/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_41-traces-ex-7_unknown_1_pos.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-wip.dk.repeated-lipton-a802222-m [2022-12-12 22:03:28,499 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-12 22:03:28,501 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-12 22:03:28,542 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-12 22:03:28,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-12 22:03:28,546 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-12 22:03:28,549 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-12 22:03:28,553 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-12 22:03:28,556 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-12 22:03:28,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-12 22:03:28,562 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-12 22:03:28,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-12 22:03:28,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-12 22:03:28,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-12 22:03:28,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-12 22:03:28,570 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-12 22:03:28,570 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-12 22:03:28,571 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-12 22:03:28,574 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-12 22:03:28,580 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-12 22:03:28,581 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-12 22:03:28,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-12 22:03:28,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-12 22:03:28,584 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-12 22:03:28,594 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-12 22:03:28,595 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-12 22:03:28,595 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-12 22:03:28,597 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-12 22:03:28,597 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-12 22:03:28,598 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2022-12-12 22:03:28,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-12 22:03:28,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-12 22:03:28,609 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-12 22:03:28,610 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 22:03:28,643 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-12 22:03:28,644 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-12 22:03:28,645 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-12 22:03:28,645 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-12 22:03:28,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-12 22:03:28,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-12 22:03:28,647 INFO L138 SettingsManager]: * Use SBE=true [2022-12-12 22:03:28,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-12 22:03:28,647 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-12 22:03:28,647 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-12 22:03:28,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-12 22:03:28,648 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-12 22:03:28,648 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-12 22:03:28,648 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-12 22:03:28,648 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-12 22:03:28,649 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-12 22:03:28,649 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-12 22:03:28,649 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-12 22:03:28,649 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-12 22:03:28,649 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-12 22:03:28,649 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-12 22:03:28,649 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-12-12 22:03:28,650 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-12 22:03:28,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 22:03:28,650 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-12 22:03:28,650 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-12 22:03:28,650 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-12 22:03:28,650 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-12 22:03:28,650 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-12 22:03:28,651 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-12 22:03:28,651 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use on-demand Petri net difference -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Size reduction to apply after Petri net difference -> REMOVE_DEAD [2022-12-12 22:03:28,969 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-12 22:03:28,995 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-12 22:03:28,997 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-12 22:03:28,998 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-12 22:03:28,998 INFO L275 PluginConnector]: CDTParser initialized [2022-12-12 22:03:29,000 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i [2022-12-12 22:03:30,036 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-12 22:03:30,318 INFO L351 CDTParser]: Found 1 translation units. [2022-12-12 22:03:30,318 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/13-privatized_41-traces-ex-7_unknown_1_pos.i [2022-12-12 22:03:30,334 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/323c6178e/6287cbdff7564e95882b09c9ed5856fc/FLAG6c94135d5 [2022-12-12 22:03:30,353 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/323c6178e/6287cbdff7564e95882b09c9ed5856fc [2022-12-12 22:03:30,355 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-12 22:03:30,356 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-12-12 22:03:30,357 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-12 22:03:30,357 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-12 22:03:30,359 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-12 22:03:30,360 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 10:03:30" (1/1) ... [2022-12-12 22:03:30,361 