/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 INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix006_power.oepc_pso.oepc_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 23:08:26,556 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 23:08:26,606 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 23:08:26,610 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 23:08:26,610 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 23:08:26,611 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 23:08:26,611 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 23:08:26,629 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 23:08:26,629 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 23:08:26,629 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 23:08:26,630 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 23:08:26,630 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 23:08:26,631 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 23:08:26,631 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 23:08:26,631 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 23:08:26,632 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 23:08:26,632 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 23:08:26,632 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 23:08:26,633 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 23:08:26,633 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 23:08:26,633 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 23:08:26,634 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 23:08:26,634 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 23:08:26,634 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 23:08:26,635 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 23:08:26,635 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 23:08:26,635 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 23:08:26,636 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 23:08:26,636 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 23:08:26,636 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 23:08:26,636 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:08:26,637 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 23:08:26,637 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 23:08:26,637 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 23:08:26,637 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 23:08:26,638 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 23:08:26,638 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 23:08:26,638 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 23:08:26,638 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 23:08:26,639 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 23:08:26,639 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 23:08:26,641 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 23:08:26,821 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 23:08:26,837 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 23:08:26,839 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 23:08:26,840 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 23:08:26,840 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 23:08:26,841 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix006_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 23:08:27,964 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 23:08:28,228 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 23:08:28,228 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix006_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 23:08:28,248 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/004e104a2/37c47db786bf40ffa8aa5eb39fe00df1/FLAG404488fe7 [2023-08-03 23:08:28,259 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/004e104a2/37c47db786bf40ffa8aa5eb39fe00df1 [2023-08-03 23:08:28,261 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 23:08:28,262 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 23:08:28,263 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 23:08:28,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 23:08:28,266 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 23:08:28,266 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:08:28" (1/1) ... [2023-08-03 23:08:28,267 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60df7440 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:08:28, skipping insertion in model container [2023-08-03 23:08:28,267 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:08:28" (1/1) ... [2023-08-03 23:08:28,317 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 23:08:28,471 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix006_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-03 23:08:28,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:08:28,660 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 23:08:28,674 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix006_power.oepc_pso.oepc_rmo.oepc_bound2.i[969,982] [2023-08-03 23:08:28,690 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:08:28,691 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:08:28,750 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:08:28,781 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:08:28,781 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:08:28,786 INFO L206 MainTranslator]: Completed translation [2023-08-03 23:08:28,787 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:08:28 WrapperNode [2023-08-03 23:08:28,787 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 23:08:28,788 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 23:08:28,788 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 23:08:28,788 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 23:08:28,793 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:08:28" (1/1) ... [2023-08-03 23:08:28,820 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:08:28" (1/1) ... [2023-08-03 23:08:28,861 INFO L138 Inliner]: procedures = 176, calls = 58, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 154 [2023-08-03 23:08:28,861 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 23:08:28,862 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 23:08:28,862 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 23:08:28,862 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 23:08:28,869 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:08:28" (1/1) ... [2023-08-03 23:08:28,870 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:08:28" (1/1) ... [2023-08-03 23:08:28,873 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:08:28" (1/1) ... [2023-08-03 23:08:28,873 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:08:28" (1/1) ... [2023-08-03 23:08:28,881 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:08:28" (1/1) ... [2023-08-03 23:08:28,883 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:08:28" (1/1) ... [2023-08-03 23:08:28,885 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:08:28" (1/1) ... [2023-08-03 23:08:28,886 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:08:28" (1/1) ... [2023-08-03 23:08:28,889 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 23:08:28,890 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 23:08:28,890 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 23:08:28,890 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 23:08:28,891 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:08:28" (1/1) ... [2023-08-03 23:08:28,896 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:08:28,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:08:28,919 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 23:08:28,923 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 23:08:28,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 23:08:28,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 23:08:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 23:08:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 23:08:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 23:08:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 23:08:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 23:08:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 23:08:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 23:08:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 23:08:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 23:08:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 23:08:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 23:08:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 23:08:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 23:08:28,947 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 23:08:29,050 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 23:08:29,052 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 23:08:29,341 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 23:08:29,451 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 23:08:29,451 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 23:08:29,453 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:08:29 BoogieIcfgContainer [2023-08-03 23:08:29,454 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 23:08:29,457 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 23:08:29,457 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 23:08:29,460 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 23:08:29,460 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 11:08:28" (1/3) ... [2023-08-03 23:08:29,461 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f098b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:08:29, skipping insertion in model container [2023-08-03 23:08:29,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:08:28" (2/3) ... [2023-08-03 23:08:29,463 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f098b73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:08:29, skipping insertion in model container [2023-08-03 23:08:29,463 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:08:29" (3/3) ... [2023-08-03 23:08:29,465 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix006_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-03 23:08:29,471 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 23:08:29,479 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 23:08:29,480 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 23:08:29,480 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 23:08:29,540 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:08:29,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 133 transitions, 281 flow [2023-08-03 23:08:29,739 INFO L124 PetriNetUnfolderBase]: 30/456 cut-off events. [2023-08-03 23:08:29,739 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:08:29,744 INFO L83 FinitePrefix]: Finished finitePrefix Result has 481 conditions, 456 events. 