/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_68-pfscan_protected_loop_minimal_interval_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:03:38,315 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:03:38,395 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:03:38,402 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:03:38,402 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:03:38,403 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:03:38,403 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:03:38,437 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:03:38,438 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:03:38,442 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:03:38,442 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:03:38,443 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:03:38,443 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:03:38,445 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:03:38,445 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:03:38,445 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:03:38,445 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:03:38,445 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:03:38,446 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:03:38,446 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:03:38,446 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:03:38,446 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:03:38,447 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:03:38,447 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:03:38,448 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:03:38,448 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:03:38,448 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:03:38,449 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:03:38,449 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:03:38,449 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:03:38,450 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:03:38,450 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:03:38,450 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:03:38,451 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:03:38,451 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:03:38,451 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:03:38,451 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:03:38,451 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:03:38,451 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:03:38,451 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:03:38,451 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:03:38,452 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:03:38,640 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:03:38,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:03:38,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:03:38,662 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:03:38,662 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:03:38,663 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_68-pfscan_protected_loop_minimal_interval_true_bound2.i [2023-08-03 16:03:39,912 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:03:40,148 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:03:40,148 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_68-pfscan_protected_loop_minimal_interval_true_bound2.i [2023-08-03 16:03:40,163 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df3a6b6df/5ee7b174e34341a7891b6bfc5ec29cf6/FLAG1965f68f6 [2023-08-03 16:03:40,178 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df3a6b6df/5ee7b174e34341a7891b6bfc5ec29cf6 [2023-08-03 16:03:40,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:03:40,182 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:03:40,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:03:40,183 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:03:40,186 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:03:40,186 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,187 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@754f3757 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40, skipping insertion in model container [2023-08-03 16:03:40,187 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,222 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:03:40,345 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_68-pfscan_protected_loop_minimal_interval_true_bound2.i[1115,1128] [2023-08-03 16:03:40,509 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:03:40,518 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:03:40,531 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_68-pfscan_protected_loop_minimal_interval_true_bound2.i[1115,1128] [2023-08-03 16:03:40,550 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-03 16:03:40,552 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [233] [2023-08-03 16:03:40,575 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:03:40,605 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:03:40,605 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40 WrapperNode [2023-08-03 16:03:40,605 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:03:40,606 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:03:40,606 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:03:40,607 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:03:40,612 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,631 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,651 INFO L138 Inliner]: procedures = 165, calls = 35, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 126 [2023-08-03 16:03:40,652 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:03:40,653 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:03:40,653 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:03:40,653 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:03:40,660 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,667 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,667 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,673 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,676 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,678 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,679 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,683 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:03:40,684 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:03:40,684 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:03:40,684 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:03:40,687 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (1/1) ... [2023-08-03 16:03:40,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:03:40,714 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:03:40,731 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 16:03:40,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 16:03:40,764 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 16:03:40,764 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2023-08-03 16:03:40,764 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2023-08-03 16:03:40,764 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:03:40,764 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 16:03:40,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:03:40,765 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:03:40,766 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:03:40,766 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:03:40,767 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:03:40,767 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:03:40,768 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 16:03:40,874 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:03:40,875 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:03:41,063 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:03:41,070 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:03:41,070 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 16:03:41,072 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:03:41 BoogieIcfgContainer [2023-08-03 16:03:41,072 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:03:41,074 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:03:41,074 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:03:41,081 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:03:41,081 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:03:40" (1/3) ... [2023-08-03 16:03:41,083 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a22d28e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:03:41, skipping insertion in model container [2023-08-03 16:03:41,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:03:40" (2/3) ... [2023-08-03 16:03:41,084 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a22d28e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:03:41, skipping insertion in model container [2023-08-03 16:03:41,084 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:03:41" (3/3) ... [2023-08-03 16:03:41,085 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_68-pfscan_protected_loop_minimal_interval_true_bound2.i [2023-08-03 16:03:41,092 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:03:41,099 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:03:41,099 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 16:03:41,099 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:03:41,170 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 16:03:41,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 135 transitions, 275 flow [2023-08-03 16:03:41,291 INFO L124 PetriNetUnfolderBase]: 15/174 cut-off events. [2023-08-03 16:03:41,292 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:03:41,300 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 174 events. 