/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 PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_78-equ_racing_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:01:50,256 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:01:50,334 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:01:50,339 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:01:50,340 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:01:50,340 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:01:50,341 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:01:50,372 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:01:50,373 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:01:50,378 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:01:50,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:01:50,379 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:01:50,380 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:01:50,381 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:01:50,381 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:01:50,382 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:01:50,382 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:01:50,382 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:01:50,382 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:01:50,382 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:01:50,383 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:01:50,383 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:01:50,383 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:01:50,383 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:01:50,383 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:01:50,384 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:01:50,384 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:01:50,384 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:01:50,385 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:01:50,385 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:01:50,386 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:01:50,386 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:01:50,386 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:01:50,386 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:01:50,386 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:01:50,387 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:01:50,387 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:01:50,387 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:01:50,387 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:01:50,387 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:01:50,387 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:01:50,387 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:01:50,596 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:01:50,624 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:01:50,626 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:01:50,627 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:01:50,628 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:01:50,629 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_78-equ_racing_bound2.i [2023-08-04 04:01:51,764 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:01:52,045 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:01:52,046 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_78-equ_racing_bound2.i [2023-08-04 04:01:52,062 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72bd05775/c93f4e9a0ac5460b9572a8222a9fd125/FLAG7e01ac1eb [2023-08-04 04:01:52,073 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/72bd05775/c93f4e9a0ac5460b9572a8222a9fd125 [2023-08-04 04:01:52,075 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:01:52,077 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:01:52,078 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:01:52,078 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:01:52,083 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:01:52,084 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:01:52" (1/1) ... [2023-08-04 04:01:52,084 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1aedd424 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:01:52, skipping insertion in model container [2023-08-04 04:01:52,085 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:01:52" (1/1) ... [2023-08-04 04:01:52,121 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:01:52,482 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_78-equ_racing_bound2.i[47038,47051] [2023-08-04 04:01:52,515 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:01:52,528 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:01:52,553 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-04 04:01:52,554 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-04 04:01:52,578 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/goblint-regression_28-race_reach_78-equ_racing_bound2.i[47038,47051] [2023-08-04 04:01:52,603 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:01:52,665 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:01:52,665 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:01:52 WrapperNode [2023-08-04 04:01:52,665 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:01:52,667 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:01:52,667 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:01:52,668 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:01:52,674 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:01:52" (1/1) ... [2023-08-04 04:01:52,703 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:01:52" (1/1) ... [2023-08-04 04:01:52,729 INFO L138 Inliner]: procedures = 271, calls = 56, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 204 [2023-08-04 04:01:52,729 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:01:52,730 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:01:52,730 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:01:52,730 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:01:52,746 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:01:52" (1/1) ... [2023-08-04 04:01:52,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:01:52" (1/1) ... [2023-08-04 04:01:52,749 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:01:52" (1/1) ... [2023-08-04 04:01:52,750 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:01:52" (1/1) ... [2023-08-04 04:01:52,759 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:01:52" (1/1) ... [2023-08-04 04:01:52,764 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:01:52" (1/1) ... [2023-08-04 04:01:52,766 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:01:52" (1/1) ... [2023-08-04 04:01:52,767 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:01:52" (1/1) ... [2023-08-04 04:01:52,770 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:01:52,770 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:01:52,771 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:01:52,771 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:01:52,771 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:01:52" (1/1) ... [2023-08-04 04:01:52,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:01:52,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:01:52,802 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) [2023-08-04 04:01:52,831 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 [2023-08-04 04:01:52,847 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:01:52,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:01:52,847 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 04:01:52,848 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:01:52,848 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 04:01:52,848 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:01:52,849 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-04 04:01:52,850 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-04 04:01:52,850 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:01:52,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:01:52,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:01:52,852 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 04:01:52,980 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:01:52,982 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:01:53,210 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:01:53,220 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:01:53,221 INFO L302 CfgBuilder]: Removed 22 assume(true) statements. [2023-08-04 04:01:53,223 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:01:53 BoogieIcfgContainer [2023-08-04 04:01:53,223 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:01:53,225 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:01:53,225 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:01:53,228 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:01:53,228 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:01:52" (1/3) ... [2023-08-04 04:01:53,232 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72aaf4e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:01:53, skipping insertion in model container [2023-08-04 04:01:53,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:01:52" (2/3) ... [2023-08-04 04:01:53,233 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72aaf4e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:01:53, skipping insertion in model container [2023-08-04 04:01:53,233 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:01:53" (3/3) ... [2023-08-04 04:01:53,237 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_78-equ_racing_bound2.i [2023-08-04 04:01:53,245 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:01:53,255 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:01:53,256 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 04:01:53,256 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:01:53,323 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-04 04:01:53,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 201 transitions, 410 flow [2023-08-04 04:01:53,485 INFO L124 PetriNetUnfolderBase]: 43/271 cut-off events. [2023-08-04 04:01:53,485 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:01:53,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 271 events. 43/271 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 823 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 132. Up to 8 conditions per place. [2023-08-04 04:01:53,493 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 201 transitions, 410 flow [2023-08-04 04:01:53,503 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 194 transitions, 393 flow [2023-08-04 04:01:53,506 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:01:53,519 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 194 transitions, 393 flow [2023-08-04 04:01:53,525 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 194 transitions, 393 flow [2023-08-04 04:01:53,526 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 194 transitions, 393 flow [2023-08-04 04:01:53,584 INFO L124 PetriNetUnfolderBase]: 41/264 cut-off events. [2023-08-04 04:01:53,585 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:01:53,589 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 264 events. 