/usr/bin/java -Xmx16000000000 -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-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_31-traces-mine-vs-mutex_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 19:02:52,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 19:02:52,945 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 19:02:52,989 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 19:02:52,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 19:02:52,992 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 19:02:52,994 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 19:02:52,996 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 19:02:52,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 19:02:53,000 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 19:02:53,002 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 19:02:53,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 19:02:53,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 19:02:53,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 19:02:53,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 19:02:53,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 19:02:53,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 19:02:53,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 19:02:53,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 19:02:53,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 19:02:53,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 19:02:53,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 19:02:53,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 19:02:53,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 19:02:53,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 19:02:53,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 19:02:53,041 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 19:02:53,042 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 19:02:53,044 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-VariableLbe.epf [2023-01-27 19:02:53,079 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 19:02:53,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 19:02:53,080 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 19:02:53,080 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 19:02:53,081 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 19:02:53,081 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 19:02:53,081 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 19:02:53,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 19:02:53,081 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 19:02:53,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 19:02:53,082 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 19:02:53,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 19:02:53,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 19:02:53,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 19:02:53,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 19:02:53,082 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 19:02:53,082 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 19:02:53,082 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 19:02:53,082 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 19:02:53,082 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 19:02:53,082 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 19:02:53,082 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 19:02:53,083 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 19:02:53,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:02:53,083 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 19:02:53,083 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 19:02:53,083 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 19:02:53,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 19:02:53,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 19:02:53,093 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 19:02:53,093 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 19:02:53,093 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 19:02:53,410 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 19:02:53,431 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 19:02:53,433 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 19:02:53,434 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 19:02:53,434 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 19:02:53,435 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_31-traces-mine-vs-mutex_true.i [2023-01-27 19:02:55,160 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 19:02:55,526 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 19:02:55,527 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_31-traces-mine-vs-mutex_true.i [2023-01-27 19:02:55,550 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bd7d3fe8/4dafeba6e9ac43949f99415ea8c7d9fd/FLAG1a80e652f [2023-01-27 19:02:55,577 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2bd7d3fe8/4dafeba6e9ac43949f99415ea8c7d9fd [2023-01-27 19:02:55,579 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 19:02:55,580 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 19:02:55,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 19:02:55,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 19:02:55,584 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 19:02:55,584 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:02:55" (1/1) ... [2023-01-27 19:02:55,585 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10fafe13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:55, skipping insertion in model container [2023-01-27 19:02:55,585 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:02:55" (1/1) ... [2023-01-27 19:02:55,590 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 19:02:55,641 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 19:02:55,866 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_31-traces-mine-vs-mutex_true.i[1097,1110] [2023-01-27 19:02:56,019 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:02:56,029 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 19:02:56,038 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_31-traces-mine-vs-mutex_true.i[1097,1110] [2023-01-27 19:02:56,062 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:02:56,082 INFO L208 MainTranslator]: Completed translation [2023-01-27 19:02:56,082 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:56 WrapperNode [2023-01-27 19:02:56,083 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 19:02:56,083 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 19:02:56,083 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 19:02:56,084 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 