15/174 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 440 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 100. Up to 4 conditions per place. [2023-08-03 16:03:41,300 INFO L82 GeneralOperation]: Start removeDead. Operand has 127 places, 135 transitions, 275 flow [2023-08-03 16:03:41,304 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 135 transitions, 275 flow [2023-08-03 16:03:41,307 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:03:41,315 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 135 transitions, 275 flow [2023-08-03 16:03:41,318 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 135 transitions, 275 flow [2023-08-03 16:03:41,318 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 135 transitions, 275 flow [2023-08-03 16:03:41,346 INFO L124 PetriNetUnfolderBase]: 15/174 cut-off events. [2023-08-03 16:03:41,346 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:03:41,348 INFO L83 FinitePrefix]: Finished finitePrefix Result has 179 conditions, 174 events. 15/174 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 440 event pairs, 0 based on Foata normal form. 0/155 useless extension candidates. Maximal degree in co-relation 100. Up to 4 conditions per place. [2023-08-03 16:03:41,351 INFO L119 LiptonReduction]: Number of co-enabled transitions 5040 [2023-08-03 16:03:44,963 INFO L134 LiptonReduction]: Checked pairs total: 7214 [2023-08-03 16:03:44,963 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-08-03 16:03:44,980 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:03:44,990 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;@86c009b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:03:44,990 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-03 16:03:44,999 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:03:44,999 INFO L124 PetriNetUnfolderBase]: 4/25 cut-off events. [2023-08-03 16:03:44,999 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:03:45,000 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:45,000 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:03:45,001 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-03 16:03:45,008 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:45,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1091291579, now seen corresponding path program 1 times [2023-08-03 16:03:45,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:45,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363256716] [2023-08-03 16:03:45,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:45,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:45,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:03:45,125 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:03:45,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:03:45,163 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:03:45,165 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:03:45,166 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2023-08-03 16:03:45,167 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-03 16:03:45,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-03 16:03:45,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-08-03 16:03:45,168 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-03 16:03:45,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:03:45,169 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 16:03:45,172 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:03:45,172 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:03:45,224 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 16:03:45,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 192 transitions, 396 flow [2023-08-03 16:03:45,266 INFO L124 PetriNetUnfolderBase]: 26/275 cut-off events. [2023-08-03 16:03:45,266 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:03:45,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 275 events. 26/275 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 932 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 175. Up to 6 conditions per place. [2023-08-03 16:03:45,269 INFO L82 GeneralOperation]: Start removeDead. Operand has 179 places, 192 transitions, 396 flow [2023-08-03 16:03:45,272 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 179 places, 192 transitions, 396 flow [2023-08-03 16:03:45,272 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:03:45,272 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 179 places, 192 transitions, 396 flow [2023-08-03 16:03:45,272 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 179 places, 192 transitions, 396 flow [2023-08-03 16:03:45,272 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 179 places, 192 transitions, 396 flow [2023-08-03 16:03:45,305 INFO L124 PetriNetUnfolderBase]: 26/275 cut-off events. [2023-08-03 16:03:45,306 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 16:03:45,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 285 conditions, 275 events. 26/275 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 932 event pairs, 0 based on Foata normal form. 0/242 useless extension candidates. Maximal degree in co-relation 175. Up to 6 conditions per place. [2023-08-03 16:03:45,318 INFO L119 LiptonReduction]: Number of co-enabled transitions 16464 [2023-08-03 16:03:49,167 INFO L134 LiptonReduction]: Checked pairs total: 23739 [2023-08-03 16:03:49,167 INFO L136 LiptonReduction]: Total number of compositions: 186 [2023-08-03 16:03:49,169 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:03:49,170 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;@86c009b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:03:49,170 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 16:03:49,173 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:03:49,173 INFO L124 PetriNetUnfolderBase]: 4/27 cut-off events. [2023-08-03 16:03:49,173 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 16:03:49,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:49,174 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:03:49,174 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:03:49,174 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:49,174 INFO L85 PathProgramCache]: Analyzing trace with hash -915025783, now seen corresponding path program 1 times [2023-08-03 16:03:49,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:49,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058810832] [2023-08-03 16:03:49,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:49,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:49,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:49,718 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:03:49,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:49,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058810832] [2023-08-03 16:03:49,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058810832] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:03:49,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:03:49,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:03:49,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591246904] [2023-08-03 16:03:49,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:03:49,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:03:49,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:49,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:03:49,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:03:49,942 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 378 [2023-08-03 16:03:49,947 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 48 transitions, 108 flow. Second operand has 5 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:49,947 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:49,947 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 378 [2023-08-03 16:03:49,948 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:03:50,816 INFO L124 PetriNetUnfolderBase]: 6811/9690 cut-off events. [2023-08-03 16:03:50,817 INFO L125 PetriNetUnfolderBase]: For 69/69 co-relation queries the response was YES. [2023-08-03 16:03:50,825 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19453 conditions, 9690 events. 6811/9690 cut-off events. For 69/69 co-relation queries the response was YES. Maximal size of possible extension queue 360. Compared 50957 event pairs, 2236 based on Foata normal form. 0/6934 useless extension candidates. Maximal degree in co-relation 11057. Up to 5526 conditions per place. [2023-08-03 16:03:50,868 INFO L140 encePairwiseOnDemand]: 365/378 looper letters, 124 selfloop transitions, 14 changer transitions 0/142 dead transitions. [2023-08-03 16:03:50,869 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 142 transitions, 582 flow [2023-08-03 16:03:50,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 16:03:50,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 16:03:50,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1144 transitions. [2023-08-03 16:03:50,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5044091710758377 [2023-08-03 16:03:50,883 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1144 transitions. [2023-08-03 16:03:50,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1144 transitions. [2023-08-03 16:03:50,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:03:50,887 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1144 transitions. [2023-08-03 16:03:50,892 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 190.66666666666666) internal successors, (1144), 6 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:50,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:50,900 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:50,902 INFO L175 Difference]: Start difference. First operand has 43 places, 48 transitions, 108 flow. Second operand 6 states and 1144 transitions. [2023-08-03 16:03:50,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 142 transitions, 582 flow [2023-08-03 16:03:50,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 142 transitions, 580 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 16:03:50,908 INFO L231 Difference]: Finished difference. Result has 48 places, 57 transitions, 180 flow [2023-08-03 16:03:50,909 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=180, PETRI_PLACES=48, PETRI_TRANSITIONS=57} [2023-08-03 16:03:50,912 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 5 predicate places. [2023-08-03 16:03:50,912 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 57 transitions, 180 flow [2023-08-03 16:03:50,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 165.2) internal successors, (826), 5 states have internal