/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-SemanticLbe.epf --traceabstraction.use.on-demand.petri.net.difference true --traceabstraction.size.reduction.to.apply.after.petri.net.difference REMOVE_DEAD -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/13-privatized_44-traces-mine2_true.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 22:03:29,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 22:03:29,707 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 22:03:29,725 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-12-12 22:03:29,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 22:03:29,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 22:03:29,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 22:03:29,732 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 22:03:29,733 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 22:03:29,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 22:03:29,734 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 22:03:29,735 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 22:03:29,736 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 22:03:29,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 22:03:29,751 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 22:03:29,752 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 22:03:29,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-12-12 22:03:29,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 22:03:29,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 22:03:29,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 22:03:29,768 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-SemanticLbe.epf [2022-12-12 22:03:29,796 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 22:03:29,797 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 22:03:29,797 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 22:03:29,797 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 22:03:29,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 22:03:29,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 22:03:29,798 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 22:03:29,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 22:03:29,798 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 22:03:29,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 22:03:29,798 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 22:03:29,798 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 22:03:29,798 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 22:03:29,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 22:03:29,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 22:03:29,799 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 22:03:29,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 22:03:29,799 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 22:03:29,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 22:03:29,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 22:03:29,799 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 22:03:29,799 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 22:03:29,799 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 22:03:29,799 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 22:03:29,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 22:03:29,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 22:03:29,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 22:03:29,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 22:03:29,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 22:03:29,800 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 22:03:29,800 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 22:03:30,037 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 22:03:30,062 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 22:03:30,064 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 22:03:30,065 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 22:03:30,065 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 22:03:30,067 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_44-traces-mine2_true.i [2022-12-12 22:03:31,055 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 22:03:31,237 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 22:03:31,238 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_44-traces-mine2_true.i [2022-12-12 22:03:31,252 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d711b9f70/e93cc3d535374e379c659bf63456837b/FLAG4edddadce [2022-12-12 22:03:31,265 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d711b9f70/e93cc3d535374e379c659bf63456837b [2022-12-12 22:03:31,266 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 22:03:31,267 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 22:03:31,268 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 22:03:31,268 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 22:03:31,270 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 22:03:31,270 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 10:03:31" (1/1) ... [2022-12-12 22:03:31,271 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@609f47ca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:31, skipping insertion in model container [2022-12-12 22:03:31,271 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 10:03:31" (1/1) ... [2022-12-12 22:03:31,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 22:03:31,301 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 22:03:31,390 WARN L237 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_44-traces-mine2_true.i[1089,1102] [2022-12-12 22:03:31,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 22:03:31,472 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 22:03:31,479 WARN L237 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_44-traces-mine2_true.i[1089,1102] [2022-12-12 22:03:31,496 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 22:03:31,521 INFO L208 MainTranslator]: Completed translation [2022-12-12 22:03:31,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:31 WrapperNode [2022-12-12 22:03:31,523 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 22:03:31,524 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 22:03:31,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 22:03:31,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 22:03:31,529 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:31" (1/1) ... [2022-12-12 22:03:31,542 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:31" (1/1) ... [2022-12-12 22:03:31,560 INFO L138 Inliner]: procedures = 162, calls = 29, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 53 [2022-12-12 22:03:31,561 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 