginning and 221.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-09-20 20:41:29,778 INFO L158 Benchmark]: Boogie Preprocessor took 33.36ms. Allocated memory is still 264.2MB. Free memory was 221.6MB in the beginning and 220.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-09-20 20:41:29,778 INFO L158 Benchmark]: RCFGBuilder took 396.12ms. Allocated memory is still 264.2MB. Free memory was 220.6MB in the beginning and 207.5MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-09-20 20:41:29,778 INFO L158 Benchmark]: TraceAbstraction took 3775.89ms. Allocated memory is still 264.2MB. Free memory was 207.0MB in the beginning and 130.9MB in the end (delta: 76.1MB). Peak memory consumption was 77.1MB. Max. memory is 8.0GB. [2022-09-20 20:41:29,779 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 178.3MB. Free memory is still 132.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 417.11ms. Allocated memory is still 264.2MB. Free memory was 235.7MB in the beginning and 223.7MB in the end (delta: 12.0MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 40.49ms. Allocated memory is still 264.2MB. Free memory was 223.7MB in the beginning and 221.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 33.36ms. Allocated memory is still 264.2MB. Free memory was 221.6MB in the beginning and 220.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 396.12ms. Allocated memory is still 264.2MB. Free memory was 220.6MB in the beginning and 207.5MB in the end (delta: 13.1MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3775.89ms. Allocated memory is still 264.2MB. Free memory was 207.0MB in the beginning and 130.9MB in the end (delta: 76.1MB). Peak memory consumption was 77.1MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 18]: 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, 115 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: 3.7s, OverallIterations: 8, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 259 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 259 mSDsluCounter, 295 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 319 mSDsCounter, 74 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 436 IncrementalHoareTripleChecker+Invalid, 510 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 74 mSolverCounterUnsat, 75 mSDtfsCounter, 436 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=576occurred in iteration=7, InterpolantAutomatonStates: 83, 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, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 479 NumberOfCodeBlocks, 479 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 471 ConstructedInterpolants, 0 QuantifiedInterpolants, 1719 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-09-20 20:41:29,812 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...