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51cd224a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:30, skipping insertion in model container [2022-12-12 22:03:30,361 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.12 10:03:30" (1/1) ... [2022-12-12 22:03:30,366 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-12 22:03:30,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-12 22:03:30,509 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_41-traces-ex-7_unknown_1_pos.i[1097,1110] [2022-12-12 22:03:30,628 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 22:03:30,642 INFO L203 MainTranslator]: Completed pre-run [2022-12-12 22:03:30,658 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_41-traces-ex-7_unknown_1_pos.i[1097,1110] [2022-12-12 22:03:30,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-12 22:03:30,739 INFO L208 MainTranslator]: Completed translation [2022-12-12 22:03:30,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:30 WrapperNode [2022-12-12 22:03:30,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-12 22:03:30,740 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-12 22:03:30,741 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-12 22:03:30,741 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-12 22:03:30,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:30" (1/1) ... [2022-12-12 22:03:30,760 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:30" (1/1) ... [2022-12-12 22:03:30,775 INFO L138 Inliner]: procedures = 162, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 48 [2022-12-12 22:03:30,776 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-12 22:03:30,777 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-12 22:03:30,777 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-12 22:03:30,777 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-12 22:03:30,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:30" (1/1) ... [2022-12-12 22:03:30,783 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:30" (1/1) ... [2022-12-12 22:03:30,785 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:30" (1/1) ... [2022-12-12 22:03:30,786 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:30" (1/1) ... [2022-12-12 22:03:30,789 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:30" (1/1) ... [2022-12-12 22:03:30,790 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:30" (1/1) ... [2022-12-12 22:03:30,791 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:30" (1/1) ... [2022-12-12 22:03:30,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:30" (1/1) ... [2022-12-12 22:03:30,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-12 22:03:30,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-12 22:03:30,795 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-12 22:03:30,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-12 22:03:30,796 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:30" (1/1) ... [2022-12-12 22:03:30,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-12 22:03:30,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-12-12 22:03:30,824 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 22:03:30,849 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 22:03:30,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-12-12 22:03:30,865 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-12-12 22:03:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-12 22:03:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-12-12 22:03:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2022-12-12 22:03:30,866 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2022-12-12 22:03:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-12 22:03:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-12 22:03:30,866 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-12 22:03:30,866 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-12 22:03:30,867 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 22:03:30,962 INFO L236 CfgBuilder]: Building ICFG [2022-12-12 22:03:30,964 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-12 22:03:31,135 INFO L277 CfgBuilder]: Performing block encoding [2022-12-12 22:03:31,141 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-12 22:03:31,141 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2022-12-12 22:03:31,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.12 10:03:31 BoogieIcfgContainer [2022-12-12 22:03:31,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-12 22:03:31,145 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-12 22:03:31,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-12 22:03:31,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-12 22:03:31,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.12 10:03:30" (1/3) ... [2022-12-12 22:03:31,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b41c4e4 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 22:03:31,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.12 10:03:30" (2/3) ... [2022-12-12 22:03:31,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b41c4e4 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 22:03:31,149 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 22:03:31,150 INFO L112 eAbstractionObserver]: Analyzing ICFG 13-privatized_41-traces-ex-7_unknown_1_pos.i [2022-12-12 22:03:31,167 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-12 22:03:31,167 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-12 22:03:31,167 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-12-12 22:03:31,214 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2022-12-12 22:03:31,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 63 places, 60 transitions, 125 flow [2022-12-12 22:03:31,310 INFO L130 PetriNetUnfolder]: 1/59 cut-off events. [2022-12-12 22:03:31,310 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 22:03:31,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 26 event pairs, 0 based on Foata normal form. 0/57 useless extension candidates. Maximal degree in co-relation 30. Up to 2 conditions per place. [2022-12-12 22:03:31,314 INFO L82 GeneralOperation]: Start removeDead. Operand has 63 places, 60 transitions, 125 flow [2022-12-12 22:03:31,323 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 55 places, 51 transitions, 105 flow [2022-12-12 22:03:31,325 INFO L203 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-12-12 22:03:31,360 INFO L174 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 55 places, 51 transitions, 105 flow [2022-12-12 22:03:31,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 55 places, 51 transitions, 105 flow [2022-12-12 22:03:31,391 INFO L130 PetriNetUnfolder]: 0/51 cut-off events. [2022-12-12 22:03:31,392 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 22:03:31,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55 conditions, 51 events. 