30/456 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2022 event pairs, 0 based on Foata normal form. 0/403 useless extension candidates. Maximal degree in co-relation 273. Up to 16 conditions per place. [2023-08-03 23:08:29,744 INFO L82 GeneralOperation]: Start removeDead. Operand has 135 places, 133 transitions, 281 flow [2023-08-03 23:08:29,748 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 109 places, 104 transitions, 223 flow [2023-08-03 23:08:29,751 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:08:29,765 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 109 places, 104 transitions, 223 flow [2023-08-03 23:08:29,767 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 109 places, 104 transitions, 223 flow [2023-08-03 23:08:29,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 104 transitions, 223 flow [2023-08-03 23:08:29,792 INFO L124 PetriNetUnfolderBase]: 6/224 cut-off events. [2023-08-03 23:08:29,792 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:08:29,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 224 events. 6/224 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 668 event pairs, 0 based on Foata normal form. 0/211 useless extension candidates. Maximal degree in co-relation 157. Up to 8 conditions per place. [2023-08-03 23:08:29,796 INFO L119 LiptonReduction]: Number of co-enabled transitions 1584 [2023-08-03 23:08:32,837 INFO L134 LiptonReduction]: Checked pairs total: 4337 [2023-08-03 23:08:32,837 INFO L136 LiptonReduction]: Total number of compositions: 82 [2023-08-03 23:08:32,848 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:08:32,853 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;@3ac7ecaa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:08:32,854 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 23:08:32,858 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:08:32,858 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-03 23:08:32,858 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:08:32,858 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:08:32,859 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 23:08:32,859 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:08:32,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:08:32,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1078730888, now seen corresponding path program 1 times [2023-08-03 23:08:32,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:08:32,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708423585] [2023-08-03 23:08:32,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:08:32,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:08:32,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:08:32,963 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 23:08:32,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:08:33,009 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 23:08:33,011 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 23:08:33,011 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 23:08:33,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 23:08:33,017 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 23:08:33,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 23:08:33,018 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 23:08:33,025 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-03 23:08:33,026 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 23:08:33,026 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 23:08:33,065 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:08:33,072 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 160 transitions, 356 flow [2023-08-03 23:08:33,256 INFO L124 PetriNetUnfolderBase]: 93/1403 cut-off events. [2023-08-03 23:08:33,256 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 23:08:33,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1501 conditions, 1403 events. 93/1403 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9709 event pairs, 0 based on Foata normal form. 0/1242 useless extension candidates. Maximal degree in co-relation 1017. Up to 54 conditions per place. [2023-08-03 23:08:33,266 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 160 transitions, 356 flow [2023-08-03 23:08:33,269 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 142 places, 131 transitions, 298 flow [2023-08-03 23:08:33,269 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:08:33,270 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 142 places, 131 transitions, 298 flow [2023-08-03 23:08:33,270 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 142 places, 131 transitions, 298 flow [2023-08-03 23:08:33,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 142 places, 131 transitions, 298 flow [2023-08-03 23:08:33,359 INFO L124 PetriNetUnfolderBase]: 12/620 cut-off events. [2023-08-03 23:08:33,359 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 23:08:33,361 INFO L83 FinitePrefix]: Finished finitePrefix Result has 718 conditions, 620 events. 12/620 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3231 event pairs, 0 based on Foata normal form. 0/594 useless extension candidates. Maximal degree in co-relation 495. Up to 27 conditions per place. [2023-08-03 23:08:33,370 INFO L119 LiptonReduction]: Number of co-enabled transitions 4464 [2023-08-03 23:08:36,256 INFO L134 LiptonReduction]: Checked pairs total: 16369 [2023-08-03 23:08:36,256 INFO L136 LiptonReduction]: Total number of compositions: 88 [2023-08-03 23:08:36,260 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:08:36,266 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;@3ac7ecaa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:08:36,267 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 23:08:36,274 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:08:36,275 INFO L124 PetriNetUnfolderBase]: 0/62 cut-off events. [2023-08-03 23:08:36,275 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-03 23:08:36,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:08:36,275 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 23:08:36,275 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:08:36,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:08:36,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1351974872, now seen corresponding path program 1 times [2023-08-03 23:08:36,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:08:36,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698930258] [2023-08-03 23:08:36,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:08:36,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:08:36,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:08:36,445 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 23:08:36,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:08:36,445 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698930258] [2023-08-03 23:08:36,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698930258] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:08:36,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:08:36,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 23:08:36,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221851991] [2023-08-03 23:08:36,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:08:36,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:08:36,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:08:36,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:08:36,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:08:36,491 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 248 [2023-08-03 23:08:36,494 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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 23:08:36,494 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:08:36,494 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 248 [2023-08-03 23:08:36,495 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:08:55,563 INFO L124 PetriNetUnfolderBase]: 150910/202774 cut-off events. [2023-08-03 23:08:55,563 INFO L125 PetriNetUnfolderBase]: For 10780/10780 co-relation queries the response was YES. [2023-08-03 23:08:56,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406551 conditions, 202774 events. 150910/202774 cut-off events. For 10780/10780 co-relation queries the response was YES. Maximal size of possible extension queue 6034. Compared 1438838 event pairs, 118610 based on Foata normal form. 0/184036 useless extension candidates. Maximal degree in co-relation 85684. Up to 191286 conditions per place. [2023-08-03 23:08:57,285 INFO L140 encePairwiseOnDemand]: 245/248 looper letters, 40 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-08-03 23:08:57,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 56 transitions, 232 flow [2023-08-03 23:08:57,286 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:08:57,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:08:57,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2023-08-03 23:08:57,297 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5860215053763441 [2023-08-03 23:08:57,298 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2023-08-03 23:08:57,298 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2023-08-03 23:08:57,300 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:08:57,302 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2023-08-03 23:08:57,306 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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 23:08:57,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 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 23:08:57,312 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 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 23:08:57,313 INFO L175 Difference]: Start difference. First operand has 63 places, 50 transitions, 136 flow. Second operand 3 states and 436 transitions. [2023-08-03 23:08:57,314 