41/264 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 803 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 132. Up to 8 conditions per place. [2023-08-04 04:01:53,595 INFO L119 LiptonReduction]: Number of co-enabled transitions 8664 [2023-08-04 04:02:00,797 INFO L134 LiptonReduction]: Checked pairs total: 18412 [2023-08-04 04:02:00,797 INFO L136 LiptonReduction]: Total number of compositions: 166 [2023-08-04 04:02:00,809 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:02:00,815 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;@36977522, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:02:00,815 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 04:02:00,820 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:02:00,820 INFO L124 PetriNetUnfolderBase]: 7/29 cut-off events. [2023-08-04 04:02:00,820 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:02:00,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:02:00,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 04:02:00,822 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:02:00,826 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:02:00,826 INFO L85 PathProgramCache]: Analyzing trace with hash 733617857, now seen corresponding path program 1 times [2023-08-04 04:02:00,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:02:00,834 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639769922] [2023-08-04 04:02:00,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:02:00,834 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:02:00,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:02:01,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:02:01,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:02:01,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639769922] [2023-08-04 04:02:01,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639769922] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:02:01,153 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:02:01,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:02:01,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [761489887] [2023-08-04 04:02:01,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:02:01,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:02:01,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:02:01,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:02:01,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:02:01,210 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 367 [2023-08-04 04:02:01,215 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 64 transitions, 133 flow. Second operand has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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) [2023-08-04 04:02:01,215 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:02:01,215 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 367 [2023-08-04 04:02:01,216 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:02:01,383 INFO L124 PetriNetUnfolderBase]: 274/651 cut-off events. [2023-08-04 04:02:01,383 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:02:01,384 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1220 conditions, 651 events. 274/651 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3505 event pairs, 0 based on Foata normal form. 119/685 useless extension candidates. Maximal degree in co-relation 1175. Up to 529 conditions per place. [2023-08-04 04:02:01,388 INFO L140 encePairwiseOnDemand]: 342/367 looper letters, 49 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-08-04 04:02:01,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 59 transitions, 225 flow [2023-08-04 04:02:01,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:02:01,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:02:01,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 591 transitions. [2023-08-04 04:02:01,408 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5367847411444142 [2023-08-04 04:02:01,409 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 591 transitions. [2023-08-04 04:02:01,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 591 transitions. [2023-08-04 04:02:01,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:02:01,415 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 591 transitions. [2023-08-04 04:02:01,420 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 197.0) internal successors, (591), 3 states have internal predecessors, (591), 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) [2023-08-04 04:02:01,428 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 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) [2023-08-04 04:02:01,429 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 367.0) internal successors, (1468), 4 states have internal predecessors, (1468), 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) [2023-08-04 04:02:01,430 INFO L175 Difference]: Start difference. First operand has 44 places, 64 transitions, 133 flow. Second operand 3 states and 591 transitions. [2023-08-04 04:02:01,431 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 59 transitions, 225 flow [2023-08-04 04:02:01,433 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 59 transitions, 225 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:02:01,435 INFO L231 Difference]: Finished difference. Result has 46 places, 42 transitions, 97 flow [2023-08-04 04:02:01,437 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=89, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=46, PETRI_TRANSITIONS=42} [2023-08-04 04:02:01,441 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2023-08-04 04:02:01,441 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 42 transitions, 97 flow [2023-08-04 04:02:01,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 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) [2023-08-04 04:02:01,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:02:01,442 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:02:01,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:02:01,442 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:02:01,450 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:02:01,450 INFO L85 PathProgramCache]: Analyzing trace with hash 423867485, now seen corresponding path program 1 times [2023-08-04 04:02:01,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:02:01,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144970433] [2023-08-04 04:02:01,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:02:01,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:02:01,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:02:01,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:02:01,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:02:01,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144970433] [2023-08-04 04:02:01,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144970433] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:02:01,761 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:02:01,761 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:02:01,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740531273] [2023-08-04 04:02:01,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:02:01,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:02:01,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:02:01,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:02:01,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:02:01,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 367 [2023-08-04 04:02:01,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 42 transitions, 97 flow. Second operand has 4 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 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) [2023-08-04 04:02:01,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:02:01,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 367 [2023-08-04 04:02:01,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:02:02,056 INFO L124 PetriNetUnfolderBase]: 301/688 cut-off events. [2023-08-04 04:02:02,056 INFO L125 PetriNetUnfolderBase]: For 32/32 co-relation queries the response was YES. [2023-08-04 04:02:02,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1371 conditions, 688 events. 301/688 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 3609 event pairs, 130 based on Foata normal form. 0/622 useless extension candidates. Maximal degree in co-relation 1355. Up to 367 conditions per place. [2023-08-04 04:02:02,059 INFO L140 encePairwiseOnDemand]: 361/367 looper letters, 37 selfloop transitions, 3 changer transitions 25/72 dead transitions. [2023-08-04 04:02:02,060 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 72 transitions, 290 flow [2023-08-04 04:02:02,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:02:02,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:02:02,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 717 transitions. [2023-08-04 04:02:02,062 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4884196185286104 [2023-08-04 04:02:02,063 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 717 transitions. [2023-08-04 04:02:02,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 717 transitions. [2023-08-04 04:02:02,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:02:02,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 717 transitions. [2023-08-04 04:02:02,065 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 179.25) internal successors, (717), 4 states have internal predecessors, (717), 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) [2023-08-04 04:02:02,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 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) [2023-08-04 04:02:02,068 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 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) [2023-08-04 04:02:02,069 INFO L175 Difference]: Start difference. First operand has 46 places, 42 transitions, 97 flow. Second operand 4 states and 717 transitions. [2023-08-04 04:02:02,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 72 transitions, 290 flow [2023-08-04 04:02:02,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 72 transitions, 284 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:02:02,071 INFO L231 Difference]: Finished difference. Result has 50 places, 39 transitions, 103 flow [2023-08-04 04:02:02,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=93, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=103, PETRI_PLACES=50, PETRI_TRANSITIONS=39} [2023-08-04 04:02:02,073 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 6 predicate places. [2023-08-04 04:02:02,075 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 39 transitions, 103 flow [2023-08-04 04:02:02,076 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 164.75) internal successors, (659), 4 states have internal predecessors, (659), 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) [2023-08-04 04:02:02,080 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:02:02,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:02:02,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 