19:02:56,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:56" (1/1) ... [2023-01-27 19:02:56,109 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:56" (1/1) ... [2023-01-27 19:02:56,137 INFO L138 Inliner]: procedures = 162, calls = 31, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 55 [2023-01-27 19:02:56,137 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 19:02:56,138 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 19:02:56,138 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 19:02:56,138 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 19:02:56,143 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:56" (1/1) ... [2023-01-27 19:02:56,143 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:56" (1/1) ... [2023-01-27 19:02:56,145 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:56" (1/1) ... [2023-01-27 19:02:56,145 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:56" (1/1) ... [2023-01-27 19:02:56,148 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:56" (1/1) ... [2023-01-27 19:02:56,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:56" (1/1) ... [2023-01-27 19:02:56,150 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:56" (1/1) ... [2023-01-27 19:02:56,151 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:56" (1/1) ... [2023-01-27 19:02:56,169 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 19:02:56,170 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 19:02:56,170 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 19:02:56,170 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 19:02:56,171 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:56" (1/1) ... [2023-01-27 19:02:56,174 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:02:56,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:02:56,214 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) [2023-01-27 19:02:56,265 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 [2023-01-27 19:02:56,279 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 19:02:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 19:02:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 19:02:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 19:02:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 19:02:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-27 19:02:56,280 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-27 19:02:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 19:02:56,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 19:02:56,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 19:02:56,281 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 19:02:56,282 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 19:02:56,403 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 19:02:56,404 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 19:02:56,646 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 19:02:56,650 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 19:02:56,650 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-01-27 19:02:56,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:02:56 BoogieIcfgContainer [2023-01-27 19:02:56,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 19:02:56,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 19:02:56,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 19:02:56,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 19:02:56,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 07:02:55" (1/3) ... [2023-01-27 19:02:56,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50048a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:02:56, skipping insertion in model container [2023-01-27 19:02:56,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:02:56" (2/3) ... [2023-01-27 19:02:56,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50048a1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:02:56, skipping insertion in model container [2023-01-27 19:02:56,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:02:56" (3/3) ... [2023-01-27 19:02:56,657 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_31-traces-mine-vs-mutex_true.i [2023-01-27 19:02:56,669 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 19:02:56,670 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 19:02:56,670 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 19:02:56,746 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-27 19:02:56,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 78 places, 75 transitions, 158 flow [2023-01-27 19:02:56,850 INFO L130 PetriNetUnfolder]: 1/74 cut-off events. [2023-01-27 19:02:56,850 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 19:02:56,853 INFO L83 FinitePrefix]: Finished finitePrefix Result has 79 conditions, 74 events. 1/74 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 44 event pairs, 0 based on Foata normal form. 0/72 useless extension candidates. Maximal degree in co-relation 38. Up to 2 conditions per place. [2023-01-27 19:02:56,853 INFO L82 GeneralOperation]: Start removeDead. Operand has 78 places, 75 transitions, 158 flow [2023-01-27 19:02:56,855 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 65 places, 61 transitions, 125 flow [2023-01-27 19:02:56,857 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 19:02:56,877 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 65 places, 61 transitions, 125 flow [2023-01-27 19:02:56,879 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 65 places, 61 transitions, 125 flow [2023-01-27 19:02:56,880 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 65 places, 61 transitions, 125 flow [2023-01-27 19:02:56,925 INFO L130 PetriNetUnfolder]: 0/61 cut-off events. [2023-01-27 19:02:56,937 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:02:56,937 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 61 events. 