/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_67-pthread_cond_wait_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:03:35,705 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:03:35,758 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:03:35,766 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:03:35,766 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:03:35,766 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:03:35,767 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:03:35,788 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:03:35,788 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:03:35,794 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:03:35,794 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:03:35,794 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:03:35,795 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:03:35,798 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:03:35,798 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:03:35,798 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:03:35,799 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:03:35,799 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:03:35,799 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:03:35,800 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:03:35,800 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:03:35,800 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:03:35,800 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:03:35,800 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:03:35,800 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:03:35,801 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:03:35,801 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:03:35,802 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:03:35,802 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:03:35,802 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:03:35,803 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:03:35,803 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:03:35,803 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:03:35,803 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:03:35,803 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:03:35,804 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:03:35,804 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:03:35,804 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:03:35,804 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:03:35,804 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:03:35,804 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:03:35,804 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:03:35,995 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:03:36,019 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:03:36,021 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:03:36,022 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:03:36,023 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:03:36,024 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_67-pthread_cond_wait_true_bound2.i [2023-08-03 16:03:36,961 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:03:37,258 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:03:37,259 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_67-pthread_cond_wait_true_bound2.i [2023-08-03 16:03:37,285 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebf0a76c0/d32ff89fa39c4f5b976156c47a49259c/FLAG059175df2 [2023-08-03 16:03:37,300 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebf0a76c0/d32ff89fa39c4f5b976156c47a49259c [2023-08-03 16:03:37,303 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:03:37,306 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:03:37,309 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:03:37,309 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:03:37,312 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:03:37,312 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:03:37" (1/1) ... [2023-08-03 16:03:37,313 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6db696a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:37, skipping insertion in model container [2023-08-03 16:03:37,313 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:03:37" (1/1) ... [2023-08-03 16:03:37,357 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:03:37,503 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_67-pthread_cond_wait_true_bound2.i[1094,1107] [2023-08-03 16:03:37,716 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:03:37,725 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:03:37,736 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_67-pthread_cond_wait_true_bound2.i[1094,1107] [2023-08-03 16:03:37,740 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-03 16:03:37,741 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 16:03:37,748 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [730] [2023-08-03 16:03:37,762 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:03:37,810 WARN L667 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 16:03:37,815 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:03:37,815 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:37 WrapperNode [2023-08-03 16:03:37,815 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:03:37,816 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:03:37,816 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:03:37,816 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:03:37,821 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:37" (1/1) ... [2023-08-03 16:03:37,847 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:37" (1/1) ... [2023-08-03 16:03:37,876 INFO L138 Inliner]: procedures = 354, calls = 38, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 111 [2023-08-03 16:03:37,876 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:03:37,877 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:03:37,877 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:03:37,877 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:03:37,882 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:37" (1/1) ... [2023-08-03 16:03:37,882 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:37" (1/1) ... [2023-08-03 16:03:37,894 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:37" (1/1) ... [2023-08-03 16:03:37,894 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:37" (1/1) ... [2023-08-03 16:03:37,903 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:37" (1/1) ... [2023-08-03 