predecessors, (826), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:50,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:50,913 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:03:50,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 16:03:50,913 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:03:50,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:50,914 INFO L85 PathProgramCache]: Analyzing trace with hash -237332080, now seen corresponding path program 1 times [2023-08-03 16:03:50,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:50,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593648659] [2023-08-03 16:03:50,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:50,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:50,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:51,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:03:51,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:51,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593648659] [2023-08-03 16:03:51,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593648659] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:03:51,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [281581188] [2023-08-03 16:03:51,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:51,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:51,206 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:03:51,213 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:03:51,220 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 16:03:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:51,291 INFO L262 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-03 16:03:51,302 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:03:51,365 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-03 16:03:51,366 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-03 16:03:51,374 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 [2023-08-03 16:03:51,394 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 [2023-08-03 16:03:51,469 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 [2023-08-03 16:03:51,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:03:51,483 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:03:51,540 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_48 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_48) |c_~#pqb~0.base|) |c_~#pqb~0.offset|) 0)) is different from false [2023-08-03 16:03:51,563 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-08-03 16:03:51,564 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [281581188] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:03:51,564 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:03:51,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 9 [2023-08-03 16:03:51,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481313879] [2023-08-03 16:03:51,564 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:03:51,565 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-03 16:03:51,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:51,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-03 16:03:51,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=59, Unknown=4, NotChecked=16, Total=110 [2023-08-03 16:03:51,614 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 378 [2023-08-03 16:03:51,616 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 57 transitions, 180 flow. Second operand has 11 states, 11 states have (on average 136.1818181818182) internal successors, (1498), 11 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:51,616 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:51,616 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 378 [2023-08-03 16:03:51,616 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:03:52,434 INFO L124 PetriNetUnfolderBase]: 5304/7655 cut-off events. [2023-08-03 16:03:52,434 INFO L125 PetriNetUnfolderBase]: For 2531/2531 co-relation queries the response was YES. [2023-08-03 16:03:52,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17282 conditions, 7655 events. 5304/7655 cut-off events. For 2531/2531 co-relation queries the response was YES. Maximal size of possible extension queue 291. Compared 39749 event pairs, 1205 based on Foata normal form. 446/6855 useless extension candidates. Maximal degree in co-relation 15246. Up to 5158 conditions per place. [2023-08-03 16:03:52,482 INFO L140 encePairwiseOnDemand]: 369/378 looper letters, 119 selfloop transitions, 18 changer transitions 0/141 dead transitions. [2023-08-03 16:03:52,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 141 transitions, 649 flow [2023-08-03 16:03:52,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 16:03:52,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 16:03:52,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 938 transitions. [2023-08-03 16:03:52,485 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41358024691358025 [2023-08-03 16:03:52,485 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 938 transitions. [2023-08-03 16:03:52,486 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 938 transitions. [2023-08-03 16:03:52,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:03:52,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 938 transitions. [2023-08-03 16:03:52,488 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 156.33333333333334) internal successors, (938), 6 states have internal predecessors, (938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:52,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:52,493 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 378.0) internal successors, (2646), 7 states have internal predecessors, (2646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:52,493 INFO L175 Difference]: Start difference. First operand has 48 places, 57 transitions, 180 flow. Second operand 6 states and 938 transitions. [2023-08-03 16:03:52,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 141 transitions, 649 flow [2023-08-03 16:03:52,514 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 141 transitions, 649 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:03:52,516 INFO L231 Difference]: Finished difference. Result has 57 places, 65 transitions, 303 flow [2023-08-03 16:03:52,516 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=303, PETRI_PLACES=57, PETRI_TRANSITIONS=65} [2023-08-03 16:03:52,517 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 14 predicate places. [2023-08-03 16:03:52,517 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 65 transitions, 303 flow [2023-08-03 16:03:52,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 136.1818181818182) internal successors, (1498), 11 states have internal predecessors, (1498), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:52,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:52,518 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 16:03:52,527 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 16:03:52,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:52,724 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:03:52,724 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:52,724 INFO L85 PathProgramCache]: Analyzing trace with hash -1132758178, now seen corresponding path program 1 times [2023-08-03 16:03:52,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:52,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16697143] [2023-08-03 16:03:52,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:52,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:52,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:52,768 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:03:52,768 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:52,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16697143] [2023-08-03 16:03:52,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16697143] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:03:52,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [242964372] [2023-08-03 16:03:52,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:52,769 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:52,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:03:52,771 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:03:52,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 16:03:52,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:52,849 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 16:03:52,850 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:03:52,869 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:03:52,869 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:03:52,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [242964372] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:03:52,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:03:52,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 16:03:52,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070985918] [2023-08-03 16:03:52,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:03:52,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:03:52,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:52,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:03:52,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:03:52,882 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 378 [2023-08-03 16:03:52,883 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 65 transitions, 303 flow. Second operand has 5 states, 5 states have (on average 170.6) internal successors, (853), 5 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:52,883 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:52,883 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 378 [2023-08-03 16:03:52,883 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:03:53,464 INFO L124 PetriNetUnfolderBase]: 4824/6944 cut-off events. [2023-08-03 16:03:53,464 INFO L125 PetriNetUnfolderBase]: For 6561/6561 co-relation queries the response was YES. [2023-08-03 16:03:53,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17489 conditions, 6944 events. 