0/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 27 event pairs, 0 based on Foata normal form. 0/61 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2023-01-27 19:02:56,937 INFO L119 LiptonReduction]: Number of co-enabled transitions 504 [2023-01-27 19:02:59,229 INFO L134 LiptonReduction]: Checked pairs total: 1237 [2023-01-27 19:02:59,229 INFO L136 LiptonReduction]: Total number of compositions: 46 [2023-01-27 19:02:59,244 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 19:02:59,249 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;@75663958, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 19:02:59,249 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-01-27 19:02:59,255 INFO L130 PetriNetUnfolder]: 0/11 cut-off events. [2023-01-27 19:02:59,255 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:02:59,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:02:59,256 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:02:59,257 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 19:02:59,261 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:02:59,262 INFO L85 PathProgramCache]: Analyzing trace with hash 1199823166, now seen corresponding path program 1 times [2023-01-27 19:02:59,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:02:59,267 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118698595] [2023-01-27 19:02:59,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:02:59,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:02:59,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:02:59,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:02:59,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:02:59,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118698595] [2023-01-27 19:02:59,549 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118698595] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:02:59,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:02:59,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-01-27 19:02:59,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715088042] [2023-01-27 19:02:59,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:02:59,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:02:59,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:02:59,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:02:59,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 19:02:59,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 121 [2023-01-27 19:02:59,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 15 transitions, 33 flow. Second operand has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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) [2023-01-27 19:02:59,580 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:02:59,580 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 121 [2023-01-27 19:02:59,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:02:59,651 INFO L130 PetriNetUnfolder]: 25/70 cut-off events. [2023-01-27 19:02:59,652 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:02:59,653 INFO L83 FinitePrefix]: Finished finitePrefix Result has 138 conditions, 70 events. 25/70 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 166 event pairs, 10 based on Foata normal form. 3/73 useless extension candidates. Maximal degree in co-relation 129. Up to 45 conditions per place. [2023-01-27 19:02:59,654 INFO L137 encePairwiseOnDemand]: 118/121 looper letters, 14 selfloop transitions, 2 changer transitions 0/18 dead transitions. [2023-01-27 19:02:59,654 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 18 transitions, 71 flow [2023-01-27 19:02:59,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:02:59,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:02:59,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 212 transitions. [2023-01-27 19:02:59,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5840220385674931 [2023-01-27 19:02:59,681 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 212 transitions. [2023-01-27 19:02:59,682 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 212 transitions. [2023-01-27 19:02:59,683 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:02:59,684 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 212 transitions. [2023-01-27 19:02:59,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 70.66666666666667) internal successors, (212), 3 states have internal predecessors, (212), 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) [2023-01-27 19:02:59,693 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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) [2023-01-27 19:02:59,693 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 121.0) internal successors, (484), 4 states have internal predecessors, (484), 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) [2023-01-27 19:02:59,694 INFO L175 Difference]: Start difference. First operand has 19 places, 15 transitions, 33 flow. Second operand 3 states and 212 transitions. [2023-01-27 19:02:59,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 18 transitions, 71 flow [2023-01-27 19:02:59,696 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 18 transitions, 70 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 19:02:59,697 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 40 flow [2023-01-27 19:02:59,700 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=32, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=40, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-01-27 19:02:59,719 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2023-01-27 19:02:59,720 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 40 flow [2023-01-27 19:02:59,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.0) internal successors, (201), 3 states have internal predecessors, (201), 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) [2023-01-27 19:02:59,720 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:02:59,720 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:02:59,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 19:02:59,720 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 19:02:59,726 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:02:59,726 INFO L85 PathProgramCache]: Analyzing trace with hash -811427042, now seen corresponding path program 1 times [2023-01-27 19:02:59,726 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:02:59,727 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371054306] [2023-01-27 19:02:59,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:02:59,727 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:02:59,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:02:59,973 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:02:59,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:02:59,974 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371054306] [2023-01-27 19:02:59,974 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371054306] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:02:59,974 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:02:59,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:02:59,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1057536654] [2023-01-27 19:02:59,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:02:59,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 19:02:59,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:02:59,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 19:02:59,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-01-27 19:02:59,983 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 121 [2023-01-27 19:02:59,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 40 flow. Second operand has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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) [2023-01-27 19:02:59,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:02:59,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 121 [2023-01-27 19:02:59,984 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:03:00,040 INFO L130 PetriNetUnfolder]: 16/49 cut-off events. [2023-01-27 19:03:00,041 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:03:00,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 112 conditions, 49 events. 