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 56 transitions, 232 flow [2023-08-03 23:08:57,328 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 56 transitions, 226 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 23:08:57,330 INFO L231 Difference]: Finished difference. Result has 66 places, 51 transitions, 142 flow [2023-08-03 23:08:57,331 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=130, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=142, PETRI_PLACES=66, PETRI_TRANSITIONS=51} [2023-08-03 23:08:57,334 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 3 predicate places. [2023-08-03 23:08:57,335 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 51 transitions, 142 flow [2023-08-03 23:08:57,335 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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 23:08:57,335 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:08:57,335 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 23:08:57,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 23:08:57,336 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:08:57,336 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:08:57,336 INFO L85 PathProgramCache]: Analyzing trace with hash -1327696280, now seen corresponding path program 1 times [2023-08-03 23:08:57,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:08:57,337 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913632600] [2023-08-03 23:08:57,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:08:57,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:08:57,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:08:57,405 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 23:08:57,406 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:08:57,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913632600] [2023-08-03 23:08:57,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913632600] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:08:57,406 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2064499431] [2023-08-03 23:08:57,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:08:57,406 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:08:57,407 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:08:57,410 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 23:08:57,423 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 23:08:57,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:08:57,515 INFO L262 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 23:08:57,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:08:57,553 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 23:08:57,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:08:57,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2064499431] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:08:57,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:08:57,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 23:08:57,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225952808] [2023-08-03 23:08:57,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:08:57,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:08:57,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:08:57,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:08:57,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 23:08:57,575 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 248 [2023-08-03 23:08:57,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 51 transitions, 142 flow. Second operand has 5 states, 5 states have (on average 131.6) internal successors, (658), 5 states have internal predecessors, (658), 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 23:08:57,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:08:57,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 248 [2023-08-03 23:08:57,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:09:15,262 INFO L124 PetriNetUnfolderBase]: 150870/202939 cut-off events. [2023-08-03 23:09:15,263 INFO L125 PetriNetUnfolderBase]: For 9965/9965 co-relation queries the response was YES. [2023-08-03 23:09:15,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 406109 conditions, 202939 events. 150870/202939 cut-off events. For 9965/9965 co-relation queries the response was YES. Maximal size of possible extension queue 6038. Compared 1440346 event pairs, 91710 based on Foata normal form. 25/184356 useless extension candidates. Maximal degree in co-relation 100580. Up to 191157 conditions per place. [2023-08-03 23:09:16,826 INFO L140 encePairwiseOnDemand]: 244/248 looper letters, 47 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-08-03 23:09:16,827 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 64 transitions, 270 flow [2023-08-03 23:09:16,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 23:09:16,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 23:09:16,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 702 transitions. [2023-08-03 23:09:16,831 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5661290322580645 [2023-08-03 23:09:16,831 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 702 transitions. [2023-08-03 23:09:16,831 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 702 transitions. [2023-08-03 23:09:16,832 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:09:16,832 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 702 transitions. [2023-08-03 23:09:16,834 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 140.4) internal successors, (702), 5 states have internal predecessors, (702), 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 23:09:16,837 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 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 23:09:16,838 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 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 23:09:16,838 INFO L175 Difference]: Start difference. First operand has 66 places, 51 transitions, 142 flow. Second operand 5 states and 702 transitions. [2023-08-03 23:09:16,838 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 64 transitions, 270 flow [2023-08-03 23:09:16,840 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 64 transitions, 267 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 23:09:16,841 INFO L231 Difference]: Finished difference. Result has 69 places, 51 transitions, 156 flow [2023-08-03 23:09:16,841 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=156, PETRI_PLACES=69, PETRI_TRANSITIONS=51} [2023-08-03 23:09:16,842 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 6 predicate places. [2023-08-03 23:09:16,842 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 51 transitions, 156 flow [2023-08-03 23:09:16,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 131.6) internal successors, (658), 5 states have internal predecessors, (658), 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 23:09:16,842 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:09:16,842 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:09:16,850 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 23:09:17,048 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 23:09:17,049 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:09:17,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:09:17,049 INFO L85 PathProgramCache]: Analyzing trace with hash -146451748, now seen corresponding path program 1 times [2023-08-03 23:09:17,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:09:17,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1973612980] [2023-08-03 23:09:17,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:09:17,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:09:17,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:09:17,123 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 23:09:17,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:09:17,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1973612980] [2023-08-03 23:09:17,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1973612980] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:09:17,126 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [151758466] [2023-08-03 23:09:17,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:09:17,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:09:17,127 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:09:17,129 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 23:09:17,139 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 23:09:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:09:17,243 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 23:09:17,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:09:17,257 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 23:09:17,257 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:09:17,257 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [151758466] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:09:17,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:09:17,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 23:09:17,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47129795] [2023-08-03 23:09:17,258 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:09:17,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:09:17,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:09:17,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:09:17,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:09:17,271 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 248 [2023-08-03 23:09:17,272 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 51 transitions, 156 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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 23:09:17,272 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:09:17,272 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 248 [2023-08-03 23:09:17,273 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:09:33,825 INFO L124 PetriNetUnfolderBase]: 146266/193181 cut-off events. [2023-08-03 23:09:33,825 INFO L125 PetriNetUnfolderBase]: For 9515/9515 co-relation queries the response was YES. [2023-08-03 23:09:34,434 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390310 conditions, 193181 events. 