16:03:37,905 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:37" (1/1) ... [2023-08-03 16:03:37,908 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:37" (1/1) ... [2023-08-03 16:03:37,925 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:37" (1/1) ... [2023-08-03 16:03:37,928 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:03:37,929 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:03:37,929 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:03:37,929 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:03:37,930 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:37" (1/1) ... [2023-08-03 16:03:37,938 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:03:37,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:03:37,981 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 16:03:38,001 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 16:03:38,022 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-08-03 16:03:38,022 INFO L130 BoogieDeclarations]: Found specification of procedure f1 [2023-08-03 16:03:38,023 INFO L138 BoogieDeclarations]: Found implementation of procedure f1 [2023-08-03 16:03:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure f2 [2023-08-03 16:03:38,023 INFO L138 BoogieDeclarations]: Found implementation of procedure f2 [2023-08-03 16:03:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:03:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:03:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 16:03:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:03:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 16:03:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:03:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:03:38,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:03:38,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:03:38,024 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 16:03:38,280 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:03:38,282 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:03:38,434 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:03:38,441 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:03:38,441 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 16:03:38,442 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:03:38 BoogieIcfgContainer [2023-08-03 16:03:38,443 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:03:38,444 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:03:38,444 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:03:38,446 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:03:38,447 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:03:37" (1/3) ... [2023-08-03 16:03:38,447 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10acf4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:03:38, skipping insertion in model container [2023-08-03 16:03:38,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:37" (2/3) ... [2023-08-03 16:03:38,448 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10acf4c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:03:38, skipping insertion in model container [2023-08-03 16:03:38,448 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:03:38" (3/3) ... [2023-08-03 16:03:38,449 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_67-pthread_cond_wait_true_bound2.i [2023-08-03 16:03:38,454 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:03:38,460 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:03:38,460 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 16:03:38,460 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:03:38,496 INFO L144 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2023-08-03 16:03:38,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 118 transitions, 258 flow [2023-08-03 16:03:38,581 INFO L124 PetriNetUnfolderBase]: 23/230 cut-off events. [2023-08-03 16:03:38,582 INFO L125 PetriNetUnfolderBase]: For 8/10 co-relation queries the response was YES. [2023-08-03 16:03:38,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 230 events. 23/230 cut-off events. For 8/10 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 719 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 131. Up to 8 conditions per place. [2023-08-03 16:03:38,587 INFO L82 GeneralOperation]: Start removeDead. Operand has 114 places, 118 transitions, 258 flow [2023-08-03 16:03:38,590 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 116 transitions, 248 flow [2023-08-03 16:03:38,592 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:03:38,597 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 114 places, 116 transitions, 248 flow [2023-08-03 16:03:38,599 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 114 places, 116 transitions, 248 flow [2023-08-03 16:03:38,599 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 114 places, 116 transitions, 248 flow [2023-08-03 16:03:38,621 INFO L124 PetriNetUnfolderBase]: 19/218 cut-off events. [2023-08-03 16:03:38,621 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-03 16:03:38,622 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234 conditions, 218 events. 19/218 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 668 event pairs, 0 based on Foata normal form. 0/188 useless extension candidates. Maximal degree in co-relation 127. Up to 8 conditions per place. [2023-08-03 16:03:38,624 INFO L119 LiptonReduction]: Number of co-enabled transitions 2886 [2023-08-03 16:03:40,705 INFO L134 LiptonReduction]: Checked pairs total: 6582 [2023-08-03 16:03:40,705 INFO L136 LiptonReduction]: Total number of compositions: 95 [2023-08-03 16:03:40,719 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:03:40,725 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=true, 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;@7d21b16f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:03:40,725 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 16:03:40,735 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:03:40,735 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2023-08-03 16:03:40,735 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:03:40,735 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:40,736 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:03:40,736 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-03 16:03:40,741 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:40,741 INFO L85 PathProgramCache]: Analyzing trace with hash -178056489, now seen corresponding path program 1 times [2023-08-03 16:03:40,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:40,747 