4824/6944 cut-off events. For 6561/6561 co-relation queries the response was YES. Maximal size of possible extension queue 270. Compared 36080 event pairs, 1020 based on Foata normal form. 209/6004 useless extension candidates. Maximal degree in co-relation 8490. Up to 6439 conditions per place. [2023-08-03 16:03:53,504 INFO L140 encePairwiseOnDemand]: 374/378 looper letters, 94 selfloop transitions, 4 changer transitions 1/102 dead transitions. [2023-08-03 16:03:53,505 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 102 transitions, 643 flow [2023-08-03 16:03:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:03:53,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:03:53,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 919 transitions. [2023-08-03 16:03:53,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48624338624338626 [2023-08-03 16:03:53,507 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 919 transitions. [2023-08-03 16:03:53,508 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 919 transitions. [2023-08-03 16:03:53,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:03:53,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 919 transitions. [2023-08-03 16:03:53,510 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 183.8) internal successors, (919), 5 states have internal predecessors, (919), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:53,513 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 378.0) internal successors, (2268), 6 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:53,514 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 378.0) internal successors, (2268), 6 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:53,514 INFO L175 Difference]: Start difference. First operand has 57 places, 65 transitions, 303 flow. Second operand 5 states and 919 transitions. [2023-08-03 16:03:53,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 102 transitions, 643 flow [2023-08-03 16:03:53,525 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 102 transitions, 642 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:03:53,527 INFO L231 Difference]: Finished difference. Result has 62 places, 65 transitions, 317 flow [2023-08-03 16:03:53,527 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=317, PETRI_PLACES=62, PETRI_TRANSITIONS=65} [2023-08-03 16:03:53,528 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 19 predicate places. [2023-08-03 16:03:53,528 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 65 transitions, 317 flow [2023-08-03 16:03:53,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.6) internal successors, (853), 5 states have internal predecessors, (853), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:53,529 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:53,529 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:03:53,536 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 16:03:53,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 16:03:53,734 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:03:53,735 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:53,735 INFO L85 PathProgramCache]: Analyzing trace with hash -1131191570, now seen corresponding path program 1 times [2023-08-03 16:03:53,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:53,735 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656313592] [2023-08-03 16:03:53,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:53,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:53,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:53,883 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:03:53,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:53,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656313592] [2023-08-03 16:03:53,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656313592] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:03:53,885 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [650438179] [2023-08-03 16:03:53,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:53,885 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:53,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:03:53,887 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:03:53,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 16:03:53,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:53,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 38 conjunts are in the unsatisfiable core [2023-08-03 16:03:53,965 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:03:53,982 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 [2023-08-03 16:03:53,993 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-03 16:03:53,996 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-03 16:03:54,018 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 [2023-08-03 16:03:54,053 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 [2023-08-03 16:03:54,096 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:03:54,096 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:03:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:03:54,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [650438179] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:03:54,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:03:54,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2023-08-03 16:03:54,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512458331] [2023-08-03 16:03:54,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:03:54,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-08-03 16:03:54,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:54,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-08-03 16:03:54,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=44, Unknown=5, NotChecked=0, Total=72 [2023-08-03 16:03:54,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 378 [2023-08-03 16:03:54,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 65 transitions, 317 flow. Second operand has 9 states, 9 states have (on average 136.55555555555554) internal successors, (1229), 9 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:54,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:54,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 378 [2023-08-03 16:03:54,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:03:55,118 INFO L124 PetriNetUnfolderBase]: 3761/5410 cut-off events. [2023-08-03 16:03:55,118 INFO L125 PetriNetUnfolderBase]: For 5169/5169 co-relation queries the response was YES. [2023-08-03 16:03:55,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13725 conditions, 5410 events. 3761/5410 cut-off events. For 5169/5169 co-relation queries the response was YES. Maximal size of possible extension queue 222. Compared 25108 event pairs, 1733 based on Foata normal form. 0/4580 useless extension candidates. Maximal degree in co-relation 7566. Up to 4247 conditions per place. [2023-08-03 16:03:55,147 INFO L140 encePairwiseOnDemand]: 370/378 looper letters, 86 selfloop transitions, 12 changer transitions 17/118 dead transitions. [2023-08-03 16:03:55,147 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 118 transitions, 718 flow [2023-08-03 16:03:55,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 16:03:55,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 16:03:55,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1041 transitions. [2023-08-03 16:03:55,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3934240362811791 [2023-08-03 16:03:55,151 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1041 transitions. [2023-08-03 16:03:55,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1041 transitions. [2023-08-03 16:03:55,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:03:55,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1041 transitions. [2023-08-03 16:03:55,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 148.71428571428572) internal successors, (1041), 7 states have internal predecessors, (1041), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:55,157 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 378.0) internal successors, (3024), 8 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:55,157 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 378.0) internal successors, (3024), 8 states have internal predecessors, (3024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:55,157 INFO L175 Difference]: Start difference. First operand has 62 places, 65 transitions, 317 flow. Second operand 7 states and 1041 transitions. [2023-08-03 16:03:55,158 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 118 transitions, 718 flow [2023-08-03 16:03:55,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 118 transitions, 715 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 16:03:55,166 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 339 flow [2023-08-03 16:03:55,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=339, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2023-08-03 16:03:55,167 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 30 predicate places. [2023-08-03 16:03:55,167 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 339 flow [2023-08-03 16:03:55,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 136.55555555555554) internal successors, (1229), 9 states have internal predecessors, (1229), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:55,167 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:55,167 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:03:55,175 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 16:03:55,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:55,373 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:03:55,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:55,373 INFO L85 PathProgramCache]: Analyzing trace with hash 1378215531, now seen corresponding path program 1 times [2023-08-03 16:03:55,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:55,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072211121] [2023-08-03 16:03:55,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:55,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:55,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:55,408 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:03:55,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:55,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072211121] [2023-08-03 