146266/193181 cut-off events. For 9515/9515 co-relation queries the response was YES. Maximal size of possible extension queue 6155. Compared 1326626 event pairs, 136372 based on Foata normal form. 0/176564 useless extension candidates. Maximal degree in co-relation 125799. Up to 184350 conditions per place. [2023-08-03 23:09:35,127 INFO L140 encePairwiseOnDemand]: 245/248 looper letters, 48 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-08-03 23:09:35,127 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 64 transitions, 284 flow [2023-08-03 23:09:35,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:09:35,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:09:35,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 443 transitions. [2023-08-03 23:09:35,129 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5954301075268817 [2023-08-03 23:09:35,129 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 443 transitions. [2023-08-03 23:09:35,130 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 443 transitions. [2023-08-03 23:09:35,130 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:09:35,130 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 443 transitions. [2023-08-03 23:09:35,131 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.66666666666666) internal successors, (443), 3 states have internal predecessors, (443), 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 23:09:35,134 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 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 23:09:35,135 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 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 23:09:35,135 INFO L175 Difference]: Start difference. First operand has 69 places, 51 transitions, 156 flow. Second operand 3 states and 443 transitions. [2023-08-03 23:09:35,136 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 64 transitions, 284 flow [2023-08-03 23:09:35,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 64 transitions, 277 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 23:09:35,139 INFO L231 Difference]: Finished difference. Result has 70 places, 52 transitions, 164 flow [2023-08-03 23:09:35,139 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=70, PETRI_TRANSITIONS=52} [2023-08-03 23:09:35,141 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 7 predicate places. [2023-08-03 23:09:35,144 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 52 transitions, 164 flow [2023-08-03 23:09:35,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 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 23:09:35,150 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:09:35,150 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:09:35,158 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 23:09:35,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 23:09:35,355 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:09:35,356 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:09:35,356 INFO L85 PathProgramCache]: Analyzing trace with hash -2102030396, now seen corresponding path program 1 times [2023-08-03 23:09:35,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:09:35,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572014253] [2023-08-03 23:09:35,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:09:35,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:09:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:09:35,444 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 23:09:35,444 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:09:35,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572014253] [2023-08-03 23:09:35,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572014253] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:09:35,444 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117854112] [2023-08-03 23:09:35,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:09:35,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:09:35,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:09:35,450 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 23:09:35,456 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 23:09:35,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:09:35,539 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 23:09:35,540 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:09:35,553 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 23:09:35,554 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 23:09:35,577 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 23:09:35,577 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117854112] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 23:09:35,577 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 23:09:35,577 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 23:09:35,577 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428529925] [2023-08-03 23:09:35,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 23:09:35,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:09:35,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:09:35,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:09:35,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:09:35,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 248 [2023-08-03 23:09:35,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 52 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 132.6) internal successors, (663), 5 states have internal predecessors, (663), 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 23:09:35,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:09:35,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 248 [2023-08-03 23:09:35,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:09:49,626 INFO L124 PetriNetUnfolderBase]: 126173/165077 cut-off events. [2023-08-03 23:09:49,626 INFO L125 PetriNetUnfolderBase]: For 8880/8880 co-relation queries the response was YES. [2023-08-03 23:09:50,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 334763 conditions, 165077 events. 126173/165077 cut-off events. For 8880/8880 co-relation queries the response was YES. Maximal size of possible extension queue 5435. Compared 1092395 event pairs, 74825 based on Foata normal form. 5/149987 useless extension candidates. Maximal degree in co-relation 82339. Up to 158221 conditions per place. [2023-08-03 23:09:50,765 INFO L140 encePairwiseOnDemand]: 245/248 looper letters, 48 selfloop transitions, 3 changer transitions 0/64 dead transitions. [2023-08-03 23:09:50,765 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 64 transitions, 285 flow [2023-08-03 23:09:50,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 23:09:50,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 23:09:50,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 571 transitions. [2023-08-03 23:09:50,767 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5756048387096774 [2023-08-03 23:09:50,767 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 571 transitions. [2023-08-03 23:09:50,767 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 571 transitions. [2023-08-03 23:09:50,767 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:09:50,767 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 571 transitions. [2023-08-03 23:09:50,769 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.75) internal successors, (571), 4 states have internal predecessors, (571), 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 23:09:50,771 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 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 23:09:50,771 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 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 23:09:50,772 INFO L175 Difference]: Start difference. First operand has 70 places, 52 transitions, 164 flow. Second operand 4 states and 571 transitions. [2023-08-03 23:09:50,772 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 64 transitions, 285 flow [2023-08-03 23:09:50,776 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 64 transitions, 283 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 23:09:50,777 INFO L231 Difference]: Finished difference. Result has 72 places, 51 transitions, 159 flow [2023-08-03 23:09:50,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=159, PETRI_PLACES=72, PETRI_TRANSITIONS=51} [2023-08-03 23:09:50,778 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2023-08-03 23:09:50,778 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 51 transitions, 159 flow [2023-08-03 23:09:50,779 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.6) internal successors, (663), 5 states have internal predecessors, (663), 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 23:09:50,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:09:50,779 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:09:50,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 23:09:50,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:09:50,984 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:09:50,984 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:09:50,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1569597081, now seen corresponding path program 1 times [2023-08-03 23:09:50,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:09:50,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704076633] [2023-08-03 23:09:50,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:09:50,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:09:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:09:51,091 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 23:09:51,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:09:51,091 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704076633] [2023-08-03 23:09:51,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704076633] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:09:51,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [666611782] [2023-08-03 23:09:51,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:09:51,096 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:09:51,097 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:09:51,098 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 23:09:51,100 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 23:09:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:09:51,189 INFO L262 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 23:09:51,190 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:09:51,207 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 23:09:51,207 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:09:51,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [666611782] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:09:51,207 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:09:51,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 23:09:51,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788628232] [2023-08-03 23:09:51,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:09:51,208 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:09:51,208 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:09:51,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:09:51,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 23:09:51,219 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 248 [2023-08-03 23:09:51,220 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 51 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 132.6) internal successors, (663), 5 states have internal predecessors, (663), 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 23:09:51,220 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:09:51,220 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 248 [2023-08-03 23:09:51,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:10:04,922 INFO L124 PetriNetUnfolderBase]: 124933/162743 cut-off events. [2023-08-03 23:10:04,922 INFO L125 PetriNetUnfolderBase]: For 8093/8093 co-relation queries the response was YES. [2023-08-03 23:10:05,529 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330570 conditions, 162743 events. 