04:02:02,081 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:02:02,082 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:02:02,082 INFO L85 PathProgramCache]: Analyzing trace with hash 290818371, now seen corresponding path program 1 times [2023-08-04 04:02:02,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:02:02,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [476889153] [2023-08-04 04:02:02,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:02:02,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:02:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:02:02,170 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:02:02,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:02:02,170 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [476889153] [2023-08-04 04:02:02,171 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [476889153] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:02:02,171 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124394033] [2023-08-04 04:02:02,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:02:02,172 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:02:02,172 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:02:02,179 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) [2023-08-04 04:02:02,212 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 04:02:02,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:02:02,260 INFO L262 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:02:02,265 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:02:02,785 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:02:02,785 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:02:02,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:02:02,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2124394033] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:02:02,801 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:02:02,801 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:02:02,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723118455] [2023-08-04 04:02:02,802 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:02:02,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:02:02,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:02:02,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:02:02,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:02:02,815 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 367 [2023-08-04 04:02:02,816 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 39 transitions, 103 flow. Second operand has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 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) [2023-08-04 04:02:02,817 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:02:02,817 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 367 [2023-08-04 04:02:02,817 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:02:02,862 INFO L124 PetriNetUnfolderBase]: 32/89 cut-off events. [2023-08-04 04:02:02,863 INFO L125 PetriNetUnfolderBase]: For 14/14 co-relation queries the response was YES. [2023-08-04 04:02:02,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211 conditions, 89 events. 32/89 cut-off events. For 14/14 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 219 event pairs, 9 based on Foata normal form. 17/103 useless extension candidates. Maximal degree in co-relation 204. Up to 66 conditions per place. [2023-08-04 04:02:02,863 INFO L140 encePairwiseOnDemand]: 364/367 looper letters, 0 selfloop transitions, 0 changer transitions 37/37 dead transitions. [2023-08-04 04:02:02,863 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 37 transitions, 165 flow [2023-08-04 04:02:02,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:02:02,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:02:02,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 708 transitions. [2023-08-04 04:02:02,866 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4822888283378747 [2023-08-04 04:02:02,866 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 708 transitions. [2023-08-04 04:02:02,866 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 708 transitions. [2023-08-04 04:02:02,866 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:02:02,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 708 transitions. [2023-08-04 04:02:02,868 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 177.0) internal successors, (708), 4 states have internal predecessors, (708), 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) [2023-08-04 04:02:02,870 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 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) [2023-08-04 04:02:02,871 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 367.0) internal successors, (1835), 5 states have internal predecessors, (1835), 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) [2023-08-04 04:02:02,871 INFO L175 Difference]: Start difference. First operand has 50 places, 39 transitions, 103 flow. Second operand 4 states and 708 transitions. [2023-08-04 04:02:02,871 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 37 transitions, 165 flow [2023-08-04 04:02:02,872 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 37 transitions, 147 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-04 04:02:02,872 INFO L231 Difference]: Finished difference. Result has 27 places, 0 transitions, 0 flow [2023-08-04 04:02:02,873 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=367, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=27, PETRI_TRANSITIONS=0} [2023-08-04 04:02:02,873 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, -17 predicate places. [2023-08-04 04:02:02,873 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 0 transitions, 0 flow [2023-08-04 04:02:02,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.2) internal successors, (851), 5 states have internal predecessors, (851), 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) [2023-08-04 04:02:02,876 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 04:02:02,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 04:02:02,877 INFO L805 garLoopResultBuilder]: Registering result SAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 04:02:02,891 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 04:02:03,091 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 [2023-08-04 04:02:03,092 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-04 04:02:03,094 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 04:02:03,100 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 175 places, 201 transitions, 410 flow [2023-08-04 04:02:03,128 INFO L124 PetriNetUnfolderBase]: 43/271 cut-off events. [2023-08-04 04:02:03,129 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:02:03,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277 conditions, 271 events. 43/271 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 823 event pairs, 0 based on Foata normal form. 0/222 useless extension candidates. Maximal degree in co-relation 132. Up to 8 conditions per place. [2023-08-04 04:02:03,130 INFO L82 GeneralOperation]: Start removeDead. Operand has 175 places, 201 transitions, 410 flow [2023-08-04 04:02:03,131 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 170 places, 194 transitions, 393 flow [2023-08-04 04:02:03,132 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:02:03,132 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 170 places, 194 transitions, 393 flow [2023-08-04 04:02:03,133 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 170 places, 194 transitions, 393 flow [2023-08-04 04:02:03,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 170 places, 194 transitions, 393 flow [2023-08-04 04:02:03,153 INFO L124 PetriNetUnfolderBase]: 41/264 cut-off events. [2023-08-04 04:02:03,154 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:02:03,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 269 conditions, 264 events. 41/264 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 803 event pairs, 0 based on Foata normal form. 0/216 useless extension candidates. Maximal degree in co-relation 132. Up to 8 conditions per place. [2023-08-04 04:02:03,158 INFO L119 LiptonReduction]: Number of co-enabled transitions 8664 [2023-08-04 04:02:08,014 INFO L134 LiptonReduction]: Checked pairs total: 17867 [2023-08-04 04:02:08,014 INFO L136 LiptonReduction]: Total number of compositions: 161 [2023-08-04 04:02:08,016 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:02:08,017 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;@36977522, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:02:08,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:02:08,021 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:02:08,021 INFO L124 PetriNetUnfolderBase]: 15/48 cut-off events. [2023-08-04 04:02:08,021 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:02:08,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:02:08,021 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 04:02:08,021 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:02:08,022 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:02:08,022 INFO L85 PathProgramCache]: Analyzing trace with hash 1729354892, now seen corresponding path program 1 times [2023-08-04 04:02:08,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:02:08,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725501938] [2023-08-04 04:02:08,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:02:08,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:02:08,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:02:08,037 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:02:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:02:08,059 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:02:08,059 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:02:08,059 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:02:08,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 04:02:08,060 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:02:08,060 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 04:02:08,061 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:02:08,061 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:02:08,080 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-04 04:02:08,086 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 223 places, 260 transitions, 538 flow [2023-08-04 04:02:08,127 INFO L124 PetriNetUnfolderBase]: 72/424 cut-off events. [2023-08-04 04:02:08,127 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 04:02:08,130 INFO L83 FinitePrefix]: Finished finitePrefix Result has 438 conditions, 424 events. 