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527790906] [2023-08-03 16:03:40,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:40,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:40,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:03:40,884 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:03:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:03:40,934 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:03:40,935 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:03:40,936 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 16:03:40,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 16:03:40,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-03 16:03:40,937 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 16:03:40,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:03:40,937 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 16:03:40,939 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:03:40,939 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:03:40,971 INFO L144 ThreadInstanceAdder]: Constructed 8 joinOtherThreadTransitions. [2023-08-03 16:03:40,973 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 151 transitions, 350 flow [2023-08-03 16:03:41,037 INFO L124 PetriNetUnfolderBase]: 103/697 cut-off events. [2023-08-03 16:03:41,037 INFO L125 PetriNetUnfolderBase]: For 72/76 co-relation queries the response was YES. [2023-08-03 16:03:41,042 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 697 events. 103/697 cut-off events. For 72/76 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3502 event pairs, 1 based on Foata normal form. 0/605 useless extension candidates. Maximal degree in co-relation 423. Up to 32 conditions per place. [2023-08-03 16:03:41,042 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 151 transitions, 350 flow [2023-08-03 16:03:41,044 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 146 places, 151 transitions, 350 flow [2023-08-03 16:03:41,044 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:03:41,045 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 146 places, 151 transitions, 350 flow [2023-08-03 16:03:41,045 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 146 places, 151 transitions, 350 flow [2023-08-03 16:03:41,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 151 transitions, 350 flow [2023-08-03 16:03:41,093 INFO L124 PetriNetUnfolderBase]: 103/697 cut-off events. [2023-08-03 16:03:41,094 INFO L125 PetriNetUnfolderBase]: For 72/76 co-relation queries the response was YES. [2023-08-03 16:03:41,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 794 conditions, 697 events. 103/697 cut-off events. For 72/76 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3502 event pairs, 1 based on Foata normal form. 0/605 useless extension candidates. Maximal degree in co-relation 423. Up to 32 conditions per place. [2023-08-03 16:03:41,108 INFO L119 LiptonReduction]: Number of co-enabled transitions 8076 [2023-08-03 16:03:43,870 INFO L134 LiptonReduction]: Checked pairs total: 22243 [2023-08-03 16:03:43,870 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-08-03 16:03:43,872 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:03:43,872 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=true, 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;@7d21b16f, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:03:43,872 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 16:03:43,875 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:03:43,875 INFO L124 PetriNetUnfolderBase]: 0/38 cut-off events. [2023-08-03 16:03:43,875 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-03 16:03:43,876 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:43,876 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:03:43,876 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 16:03:43,876 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:43,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1857304360, now seen corresponding path program 1 times [2023-08-03 16:03:43,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:43,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304054386] [2023-08-03 16:03:43,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:43,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:44,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:03:44,077 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:44,077 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304054386] [2023-08-03 16:03:44,077 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304054386] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:03:44,077 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:03:44,077 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:03:44,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [929432323] [2023-08-03 16:03:44,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:03:44,082 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:03:44,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:44,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:03:44,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:03:44,135 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 261 [2023-08-03 16:03:44,137 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 53 transitions, 154 flow. Second operand has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:44,137 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:44,137 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 261 [2023-08-03 16:03:44,138 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:03:48,352 INFO L124 PetriNetUnfolderBase]: 48743/74126 cut-off events. [2023-08-03 16:03:48,352 INFO L125 PetriNetUnfolderBase]: For 6767/6767 co-relation queries the response was YES. [2023-08-03 16:03:48,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 144873 conditions, 74126 events. 