22:03:31,562 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 22:03:31,562 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 22:03:31,562 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 22:03:31,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:31" (1/1) ... [2022-12-12 22:03:31,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:31" (1/1) ... [2022-12-12 22:03:31,570 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:31" (1/1) ... [2022-12-12 22:03:31,570 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:31" (1/1) ... [2022-12-12 22:03:31,573 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:31" (1/1) ... [2022-12-12 22:03:31,574 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:31" (1/1) ... [2022-12-12 22:03:31,574 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:31" (1/1) ... [2022-12-12 22:03:31,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:31" (1/1) ... [2022-12-12 22:03:31,577 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 22:03:31,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 22:03:31,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 22:03:31,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 22:03:31,578 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:31" (1/1) ... [2022-12-12 22:03:31,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 22:03:31,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:03:31,637 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) [2022-12-12 22:03:31,655 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 [2022-12-12 22:03:31,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 22:03:31,676 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-12 22:03:31,676 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 22:03:31,677 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 22:03:31,677 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-12 22:03:31,677 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-12 22:03:31,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 22:03:31,677 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 22:03:31,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 22:03:31,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 22:03:31,678 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2022-12-12 22:03:31,767 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 22:03:31,768 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 22:03:31,924 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 22:03:31,929 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 22:03:31,929 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 22:03:31,930 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 10:03:31 BoogieIcfgContainer [2022-12-12 22:03:31,930 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 22:03:31,932 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 22:03:31,932 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 22:03:31,934 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 22:03:31,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 10:03:31" (1/3) ... [2022-12-12 22:03:31,934 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60dda284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 10:03:31, skipping insertion in model container [2022-12-12 22:03:31,934 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:31" (2/3) ... [2022-12-12 22:03:31,935 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60dda284 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.12 10:03:31, skipping insertion in model container [2022-12-12 22:03:31,935 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 10:03:31" (3/3) ... [2022-12-12 22:03:31,935 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_44-traces-mine2_true.i [2022-12-12 22:03:31,947 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 22:03:31,947 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-12 22:03:31,947 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 22:03:31,975 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 22:03:31,995 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 72 places, 70 transitions, 145 flow [2022-12-12 22:03:32,027 INFO L130 PetriNetUnfolder]: 2/69 cut-off events. [2022-12-12 22:03:32,027 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 22:03:32,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 69 events. 2/69 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 43 event pairs, 0 based on Foata normal form. 0/65 useless extension candidates. Maximal degree in co-relation 40. Up to 2 conditions per place. [2022-12-12 22:03:32,030 INFO L82 GeneralOperation]: Start removeDead. Operand has 72 places, 70 transitions, 145 flow [2022-12-12 22:03:32,032 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 64 places, 61 transitions, 125 flow [2022-12-12 22:03:32,033 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 22:03:32,045 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 64 places, 61 transitions, 125 flow [2022-12-12 22:03:32,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 64 places, 61 transitions, 125 flow [2022-12-12 22:03:32,062 INFO L130 PetriNetUnfolder]: 1/61 cut-off events. [2022-12-12 22:03:32,062 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 22:03:32,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 61 events. 1/61 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 36 event pairs, 0 based on Foata normal form. 0/59 useless extension candidates. Maximal degree in co-relation 32. Up to 2 conditions per place. [2022-12-12 22:03:32,064 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 64 places, 61 transitions, 125 flow [2022-12-12 22:03:32,064 INFO L226 LiptonReduction]: Number of co-enabled transitions 480 [2022-12-12 22:03:34,294 INFO L241 LiptonReduction]: Total number of compositions: 51 [2022-12-12 22:03:34,310 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 22:03:34,318 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;@2bcd89e8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 22:03:34,318 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-12-12 22:03:34,322 INFO L130 PetriNetUnfolder]: 0/9 cut-off events. [2022-12-12 22:03:34,322 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 22:03:34,322 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:03:34,322 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2022-12-12 22:03:34,323 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 22:03:34,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:03:34,325 INFO L85 PathProgramCache]: Analyzing trace with hash 248410, now seen corresponding path program 1 times [2022-12-12 22:03:34,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:03:34,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433948359] [2022-12-12 