72/424 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1596 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 273. Up to 12 conditions per place. [2023-08-04 04:02:08,130 INFO L82 GeneralOperation]: Start removeDead. Operand has 223 places, 260 transitions, 538 flow [2023-08-04 04:02:08,133 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 222 places, 258 transitions, 534 flow [2023-08-04 04:02:08,133 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:02:08,133 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 222 places, 258 transitions, 534 flow [2023-08-04 04:02:08,133 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 222 places, 258 transitions, 534 flow [2023-08-04 04:02:08,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 222 places, 258 transitions, 534 flow [2023-08-04 04:02:08,171 INFO L124 PetriNetUnfolderBase]: 71/422 cut-off events. [2023-08-04 04:02:08,172 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 04:02:08,175 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 422 events. 71/422 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1612 event pairs, 0 based on Foata normal form. 0/342 useless extension candidates. Maximal degree in co-relation 271. Up to 12 conditions per place. [2023-08-04 04:02:08,188 INFO L119 LiptonReduction]: Number of co-enabled transitions 25080 [2023-08-04 04:02:13,413 INFO L134 LiptonReduction]: Checked pairs total: 52594 [2023-08-04 04:02:13,413 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-08-04 04:02:13,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:02:13,416 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;@36977522, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:02:13,416 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 04:02:13,418 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:02:13,419 INFO L124 PetriNetUnfolderBase]: 6/23 cut-off events. [2023-08-04 04:02:13,419 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:02:13,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:02:13,419 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 04:02:13,419 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:02:13,419 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:02:13,420 INFO L85 PathProgramCache]: Analyzing trace with hash 1384375003, now seen corresponding path program 1 times [2023-08-04 04:02:13,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:02:13,420 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [104159530] [2023-08-04 04:02:13,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:02:13,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:02:13,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:02:13,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:02:13,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:02:13,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [104159530] [2023-08-04 04:02:13,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [104159530] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:02:13,463 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:02:13,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:02:13,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970748445] [2023-08-04 04:02:13,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:02:13,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:02:13,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:02:13,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:02:13,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:02:13,473 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 462 [2023-08-04 04:02:13,474 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 98 transitions, 214 flow. Second operand has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 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) [2023-08-04 04:02:13,474 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:02:13,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 462 [2023-08-04 04:02:13,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:02:14,431 INFO L124 PetriNetUnfolderBase]: 8903/13936 cut-off events. [2023-08-04 04:02:14,432 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2023-08-04 04:02:14,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26898 conditions, 13936 events. 8903/13936 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 549. Compared 93113 event pairs, 6020 based on Foata normal form. 3325/15003 useless extension candidates. Maximal degree in co-relation 11579. Up to 12844 conditions per place. [2023-08-04 04:02:14,582 INFO L140 encePairwiseOnDemand]: 428/462 looper letters, 66 selfloop transitions, 2 changer transitions 0/83 dead transitions. [2023-08-04 04:02:14,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 83 transitions, 320 flow [2023-08-04 04:02:14,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:02:14,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:02:14,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 752 transitions. [2023-08-04 04:02:14,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5425685425685426 [2023-08-04 04:02:14,585 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 752 transitions. [2023-08-04 04:02:14,585 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 752 transitions. [2023-08-04 04:02:14,585 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:02:14,585 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 752 transitions. [2023-08-04 04:02:14,587 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 250.66666666666666) internal successors, (752), 3 states have internal predecessors, (752), 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) [2023-08-04 04:02:14,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 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) [2023-08-04 04:02:14,591 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 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) [2023-08-04 04:02:14,591 INFO L175 Difference]: Start difference. First operand has 67 places, 98 transitions, 214 flow. Second operand 3 states and 752 transitions. [2023-08-04 04:02:14,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 83 transitions, 320 flow [2023-08-04 04:02:14,594 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 83 transitions, 320 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:02:14,596 INFO L231 Difference]: Finished difference. Result has 70 places, 68 transitions, 164 flow [2023-08-04 04:02:14,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=164, PETRI_PLACES=70, PETRI_TRANSITIONS=68} [2023-08-04 04:02:14,599 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2023-08-04 04:02:14,599 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 68 transitions, 164 flow [2023-08-04 04:02:14,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 215.33333333333334) internal successors, (646), 3 states have internal predecessors, (646), 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) [2023-08-04 04:02:14,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:02:14,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:02:14,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 04:02:14,601 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:02:14,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:02:14,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1508875475, now seen corresponding path program 1 times [2023-08-04 04:02:14,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:02:14,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814516595] [2023-08-04 04:02:14,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:02:14,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:02:14,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:02:14,733 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:02:14,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:02:14,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814516595] [2023-08-04 04:02:14,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814516595] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:02:14,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:02:14,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:02:14,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506518932] [2023-08-04 04:02:14,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:02:14,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 04:02:14,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:02:14,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 04:02:14,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-04 04:02:14,836 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 206 out of 462 [2023-08-04 04:02:14,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 68 transitions, 164 flow. Second operand has 4 states, 4 states have (on average 207.5) internal successors, (830), 4 states have internal predecessors, (830), 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) [2023-08-04 04:02:14,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:02:14,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 206 of 462 [2023-08-04 04:02:14,838 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:02:16,195 INFO L124 PetriNetUnfolderBase]: 10858/17603 cut-off events. [2023-08-04 04:02:16,195 INFO L125 PetriNetUnfolderBase]: For 754/754 co-relation queries the response was YES. [2023-08-04 04:02:16,223 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35008 conditions, 17603 events. 10858/17603 cut-off events. For 754/754 co-relation queries the response was YES. Maximal size of possible extension queue 740. Compared 128189 event pairs, 3224 based on Foata normal form. 0/15413 useless extension candidates. Maximal degree in co-relation 34900. Up to 10872 conditions per place. [2023-08-04 04:02:16,271 INFO L140 encePairwiseOnDemand]: 449/462 looper letters, 115 selfloop transitions, 12 changer transitions 8/150 dead transitions. [2023-08-04 04:02:16,271 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 150 transitions, 626 flow [2023-08-04 04:02:16,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:02:16,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:02:16,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 961 transitions. [2023-08-04 04:02:16,274 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.520021645021645 [2023-08-04 04:02:16,274 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 961 transitions. [2023-08-04 04:02:16,274 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 961 transitions. [2023-08-04 04:02:16,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:02:16,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 961 transitions. [2023-08-04 04:02:16,277 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 240.25) internal successors, (961), 4 states have internal predecessors, (961), 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) [2023-08-04 04:02:16,280 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 462.0) internal successors, (2310), 5 states have internal predecessors, (2310), 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) [2023-08-04 04:02:16,282 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 462.0) internal successors, (2310), 5 states have internal predecessors, (2310), 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) [2023-08-04 04:02:16,282 INFO L175 Difference]: Start difference. First operand has 70 places, 68 transitions, 164 flow. Second operand 4 states and 961 transitions. [2023-08-04 04:02:16,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 150 transitions, 626 flow [2023-08-04 04:02:16,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 150 transitions, 623 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:02:16,287 