48743/74126 cut-off events. For 6767/6767 co-relation queries the response was YES. Maximal size of possible extension queue 2790. Compared 592547 event pairs, 26255 based on Foata normal form. 0/64955 useless extension candidates. Maximal degree in co-relation 81294. Up to 47690 conditions per place. [2023-08-03 16:03:48,811 INFO L140 encePairwiseOnDemand]: 253/261 looper letters, 76 selfloop transitions, 6 changer transitions 0/92 dead transitions. [2023-08-03 16:03:48,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 92 transitions, 433 flow [2023-08-03 16:03:48,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:03:48,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:03:48,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 456 transitions. [2023-08-03 16:03:48,821 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5823754789272031 [2023-08-03 16:03:48,821 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 456 transitions. [2023-08-03 16:03:48,821 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 456 transitions. [2023-08-03 16:03:48,822 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:03:48,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 456 transitions. [2023-08-03 16:03:48,826 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 152.0) internal successors, (456), 3 states have internal predecessors, (456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:48,834 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:48,834 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:48,836 INFO L175 Difference]: Start difference. First operand has 54 places, 53 transitions, 154 flow. Second operand 3 states and 456 transitions. [2023-08-03 16:03:48,836 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 92 transitions, 433 flow [2023-08-03 16:03:48,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 92 transitions, 433 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:03:48,867 INFO L231 Difference]: Finished difference. Result has 58 places, 59 transitions, 206 flow [2023-08-03 16:03:48,868 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=206, PETRI_PLACES=58, PETRI_TRANSITIONS=59} [2023-08-03 16:03:48,873 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2023-08-03 16:03:48,874 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 59 transitions, 206 flow [2023-08-03 16:03:48,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.0) internal successors, (378), 3 states have internal predecessors, (378), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:48,877 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:48,877 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 16:03:48,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 16:03:48,881 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 16:03:48,882 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:48,882 INFO L85 PathProgramCache]: Analyzing trace with hash 180198132, now seen corresponding path program 1 times [2023-08-03 16:03:48,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:48,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295713057] [2023-08-03 16:03:48,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:48,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:48,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:49,004 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:03:49,004 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:49,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295713057] [2023-08-03 16:03:49,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295713057] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:03:49,005 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [366554023] [2023-08-03 16:03:49,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:49,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:49,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:03:49,008 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:03:49,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 16:03:49,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:49,128 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 16:03:49,129 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:03:49,158 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:03:49,158 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:03:49,158 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [366554023] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:03:49,158 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:03:49,159 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 16:03:49,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487363771] [2023-08-03 16:03:49,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:03:49,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:03:49,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:49,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:03:49,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:03:49,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 261 [2023-08-03 16:03:49,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 59 transitions, 206 flow. Second operand has 5 states, 5 states have (on average 127.6) internal successors, (638), 5 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:49,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:49,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 261 [2023-08-03 16:03:49,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:03:52,433 INFO L124 PetriNetUnfolderBase]: 40550/60818 cut-off events. [2023-08-03 16:03:52,434 INFO L125 PetriNetUnfolderBase]: For 24733/26064 co-relation queries the response was YES. [2023-08-03 16:03:52,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139651 conditions, 60818 events. 40550/60818 cut-off events. For 24733/26064 co-relation queries the response was YES. Maximal size of possible extension queue 2778. Compared 479145 event pairs, 23468 based on Foata normal form. 548/54329 useless extension candidates. Maximal degree in co-relation 36808. Up to 53075 conditions per place. [2023-08-03 16:03:52,889 INFO L140 encePairwiseOnDemand]: 257/261 looper letters, 61 selfloop transitions, 5 changer transitions 0/81 dead transitions. [2023-08-03 16:03:52,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 81 transitions, 408 flow [2023-08-03 16:03:52,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:03:52,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:03:52,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 691 transitions. [2023-08-03 16:03:52,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5295019157088122 [2023-08-03 16:03:52,892 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 691 transitions. [2023-08-03 16:03:52,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 691 transitions. [2023-08-03 16:03:52,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:03:52,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 691 transitions. [2023-08-03 16:03:52,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 138.2) internal successors, (691), 5 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:52,896 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 261.0) internal successors, (1566), 6 