124933/162743 cut-off events. For 8093/8093 co-relation queries the response was YES. Maximal size of possible extension queue 5424. Compared 1065495 event pairs, 44518 based on Foata normal form. 400/149633 useless extension candidates. Maximal degree in co-relation 124573. Up to 154115 conditions per place. [2023-08-03 23:10:06,237 INFO L140 encePairwiseOnDemand]: 244/248 looper letters, 69 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2023-08-03 23:10:06,237 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 85 transitions, 373 flow [2023-08-03 23:10:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 23:10:06,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 23:10:06,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 723 transitions. [2023-08-03 23:10:06,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5830645161290322 [2023-08-03 23:10:06,239 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 723 transitions. [2023-08-03 23:10:06,239 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 723 transitions. [2023-08-03 23:10:06,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:10:06,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 723 transitions. [2023-08-03 23:10:06,241 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 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 23:10:06,243 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 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 23:10:06,243 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 248.0) internal successors, (1488), 6 states have internal predecessors, (1488), 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 23:10:06,244 INFO L175 Difference]: Start difference. First operand has 72 places, 51 transitions, 159 flow. Second operand 5 states and 723 transitions. [2023-08-03 23:10:06,244 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 85 transitions, 373 flow [2023-08-03 23:10:06,248 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 85 transitions, 366 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 23:10:06,249 INFO L231 Difference]: Finished difference. Result has 73 places, 51 transitions, 169 flow [2023-08-03 23:10:06,249 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=148, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=169, PETRI_PLACES=73, PETRI_TRANSITIONS=51} [2023-08-03 23:10:06,250 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 10 predicate places. [2023-08-03 23:10:06,250 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 51 transitions, 169 flow [2023-08-03 23:10:06,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 132.6) internal successors, (663), 5 states have internal predecessors, (663), 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 23:10:06,251 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:10:06,251 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:10:06,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 23:10:06,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:10:06,455 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:10:06,455 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:10:06,456 INFO L85 PathProgramCache]: Analyzing trace with hash 2118972770, now seen corresponding path program 1 times [2023-08-03 23:10:06,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:10:06,456 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848356205] [2023-08-03 23:10:06,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:10:06,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:10:06,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:10:06,536 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 23:10:06,536 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:10:06,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848356205] [2023-08-03 23:10:06,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848356205] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:10:06,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453722479] [2023-08-03 23:10:06,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:10:06,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:10:06,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:10:06,538 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 23:10:06,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 23:10:06,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:10:06,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 23:10:06,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:10:06,657 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 23:10:06,657 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 23:10:06,673 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 23:10:06,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453722479] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 23:10:06,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 23:10:06,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 23:10:06,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [449736567] [2023-08-03 23:10:06,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 23:10:06,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:10:06,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:10:06,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:10:06,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:10:06,687 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 130 out of 248 [2023-08-03 23:10:06,689 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 51 transitions, 169 flow. Second operand has 5 states, 5 states have (on average 133.4) internal successors, (667), 5 states have internal predecessors, (667), 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 23:10:06,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:10:06,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 130 of 248 [2023-08-03 23:10:06,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:10:18,688 INFO L124 PetriNetUnfolderBase]: 104198/135908 cut-off events. [2023-08-03 23:10:18,688 INFO L125 PetriNetUnfolderBase]: For 9540/9540 co-relation queries the response was YES. [2023-08-03 23:10:19,360 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276595 conditions, 135908 events. 104198/135908 cut-off events. For 9540/9540 co-relation queries the response was YES. Maximal size of possible extension queue 5016. Compared 884800 event pairs, 77548 based on Foata normal form. 100/124963 useless extension candidates. Maximal degree in co-relation 104449. Up to 127416 conditions per place. [2023-08-03 23:10:19,979 INFO L140 encePairwiseOnDemand]: 245/248 looper letters, 61 selfloop transitions, 3 changer transitions 0/76 dead transitions. [2023-08-03 23:10:19,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 76 transitions, 343 flow [2023-08-03 23:10:19,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 23:10:19,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 23:10:19,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 584 transitions. [2023-08-03 23:10:19,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5887096774193549 [2023-08-03 23:10:19,982 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 584 transitions. [2023-08-03 23:10:19,982 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 584 transitions. [2023-08-03 23:10:19,982 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:10:19,982 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 584 transitions. [2023-08-03 23:10:19,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 146.0) internal successors, (584), 4 states have internal predecessors, (584), 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 23:10:19,985 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 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 23:10:19,985 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 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 23:10:19,985 INFO L175 Difference]: Start difference. First operand has 73 places, 51 transitions, 169 flow. Second operand 4 states and 584 transitions. [2023-08-03 23:10:19,986 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 76 transitions, 343 flow [2023-08-03 23:10:19,992 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 76 transitions, 338 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 23:10:19,996 INFO L231 Difference]: Finished difference. Result has 74 places, 50 transitions, 162 flow [2023-08-03 23:10:19,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=162, PETRI_PLACES=74, PETRI_TRANSITIONS=50} [2023-08-03 23:10:19,998 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 11 predicate places. [2023-08-03 23:10:19,998 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 50 transitions, 162 flow [2023-08-03 23:10:19,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 133.4) internal successors, (667), 5 states have internal predecessors, (667), 