INFO L231 Difference]: Finished difference. Result has 75 places, 79 transitions, 262 flow [2023-08-04 04:02:16,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=262, PETRI_PLACES=75, PETRI_TRANSITIONS=79} [2023-08-04 04:02:16,289 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 8 predicate places. [2023-08-04 04:02:16,289 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 79 transitions, 262 flow [2023-08-04 04:02:16,290 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 207.5) internal successors, (830), 4 states have internal predecessors, (830), 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) [2023-08-04 04:02:16,290 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:02:16,290 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:02:16,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 04:02:16,290 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:02:16,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:02:16,291 INFO L85 PathProgramCache]: Analyzing trace with hash 283198393, now seen corresponding path program 1 times [2023-08-04 04:02:16,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:02:16,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812698159] [2023-08-04 04:02:16,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:02:16,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:02:16,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:02:16,350 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:02:16,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:02:16,350 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812698159] [2023-08-04 04:02:16,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812698159] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:02:16,357 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [307519836] [2023-08-04 04:02:16,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:02:16,357 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:02:16,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:02:16,362 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) [2023-08-04 04:02:16,387 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 04:02:16,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:02:16,465 INFO L262 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:02:16,467 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:02:16,522 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:02:16,522 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:02:16,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:02:16,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [307519836] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:02:16,535 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:02:16,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:02:16,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831114628] [2023-08-04 04:02:16,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:02:16,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:02:16,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:02:16,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:02:16,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:02:16,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 462 [2023-08-04 04:02:16,549 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 79 transitions, 262 flow. Second operand has 5 states, 5 states have (on average 215.2) internal successors, (1076), 5 states have internal predecessors, (1076), 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) [2023-08-04 04:02:16,549 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:02:16,549 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 462 [2023-08-04 04:02:16,549 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:02:17,906 INFO L124 PetriNetUnfolderBase]: 10608/17914 cut-off events. [2023-08-04 04:02:17,906 INFO L125 PetriNetUnfolderBase]: For 5053/5053 co-relation queries the response was YES. [2023-08-04 04:02:17,952 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40297 conditions, 17914 events. 10608/17914 cut-off events. For 5053/5053 co-relation queries the response was YES. Maximal size of possible extension queue 726. Compared 137887 event pairs, 826 based on Foata normal form. 15/16691 useless extension candidates. Maximal degree in co-relation 8249. Up to 14949 conditions per place. [2023-08-04 04:02:18,010 INFO L140 encePairwiseOnDemand]: 458/462 looper letters, 110 selfloop transitions, 4 changer transitions 0/129 dead transitions. [2023-08-04 04:02:18,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 129 transitions, 646 flow [2023-08-04 04:02:18,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:02:18,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:02:18,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 950 transitions. [2023-08-04 04:02:18,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5140692640692641 [2023-08-04 04:02:18,016 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 950 transitions. [2023-08-04 04:02:18,016 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 950 transitions. [2023-08-04 04:02:18,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:02:18,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 950 transitions. [2023-08-04 04:02:18,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 237.5) internal successors, (950), 4 states have internal predecessors, (950), 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) [2023-08-04 04:02:18,021 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 462.0) internal successors, (2310), 5 states have internal predecessors, (2310), 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) [2023-08-04 04:02:18,022 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 462.0) internal successors, (2310), 5 states have internal predecessors, (2310), 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) [2023-08-04 04:02:18,022 INFO L175 Difference]: Start difference. First operand has 75 places, 79 transitions, 262 flow. Second operand 4 states and 950 transitions. [2023-08-04 04:02:18,022 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 129 transitions, 646 flow [2023-08-04 04:02:18,026 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 129 transitions, 646 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:02:18,027 INFO L231 Difference]: Finished difference. Result has 80 places, 80 transitions, 284 flow [2023-08-04 04:02:18,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=284, PETRI_PLACES=80, PETRI_TRANSITIONS=80} [2023-08-04 04:02:18,028 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 13 predicate places. [2023-08-04 04:02:18,028 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 80 transitions, 284 flow [2023-08-04 04:02:18,032 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 215.2) internal successors, (1076), 5 states have internal predecessors, (1076), 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) [2023-08-04 04:02:18,032 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:02:18,032 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:02:18,059 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-04 04:02:18,259 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,SelfDestructingSolverStorable6 [2023-08-04 04:02:18,260 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:02:18,260 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:02:18,260 INFO L85 PathProgramCache]: Analyzing trace with hash -491962152, now seen corresponding path program 1 times [2023-08-04 04:02:18,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:02:18,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [979300505] [2023-08-04 04:02:18,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:02:18,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:02:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:02:18,611 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:02:18,612 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:02:18,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [979300505] [2023-08-04 04:02:18,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [979300505] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:02:18,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1076218517] [2023-08-04 04:02:18,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:02:18,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:02:18,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:02:18,614 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) [2023-08-04 04:02:18,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 04:02:18,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:02:18,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 165 conjuncts, 23 conjunts are in the unsatisfiable core [2023-08-04 04:02:18,719 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:02:18,811 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 116 treesize of output 116 [2023-08-04 04:02:18,846 INFO L322 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-08-04 04:02:18,846 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 121 treesize of output 130 [2023-08-04 04:02:18,979 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 45 [2023-08-04 04:02:19,058 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 44 treesize of output 45 [2023-08-04 04:02:19,254 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:02:19,254 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:02:19,278 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_162 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t_ids~0#1.base| v_ArrVal_162) |c_ULTIMATE.start_main_~d~0#1.base|) |c_ULTIMATE.start_main_~d~0#1.offset|) 0)) is different from false [2023-08-04 04:02:19,297 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2023-08-04 04:02:19,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1076218517] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:02:19,297 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:02:19,297 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 6 [2023-08-04 04:02:19,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679229173] [2023-08-04 04:02:19,298 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:02:19,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-04 04:02:19,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:02:19,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-04 04:02:19,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=26, Unknown=1, NotChecked=10, Total=56 [2023-08-04 04:02:19,369 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 462 [2023-08-04 04:02:19,371 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 80 transitions, 284 flow. Second operand has 8 states, 8 states have (on average 175.75) internal successors, (1406), 8 states have internal predecessors, (1406), 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) [2023-08-04 04:02:19,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:02:19,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 462 [2023-08-04 04:02:19,372 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:02:21,105 INFO L124 PetriNetUnfolderBase]: 12343/20356 cut-off events. [2023-08-04 04:02:21,105 INFO L125 PetriNetUnfolderBase]: For 9468/9486 co-relation queries the response was YES. [2023-08-04 04:02:21,149 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47882 conditions, 20356 events. 