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:52,896 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 261.0) internal successors, (1566), 6 states have internal predecessors, (1566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:52,897 INFO L175 Difference]: Start difference. First operand has 58 places, 59 transitions, 206 flow. Second operand 5 states and 691 transitions. [2023-08-03 16:03:52,897 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 81 transitions, 408 flow [2023-08-03 16:03:52,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 81 transitions, 380 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 16:03:52,962 INFO L231 Difference]: Finished difference. Result has 58 places, 61 transitions, 205 flow [2023-08-03 16:03:52,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=205, PETRI_PLACES=58, PETRI_TRANSITIONS=61} [2023-08-03 16:03:52,962 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 4 predicate places. [2023-08-03 16:03:52,963 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 61 transitions, 205 flow [2023-08-03 16:03:52,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.6) internal successors, (638), 5 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:52,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:52,963 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2023-08-03 16:03:52,979 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 16:03:53,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:53,169 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 16:03:53,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:53,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1889023260, now seen corresponding path program 1 times [2023-08-03 16:03:53,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:53,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489701534] [2023-08-03 16:03:53,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:53,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:53,212 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 16:03:53,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:53,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489701534] [2023-08-03 16:03:53,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489701534] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:03:53,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:03:53,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:03:53,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866630795] [2023-08-03 16:03:53,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:03:53,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:03:53,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:53,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:03:53,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:03:53,224 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 261 [2023-08-03 16:03:53,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 61 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:53,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:53,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 261 [2023-08-03 16:03:53,225 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:03:56,280 INFO L124 PetriNetUnfolderBase]: 40150/60172 cut-off events. [2023-08-03 16:03:56,280 INFO L125 PetriNetUnfolderBase]: For 14985/16155 co-relation queries the response was YES. [2023-08-03 16:03:56,402 INFO L83 FinitePrefix]: Finished finitePrefix Result has 131574 conditions, 60172 events. 40150/60172 cut-off events. For 14985/16155 co-relation queries the response was YES. Maximal size of possible extension queue 2709. Compared 479646 event pairs, 29312 based on Foata normal form. 462/53335 useless extension candidates. Maximal degree in co-relation 40684. Up to 53074 conditions per place. [2023-08-03 16:03:56,535 INFO L140 encePairwiseOnDemand]: 258/261 looper letters, 49 selfloop transitions, 2 changer transitions 0/66 dead transitions. [2023-08-03 16:03:56,536 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 66 transitions, 320 flow [2023-08-03 16:03:56,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:03:56,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:03:56,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2023-08-03 16:03:56,537 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5478927203065134 [2023-08-03 16:03:56,537 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2023-08-03 16:03:56,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2023-08-03 16:03:56,538 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:03:56,538 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2023-08-03 16:03:56,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:56,540 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:56,540 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:56,540 INFO L175 Difference]: Start difference. First operand has 58 places, 61 transitions, 205 flow. Second operand 3 states and 429 transitions. [2023-08-03 16:03:56,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 66 transitions, 320 flow [2023-08-03 16:03:56,543 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 66 transitions, 319 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:03:56,545 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 203 flow [2023-08-03 16:03:56,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2023-08-03 16:03:56,547 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2023-08-03 16:03:56,547 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 203 flow [2023-08-03 16:03:56,547 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:56,548 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:56,548 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:03:56,548 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 16:03:56,548 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 16:03:56,548 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:56,548 INFO L85 PathProgramCache]: Analyzing trace with hash -472822441, now seen corresponding path program 1 times [2023-08-03 16:03:56,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:56,548 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908668699] [2023-08-03 16:03:56,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:56,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:56,625 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:03:56,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:56,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908668699] [2023-08-03 