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 23:10:19,998 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:10:19,998 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:10:20,004 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-08-03 23:10:20,203 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:10:20,204 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:10:20,204 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:10:20,204 INFO L85 PathProgramCache]: Analyzing trace with hash -1893193018, now seen corresponding path program 1 times [2023-08-03 23:10:20,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:10:20,204 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1720421169] [2023-08-03 23:10:20,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:10:20,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:10:20,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:10:20,347 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 23:10:20,347 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:10:20,347 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1720421169] [2023-08-03 23:10:20,347 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1720421169] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:10:20,347 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:10:20,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 23:10:20,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471947426] [2023-08-03 23:10:20,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:10:20,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 23:10:20,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:10:20,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 23:10:20,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 23:10:20,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 248 [2023-08-03 23:10:20,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 50 transitions, 162 flow. Second operand has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 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 23:10:20,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:10:20,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 248 [2023-08-03 23:10:20,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:10:26,967 INFO L124 PetriNetUnfolderBase]: 57198/78183 cut-off events. [2023-08-03 23:10:26,967 INFO L125 PetriNetUnfolderBase]: For 6455/6455 co-relation queries the response was YES. [2023-08-03 23:10:27,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160770 conditions, 78183 events. 57198/78183 cut-off events. For 6455/6455 co-relation queries the response was YES. Maximal size of possible extension queue 2979. Compared 522439 event pairs, 2958 based on Foata normal form. 10000/81838 useless extension candidates. Maximal degree in co-relation 60519. Up to 58800 conditions per place. [2023-08-03 23:10:27,304 INFO L140 encePairwiseOnDemand]: 246/248 looper letters, 0 selfloop transitions, 0 changer transitions 81/81 dead transitions. [2023-08-03 23:10:27,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 81 transitions, 362 flow [2023-08-03 23:10:27,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 23:10:27,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 23:10:27,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 593 transitions. [2023-08-03 23:10:27,306 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5977822580645161 [2023-08-03 23:10:27,306 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 593 transitions. [2023-08-03 23:10:27,306 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 593 transitions. [2023-08-03 23:10:27,307 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:10:27,307 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 593 transitions. [2023-08-03 23:10:27,308 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 148.25) internal successors, (593), 4 states have internal predecessors, (593), 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 23:10:27,309 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 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 23:10:27,310 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 248.0) internal successors, (1240), 5 states have internal predecessors, (1240), 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 23:10:27,310 INFO L175 Difference]: Start difference. First operand has 74 places, 50 transitions, 162 flow. Second operand 4 states and 593 transitions. [2023-08-03 23:10:27,310 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 81 transitions, 362 flow [2023-08-03 23:10:28,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 81 transitions, 355 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 23:10:28,288 INFO L231 Difference]: Finished difference. Result has 72 places, 0 transitions, 0 flow [2023-08-03 23:10:28,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=72, PETRI_TRANSITIONS=0} [2023-08-03 23:10:28,289 INFO L281 CegarLoopForPetriNet]: 63 programPoint places, 9 predicate places. [2023-08-03 23:10:28,289 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 0 transitions, 0 flow [2023-08-03 23:10:28,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 134.75) internal successors, (539), 4 states have internal predecessors, (539), 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 23:10:28,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 23:10:28,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 23:10:28,289 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 23:10:28,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 23:10:28,289 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:10:28,290 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE (1/2) [2023-08-03 23:10:28,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 160 transitions, 356 flow [2023-08-03 23:10:28,418 INFO L124 PetriNetUnfolderBase]: 93/1403 cut-off events. [2023-08-03 23:10:28,418 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 23:10:28,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1501 conditions, 1403 events. 93/1403 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9709 event pairs, 0 based on Foata normal form. 0/1242 useless extension candidates. Maximal degree in co-relation 1017. Up to 54 conditions per place. [2023-08-03 23:10:28,426 INFO L82 GeneralOperation]: Start removeDead. Operand has 168 places, 160 transitions, 356 flow [2023-08-03 23:10:28,429 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 168 places, 160 transitions, 356 flow [2023-08-03 23:10:28,429 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:10:28,430 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 168 places, 160 transitions, 356 flow [2023-08-03 23:10:28,430 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 168 places, 160 transitions, 356 flow [2023-08-03 23:10:28,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 168 places, 160 transitions, 356 flow [2023-08-03 23:10:28,551 INFO L124 PetriNetUnfolderBase]: 93/1403 cut-off events. [2023-08-03 23:10:28,551 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 23:10:28,558 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1501 conditions, 1403 events. 93/1403 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 9709 event pairs, 0 based on Foata normal form. 0/1242 useless extension candidates. Maximal degree in co-relation 1017. Up to 54 conditions per place. [2023-08-03 23:10:28,581 INFO L119 LiptonReduction]: Number of co-enabled transitions 7248 [2023-08-03 23:10:31,678 INFO L134 LiptonReduction]: Checked pairs total: 25649 [2023-08-03 23:10:31,678 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-03 23:10:31,680 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 23:10:31,680 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;@3ac7ecaa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:10:31,680 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 23:10:31,682 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:10:31,682 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-03 23:10:31,682 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:10:31,682 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:10:31,683 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 23:10:31,683 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:10:31,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:10:31,683 INFO L85 PathProgramCache]: Analyzing trace with hash 28868911, now seen corresponding path program 1 times [2023-08-03 23:10:31,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:10:31,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89249927] [2023-08-03 23:10:31,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:10:31,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:10:31,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:10:31,772 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 23:10:31,773 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:10:31,773 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89249927] [2023-08-03 23:10:31,773 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89249927] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:10:31,773 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:10:31,773 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 23:10:31,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608013513] [2023-08-03 23:10:31,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:10:31,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:10:31,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:10:31,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:10:31,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:10:31,775 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 279 [2023-08-03 23:10:31,776 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 56 transitions, 148 flow. Second operand has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 23:10:31,776 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:10:31,776 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 279 [2023-08-03 23:10:31,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:11:26,965 INFO L124 PetriNetUnfolderBase]: 490490/644821 cut-off events. [2023-08-03 23:11:26,966 INFO L125 PetriNetUnfolderBase]: For 9530/9530 co-relation queries the response was YES. [2023-08-03 23:11:28,823 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1269902 conditions, 644821 events. 