16:03:55,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072211121] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:03:55,409 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [769024235] [2023-08-03 16:03:55,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:55,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:55,409 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:03:55,411 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:03:55,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 16:03:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:55,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 168 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:03:55,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:03:55,503 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:03:55,503 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:03:55,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:03:55,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [769024235] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:03:55,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:03:55,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:03:55,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484059847] [2023-08-03 16:03:55,520 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:03:55,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:03:55,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:55,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:03:55,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:03:55,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 378 [2023-08-03 16:03:55,536 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 339 flow. Second operand has 5 states, 5 states have (on average 172.2) internal successors, (861), 5 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:55,536 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:55,536 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 378 [2023-08-03 16:03:55,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:03:55,978 INFO L124 PetriNetUnfolderBase]: 3569/5069 cut-off events. [2023-08-03 16:03:55,979 INFO L125 PetriNetUnfolderBase]: For 7269/7269 co-relation queries the response was YES. [2023-08-03 16:03:55,989 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14527 conditions, 5069 events. 3569/5069 cut-off events. For 7269/7269 co-relation queries the response was YES. Maximal size of possible extension queue 218. Compared 23433 event pairs, 1947 based on Foata normal form. 3/4468 useless extension candidates. Maximal degree in co-relation 13724. Up to 5005 conditions per place. [2023-08-03 16:03:56,008 INFO L140 encePairwiseOnDemand]: 375/378 looper letters, 64 selfloop transitions, 3 changer transitions 0/70 dead transitions. [2023-08-03 16:03:56,008 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 70 transitions, 513 flow [2023-08-03 16:03:56,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:03:56,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:03:56,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 728 transitions. [2023-08-03 16:03:56,010 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2023-08-03 16:03:56,011 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 728 transitions. [2023-08-03 16:03:56,011 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 728 transitions. [2023-08-03 16:03:56,011 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:03:56,011 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 728 transitions. [2023-08-03 16:03:56,013 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:56,015 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 378.0) internal successors, (1890), 5 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:56,015 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 378.0) internal successors, (1890), 5 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:56,015 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 339 flow. Second operand 4 states and 728 transitions. [2023-08-03 16:03:56,016 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 70 transitions, 513 flow [2023-08-03 16:03:56,035 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 70 transitions, 499 flow, removed 7 selfloop flow, removed 4 redundant places. [2023-08-03 16:03:56,036 INFO L231 Difference]: Finished difference. Result has 67 places, 60 transitions, 325 flow [2023-08-03 16:03:56,037 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=319, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=325, PETRI_PLACES=67, PETRI_TRANSITIONS=60} [2023-08-03 16:03:56,037 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 24 predicate places. [2023-08-03 16:03:56,037 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 60 transitions, 325 flow [2023-08-03 16:03:56,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 172.2) internal successors, (861), 5 states have internal predecessors, (861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:56,038 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:56,038 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:03:56,045 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 16:03:56,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:56,243 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:03:56,244 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:56,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1284849588, now seen corresponding path program 1 times [2023-08-03 16:03:56,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:56,244 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526617359] [2023-08-03 16:03:56,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:56,244 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:56,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:03:56,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:56,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526617359] [2023-08-03 16:03:56,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526617359] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:03:56,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [54676649] [2023-08-03 16:03:56,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:56,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:56,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:03:56,700 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:03:56,702 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 16:03:56,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:56,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 24 conjunts are in the unsatisfiable core [2023-08-03 16:03:56,784 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:03:56,800 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 13 treesize of output 9 [2023-08-03 16:03:56,842 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 16:03:56,842 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:03:56,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [54676649] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:03:56,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:03:56,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 7 [2023-08-03 16:03:56,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924968571] [2023-08-03 16:03:56,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:03:56,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 16:03:56,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:56,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 16:03:56,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-08-03 16:03:56,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 378 [2023-08-03 16:03:56,888 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 60 transitions, 325 flow. Second operand has 4 states, 4 states have (on average 170.5) internal successors, (682), 4 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:56,888 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:56,888 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 378 [2023-08-03 16:03:56,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:03:56,971 INFO L124 PetriNetUnfolderBase]: 115/285 cut-off events. [2023-08-03 16:03:56,971 INFO L125 PetriNetUnfolderBase]: For 548/548 co-relation queries the response was YES. [2023-08-03 16:03:56,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 851 conditions, 285 events. 115/285 cut-off events. For 548/548 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1003 event pairs, 9 based on Foata normal form. 216/480 useless extension candidates. Maximal degree in co-relation 694. Up to 240 conditions per place. [2023-08-03 16:03:56,972 INFO L140 encePairwiseOnDemand]: 368/378 looper letters, 31 selfloop transitions, 10 changer transitions 11/55 dead transitions. [2023-08-03 16:03:56,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 55 transitions, 352 flow [2023-08-03 16:03:56,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:03:56,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:03:56,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 716 transitions. [2023-08-03 16:03:56,975 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47354497354497355 [2023-08-03 16:03:56,975 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 716 transitions. [2023-08-03 16:03:56,975 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 716 transitions. [2023-08-03 16:03:56,976 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:03:56,976 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 716 transitions. [2023-08-03 16:03:56,977 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:56,979 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 378.0) internal successors, (1890), 5 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:56,979 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 378.0) internal successors, (1890), 5 states have internal predecessors, (1890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:56,980 INFO L175 Difference]: Start difference. First operand has 67 places, 60 transitions, 325 flow. Second operand 4 states and 716 transitions. [2023-08-03 16:03:56,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 55 transitions, 352 flow [2023-08-03 