16:03:56,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908668699] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:03:56,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1484355753] [2023-08-03 16:03:56,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:56,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:56,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:03:56,643 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:03:56,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 16:03:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:56,747 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:03:56,748 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:03:56,767 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:03:56,768 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:03:56,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:03:56,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1484355753] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:03:56,788 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:03:56,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:03:56,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182464966] [2023-08-03 16:03:56,788 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:03:56,789 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:03:56,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:56,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:03:56,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:03:56,800 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 261 [2023-08-03 16:03:56,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 203 flow. Second operand has 5 states, 5 states have (on average 129.4) internal successors, (647), 5 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:56,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:56,802 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 261 [2023-08-03 16:03:56,802 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:03:59,992 INFO L124 PetriNetUnfolderBase]: 39336/58763 cut-off events. [2023-08-03 16:03:59,992 INFO L125 PetriNetUnfolderBase]: For 14817/16128 co-relation queries the response was YES. [2023-08-03 16:04:00,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 128668 conditions, 58763 events. 39336/58763 cut-off events. For 14817/16128 co-relation queries the response was YES. Maximal size of possible extension queue 2729. Compared 467025 event pairs, 19119 based on Foata normal form. 524/52412 useless extension candidates. Maximal degree in co-relation 80787. Up to 51804 conditions per place. [2023-08-03 16:04:00,209 INFO L140 encePairwiseOnDemand]: 258/261 looper letters, 61 selfloop transitions, 3 changer transitions 0/79 dead transitions. [2023-08-03 16:04:00,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 79 transitions, 388 flow [2023-08-03 16:04:00,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:04:00,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:04:00,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 563 transitions. [2023-08-03 16:04:00,211 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.539272030651341 [2023-08-03 16:04:00,211 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 563 transitions. [2023-08-03 16:04:00,211 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 563 transitions. [2023-08-03 16:04:00,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:00,211 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 563 transitions. [2023-08-03 16:04:00,212 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 140.75) internal successors, (563), 4 states have internal predecessors, (563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:00,214 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 261.0) internal successors, (1305), 5 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:00,214 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 261.0) internal successors, (1305), 5 states have internal predecessors, (1305), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:00,214 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 203 flow. Second operand 4 states and 563 transitions. [2023-08-03 16:04:00,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 79 transitions, 388 flow [2023-08-03 16:04:00,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 79 transitions, 384 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 16:04:00,217 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 200 flow [2023-08-03 16:04:00,218 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=200, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2023-08-03 16:04:00,218 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 6 predicate places. [2023-08-03 16:04:00,218 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 200 flow [2023-08-03 16:04:00,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.4) internal successors, (647), 5 states have internal predecessors, (647), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:00,219 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:00,219 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:00,225 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 16:04:00,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:00,423 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 16:04:00,423 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:00,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1312454183, now seen corresponding path program 1 times [2023-08-03 16:04:00,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:00,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1103935759] [2023-08-03 16:04:00,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:00,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:00,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:00,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:00,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1103935759] [2023-08-03 16:04:00,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1103935759] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:00,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:00,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:04:00,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170353947] [2023-08-03 16:04:00,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:00,504 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:04:00,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:00,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:04:00,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:04:00,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 261 [2023-08-03 16:04:00,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 200 flow. Second operand has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:00,520 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:00,520 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 261 [2023-08-03 16:04:00,520 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:01,421 INFO L124 PetriNetUnfolderBase]: 9161/17458 cut-off events. [2023-08-03 16:04:01,421 INFO L125 PetriNetUnfolderBase]: For 4701/4701 co-relation queries the response was YES. [2023-08-03 16:04:01,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38608 conditions, 17458 events. 