0/51 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 19 event pairs, 0 based on Foata normal form. 0/51 useless extension candidates. Maximal degree in co-relation 0. Up to 1 conditions per place. [2022-12-12 22:03:31,393 INFO L222 LiptonReduction]: Starting Lipton reduction on Petri net that has 55 places, 51 transitions, 105 flow [2022-12-12 22:03:31,394 INFO L226 LiptonReduction]: Number of co-enabled transitions 240 [2022-12-12 22:03:33,991 INFO L241 LiptonReduction]: Total number of compositions: 43 [2022-12-12 22:03:34,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-12 22:03:34,018 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;@5c80a95e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, Conditionality=CONDITIONAL_DISJUNCTIVE, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-12 22:03:34,019 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-12 22:03:34,022 INFO L130 PetriNetUnfolder]: 0/15 cut-off events. [2022-12-12 22:03:34,022 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 22:03:34,022 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:03:34,023 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2022-12-12 22:03:34,023 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 22:03:34,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:03:34,029 INFO L85 PathProgramCache]: Analyzing trace with hash 1847464291, now seen corresponding path program 1 times [2022-12-12 22:03:34,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:03:34,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336931841] [2022-12-12 22:03:34,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:03:34,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:03:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:03:34,359 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 22:03:34,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:03:34,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336931841] [2022-12-12 22:03:34,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336931841] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:03:34,361 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:03:34,361 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2022-12-12 22:03:34,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12153012] [2022-12-12 22:03:34,363 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:03:34,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 22:03:34,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:03:34,384 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 22:03:34,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 22:03:34,386 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 16 [2022-12-12 22:03:34,387 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 35 flow. Second operand has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 22:03:34,387 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:03:34,388 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 16 [2022-12-12 22:03:34,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:03:34,449 INFO L130 PetriNetUnfolder]: 23/68 cut-off events. [2022-12-12 22:03:34,449 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2022-12-12 22:03:34,450 INFO L83 FinitePrefix]: Finished finitePrefix Result has 132 conditions, 68 events. 23/68 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 222 event pairs, 14 based on Foata normal form. 5/56 useless extension candidates. Maximal degree in co-relation 123. Up to 33 conditions per place. [2022-12-12 22:03:34,452 INFO L137 encePairwiseOnDemand]: 13/16 looper letters, 11 selfloop transitions, 2 changer transitions 4/19 dead transitions. [2022-12-12 22:03:34,452 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 22 places, 19 transitions, 73 flow [2022-12-12 22:03:34,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 22:03:34,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 22:03:34,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 26 transitions. [2022-12-12 22:03:34,462 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2022-12-12 22:03:34,468 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 2 predicate places. [2022-12-12 22:03:34,468 INFO L82 GeneralOperation]: Start removeDead. Operand has 22 places, 19 transitions, 73 flow [2022-12-12 22:03:34,469 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 18 places, 15 transitions, 59 flow [2022-12-12 22:03:34,470 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 15 transitions, 59 flow [2022-12-12 22:03:34,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 3 states have internal predecessors, (15), 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 22:03:34,471 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:03:34,471 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:03:34,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-12 22:03:34,471 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 22:03:34,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:03:34,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1304410006, now seen corresponding path program 1 times [2022-12-12 22:03:34,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:03:34,473 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121077099] [2022-12-12 22:03:34,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:03:34,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:03:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:03:34,567 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 22:03:34,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:03:34,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121077099] [2022-12-12 22:03:34,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121077099] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:03:34,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:03:34,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 22:03:34,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596493629] [2022-12-12 22:03:34,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:03:34,569 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-12 22:03:34,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:03:34,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-12 22:03:34,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-12-12 22:03:34,570 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 16 [2022-12-12 22:03:34,570 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 15 transitions, 59 flow. Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 22:03:34,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:03:34,571 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 16 [2022-12-12 22:03:34,571 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:03:34,611 INFO L130 PetriNetUnfolder]: 14/50 cut-off events. [2022-12-12 22:03:34,611 INFO L131 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2022-12-12 22:03:34,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 50 events. 14/50 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 148 event pairs, 0 based on Foata normal form. 4/49 useless extension candidates. Maximal degree in co-relation 136. Up to 36 conditions per place. [2022-12-12 22:03:34,612 INFO L137 encePairwiseOnDemand]: 9/16 looper letters, 12 selfloop transitions, 9 changer transitions 0/21 dead transitions. [2022-12-12 22:03:34,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 21 transitions, 123 flow [2022-12-12 22:03:34,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-12 22:03:34,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-12-12 22:03:34,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 23 transitions. [2022-12-12 22:03:34,614 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.4791666666666667 [2022-12-12 22:03:34,614 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 0 predicate places. [2022-12-12 22:03:34,614 INFO L82 GeneralOperation]: Start removeDead. Operand has 20 places, 21 transitions, 123 flow [2022-12-12 22:03:34,615 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 20 places, 21 transitions, 123 flow [2022-12-12 22:03:34,615 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 21 transitions, 123 flow [2022-12-12 22:03:34,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 3 states have internal predecessors, (11), 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 22:03:34,616 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:03:34,616 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:03:34,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-12 22:03:34,616 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 22:03:34,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:03:34,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1591672126, now seen corresponding path program 2 times [2022-12-12 22:03:34,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:03:34,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [584033800] [2022-12-12 22:03:34,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:03:34,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:03:34,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:03:34,756 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 22:03:34,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:03:34,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [584033800] [2022-12-12 22:03:34,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [584033800] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:03:34,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:03:34,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-12 22:03:34,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738929544] [2022-12-12 22:03:34,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:03:34,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-12 22:03:34,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:03:34,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-12 22:03:34,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-12 22:03:34,761 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 16 [2022-12-12 22:03:34,761 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 21 transitions, 123 flow. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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 22:03:34,761 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:03:34,761 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 16 [2022-12-12 22:03:34,761 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:03:34,811 INFO L130 PetriNetUnfolder]: 12/46 cut-off events. [2022-12-12 22:03:34,811 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-12-12 22:03:34,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 185 conditions, 46 events. 12/46 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 111 event pairs, 0 based on Foata normal form. 1/42 useless extension candidates. Maximal degree in co-relation 170. Up to 34 conditions per place. [2022-12-12 22:03:34,812 INFO L137 encePairwiseOnDemand]: 12/16 looper letters, 18 selfloop transitions, 5 changer transitions 4/27 dead transitions. [2022-12-12 22:03:34,813 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 23 places, 27 transitions, 209 flow [2022-12-12 22:03:34,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 22:03:34,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 22:03:34,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 21 transitions. [2022-12-12 22:03:34,815 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.328125 [2022-12-12 22:03:34,817 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 3 predicate places. [2022-12-12 22:03:34,817 INFO L82 GeneralOperation]: Start removeDead. Operand has 23 places, 27 transitions, 209 flow [2022-12-12 22:03:34,818 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 23 places, 23 transitions, 177 flow [2022-12-12 22:03:34,818 INFO L495 