16:03:56,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 55 transitions, 330 flow, removed 4 selfloop flow, removed 4 redundant places. [2023-08-03 16:03:56,982 INFO L231 Difference]: Finished difference. Result has 66 places, 43 transitions, 179 flow [2023-08-03 16:03:56,982 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=198, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=179, PETRI_PLACES=66, PETRI_TRANSITIONS=43} [2023-08-03 16:03:56,983 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 23 predicate places. [2023-08-03 16:03:56,983 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 43 transitions, 179 flow [2023-08-03 16:03:56,984 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 170.5) internal successors, (682), 4 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:56,984 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:56,984 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:03:56,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 16:03:57,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:57,189 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:03:57,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:57,190 INFO L85 PathProgramCache]: Analyzing trace with hash 115718030, now seen corresponding path program 1 times [2023-08-03 16:03:57,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:57,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594880088] [2023-08-03 16:03:57,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:57,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:57,559 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:03:57,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:57,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594880088] [2023-08-03 16:03:57,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594880088] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:03:57,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553854030] [2023-08-03 16:03:57,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:57,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:57,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:03:57,561 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:03:57,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 16:03:57,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:57,646 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-03 16:03:57,649 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:03:57,663 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 [2023-08-03 16:03:57,672 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-03 16:03:57,672 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-03 16:03:57,694 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 [2023-08-03 16:03:57,723 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 [2023-08-03 16:03:57,838 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 28 treesize of output 16 [2023-08-03 16:03:57,886 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:03:57,887 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:03:58,015 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_202 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_202) |c_~#pqb~0.base|) |c_~#pqb~0.offset|) 1))) is different from false [2023-08-03 16:03:58,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2023-08-03 16:03:58,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553854030] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:03:58,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:03:58,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 20 [2023-08-03 16:03:58,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4628708] [2023-08-03 16:03:58,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:03:58,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-03 16:03:58,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:58,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-03 16:03:58,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=310, Unknown=1, NotChecked=36, Total=420 [2023-08-03 16:03:58,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 378 [2023-08-03 16:03:58,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 43 transitions, 179 flow. Second operand has 21 states, 21 states have (on average 130.1904761904762) internal successors, (2734), 21 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:58,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:58,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 378 [2023-08-03 16:03:58,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:03:58,919 INFO L124 PetriNetUnfolderBase]: 122/343 cut-off events. [2023-08-03 16:03:58,919 INFO L125 PetriNetUnfolderBase]: For 203/203 co-relation queries the response was YES. [2023-08-03 16:03:58,920 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1008 conditions, 343 events. 122/343 cut-off events. For 203/203 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1629 event pairs, 0 based on Foata normal form. 8/318 useless extension candidates. Maximal degree in co-relation 962. Up to 137 conditions per place. [2023-08-03 16:03:58,921 INFO L140 encePairwiseOnDemand]: 364/378 looper letters, 101 selfloop transitions, 29 changer transitions 0/133 dead transitions. [2023-08-03 16:03:58,921 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 133 transitions, 755 flow [2023-08-03 16:03:58,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-03 16:03:58,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-03 16:03:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2573 transitions. [2023-08-03 16:03:58,927 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3582567529935951 [2023-08-03 16:03:58,927 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2573 transitions. [2023-08-03 16:03:58,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2573 transitions. [2023-08-03 16:03:58,929 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:03:58,929 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2573 transitions. [2023-08-03 16:03:58,933 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 135.42105263157896) internal successors, (2573), 19 states have internal predecessors, (2573), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:58,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 378.0) internal successors, (7560), 20 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:58,943 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 378.0) internal successors, (7560), 20 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:58,943 INFO L175 Difference]: Start difference. First operand has 66 places, 43 transitions, 179 flow. Second operand 19 states and 2573 transitions. [2023-08-03 16:03:58,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 133 transitions, 755 flow [2023-08-03 16:03:58,945 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 133 transitions, 640 flow, removed 39 selfloop flow, removed 12 redundant places. [2023-08-03 16:03:58,947 INFO L231 Difference]: Finished difference. Result has 74 places, 67 transitions, 349 flow [2023-08-03 16:03:58,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=349, PETRI_PLACES=74, PETRI_TRANSITIONS=67} [2023-08-03 16:03:58,947 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 31 predicate places. [2023-08-03 16:03:58,947 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 67 transitions, 349 flow [2023-08-03 16:03:58,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 130.1904761904762) internal successors, (2734), 21 states have internal predecessors, (2734), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:58,949 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:03:58,949 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:03:58,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 16:03:59,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:59,154 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:03:59,154 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:03:59,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1552311516, now seen corresponding path program 1 times [2023-08-03 16:03:59,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:03:59,154 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605090304] [2023-08-03 16:03:59,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:59,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:03:59,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:59,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:03:59,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:03:59,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605090304] [2023-08-03 16:03:59,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1605090304] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:03:59,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [305391211] [2023-08-03 16:03:59,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:03:59,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:03:59,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:03:59,426 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:03:59,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 16:03:59,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:03:59,514 INFO L262 TraceCheckSpWp]: Trace formula consists of 194 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-03 16:03:59,516 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:03:59,530 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 [2023-08-03 16:03:59,545 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-03 16:03:59,545 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-03 16:03:59,573 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 [2023-08-03 16:03:59,609 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 [2023-08-03 16:03:59,719 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 28 treesize of output 16 [2023-08-03 16:03:59,760 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:03:59,761 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:03:59,865 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_244 (Array Int Int))) (< 0 (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_244) |c_~#pqb~0.base|) |c_~#pqb~0.offset|) 1))) is different from false [2023-08-03 