12343/20356 cut-off events. For 9468/9486 co-relation queries the response was YES. Maximal size of possible extension queue 890. Compared 153498 event pairs, 4235 based on Foata normal form. 6/19076 useless extension candidates. Maximal degree in co-relation 21805. Up to 13604 conditions per place. [2023-08-04 04:02:21,192 INFO L140 encePairwiseOnDemand]: 453/462 looper letters, 116 selfloop transitions, 10 changer transitions 25/166 dead transitions. [2023-08-04 04:02:21,192 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 166 transitions, 850 flow [2023-08-04 04:02:21,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 04:02:21,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 04:02:21,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 999 transitions. [2023-08-04 04:02:21,196 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43246753246753245 [2023-08-04 04:02:21,196 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 999 transitions. [2023-08-04 04:02:21,196 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 999 transitions. [2023-08-04 04:02:21,196 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:02:21,196 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 999 transitions. [2023-08-04 04:02:21,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 199.8) internal successors, (999), 5 states have internal predecessors, (999), 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) [2023-08-04 04:02:21,201 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 462.0) internal successors, (2772), 6 states have internal predecessors, (2772), 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) [2023-08-04 04:02:21,202 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 462.0) internal successors, (2772), 6 states have internal predecessors, (2772), 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) [2023-08-04 04:02:21,202 INFO L175 Difference]: Start difference. First operand has 80 places, 80 transitions, 284 flow. Second operand 5 states and 999 transitions. [2023-08-04 04:02:21,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 166 transitions, 850 flow [2023-08-04 04:02:21,211 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 166 transitions, 843 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-04 04:02:21,213 INFO L231 Difference]: Finished difference. Result has 86 places, 83 transitions, 343 flow [2023-08-04 04:02:21,213 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=280, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=343, PETRI_PLACES=86, PETRI_TRANSITIONS=83} [2023-08-04 04:02:21,214 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 19 predicate places. [2023-08-04 04:02:21,214 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 83 transitions, 343 flow [2023-08-04 04:02:21,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 175.75) internal successors, (1406), 8 states have internal predecessors, (1406), 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) [2023-08-04 04:02:21,215 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:02:21,215 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:02:21,223 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 04:02:21,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:02:21,423 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:02:21,424 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:02:21,424 INFO L85 PathProgramCache]: Analyzing trace with hash 799128076, now seen corresponding path program 1 times [2023-08-04 04:02:21,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:02:21,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87470063] [2023-08-04 04:02:21,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:02:21,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:02:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:02:21,521 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:02:21,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:02:21,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87470063] [2023-08-04 04:02:21,523 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87470063] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:02:21,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022820228] [2023-08-04 04:02:21,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:02:21,523 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:02:21,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:02:21,524 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) [2023-08-04 04:02:21,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 04:02:21,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:02:21,619 INFO L262 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-04 04:02:21,621 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:02:21,653 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-04 04:02:21,673 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-04 04:02:21,673 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-08-04 04:02:21,692 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:02:21,692 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:02:21,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022820228] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:02:21,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:02:21,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 7 [2023-08-04 04:02:21,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602382709] [2023-08-04 04:02:21,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:02:21,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:02:21,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:02:21,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:02:21,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-08-04 04:02:21,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 193 out of 462 [2023-08-04 04:02:21,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 83 transitions, 343 flow. Second operand has 5 states, 5 states have (on average 195.8) internal successors, (979), 5 states have internal predecessors, (979), 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) [2023-08-04 04:02:21,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:02:21,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 193 of 462 [2023-08-04 04:02:21,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:02:22,669 INFO L124 PetriNetUnfolderBase]: 8307/15069 cut-off events. [2023-08-04 04:02:22,669 INFO L125 PetriNetUnfolderBase]: For 9045/9045 co-relation queries the response was YES. [2023-08-04 04:02:22,703 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37812 conditions, 15069 events. 8307/15069 cut-off events. For 9045/9045 co-relation queries the response was YES. Maximal size of possible extension queue 562. Compared 117455 event pairs, 3046 based on Foata normal form. 1690/15705 useless extension candidates. Maximal degree in co-relation 23047. Up to 7968 conditions per place. [2023-08-04 04:02:22,736 INFO L140 encePairwiseOnDemand]: 442/462 looper letters, 101 selfloop transitions, 20 changer transitions 4/134 dead transitions. [2023-08-04 04:02:22,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 134 transitions, 827 flow [2023-08-04 04:02:22,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:02:22,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:02:22,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 877 transitions. [2023-08-04 04:02:22,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4745670995670996 [2023-08-04 04:02:22,739 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 877 transitions. [2023-08-04 04:02:22,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 877 transitions. [2023-08-04 04:02:22,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:02:22,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 877 transitions. [2023-08-04 04:02:22,741 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 219.25) internal successors, (877), 4 states have internal predecessors, (877), 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) [2023-08-04 04:02:22,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 462.0) internal successors, (2310), 5 states have internal predecessors, (2310), 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) [2023-08-04 04:02:22,746 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 462.0) internal successors, (2310), 5 states have internal predecessors, (2310), 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) [2023-08-04 04:02:22,746 INFO L175 Difference]: Start difference. First operand has 86 places, 83 transitions, 343 flow. Second operand 4 states and 877 transitions. [2023-08-04 04:02:22,746 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 134 transitions, 827 flow [2023-08-04 04:02:22,771 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 134 transitions, 819 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:02:22,774 INFO L231 Difference]: Finished difference. Result has 89 places, 90 transitions, 425 flow [2023-08-04 04:02:22,774 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=83, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=63, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=425, PETRI_PLACES=89, PETRI_TRANSITIONS=90} [2023-08-04 04:02:22,776 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 22 predicate places. [2023-08-04 04:02:22,776 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 90 transitions, 425 flow [2023-08-04 04:02:22,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 195.8) internal successors, (979), 5 states have internal predecessors, (979), 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) [2023-08-04 04:02:22,777 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:02:22,777 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:02:22,785 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 04:02:22,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:02:22,983 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:02:22,983 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:02:22,983 INFO L85 PathProgramCache]: Analyzing trace with hash -445906667, now seen corresponding path program 1 times [2023-08-04 04:02:22,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:02:22,984 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46304936] [2023-08-04 04:02:22,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:02:22,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:02:22,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:02:23,059 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:02:23,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:02:23,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46304936] [2023-08-04 04:02:23,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46304936] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:02:23,060 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:02:23,060 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 04:02:23,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836465634] [2023-08-04 04:02:23,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:02:23,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:02:23,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:02:23,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:02:23,061 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:02:23,118 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 462 [2023-08-04 04:02:23,118 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 90 transitions, 425 flow. Second operand has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 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) [2023-08-04 04:02:23,118 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:02:23,118 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 462 [2023-08-04 04:02:23,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:02:24,345 INFO L124 PetriNetUnfolderBase]: 10091/19270 cut-off events. [2023-08-04 04:02:24,345 INFO L125 PetriNetUnfolderBase]: For 15929/15929 co-relation queries the response was YES. [2023-08-04 04:02:24,371 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54085 conditions, 19270 events. 