AbstractCegarLoop]: Abstraction has has 23 places, 23 transitions, 177 flow [2022-12-12 22:03:34,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 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 22:03:34,818 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:03:34,818 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:03:34,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-12 22:03:34,819 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 22:03:34,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:03:34,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1761331243, now seen corresponding path program 1 times [2022-12-12 22:03:34,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:03:34,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524625226] [2022-12-12 22:03:34,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:03:34,820 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:03:34,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-12 22:03:34,971 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 22:03:34,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-12 22:03:34,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524625226] [2022-12-12 22:03:34,973 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524625226] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-12 22:03:34,973 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-12 22:03:34,973 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-12 22:03:34,973 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852992020] [2022-12-12 22:03:34,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-12 22:03:34,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-12 22:03:34,974 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-12 22:03:34,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-12 22:03:34,975 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-12-12 22:03:34,975 INFO L481 CegarLoopForPetriNet]: Number of universal loopers: 1 out of 16 [2022-12-12 22:03:34,976 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 23 transitions, 177 flow. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 22:03:34,976 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-12-12 22:03:34,976 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 1 of 16 [2022-12-12 22:03:34,976 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-12-12 22:03:35,006 INFO L130 PetriNetUnfolder]: 0/20 cut-off events. [2022-12-12 22:03:35,007 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-12-12 22:03:35,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 106 conditions, 20 events. 0/20 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 27 event pairs, 0 based on Foata normal form. 1/20 useless extension candidates. Maximal degree in co-relation 0. Up to 16 conditions per place. [2022-12-12 22:03:35,007 INFO L137 encePairwiseOnDemand]: 9/16 looper letters, 5 selfloop transitions, 7 changer transitions 0/12 dead transitions. [2022-12-12 22:03:35,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 12 transitions, 119 flow [2022-12-12 22:03:35,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-12 22:03:35,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-12-12 22:03:35,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 17 transitions. [2022-12-12 22:03:35,008 INFO L526 CegarLoopForPetriNet]: DFA transition density 0.265625 [2022-12-12 22:03:35,010 INFO L295 CegarLoopForPetriNet]: 20 programPoint places, 6 predicate places. [2022-12-12 22:03:35,010 INFO L82 GeneralOperation]: Start removeDead. Operand has 26 places, 12 transitions, 119 flow [2022-12-12 22:03:35,010 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 26 places, 12 transitions, 119 flow [2022-12-12 22:03:35,010 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 12 transitions, 119 flow [2022-12-12 22:03:35,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 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 22:03:35,011 INFO L206 CegarLoopForPetriNet]: Found error trace [2022-12-12 22:03:35,011 INFO L214 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-12 22:03:35,011 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-12 22:03:35,011 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-12-12 22:03:35,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-12 22:03:35,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1213880457, now seen corresponding path program 1 times [2022-12-12 22:03:35,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-12 22:03:35,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783166719] [2022-12-12 22:03:35,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-12 22:03:35,013 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-12 22:03:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-12 22:03:35,041 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-12-12 22:03:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-12-12 22:03:35,077 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-12-12 22:03:35,078 INFO L360 BasicCegarLoop]: Counterexample is feasible [2022-12-12 22:03:35,078 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-12-12 22:03:35,083 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2022-12-12 22:03:35,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-12 22:03:35,084 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1] [2022-12-12 22:03:35,089 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-12-12 22:03:35,089 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-12-12 22:03:35,139 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.12 10:03:35 BasicIcfg [2022-12-12 22:03:35,139 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-12-12 22:03:35,140 INFO L158 Benchmark]: Toolchain (without parser) took 4783.60ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 159.2MB in the beginning and 197.8MB in the end (delta: -38.6MB). Peak memory consumption was 124.9MB. Max. memory is 8.0GB. [2022-12-12 22:03:35,140 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 184.5MB. Free memory is still 160.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-12-12 22:03:35,140 INFO L158 Benchmark]: CACSL2BoogieTranslator took 382.92ms. Allocated memory is still 184.5MB. Free memory was 158.6MB in the beginning and 139.