22:03:34,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:03:34,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:03:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:03:34,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:03:34,475 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:03:34,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433948359] [2022-12-12 22:03:34,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433948359] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:03:34,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:03:34,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 22:03:34,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1628038757] [2022-12-12 22:03:34,478 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:03:34,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-12 22:03:34,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:03:34,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-12 22:03:34,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-12 22:03:34,508 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 20 [2022-12-12 22:03:34,509 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 20 transitions, 43 flow. Second operand has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2022-12-12 22:03:34,509 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:03:34,509 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 20 [2022-12-12 22:03:34,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:03:34,578 INFO L130 PetriNetUnfolder]: 35/93 cut-off events. [2022-12-12 22:03:34,578 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 22:03:34,579 INFO L83 FinitePrefix]: Finished finitePrefix Result has 182 conditions, 93 events. 35/93 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 348 event pairs, 35 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 173. Up to 85 conditions per place. [2022-12-12 22:03:34,580 INFO L137 encePairwiseOnDemand]: 19/20 looper letters, 14 selfloop transitions, 0 changer transitions 0/19 dead transitions. [2022-12-12 22:03:34,580 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 24 places, 19 transitions, 69 flow [2022-12-12 22:03:34,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-12 22:03:34,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-12-12 22:03:34,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 25 transitions. [2022-12-12 22:03:34,587 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.625 [2022-12-12 22:03:34,591 INFO L295 CegarLoopForPetriNet]: 23 programPoint places, 1 predicate places. [2022-12-12 22:03:34,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 24 places, 19 transitions, 69 flow [2022-12-12 22:03:34,593 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 24 places, 19 transitions, 69 flow [2022-12-12 22:03:34,594 INFO L495 AbstractCegarLoop]: Abstraction has has 24 places, 19 transitions, 69 flow [2022-12-12 22:03:34,594 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.5) internal successors, (13), 2 states have internal predecessors, (13), 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) [2022-12-12 22:03:34,594 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:03:34,594 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2022-12-12 22:03:34,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 22:03:34,594 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 22:03:34,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:03:34,595 INFO L85 PathProgramCache]: Analyzing trace with hash 7699525, now seen corresponding path program 1 times [2022-12-12 22:03:34,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:03:34,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418948909] [2022-12-12 22:03:34,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:03:34,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:03:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:03:34,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:03:34,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:03:34,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418948909] [2022-12-12 22:03:34,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418948909] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:03:34,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:03:34,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 22:03:34,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450644483] [2022-12-12 22:03:34,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:03:34,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 22:03:34,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:03:34,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 22:03:34,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 22:03:34,737 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2022-12-12 22:03:34,737 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 24 places, 19 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-12-12 22:03:34,737 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:03:34,737 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2022-12-12 22:03:34,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:03:34,784 INFO L130 PetriNetUnfolder]: 29/92 cut-off events. [2022-12-12 22:03:34,785 INFO L131 PetriNetUnfolder]: For 5/5 co-relation queries the response was YES. [2022-12-12 22:03:34,785 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254 conditions, 92 events. 29/92 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 368 event pairs, 17 based on Foata normal form. 6/71 useless extension candidates. Maximal degree in co-relation 242. Up to 73 conditions per place. [2022-12-12 22:03:34,785 INFO L137 encePairwiseOnDemand]: 13/20 looper letters, 12 selfloop transitions, 5 changer transitions 3/22 dead transitions. [2022-12-12 22:03:34,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 22 transitions, 119 flow [2022-12-12 22:03:34,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 22:03:34,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 22:03:34,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 30 transitions. [2022-12-12 22:03:34,789 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5 [2022-12-12 22:03:34,790 INFO L295 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2022-12-12 22:03:34,790 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 22 transitions, 119 flow [2022-12-12 22:03:34,790 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 19 transitions, 105 flow [2022-12-12 22:03:34,791 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 19 transitions, 105 flow [2022-12-12 22:03:34,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 