10091/19270 cut-off events. For 15929/15929 co-relation queries the response was YES. Maximal size of possible extension queue 902. Compared 172429 event pairs, 3536 based on Foata normal form. 229/18064 useless extension candidates. Maximal degree in co-relation 36528. Up to 11965 conditions per place. [2023-08-04 04:02:24,402 INFO L140 encePairwiseOnDemand]: 448/462 looper letters, 122 selfloop transitions, 19 changer transitions 5/161 dead transitions. [2023-08-04 04:02:24,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 161 transitions, 1066 flow [2023-08-04 04:02:24,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:02:24,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:02:24,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2023-08-04 04:02:24,404 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5086580086580087 [2023-08-04 04:02:24,404 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2023-08-04 04:02:24,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2023-08-04 04:02:24,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:02:24,404 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2023-08-04 04:02:24,406 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 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) [2023-08-04 04:02:24,408 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 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) [2023-08-04 04:02:24,408 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 462.0) internal successors, (1848), 4 states have internal predecessors, (1848), 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) [2023-08-04 04:02:24,408 INFO L175 Difference]: Start difference. First operand has 89 places, 90 transitions, 425 flow. Second operand 3 states and 705 transitions. [2023-08-04 04:02:24,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 161 transitions, 1066 flow [2023-08-04 04:02:24,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 161 transitions, 1065 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:02:24,432 INFO L231 Difference]: Finished difference. Result has 91 places, 107 transitions, 593 flow [2023-08-04 04:02:24,433 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=424, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=593, PETRI_PLACES=91, PETRI_TRANSITIONS=107} [2023-08-04 04:02:24,433 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 24 predicate places. [2023-08-04 04:02:24,433 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 107 transitions, 593 flow [2023-08-04 04:02:24,434 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 205.66666666666666) internal successors, (617), 3 states have internal predecessors, (617), 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) [2023-08-04 04:02:24,434 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:02:24,434 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:02:24,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-04 04:02:24,434 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:02:24,434 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:02:24,434 INFO L85 PathProgramCache]: Analyzing trace with hash -1289784363, now seen corresponding path program 2 times [2023-08-04 04:02:24,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:02:24,435 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [40952467] [2023-08-04 04:02:24,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:02:24,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:02:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:02:24,528 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:02:24,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:02:24,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [40952467] [2023-08-04 04:02:24,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [40952467] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:02:24,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:02:24,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-04 04:02:24,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248116333] [2023-08-04 04:02:24,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:02:24,529 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:02:24,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:02:24,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:02:24,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:02:24,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 200 out of 462 [2023-08-04 04:02:24,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 107 transitions, 593 flow. Second operand has 5 states, 5 states have (on average 202.8) internal successors, (1014), 5 states have internal predecessors, (1014), 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) [2023-08-04 04:02:24,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:02:24,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 200 of 462 [2023-08-04 04:02:24,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:02:25,480 INFO L124 PetriNetUnfolderBase]: 5625/11514 cut-off events. [2023-08-04 04:02:25,480 INFO L125 PetriNetUnfolderBase]: For 12675/12685 co-relation queries the response was YES. [2023-08-04 04:02:25,495 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35454 conditions, 11514 events. 5625/11514 cut-off events. For 12675/12685 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 100570 event pairs, 1444 based on Foata normal form. 259/11145 useless extension candidates. Maximal degree in co-relation 32265. Up to 6872 conditions per place. [2023-08-04 04:02:25,509 INFO L140 encePairwiseOnDemand]: 456/462 looper letters, 139 selfloop transitions, 11 changer transitions 12/177 dead transitions. [2023-08-04 04:02:25,509 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 177 transitions, 1297 flow [2023-08-04 04:02:25,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:02:25,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:02:25,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 902 transitions. [2023-08-04 04:02:25,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4880952380952381 [2023-08-04 04:02:25,514 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 902 transitions. [2023-08-04 04:02:25,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 902 transitions. [2023-08-04 04:02:25,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:02:25,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 902 transitions. [2023-08-04 04:02:25,517 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 225.5) internal successors, (902), 4 states have internal predecessors, (902), 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) [2023-08-04 04:02:25,519 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 462.0) internal successors, (2310), 5 states have internal predecessors, (2310), 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) [2023-08-04 04:02:25,520 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 462.0) internal successors, (2310), 5 states have internal predecessors, (2310), 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) [2023-08-04 04:02:25,520 INFO L175 Difference]: Start difference. First operand has 91 places, 107 transitions, 593 flow. Second operand 4 states and 902 transitions. [2023-08-04 04:02:25,520 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 177 transitions, 1297 flow [2023-08-04 04:02:25,537 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 177 transitions, 1278 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:02:25,539 INFO L231 Difference]: Finished difference. Result has 94 places, 108 transitions, 610 flow [2023-08-04 04:02:25,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=462, PETRI_DIFFERENCE_MINUEND_FLOW=574, PETRI_DIFFERENCE_MINUEND_PLACES=90, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=107, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=96, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=610, PETRI_PLACES=94, PETRI_TRANSITIONS=108} [2023-08-04 04:02:25,540 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 27 predicate places. [2023-08-04 04:02:25,540 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 108 transitions, 610 flow [2023-08-04 04:02:25,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 202.8) internal successors, (1014), 5 states have internal predecessors, (1014), 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) [2023-08-04 04:02:25,541 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:02:25,541 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:02:25,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-04 04:02:25,541 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t_funErr0ASSERT_VIOLATIONERROR_FUNCTION === [t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:02:25,541 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:02:25,541 INFO L85 PathProgramCache]: Analyzing trace with hash -262785069, now seen corresponding path program 1 times [2023-08-04 04:02:25,542 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:02:25,542 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480308670] [2023-08-04 04:02:25,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:02:25,542 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:02:25,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:02:25,574 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:02:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:02:25,594 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:02:25,595 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:02:25,595 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 04:02:25,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 04:02:25,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 04:02:25,595 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 04:02:25,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-04 04:02:25,596 INFO L445 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1, 1] [2023-08-04 04:02:25,596 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-04 04:02:25,597 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 04:02:25,598 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:02:25,642 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:02:25 BasicIcfg [2023-08-04 04:02:25,642 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:02:25,643 INFO L158 Benchmark]: Toolchain (without parser) took 33566.36ms. Allocated memory was 350.2MB in the beginning and 2.6GB in the end (delta: 2.2GB). Free memory was 296.6MB in the beginning and 2.2GB in the end (delta: -1.9GB). Peak memory consumption was 298.5MB. Max. memory is 16.0GB. [2023-08-04 04:02:25,643 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 350.2MB. Free memory is still 303.3MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:02:25,643 INFO L158 Benchmark]: CACSL2BoogieTranslator took 588.13ms. Allocated memory is still 350.2MB. Free memory was 296.6MB in the beginning and 267.3MB in the end (delta: 29.