16:03:59,880 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2023-08-03 16:03:59,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [305391211] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:03:59,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:03:59,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 7] total 18 [2023-08-03 16:03:59,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496445093] [2023-08-03 16:03:59,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:03:59,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-08-03 16:03:59,883 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:03:59,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-08-03 16:03:59,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=245, Unknown=1, NotChecked=32, Total=342 [2023-08-03 16:03:59,988 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 378 [2023-08-03 16:03:59,990 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 67 transitions, 349 flow. Second operand has 19 states, 19 states have (on average 130.31578947368422) internal successors, (2476), 19 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:03:59,990 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:03:59,990 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 378 [2023-08-03 16:03:59,990 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:00,536 INFO L124 PetriNetUnfolderBase]: 85/254 cut-off events. [2023-08-03 16:04:00,537 INFO L125 PetriNetUnfolderBase]: For 305/305 co-relation queries the response was YES. [2023-08-03 16:04:00,537 INFO L83 FinitePrefix]: Finished finitePrefix Result has 842 conditions, 254 events. 85/254 cut-off events. For 305/305 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1016 event pairs, 0 based on Foata normal form. 0/234 useless extension candidates. Maximal degree in co-relation 798. Up to 123 conditions per place. [2023-08-03 16:04:00,538 INFO L140 encePairwiseOnDemand]: 366/378 looper letters, 63 selfloop transitions, 28 changer transitions 0/94 dead transitions. [2023-08-03 16:04:00,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 94 transitions, 613 flow [2023-08-03 16:04:00,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-03 16:04:00,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-03 16:04:00,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1746 transitions. [2023-08-03 16:04:00,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3553113553113553 [2023-08-03 16:04:00,543 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1746 transitions. [2023-08-03 16:04:00,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1746 transitions. [2023-08-03 16:04:00,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:00,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1746 transitions. [2023-08-03 16:04:00,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 134.30769230769232) internal successors, (1746), 13 states have internal predecessors, (1746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:00,553 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 378.0) internal successors, (5292), 14 states have internal predecessors, (5292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:00,554 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 378.0) internal successors, (5292), 14 states have internal predecessors, (5292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:00,554 INFO L175 Difference]: Start difference. First operand has 74 places, 67 transitions, 349 flow. Second operand 13 states and 1746 transitions. [2023-08-03 16:04:00,554 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 94 transitions, 613 flow [2023-08-03 16:04:00,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 94 transitions, 553 flow, removed 27 selfloop flow, removed 3 redundant places. [2023-08-03 16:04:00,557 INFO L231 Difference]: Finished difference. Result has 85 places, 70 transitions, 396 flow [2023-08-03 16:04:00,557 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=396, PETRI_PLACES=85, PETRI_TRANSITIONS=70} [2023-08-03 16:04:00,558 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2023-08-03 16:04:00,558 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 70 transitions, 396 flow [2023-08-03 16:04:00,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 130.31578947368422) internal successors, (2476), 19 states have internal predecessors, (2476), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:00,559 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:00,559 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:00,567 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-08-03 16:04:00,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:00,764 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:00,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:00,764 INFO L85 PathProgramCache]: Analyzing trace with hash -479992748, now seen corresponding path program 1 times [2023-08-03 16:04:00,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:00,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685158150] [2023-08-03 16:04:00,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:00,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:00,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:00,816 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:04:00,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:00,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685158150] [2023-08-03 16:04:00,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685158150] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:00,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:00,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:04:00,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123074866] [2023-08-03 16:04:00,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:00,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 16:04:00,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:00,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 16:04:00,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 16:04:00,869 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 378 [2023-08-03 16:04:00,870 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 70 transitions, 396 flow. Second operand has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:00,870 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:00,870 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 378 [2023-08-03 16:04:00,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:00,983 INFO L124 PetriNetUnfolderBase]: 86/253 cut-off events. [2023-08-03 16:04:00,983 INFO L125 PetriNetUnfolderBase]: For 317/317 co-relation queries the response was YES. [2023-08-03 16:04:00,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 845 conditions, 253 events. 86/253 cut-off events. For 317/317 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 969 event pairs, 5 based on Foata normal form. 0/245 useless extension candidates. Maximal degree in co-relation 799. Up to 116 conditions per place. [2023-08-03 16:04:00,984 INFO L140 encePairwiseOnDemand]: 373/378 looper letters, 84 selfloop transitions, 11 changer transitions 0/98 dead transitions. [2023-08-03 16:04:00,984 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 98 transitions, 719 flow [2023-08-03 16:04:00,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:04:00,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:04:00,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 884 transitions. [2023-08-03 16:04:00,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4677248677248677 [2023-08-03 16:04:00,987 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 884 transitions. [2023-08-03 16:04:00,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 884 transitions. [2023-08-03 16:04:00,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:00,987 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 884 transitions. [2023-08-03 16:04:00,989 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.8) internal successors, (884), 5 states have internal predecessors, (884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:00,992 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 378.0) internal successors, (2268), 6 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:00,992 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 378.0) internal successors, (2268), 6 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:00,992 INFO L175 Difference]: Start difference. First operand has 85 places, 70 transitions, 396 flow. Second operand 5 states and 884 transitions. [2023-08-03 16:04:00,992 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 98 transitions, 719 flow [2023-08-03 16:04:00,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 98 transitions, 694 flow, removed 4 selfloop flow, removed 7 redundant places. [2023-08-03 16:04:00,996 INFO L231 Difference]: Finished difference. Result has 82 places, 72 transitions, 409 flow [2023-08-03 16:04:00,996 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=371, PETRI_DIFFERENCE_MINUEND_PLACES=77, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=409, PETRI_PLACES=82, PETRI_TRANSITIONS=72} [2023-08-03 16:04:00,996 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 39 predicate places. [2023-08-03 16:04:00,996 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 72 transitions, 409 flow [2023-08-03 16:04:00,997 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:00,997 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:00,997 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:00,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 16:04:00,997 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:00,997 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:00,997 INFO L85 PathProgramCache]: Analyzing trace with hash -877018077, now seen corresponding path program 1 times [2023-08-03 16:04:00,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:00,998 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [958320045] [2023-08-03 16:04:00,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:00,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:01,045 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:04:01,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:01,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [958320045] [2023-08-03 16:04:01,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [958320045] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:01,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:01,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:04:01,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500888075] [2023-08-03 16:04:01,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:01,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 16:04:01,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:01,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 16:04:01,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 16:04:01,099 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 165 out of 378 [2023-08-03 16:04:01,101 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 72 transitions, 409 flow. Second operand has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:01,101 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:01,101 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 165 of 378 [2023-08-03 16:04:01,101 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:01,211 INFO L124 PetriNetUnfolderBase]: 87/252 cut-off events. [2023-08-03 16:04:01,212 INFO L125 PetriNetUnfolderBase]: For 334/334 co-relation queries the response was YES. [2023-08-03 16:04:01,212 INFO L83 FinitePrefix]: Finished finitePrefix Result has 867 conditions, 252 events. 