9161/17458 cut-off events. For 4701/4701 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 148891 event pairs, 1431 based on Foata normal form. 6341/21391 useless extension candidates. Maximal degree in co-relation 19047. Up to 12016 conditions per place. [2023-08-03 16:04:01,465 INFO L140 encePairwiseOnDemand]: 249/261 looper letters, 60 selfloop transitions, 12 changer transitions 0/83 dead transitions. [2023-08-03 16:04:01,465 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 83 transitions, 436 flow [2023-08-03 16:04:01,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:04:01,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:04:01,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2023-08-03 16:04:01,467 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.545338441890166 [2023-08-03 16:04:01,467 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2023-08-03 16:04:01,467 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2023-08-03 16:04:01,467 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:01,467 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2023-08-03 16:04:01,468 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:01,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:01,470 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 261.0) internal successors, (1044), 4 states have internal predecessors, (1044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:01,470 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 200 flow. Second operand 3 states and 427 transitions. [2023-08-03 16:04:01,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 83 transitions, 436 flow [2023-08-03 16:04:01,472 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 83 transitions, 426 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:04:01,473 INFO L231 Difference]: Finished difference. Result has 59 places, 59 transitions, 218 flow [2023-08-03 16:04:01,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=261, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=59, PETRI_TRANSITIONS=59} [2023-08-03 16:04:01,474 INFO L281 CegarLoopForPetriNet]: 54 programPoint places, 5 predicate places. [2023-08-03 16:04:01,474 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 59 transitions, 218 flow [2023-08-03 16:04:01,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:01,474 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:01,474 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:01,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 16:04:01,474 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting f1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 16:04:01,475 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:01,475 INFO L85 PathProgramCache]: Analyzing trace with hash -959166178, now seen corresponding path program 1 times [2023-08-03 16:04:01,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:01,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417132250] [2023-08-03 16:04:01,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:01,475 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:04:01,502 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:04:01,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:04:01,531 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:04:01,531 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:04:01,531 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location f1Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-03 16:04:01,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 5 remaining) [2023-08-03 16:04:01,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 5 remaining) [2023-08-03 16:04:01,531 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-08-03 16:04:01,532 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location f1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-03 16:04:01,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 16:04:01,532 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2023-08-03 16:04:01,535 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 16:04:01,535 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 16:04:01,562 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 04:04:01 BasicIcfg [2023-08-03 16:04:01,562 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 16:04:01,562 INFO L158 Benchmark]: Toolchain (without parser) took 24256.75ms. Allocated memory was 476.1MB in the beginning and 10.9GB in the end (delta: 10.4GB). Free memory was 437.0MB in the beginning and 9.2GB in the end (delta: -8.8GB). Peak memory consumption was 1.6GB. Max. memory is 16.0GB. [2023-08-03 16:04:01,562 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 327.2MB. Free memory is still 279.9MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:04:01,563 INFO L158 Benchmark]: CACSL2BoogieTranslator took 506.32ms. Allocated memory is still 476.1MB. Free memory was 436.5MB in the beginning and 398.2MB in the end (delta: 38.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. [2023-08-03 16:04:01,563 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.43ms. Allocated memory is still 476.1MB. Free memory was 398.2MB in the beginning and 395.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:04:01,563 INFO L158 Benchmark]: Boogie Preprocessor took 51.90ms. Allocated memory is still 476.1MB. Free memory was 395.6MB in the beginning and 393.0MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-03 16:04:01,563 INFO L158 Benchmark]: RCFGBuilder took 513.75ms. Allocated memory is still 476.1MB. Free memory was 393.0MB in the beginning and 371.5MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 16:04:01,564 INFO L158 Benchmark]: TraceAbstraction took 23117.67ms. Allocated memory was 476.1MB in the beginning and 10.9GB in the end (delta: 10.4GB). Free memory was 371.0MB in the beginning and 9.2GB in the end (delta: -8.9GB). Peak memory consumption was 1.6GB. Max. memory is 16.0GB. [2023-08-03 16:04:01,565 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 327.2MB. Free memory is still 279.9MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 506.32ms. Allocated memory is still 476.1MB. Free memory was 436.5MB in the beginning and 398.2MB in the end (delta: 38.3MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 60.43ms. Allocated memory is still 476.1MB. Free memory was 398.2MB in the beginning and 395.6MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 51.90ms. Allocated memory is still 476.1MB. Free memory was 395.6MB in the beginning and 393.0MB in the end (delta: 2.