490490/644821 cut-off events. For 9530/9530 co-relation queries the response was YES. Maximal size of possible extension queue 17804. Compared 4907705 event pairs, 81617 based on Foata normal form. 0/575141 useless extension candidates. Maximal degree in co-relation 1069303. Up to 565329 conditions per place. [2023-08-03 23:11:30,950 INFO L140 encePairwiseOnDemand]: 273/279 looper letters, 71 selfloop transitions, 3 changer transitions 0/88 dead transitions. [2023-08-03 23:11:30,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 88 transitions, 381 flow [2023-08-03 23:11:30,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:11:30,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:11:30,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 480 transitions. [2023-08-03 23:11:30,951 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5734767025089605 [2023-08-03 23:11:30,951 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 480 transitions. [2023-08-03 23:11:30,951 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 480 transitions. [2023-08-03 23:11:30,952 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:11:30,952 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 480 transitions. [2023-08-03 23:11:30,952 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 160.0) internal successors, (480), 3 states have internal predecessors, (480), 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 23:11:30,953 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 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 23:11:30,954 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 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 23:11:30,954 INFO L175 Difference]: Start difference. First operand has 68 places, 56 transitions, 148 flow. Second operand 3 states and 480 transitions. [2023-08-03 23:11:30,954 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 88 transitions, 381 flow [2023-08-03 23:11:30,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 88 transitions, 375 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 23:11:30,962 INFO L231 Difference]: Finished difference. Result has 71 places, 57 transitions, 161 flow [2023-08-03 23:11:30,962 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=161, PETRI_PLACES=71, PETRI_TRANSITIONS=57} [2023-08-03 23:11:30,962 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 3 predicate places. [2023-08-03 23:11:30,962 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 57 transitions, 161 flow [2023-08-03 23:11:30,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.33333333333334) internal successors, (406), 3 states have internal predecessors, (406), 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 23:11:30,963 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:11:30,963 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 23:11:30,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 23:11:30,963 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:11:30,963 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:11:30,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1983270610, now seen corresponding path program 1 times [2023-08-03 23:11:30,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:11:30,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034153584] [2023-08-03 23:11:30,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:11:30,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:11:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:11:30,996 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 23:11:30,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:11:30,997 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034153584] [2023-08-03 23:11:30,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034153584] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:11:30,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:11:30,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 23:11:30,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61488112] [2023-08-03 23:11:30,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:11:30,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:11:30,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:11:30,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:11:30,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:11:31,006 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 131 out of 279 [2023-08-03 23:11:31,007 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 57 transitions, 161 flow. Second operand has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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 23:11:31,007 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:11:31,007 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 131 of 279 [2023-08-03 23:11:31,007 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:12:30,890 INFO L124 PetriNetUnfolderBase]: 478628/619710 cut-off events. [2023-08-03 23:12:30,891 INFO L125 PetriNetUnfolderBase]: For 50042/50042 co-relation queries the response was YES. [2023-08-03 23:12:32,799 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1311863 conditions, 619710 events. 478628/619710 cut-off events. For 50042/50042 co-relation queries the response was YES. Maximal size of possible extension queue 16920. Compared 4375385 event pairs, 400414 based on Foata normal form. 0/551669 useless extension candidates. Maximal degree in co-relation 863654. Up to 598251 conditions per place. [2023-08-03 23:12:34,871 INFO L140 encePairwiseOnDemand]: 276/279 looper letters, 46 selfloop transitions, 2 changer transitions 0/62 dead transitions. [2023-08-03 23:12:34,871 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 62 transitions, 270 flow [2023-08-03 23:12:34,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:12:34,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:12:34,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-08-03 23:12:34,873 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5256869772998806 [2023-08-03 23:12:34,873 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-08-03 23:12:34,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-08-03 23:12:34,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:12:34,873 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-08-03 23:12:34,874 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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 23:12:34,875 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 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 23:12:34,875 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 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 23:12:34,875 INFO L175 Difference]: Start difference. First operand has 71 places, 57 transitions, 161 flow. Second operand 3 states and 440 transitions. [2023-08-03 23:12:34,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 62 transitions, 270 flow [2023-08-03 23:12:34,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 62 transitions, 266 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 23:12:34,890 INFO L231 Difference]: Finished difference. Result has 73 places, 58 transitions, 170 flow [2023-08-03 23:12:34,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=170, PETRI_PLACES=73, PETRI_TRANSITIONS=58} [2023-08-03 23:12:34,891 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 5 predicate places. [2023-08-03 23:12:34,891 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 58 transitions, 170 flow [2023-08-03 23:12:34,892 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 133.0) internal successors, (399), 3 states have internal predecessors, (399), 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 23:12:34,892 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:12:34,892 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:12:34,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 23:12:34,892 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:12:34,892 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:12:34,892 INFO L85 PathProgramCache]: Analyzing trace with hash -403506483, now seen corresponding path program 1 times [2023-08-03 23:12:34,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:12:34,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547323032] [2023-08-03 23:12:34,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:12:34,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:12:34,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:12:34,921 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 23:12:34,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:12:34,937 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 23:12:34,937 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 23:12:34,938 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 23:12:34,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 23:12:34,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-03 23:12:34,938 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 23:12:34,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 23:12:34,938 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-03 23:12:34,939 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-03 23:12:34,941 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 23:12:34,941 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 23:12:34,978 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 11:12:34 BasicIcfg [2023-08-03 23:12:34,979 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 23:12:34,979 INFO L158 Benchmark]: Toolchain (without parser) took 246716.90ms. Allocated memory was 360.7MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 299.3MB in the beginning and 10.8GB in the end (delta: -10.5GB). Peak memory consumption was 5.2GB. Max. memory is 16.0GB. [2023-08-03 23:12:34,979 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 360.7MB. Free memory is still 308.6MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 23:12:34,979 INFO L158 Benchmark]: CACSL2BoogieTranslator took 524.15ms. Allocated memory is still 360.7MB. Free memory was 299.0MB in the beginning and 275.5MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-03 23:12:34,980 INFO L158 Benchmark]: Boogie Procedure Inliner took 73.27ms. Allocated memory was 360.7MB in the beginning and 562.0MB in the end (delta: 201.3MB). Free memory was 275.2MB in the beginning and 529.3MB in the end (delta: -254.0MB). Peak memory consumption was 9.3MB. Max. memory is 16.0GB. [2023-08-03 23:12:34,980 INFO L158 Benchmark]: Boogie Preprocessor took 27.82ms. Allocated memory is still 562.0MB. Free memory was 529.3MB in the beginning and 526.