16/49 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 77 event pairs, 2 based on Foata normal form. 9/58 useless extension candidates. Maximal degree in co-relation 101. Up to 40 conditions per place. [2023-01-27 19:03:00,041 INFO L137 encePairwiseOnDemand]: 117/121 looper letters, 13 selfloop transitions, 4 changer transitions 0/17 dead transitions. [2023-01-27 19:03:00,050 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 17 transitions, 78 flow [2023-01-27 19:03:00,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 19:03:00,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 19:03:00,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 207 transitions. [2023-01-27 19:03:00,055 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42768595041322316 [2023-01-27 19:03:00,055 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 207 transitions. [2023-01-27 19:03:00,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 207 transitions. [2023-01-27 19:03:00,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:03:00,055 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 207 transitions. [2023-01-27 19:03:00,056 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 51.75) internal successors, (207), 4 states have internal predecessors, (207), 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) [2023-01-27 19:03:00,058 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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) [2023-01-27 19:03:00,058 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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) [2023-01-27 19:03:00,058 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 40 flow. Second operand 4 states and 207 transitions. [2023-01-27 19:03:00,059 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 17 transitions, 78 flow [2023-01-27 19:03:00,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 22 places, 17 transitions, 74 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-27 19:03:00,059 INFO L231 Difference]: Finished difference. Result has 22 places, 15 transitions, 44 flow [2023-01-27 19:03:00,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=36, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=44, PETRI_PLACES=22, PETRI_TRANSITIONS=15} [2023-01-27 19:03:00,060 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-01-27 19:03:00,060 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 15 transitions, 44 flow [2023-01-27 19:03:00,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 49.5) internal successors, (198), 4 states have internal predecessors, (198), 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) [2023-01-27 19:03:00,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:03:00,061 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:03:00,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 19:03:00,061 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-27 19:03:00,061 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:03:00,062 INFO L85 PathProgramCache]: Analyzing trace with hash 911268350, now seen corresponding path program 1 times [2023-01-27 19:03:00,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:03:00,062 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804853368] [2023-01-27 19:03:00,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:03:00,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:03:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:03:00,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 19:03:00,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:03:00,225 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804853368] [2023-01-27 19:03:00,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804853368] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:03:00,226 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:03:00,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 19:03:00,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1969715325] [2023-01-27 19:03:00,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:03:00,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-27 19:03:00,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:03:00,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-27 19:03:00,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-27 19:03:00,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 121 [2023-01-27 19:03:00,231 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 22 places, 15 transitions, 44 flow. Second operand has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 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) [2023-01-27 19:03:00,231 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:03:00,231 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 121 [2023-01-27 19:03:00,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:03:00,277 INFO L130 PetriNetUnfolder]: 14/46 cut-off events. [2023-01-27 19:03:00,277 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2023-01-27 19:03:00,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 105 conditions, 46 events. 14/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 74 event pairs, 10 based on Foata normal form. 1/47 useless extension candidates. Maximal degree in co-relation 94. Up to 31 conditions per place. [2023-01-27 19:03:00,278 INFO L137 encePairwiseOnDemand]: 117/121 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2023-01-27 19:03:00,278 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 16 transitions, 72 flow [2023-01-27 19:03:00,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-27 19:03:00,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-27 19:03:00,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 275 transitions. [2023-01-27 19:03:00,280 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5681818181818182 [2023-01-27 19:03:00,280 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 275 transitions. [2023-01-27 19:03:00,280 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 275 transitions. [2023-01-27 19:03:00,281 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:03:00,281 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 275 transitions. [2023-01-27 