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 513.75ms. Allocated memory is still 476.1MB. Free memory was 393.0MB in the beginning and 371.5MB in the end (delta: 21.5MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 23117.67ms. Allocated memory was 476.1MB in the beginning and 10.9GB in the end (delta: 10.4GB). Free memory was 371.0MB in the beginning and 9.2GB in the end (delta: -8.9GB). Peak memory consumption was 1.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 231]: Unsoundness Warning unspecified type, defaulting to int C: short [231] - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] - GenericResultAtLocation [Line: 730]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [730] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.1s, 114 PlacesBefore, 34 PlacesAfterwards, 116 TransitionsBefore, 32 TransitionsAfterwards, 2886 CoEnabledTransitionPairs, 7 FixpointIterations, 32 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 4 ChoiceCompositions, 95 TotalNumberOfCompositions, 6582 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4201, independent: 4036, independent conditional: 0, independent unconditional: 4036, dependent: 165, dependent conditional: 0, dependent unconditional: 165, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1556, independent: 1532, independent conditional: 0, independent unconditional: 1532, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4201, independent: 2504, independent conditional: 0, independent unconditional: 2504, dependent: 141, dependent conditional: 0, dependent unconditional: 141, unknown: 1556, unknown conditional: 0, unknown unconditional: 1556] , Statistics on independence cache: Total cache size (in pairs): 156, Positive cache size: 144, Positive conditional cache size: 0, Positive unconditional cache size: 144, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.8s, 146 PlacesBefore, 54 PlacesAfterwards, 151 TransitionsBefore, 53 TransitionsAfterwards, 8076 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 56 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 6 ChoiceCompositions, 110 TotalNumberOfCompositions, 22243 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 11518, independent: 11263, independent conditional: 0, independent unconditional: 11263, dependent: 255, dependent conditional: 0, dependent unconditional: 255, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4074, independent: 4027, independent conditional: 0, independent unconditional: 4027, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 11518, independent: 7236, independent conditional: 0, independent unconditional: 7236, dependent: 208, dependent conditional: 0, dependent unconditional: 208, unknown: 4074, unknown conditional: 0, unknown unconditional: 4074] , Statistics on independence cache: Total cache size (in pairs): 371, Positive cache size: 351, Positive conditional cache size: 0, Positive unconditional cache size: 351, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1351] 0 int g; [L1352] 0 pthread_mutex_t mut = { { 0, 0, 0, PTHREAD_MUTEX_TIMED_NP, 0, { { 0, 0 } } } }; [L1353] 0 pthread_cond_t cond = { { {0}, {0}, {0, 0}, {0, 0}, 0, 0, {0, 0} } }; [L1373] 0 pthread_t t1[2]; [L1374] 0 pthread_t t2[2]; [L1375] 0 int asdf=0; VAL [\old(argc)=1150, argc=1150, argv={1152:1151}, argv={1152:1151}, asdf=0, cond={4:0}, g=0, mut={3:0}, t1={5:0}, t2={6:0}] [L1375] COND TRUE 0 asdf<2 [L1375] FCALL, FORK 0 pthread_create(&t1[asdf],((void *)0),f1,((void *)0)) VAL [\old(argc)=1150, argc=1150, argv={1152:1151}, argv={1152:1151}, asdf=0, cond={4:0}, g=0, mut={3:0}, pthread_create(&t1[asdf],((void *)0),f1,((void *)0))=-1, t1={5:0}, t2={6:0}] [L1356] 1 g = 1 VAL [cond={4:0}, g=1, mut={3:0}, ptr={0:0}, ptr={0:0}] [L1375] 0 asdf++ VAL [\old(argc)=1150, argc=1150, argv={1152:1151}, argv={1152:1151}, asdf=1, cond={4:0}, g=1, mut={3:0}, t1={5:0}, t2={6:0}] [L1375] COND TRUE 0 asdf<2 [L1375] FCALL, FORK 0 pthread_create(&t1[asdf],((void *)0),f1,((void *)0)) VAL [\old(argc)=1150, argc=1150, argv={1152:1151}, argv={1152:1151}, asdf=1, cond={4:0}, g=1, mut={3:0}, pthread_create(&t1[asdf],((void *)0),f1,((void *)0))=0, t1={5:0}, t2={6:0}] [L1356] 2 g = 1 VAL [cond={4:0}, g=1, mut={3:0}, ptr={0:0}, ptr={0:0}] [L1358] CALL 1 __VERIFIER_assert(g == 1) [L19] COND FALSE 1 !(!(cond)) [L1358] RET 1 __VERIFIER_assert(g == 1) [L1360] 1 g = 0 VAL [cond={4:0}, g=0, mut={3:0}, ptr={0:0}, ptr={0:0}] [L1362] 1 return ((void *)0); [L1358] CALL 2 __VERIFIER_assert(g == 1) [L19] COND TRUE 2 !(cond) [L19] 2 reach_error() VAL [\old(cond)=1, cond=1, cond={4:0}, g=0, mut={3:0}] - UnprovableResult [Line: 1375]: 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. - UnprovableResult [Line: 1377]: 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 5 procedures, 138 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.4s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 166 locations, 5 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: 20.6s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 16.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 219 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 168 mSDsluCounter, 11 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 544 IncrementalHoareTripleChecker+Invalid, 575 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 11 mSDtfsCounter, 544 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=218occurred in iteration=5, InterpolantAutomatonStates: 18, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 109 NumberOfCodeBlocks, 109 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 97 ConstructedInterpolants, 0 QuantifiedInterpolants, 219 SizeOfPredicates, 0 NumberOfNonLiveVariables, 328 ConjunctsInSsa, 7 ConjunctsInUnsatCore, 8 InterpolantComputations, 4 PerfectInterpolantSequences, 21/29 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! [2023-08-03 16:04:01,589 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...