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-08-04 04:02:25,643 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.45ms. Allocated memory is still 350.2MB. Free memory was 267.3MB in the beginning and 264.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:02:25,644 INFO L158 Benchmark]: Boogie Preprocessor took 39.96ms. Allocated memory is still 350.2MB. Free memory was 264.7MB in the beginning and 262.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:02:25,644 INFO L158 Benchmark]: RCFGBuilder took 452.50ms. Allocated memory is still 350.2MB. Free memory was 262.6MB in the beginning and 242.9MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-04 04:02:25,644 INFO L158 Benchmark]: TraceAbstraction took 32417.54ms. Allocated memory was 350.2MB in the beginning and 2.6GB in the end (delta: 2.2GB). Free memory was 242.2MB in the beginning and 2.2GB in the end (delta: -2.0GB). Peak memory consumption was 244.0MB. Max. memory is 16.0GB. [2023-08-04 04:02:25,645 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 350.2MB. Free memory is still 303.3MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 588.13ms. Allocated memory is still 350.2MB. Free memory was 296.6MB in the beginning and 267.3MB in the end (delta: 29.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 62.45ms. Allocated memory is still 350.2MB. Free memory was 267.3MB in the beginning and 264.7MB in the end (delta: 2.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 39.96ms. Allocated memory is still 350.2MB. Free memory was 264.7MB in the beginning and 262.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 452.50ms. Allocated memory is still 350.2MB. Free memory was 262.6MB in the beginning and 242.9MB in the end (delta: 19.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 32417.54ms. Allocated memory was 350.2MB in the beginning and 2.6GB in the end (delta: 2.2GB). Free memory was 242.2MB in the beginning and 2.2GB in the end (delta: -2.0GB). Peak memory consumption was 244.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 7.3s, 170 PlacesBefore, 44 PlacesAfterwards, 194 TransitionsBefore, 64 TransitionsAfterwards, 8664 CoEnabledTransitionPairs, 8 FixpointIterations, 60 TrivialSequentialCompositions, 83 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 13 ConcurrentYvCompositions, 4 ChoiceCompositions, 166 TotalNumberOfCompositions, 18412 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7930, independent: 7563, independent conditional: 0, independent unconditional: 7563, dependent: 367, dependent conditional: 0, dependent unconditional: 367, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4262, independent: 4204, independent conditional: 0, independent unconditional: 4204, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7930, independent: 3359, independent conditional: 0, independent unconditional: 3359, dependent: 309, dependent conditional: 0, dependent unconditional: 309, unknown: 4262, unknown conditional: 0, unknown unconditional: 4262] , Statistics on independence cache: Total cache size (in pairs): 222, Positive cache size: 194, Positive conditional cache size: 0, Positive unconditional cache size: 194, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 4.9s, 170 PlacesBefore, 44 PlacesAfterwards, 194 TransitionsBefore, 65 TransitionsAfterwards, 8664 CoEnabledTransitionPairs, 8 FixpointIterations, 55 TrivialSequentialCompositions, 84 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 13 ConcurrentYvCompositions, 3 ChoiceCompositions, 161 TotalNumberOfCompositions, 17867 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7425, independent: 7078, independent conditional: 0, independent unconditional: 7078, dependent: 347, dependent conditional: 0, dependent unconditional: 347, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4215, independent: 4152, independent conditional: 0, independent unconditional: 4152, dependent: 63, dependent conditional: 0, dependent unconditional: 63, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7425, independent: 2926, independent conditional: 0, independent unconditional: 2926, dependent: 284, dependent conditional: 0, dependent unconditional: 284, unknown: 4215, unknown conditional: 0, unknown unconditional: 4215] , Statistics on independence cache: Total cache size (in pairs): 205, Positive cache size: 174, Positive conditional cache size: 0, Positive unconditional cache size: 174, Negative cache size: 31, Negative conditional cache size: 0, Negative unconditional cache size: 31, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.3s, 222 PlacesBefore, 67 PlacesAfterwards, 258 TransitionsBefore, 98 TransitionsAfterwards, 25080 CoEnabledTransitionPairs, 7 FixpointIterations, 56 TrivialSequentialCompositions, 115 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 20 ConcurrentYvCompositions, 5 ChoiceCompositions, 202 TotalNumberOfCompositions, 52594 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 20140, independent: 19636, independent conditional: 0, independent unconditional: 19636, dependent: 504, dependent conditional: 0, dependent unconditional: 504, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 11819, independent: 11720, independent conditional: 0, independent unconditional: 11720, dependent: 99, dependent conditional: 0, dependent unconditional: 99, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 20140, independent: 7916, independent conditional: 0, independent unconditional: 7916, dependent: 405, dependent conditional: 0, dependent unconditional: 405, unknown: 11819, unknown conditional: 0, unknown unconditional: 11819] , Statistics on independence cache: Total cache size (in pairs): 402, Positive cache size: 358, Positive conditional cache size: 0, Positive unconditional cache size: 358, Negative cache size: 44, Negative conditional cache size: 0, Negative unconditional cache size: 44, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 999]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1004] 0 pthread_mutex_t __global_lock = { { 0, 0, 0, 0, 0, { { 0, 0 } } } }; [L1006-L1010] 0 struct s { int datum; struct q inside; pthread_mutex_t mutex; } A, B; [L1020] 0 int x = __VERIFIER_nondet_int(); [L1021] COND FALSE 0 !(x == 2147483647) [L1024] 0 struct s *s; [L1025] 0 int *d; [L1026] 0 pthread_mutex_t *m; [L1027] COND FALSE 0 !(\read(x)) [L1031] 0 s = &B [L1032] 0 x++ [L1034] 0 m = &s->mutex [L1035] 0 d = &s->datum [L1036] 0 pthread_t t_ids[2]; [L1036] 0 int i=0; VAL [A={4:0}, B={5:0}, __global_lock={3:0}, d={5:0}, i=0, m={5:12}, s={5:0}, t_ids={6:0}, x++=49, x++=50, x=1] [L1036] COND TRUE 0 i<2 [L1036] FCALL, FORK 0 pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0)) VAL [A={4:0}, B={5:0}, __global_lock={3:0}, d={5:0}, i=0, m={5:12}, pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0))=-1, s={5:0}, t_ids={6:0}, x++=49, x++=50, x=1] [L1036] 0 i++ VAL [A={4:0}, B={5:0}, __global_lock={3:0}, d={5:0}, i=1, m={5:12}, s={5:0}, t_ids={6:0}, x++=49, x++=50, x=1] [L1036] COND TRUE 0 i<2 [L1036] FCALL, FORK 0 pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0)) VAL [A={4:0}, B={5:0}, __global_lock={3:0}, d={5:0}, i=1, m={5:12}, pthread_create(&t_ids[i], ((void *)0), t_fun, ((void *)0))=0, s={5:0}, t_ids={6:0}, x++=49, x++=50, x=1] [L1036] 0 i++ VAL [A={4:0}, B={5:0}, __global_lock={3:0}, d={5:0}, i=2, m={5:12}, s={5:0}, t_ids={6:0}, x++=49, x++=50, x=1] [L1036] COND FALSE 0 !(i<2) [L1038] COND TRUE 0 __VERIFIER_nondet_int() [L1038] EXPR 0 \read(*d) VAL [A={4:0}, B={5:0}, \read(*d)=0, __global_lock={3:0}, d={5:0}, i=2, m={5:12}, s={5:0}, t_ids={6:0}, x++=49, x++=50, x=1] [L1013] COND FALSE 1 !(__VERIFIER_nondet_int()) [L1038] 0 (*d)++ [L1013] EXPR 1 B.datum [L1013] CALL 1 __VERIFIER_assert((B.datum) == 0) [L999] COND TRUE 1 !(cond) [L999] 1 reach_error() VAL [A={4:0}, B={5:0}, \old(cond)=0, __global_lock={3:0}, cond=0] - UnprovableResult [Line: 999]: 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 with 1 thread instances CFG has 3 procedures, 219 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 7.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 259 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 168 mSDsluCounter, 5 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 407 IncrementalHoareTripleChecker+Invalid, 418 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 1 mSDtfsCounter, 407 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=133occurred in iteration=0, InterpolantAutomatonStates: 11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 31 ConstructedInterpolants, 0 QuantifiedInterpolants, 98 SizeOfPredicates, 22 NumberOfNonLiveVariables, 57 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 265 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 17.5s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 9.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 891 SdHoareTripleChecker+Valid, 1.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 650 mSDsluCounter, 22 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 169 IncrementalHoareTripleChecker+Unchecked, 13 mSDsCounter, 125 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2005 IncrementalHoareTripleChecker+Invalid, 2299 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 125 mSolverCounterUnsat, 9 mSDtfsCounter, 2005 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 81 GetRequests, 55 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=610occurred in iteration=7, InterpolantAutomatonStates: 27, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 146 NumberOfCodeBlocks, 146 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 136 ConstructedInterpolants, 17 QuantifiedInterpolants, 1237 SizeOfPredicates, 34 NumberOfNonLiveVariables, 505 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 12 InterpolantComputations, 5 PerfectInterpolantSequences, 10/29 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 3 procedures, 219 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.0s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 4.9s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=135occurred 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 RESULT: Ultimate proved your program to be incorrect! [2023-08-04 04:02:25,665 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...