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) [2022-12-12 22:03:34,791 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:03:34,791 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2022-12-12 22:03:34,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 22:03:34,791 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 22:03:34,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:03:34,791 INFO L85 PathProgramCache]: Analyzing trace with hash 238685268, now seen corresponding path program 1 times [2022-12-12 22:03:34,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:03:34,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512626517] [2022-12-12 22:03:34,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:03:34,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:03:34,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:03:34,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:03:34,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:03:34,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512626517] [2022-12-12 22:03:34,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512626517] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:03:34,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:03:34,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 22:03:34,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314564170] [2022-12-12 22:03:34,857 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:03:34,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 22:03:34,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:03:34,858 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 22:03:34,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 22:03:34,858 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2022-12-12 22:03:34,858 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 19 transitions, 105 flow. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-12-12 22:03:34,858 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:03:34,858 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2022-12-12 22:03:34,858 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:03:34,891 INFO L130 PetriNetUnfolder]: 9/57 cut-off events. [2022-12-12 22:03:34,891 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-12-12 22:03:34,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 57 events. 9/57 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 195 event pairs, 0 based on Foata normal form. 7/55 useless extension candidates. Maximal degree in co-relation 192. Up to 44 conditions per place. [2022-12-12 22:03:34,891 INFO L137 encePairwiseOnDemand]: 12/20 looper letters, 6 selfloop transitions, 6 changer transitions 10/24 dead transitions. [2022-12-12 22:03:34,892 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 24 transitions, 175 flow [2022-12-12 22:03:34,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 22:03:34,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 22:03:34,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2022-12-12 22:03:34,892 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2022-12-12 22:03:34,893 INFO L295 CegarLoopForPetriNet]: 23 programPoint places, 2 predicate places. [2022-12-12 22:03:34,893 INFO L82 GeneralOperation]: Start removeDead. Operand has 25 places, 24 transitions, 175 flow [2022-12-12 22:03:34,893 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 14 transitions, 99 flow [2022-12-12 22:03:34,894 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 14 transitions, 99 flow [2022-12-12 22:03:34,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 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) [2022-12-12 22:03:34,894 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:03:34,894 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:03:34,894 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 22:03:34,894 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 22:03:34,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:03:34,894 INFO L85 PathProgramCache]: Analyzing trace with hash 1765842055, now seen corresponding path program 1 times [2022-12-12 22:03:34,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:03:34,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382291172] [2022-12-12 22:03:34,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:03:34,895 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:03:34,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:03:35,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-12 22:03:35,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:03:35,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382291172] [2022-12-12 22:03:35,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382291172] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:03:35,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:03:35,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 22:03:35,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916358565] [2022-12-12 22:03:35,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:03:35,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 22:03:35,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:03:35,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 22:03:35,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 22:03:35,036 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 20 [2022-12-12 22:03:35,036 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 14 transitions, 99 flow. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2022-12-12 22:03:35,037 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:03:35,037 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 20 [2022-12-12 22:03:35,037 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:03:35,052 INFO L130 PetriNetUnfolder]: 0/6 cut-off events. [2022-12-12 22:03:35,052 INFO L131 PetriNetUnfolder]: For 4/4 co-relation queries the response was YES. [2022-12-12 22:03:35,052 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30 conditions, 6 events. 