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 23:12:34,980 INFO L158 Benchmark]: RCFGBuilder took 563.70ms. Allocated memory is still 562.0MB. Free memory was 526.7MB in the beginning and 489.0MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. [2023-08-03 23:12:34,980 INFO L158 Benchmark]: TraceAbstraction took 245521.98ms. Allocated memory was 562.0MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 488.5MB in the beginning and 10.8GB in the end (delta: -10.3GB). Peak memory consumption was 5.2GB. Max. memory is 16.0GB. [2023-08-03 23:12:34,981 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 360.7MB. Free memory is still 308.6MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 524.15ms. Allocated memory is still 360.7MB. Free memory was 299.0MB in the beginning and 275.5MB in the end (delta: 23.5MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 73.27ms. Allocated memory was 360.7MB in the beginning and 562.0MB in the end (delta: 201.3MB). Free memory was 275.2MB in the beginning and 529.3MB in the end (delta: -254.0MB). Peak memory consumption was 9.3MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.82ms. Allocated memory is still 562.0MB. Free memory was 529.3MB in the beginning and 526.7MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 563.70ms. Allocated memory is still 562.0MB. Free memory was 526.7MB in the beginning and 489.0MB in the end (delta: 37.7MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. * TraceAbstraction took 245521.98ms. Allocated memory was 562.0MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 488.5MB in the beginning and 10.8GB in the end (delta: -10.3GB). Peak memory consumption was 5.2GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 109 PlacesBefore, 35 PlacesAfterwards, 104 TransitionsBefore, 28 TransitionsAfterwards, 1584 CoEnabledTransitionPairs, 7 FixpointIterations, 38 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 82 TotalNumberOfCompositions, 4337 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1848, independent: 1694, independent conditional: 0, independent unconditional: 1694, dependent: 154, dependent conditional: 0, dependent unconditional: 154, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 780, independent: 763, independent conditional: 0, independent unconditional: 763, dependent: 17, dependent conditional: 0, dependent unconditional: 17, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1848, independent: 931, independent conditional: 0, independent unconditional: 931, dependent: 137, dependent conditional: 0, dependent unconditional: 137, unknown: 780, unknown conditional: 0, unknown unconditional: 780] , Statistics on independence cache: Total cache size (in pairs): 90, Positive cache size: 81, Positive conditional cache size: 0, Positive unconditional cache size: 81, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 142 PlacesBefore, 63 PlacesAfterwards, 131 TransitionsBefore, 50 TransitionsAfterwards, 4464 CoEnabledTransitionPairs, 6 FixpointIterations, 38 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 88 TotalNumberOfCompositions, 16369 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5880, independent: 5569, independent conditional: 0, independent unconditional: 5569, dependent: 311, dependent conditional: 0, dependent unconditional: 311, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2037, independent: 1992, independent conditional: 0, independent unconditional: 1992, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5880, independent: 3577, independent conditional: 0, independent unconditional: 3577, dependent: 266, dependent conditional: 0, dependent unconditional: 266, unknown: 2037, unknown conditional: 0, unknown unconditional: 2037] , Statistics on independence cache: Total cache size (in pairs): 368, Positive cache size: 345, Positive conditional cache size: 0, Positive unconditional cache size: 345, Negative cache size: 23, Negative conditional cache size: 0, Negative unconditional cache size: 23, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 168 PlacesBefore, 68 PlacesAfterwards, 160 TransitionsBefore, 56 TransitionsAfterwards, 7248 CoEnabledTransitionPairs, 7 FixpointIterations, 38 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 4 ChoiceCompositions, 119 TotalNumberOfCompositions, 25649 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 9496, independent: 9099, independent conditional: 0, independent unconditional: 9099, dependent: 397, dependent conditional: 0, dependent unconditional: 397, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3627, independent: 3553, independent conditional: 0, independent unconditional: 3553, dependent: 74, dependent conditional: 0, dependent unconditional: 74, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 9496, independent: 5546, independent conditional: 0, independent unconditional: 5546, dependent: 323, dependent conditional: 0, dependent unconditional: 323, unknown: 3627, unknown conditional: 0, unknown unconditional: 3627] , Statistics on independence cache: Total cache size (in pairs): 459, Positive cache size: 426, Positive conditional cache size: 0, Positive unconditional cache size: 426, Negative cache size: 33, Negative conditional cache size: 0, Negative unconditional cache size: 33, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p1_EAX = 0; [L713] 0 int __unbuffered_p1_EBX = 0; [L715] 0 int __unbuffered_p2_EAX = 0; [L717] 0 int __unbuffered_p2_EBX = 0; [L718] 0 _Bool main$tmp_guard0; [L719] 0 _Bool main$tmp_guard1; [L721] 0 int x = 0; [L723] 0 int y = 0; [L725] 0 int z = 0; [L726] 0 _Bool z$flush_delayed; [L727] 0 int z$mem_tmp; [L728] 0 _Bool z$r_buff0_thd0; [L729] 0 _Bool z$r_buff0_thd1; [L730] 0 _Bool z$r_buff0_thd2; [L731] 0 _Bool z$r_buff0_thd3; [L732] 0 _Bool z$r_buff1_thd0; [L733] 0 _Bool z$r_buff1_thd1; [L734] 0 _Bool z$r_buff1_thd2; [L735] 0 _Bool z$r_buff1_thd3; [L736] 0 _Bool z$read_delayed; [L737] 0 int *z$read_delayed_var; [L738] 0 int z$w_buff0; [L739] 0 _Bool z$w_buff0_used; [L740] 0 int z$w_buff1; [L741] 0 _Bool z$w_buff1_used; [L742] 0 _Bool weak$$choice0; [L743] 0 _Bool weak$$choice2; [L843] 0 pthread_t t153[2]; [L844] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t153={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L844] COND TRUE 0 asdf<2 [L844] FCALL, FORK 0 pthread_create(&t153[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t153[asdf], ((void *)0), P0, ((void *)0))=-2, t153={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=0, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=0, z$w_buff0_used=0, z$w_buff1=0, z$w_buff1_used=0, z=0] [L747] 1 z$w_buff1 = z$w_buff0 [L748] 1 z$w_buff0 = 1 [L749] 1 z$w_buff1_used = z$w_buff0_used [L750] 1 z$w_buff0_used = (_Bool)1 [L751] CALL 1 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L751] RET 1 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L752] 1 z$r_buff1_thd0 = z$r_buff0_thd0 [L753] 1 z$r_buff1_thd1 = z$r_buff0_thd1 [L754] 1 z$r_buff1_thd2 = z$r_buff0_thd2 [L755] 1 z$r_buff1_thd3 = z$r_buff0_thd3 [L756] 1 z$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L844] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t153={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L844] COND TRUE 0 asdf<2 [L844] FCALL, FORK 0 pthread_create(&t153[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t153[asdf], ((void *)0), P0, ((void *)0))=-1, t153={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=0, z$w_buff1_used=0, z=0] [L747] 2 z$w_buff1 = z$w_buff0 [L748] 2 z$w_buff0 = 1 [L749] 2 z$w_buff1_used = z$w_buff0_used [L750] 2 z$w_buff0_used = (_Bool)1 [L751] CALL 2 __VERIFIER_assert(!(z$w_buff1_used && z$w_buff0_used)) [L18] COND TRUE 2 !expression [L18] 2 reach_error() VAL [\old(expression)=1, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p1_EBX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, expression=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y=0, z$flush_delayed=0, z$mem_tmp=0, z$r_buff0_thd0=0, z$r_buff0_thd1=1, z$r_buff0_thd2=0, z$r_buff0_thd3=0, z$r_buff1_thd0=0, z$r_buff1_thd1=0, z$r_buff1_thd2=0, z$r_buff1_thd3=0, z$read_delayed=0, z$read_delayed_var={0:0}, z$w_buff0=1, z$w_buff0_used=1, z$w_buff1=1, z$w_buff1_used=1, z=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 156 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.4s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred 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 for thread instance sufficiency with 2 thread instances CFG has 10 procedures, 183 locations, 7 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: 115.2s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 109.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 337 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 271 mSDsluCounter, 16 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 873 IncrementalHoareTripleChecker+Invalid, 893 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 16 mSDtfsCounter, 873 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 115 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=169occurred in iteration=5, InterpolantAutomatonStates: 28, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 202 NumberOfCodeBlocks, 202 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 904 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 124/141 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 1 thread instances CFG has 10 procedures, 183 locations, 7 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: 126.6s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 123.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 47 SdHoareTripleChecker+Valid, 0.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 32 mSDsluCounter, 8 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 172 IncrementalHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 8 mSDtfsCounter, 172 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=170occurred in iteration=2, InterpolantAutomatonStates: 6, 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, 0.1s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-03 23:12:34,999 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...