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. [2022-12-12 22:03:35,141 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.56ms. Allocated memory is still 184.5MB. Free memory was 139.7MB in the beginning and 138.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 22:03:35,141 INFO L158 Benchmark]: Boogie Preprocessor took 17.87ms. Allocated memory is still 184.5MB. Free memory was 137.6MB in the beginning and 136.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-12-12 22:03:35,141 INFO L158 Benchmark]: RCFGBuilder took 347.74ms. Allocated memory is still 184.5MB. Free memory was 136.6MB in the beginning and 123.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-12-12 22:03:35,142 INFO L158 Benchmark]: TraceAbstraction took 3994.03ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 121.9MB in the beginning and 197.8MB in the end (delta: -75.9MB). Peak memory consumption was 87.2MB. Max. memory is 8.0GB. [2022-12-12 22:03:35,149 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 184.5MB. Free memory is still 160.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 382.92ms. Allocated memory is still 184.5MB. Free memory was 158.6MB in the beginning and 139.7MB in the end (delta: 18.9MB). Peak memory consumption was 18.9MB. Max. memory is 8.0GB. * Boogie Procedure Inliner took 35.56ms. Allocated memory is still 184.5MB. Free memory was 139.7MB in the beginning and 138.2MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 17.87ms. Allocated memory is still 184.5MB. Free memory was 137.6MB in the beginning and 136.6MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 347.74ms. Allocated memory is still 184.5MB. Free memory was 136.6MB in the beginning and 123.5MB in the end (delta: 13.1MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. * TraceAbstraction took 3994.03ms. Allocated memory was 184.5MB in the beginning and 222.3MB in the end (delta: 37.7MB). Free memory was 121.9MB in the beginning and 197.8MB in the end (delta: -75.9MB). Peak memory consumption was 87.2MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 55 PlacesBefore, 20 PlacesAfterwards, 51 TransitionsBefore, 16 TransitionsAfterwards, 240 CoEnabledTransitionPairs, 3 FixpointIterations, 0 TrivialSequentialCompositions, 2 ConcurrentSequentialCompositions, 27 TrivialYvCompositions, 14 ConcurrentYvCompositions, 0 ChoiceCompositions, 43 TotalNumberOfCompositions, Independence Relation Statistics: ConditionTransformingIndependenceRelation.Independence Queries: [ total: 299, independent: 238, independent conditional: 238, independent unconditional: 0, dependent: 61, dependent conditional: 61, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , ConditionTransformingIndependenceRelation.Statistics on underlying relation: DisjunctiveConditionalIndependenceRelation.Independence Queries: [ total: 299, independent: 238, independent conditional: 0, independent unconditional: 238, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , DisjunctiveConditionalIndependenceRelation.Statistics on underlying relation: SemanticConditionEliminator.Independence Queries: [ total: 299, independent: 238, independent conditional: 0, independent unconditional: 238, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticConditionEliminator.Statistics on underlying relation: CachedIndependenceRelation.Independence Queries: [ total: 299, independent: 238, independent conditional: 0, independent unconditional: 238, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 194, independent: 168, independent conditional: 0, independent unconditional: 168, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 194, independent: 153, independent conditional: 0, independent unconditional: 153, dependent: 41, dependent conditional: 0, dependent unconditional: 41, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 41, independent: 15, independent conditional: 0, independent unconditional: 15, dependent: 26, dependent conditional: 0, dependent unconditional: 26, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 116, independent: 49, independent conditional: 0, independent unconditional: 49, dependent: 67, dependent conditional: 0, dependent unconditional: 67, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 299, independent: 70, independent conditional: 0, independent unconditional: 70, dependent: 35, dependent conditional: 0, dependent unconditional: 35, unknown: 194, unknown conditional: 0, unknown unconditional: 194] , Statistics on independence cache: Total cache size (in pairs): 288, Positive cache size: 262, Positive conditional cache size: 0, Positive unconditional cache size: 262, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0, Eliminated conditions: 0, Maximal queried relation: -1 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L681] 0 int g = 0; [L682] 0 pthread_mutex_t A = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L683] 0 pthread_mutex_t D = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L693] 0 pthread_t id; [L694] FCALL, FORK 0 pthread_create(&id, ((void *)0), t_fun, ((void *)0)) VAL [A={3:0}, arg={0:0}, D={4:0}, g=0, id={5:0}, pthread_create(&id, ((void *)0), t_fun, ((void *)0))=-1] [L687] 1 g = 17 VAL [A={3:0}, arg={0:0}, arg={0:0}, D={4:0}, g=17] [L698] CALL 0 __VERIFIER_assert(g == 0) [L19] COND TRUE 0 !(cond) [L19] 0 reach_error() VAL [\old(cond)=0, A={3:0}, arg={0:0}, arg={0:0}, cond=0, D={4:0}, g=17] - UnprovableResult [Line: 694]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 72 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: 3.8s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 17 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 89 IncrementalHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 17 mSolverCounterUnsat, 1 mSDtfsCounter, 89 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=177occurred in iteration=3, InterpolantAutomatonStates: 14, 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, 46 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 119 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 RESULT: Ultimate proved your program to be incorrect! [2022-12-12 22:03:35,175 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...