19:03:00,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 68.75) internal successors, (275), 4 states have internal predecessors, (275), 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) [2023-01-27 19:03:00,283 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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) [2023-01-27 19:03:00,283 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 121.0) internal successors, (605), 5 states have internal predecessors, (605), 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) [2023-01-27 19:03:00,283 INFO L175 Difference]: Start difference. First operand has 22 places, 15 transitions, 44 flow. Second operand 4 states and 275 transitions. [2023-01-27 19:03:00,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 24 places, 16 transitions, 72 flow [2023-01-27 19:03:00,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 16 transitions, 66 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 19:03:00,284 INFO L231 Difference]: Finished difference. Result has 21 places, 0 transitions, 0 flow [2023-01-27 19:03:00,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=121, PETRI_DIFFERENCE_MINUEND_FLOW=34, PETRI_DIFFERENCE_MINUEND_PLACES=18, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=21, PETRI_TRANSITIONS=0} [2023-01-27 19:03:00,285 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 2 predicate places. [2023-01-27 19:03:00,285 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 0 transitions, 0 flow [2023-01-27 19:03:00,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 68.25) internal successors, (273), 4 states have internal predecessors, (273), 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) [2023-01-27 19:03:00,287 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-01-27 19:03:00,288 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-01-27 19:03:00,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-27 19:03:00,288 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-01-27 19:03:00,292 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 19:03:00,292 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 19:03:00,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 07:03:00 BasicIcfg [2023-01-27 19:03:00,295 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 19:03:00,296 INFO L158 Benchmark]: Toolchain (without parser) took 4716.09ms. Allocated memory is still 461.4MB. Free memory was 410.9MB in the beginning and 278.3MB in the end (delta: 132.6MB). Peak memory consumption was 134.7MB. Max. memory is 16.0GB. [2023-01-27 19:03:00,297 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 316.7MB. Free memory is still 266.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 19:03:00,297 INFO L158 Benchmark]: CACSL2BoogieTranslator took 501.04ms. Allocated memory is still 461.4MB. Free memory was 410.6MB in the beginning and 391.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-27 19:03:00,299 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.89ms. Allocated memory is still 461.4MB. Free memory was 391.8MB in the beginning and 389.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 19:03:00,299 INFO L158 Benchmark]: Boogie Preprocessor took 31.85ms. Allocated memory is still 461.4MB. Free memory was 389.7MB in the beginning and 388.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 19:03:00,299 INFO L158 Benchmark]: RCFGBuilder took 481.83ms. Allocated memory is still 461.4MB. Free memory was 388.2MB in the beginning and 375.0MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-01-27 19:03:00,300 INFO L158 Benchmark]: TraceAbstraction took 3641.97ms. Allocated memory is still 461.4MB. Free memory was 374.1MB in the beginning and 278.3MB in the end (delta: 95.8MB). Peak memory consumption was 97.0MB. Max. memory is 16.0GB. [2023-01-27 19:03:00,304 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 316.7MB. Free memory is still 266.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 501.04ms. Allocated memory is still 461.4MB. Free memory was 410.6MB in the beginning and 391.8MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 53.89ms. Allocated memory is still 461.4MB. Free memory was 391.8MB in the beginning and 389.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 31.85ms. Allocated memory is still 461.4MB. Free memory was 389.7MB in the beginning and 388.5MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 481.83ms. Allocated memory is still 461.4MB. Free memory was 388.2MB in the beginning and 375.0MB in the end (delta: 13.2MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 3641.97ms. Allocated memory is still 461.4MB. Free memory was 374.1MB in the beginning and 278.3MB in the end (delta: 95.8MB). Peak memory consumption was 97.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 65 PlacesBefore, 19 PlacesAfterwards, 61 TransitionsBefore, 15 TransitionsAfterwards, 504 CoEnabledTransitionPairs, 6 FixpointIterations, 27 TrivialSequentialCompositions, 19 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 0 ConcurrentYvCompositions, 0 ChoiceCompositions, 46 TotalNumberOfCompositions, 1237 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 501, independent: 365, independent conditional: 0, independent unconditional: 365, dependent: 136, dependent conditional: 0, dependent unconditional: 136, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 251, independent: 229, independent conditional: 0, independent unconditional: 229, dependent: 22, dependent conditional: 0, dependent unconditional: 22, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 501, independent: 136, independent conditional: 0, independent unconditional: 136, dependent: 114, dependent conditional: 0, dependent unconditional: 114, unknown: 251, unknown conditional: 0, unknown unconditional: 251] , Statistics on independence cache: Total cache size (in pairs): 20, Positive cache size: 9, Positive conditional cache size: 0, Positive unconditional cache size: 9, Negative cache size: 11, Negative conditional cache size: 0, Negative unconditional cache size: 11, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 19]: 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 3 procedures, 95 locations, 2 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: 3.5s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 0 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=44occurred in iteration=2, InterpolantAutomatonStates: 11, 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, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 32 NumberOfCodeBlocks, 32 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 123 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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! [2023-01-27 19:03:00,341 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...