0/6 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 1. Compared 0 event pairs, 0 based on Foata normal form. 1/7 useless extension candidates. Maximal degree in co-relation 0. Up to 4 conditions per place. [2022-12-12 22:03:35,052 INFO L137 encePairwiseOnDemand]: 17/20 looper letters, 0 selfloop transitions, 0 changer transitions 6/6 dead transitions. [2022-12-12 22:03:35,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 6 transitions, 47 flow [2022-12-12 22:03:35,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 22:03:35,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 22:03:35,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2022-12-12 22:03:35,054 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.2125 [2022-12-12 22:03:35,054 INFO L295 CegarLoopForPetriNet]: 23 programPoint places, -5 predicate places. [2022-12-12 22:03:35,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 18 places, 6 transitions, 47 flow [2022-12-12 22:03:35,055 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 0 places, 0 transitions, 0 flow [2022-12-12 22:03:35,055 INFO L495 AbstractCegarLoop]: Abstraction has has 0 places, 0 transitions, 0 flow [2022-12-12 22:03:35,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 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) [2022-12-12 22:03:35,057 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-12-12 22:03:35,057 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2022-12-12 22:03:35,057 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-12-12 22:03:35,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 22:03:35,058 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2022-12-12 22:03:35,061 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 22:03:35,061 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 22:03:35,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 10:03:35 BasicIcfg [2022-12-12 22:03:35,067 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 22:03:35,068 INFO L158 Benchmark]: Toolchain (without parser) took 3800.50ms. Allocated memory was 172.0MB in the beginning and 206.6MB in the end (delta: 34.6MB). Free memory was 147.1MB in the beginning and 123.1MB in the end (delta: 24.0MB). Peak memory consumption was 58.5MB. Max. memory is 8.0GB. [2022-12-12 22:03:35,068 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 172.0MB. Free memory was 149.9MB in the beginning and 149.8MB in the end (delta: 70.5kB). There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 22:03:35,068 INFO L158 Benchmark]: CACSL2BoogieTranslator took 254.96ms. Allocated memory is still 172.0MB. Free memory was 147.1MB in the beginning and 128.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-12 22:03:35,070 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.90ms. Allocated memory is still 172.0MB. Free memory was 128.2MB in the beginning and 126.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-12-12 22:03:35,074 INFO L158 Benchmark]: Boogie Preprocessor took 15.07ms. Allocated memory is still 172.0MB. Free memory was 126.5MB in the beginning and 125.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 22:03:35,076 INFO L158 Benchmark]: RCFGBuilder took 353.22ms. Allocated memory is still 172.0MB. Free memory was 125.1MB in the beginning and 112.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 22:03:35,077 INFO L158 Benchmark]: TraceAbstraction took 3135.53ms. Allocated memory was 172.0MB in the beginning and 206.6MB in the end (delta: 34.6MB). Free memory was 111.5MB in the beginning and 123.1MB in the end (delta: -11.7MB). Peak memory consumption was 22.8MB. Max. memory is 8.0GB. [2022-12-12 22:03:35,078 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 172.0MB. Free memory was 149.9MB in the beginning and 149.8MB in the end (delta: 70.5kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 254.96ms. Allocated memory is still 172.0MB. Free memory was 147.1MB in the beginning and 128.2MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 36.90ms. Allocated memory is still 172.0MB. Free memory was 128.2MB in the beginning and 126.5MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * Boogie Preprocessor took 15.07ms. Allocated memory is still 172.0MB. Free memory was 126.5MB in the beginning and 125.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 353.22ms. Allocated memory is still 172.0MB. Free memory was 125.1MB in the beginning and 112.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3135.53ms. Allocated memory was 172.0MB in the beginning and 206.6MB in the end (delta: 34.6MB). Free memory was 111.5MB in the beginning and 123.1MB in the end (delta: -11.7MB). Peak memory consumption was 22.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.2s, 64 PlacesBefore, 23 PlacesAfterwards, 61 TransitionsBefore, 20 TransitionsAfterwards, 480 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 3 ConcurrentSequentialCompositions, 27 TrivialYvCompositions, 21 ConcurrentYvCompositions, 0 ChoiceCompositions, 51 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 614, independent: 544, independent conditional: 544, independent unconditional: 0, dependent: 70, dependent conditional: 70, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 614, independent: 544, independent conditional: 0, independent unconditional: 544, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 614, independent: 544, independent conditional: 0, independent unconditional: 544, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 614, independent: 544, independent conditional: 0, independent unconditional: 544, dependent: 70, dependent conditional: 0, dependent unconditional: 70, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 417, independent: 392, independent conditional: 0, independent unconditional: 392, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 417, independent: 328, independent conditional: 0, independent unconditional: 328, dependent: 89, dependent conditional: 0, dependent unconditional: 89, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 89, independent: 64, independent conditional: 0, independent unconditional: 64, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 144, independent: 95, independent conditional: 0, independent unconditional: 95, dependent: 49, dependent conditional: 0, dependent unconditional: 49, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 614, independent: 152, independent conditional: 0, independent unconditional: 152, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 417, unknown conditional: 0, unknown unconditional: 417] , Statistics on independence cache: Total cache size (in pairs): 690, Positive cache size: 665, Positive conditional cache size: 0, Positive unconditional cache size: 665, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - 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, 83 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.1s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 72 IncrementalHoareTripleChecker+Invalid, 83 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 3 mSDtfsCounter, 72 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=105occurred in iteration=2, InterpolantAutomatonStates: 12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 137 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 61 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-12-12 22:03:35,092 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...