87/252 cut-off events. For 334/334 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 940 event pairs, 8 based on Foata normal form. 0/252 useless extension candidates. Maximal degree in co-relation 821. Up to 107 conditions per place. [2023-08-03 16:04:01,213 INFO L140 encePairwiseOnDemand]: 373/378 looper letters, 87 selfloop transitions, 11 changer transitions 0/101 dead transitions. [2023-08-03 16:04:01,213 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 101 transitions, 752 flow [2023-08-03 16:04:01,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:04:01,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:04:01,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 882 transitions. [2023-08-03 16:04:01,215 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4666666666666667 [2023-08-03 16:04:01,216 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 882 transitions. [2023-08-03 16:04:01,216 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 882 transitions. [2023-08-03 16:04:01,216 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:01,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 882 transitions. [2023-08-03 16:04:01,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 176.4) internal successors, (882), 5 states have internal predecessors, (882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:01,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 378.0) internal successors, (2268), 6 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:01,221 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 378.0) internal successors, (2268), 6 states have internal predecessors, (2268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:01,221 INFO L175 Difference]: Start difference. First operand has 82 places, 72 transitions, 409 flow. Second operand 5 states and 882 transitions. [2023-08-03 16:04:01,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 101 transitions, 752 flow [2023-08-03 16:04:01,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 101 transitions, 742 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:04:01,225 INFO L231 Difference]: Finished difference. Result has 85 places, 74 transitions, 438 flow [2023-08-03 16:04:01,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=400, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=438, PETRI_PLACES=85, PETRI_TRANSITIONS=74} [2023-08-03 16:04:01,225 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 42 predicate places. [2023-08-03 16:04:01,225 INFO L495 AbstractCegarLoop]: Abstraction has has 85 places, 74 transitions, 438 flow [2023-08-03 16:04:01,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 168.75) internal successors, (675), 4 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:01,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:01,226 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:01,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 16:04:01,226 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:01,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:01,227 INFO L85 PathProgramCache]: Analyzing trace with hash -657810582, now seen corresponding path program 1 times [2023-08-03 16:04:01,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:01,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479849775] [2023-08-03 16:04:01,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:01,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:01,918 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:04:01,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:01,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479849775] [2023-08-03 16:04:01,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479849775] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:01,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [582291624] [2023-08-03 16:04:01,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:01,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:01,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:01,920 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:04:01,922 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 16:04:02,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:02,019 INFO L262 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 77 conjunts are in the unsatisfiable core [2023-08-03 16:04:02,024 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:02,037 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-03 16:04:02,038 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-03 16:04:02,042 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 [2023-08-03 16:04:02,062 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 [2023-08-03 16:04:02,093 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 [2023-08-03 16:04:02,188 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 19 treesize of output 11 [2023-08-03 16:04:02,323 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 19 treesize of output 11 [2023-08-03 16:04:02,353 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:04:02,353 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:04:02,534 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_334 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#tid~0#1.base| v_ArrVal_334) |c_~#pqb~0.base|) |c_~#pqb~0.offset|) 0)) is different from false [2023-08-03 16:04:02,553 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 5 not checked. [2023-08-03 16:04:02,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [582291624] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:04:02,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:04:02,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 30 [2023-08-03 16:04:02,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262548278] [2023-08-03 16:04:02,554 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:04:02,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2023-08-03 16:04:02,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:02,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2023-08-03 16:04:02,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=789, Unknown=1, NotChecked=58, Total=992 [2023-08-03 16:04:02,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 378 [2023-08-03 16:04:02,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 74 transitions, 438 flow. Second operand has 32 states, 32 states have (on average 124.15625) internal successors, (3973), 32 states have internal predecessors, (3973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:02,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:02,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 378 [2023-08-03 16:04:02,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:03,335 INFO L124 PetriNetUnfolderBase]: 115/335 cut-off events. [2023-08-03 16:04:03,335 INFO L125 PetriNetUnfolderBase]: For 457/457 co-relation queries the response was YES. [2023-08-03 16:04:03,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1169 conditions, 335 events. 115/335 cut-off events. For 457/457 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1420 event pairs, 17 based on Foata normal form. 8/343 useless extension candidates. Maximal degree in co-relation 1121. Up to 197 conditions per place. [2023-08-03 16:04:03,337 INFO L140 encePairwiseOnDemand]: 364/378 looper letters, 98 selfloop transitions, 24 changer transitions 2/127 dead transitions. [2023-08-03 16:04:03,337 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 127 transitions, 936 flow [2023-08-03 16:04:03,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-03 16:04:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-03 16:04:03,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1801 transitions. [2023-08-03 16:04:03,355 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34032501889644745 [2023-08-03 16:04:03,355 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1801 transitions. [2023-08-03 16:04:03,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1801 transitions. [2023-08-03 16:04:03,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:03,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1801 transitions. [2023-08-03 16:04:03,361 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 128.64285714285714) internal successors, (1801), 14 states have internal predecessors, (1801), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:03,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 378.0) internal successors, (5670), 15 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:03,368 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 378.0) internal successors, (5670), 15 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:03,368 INFO L175 Difference]: Start difference. First operand has 85 places, 74 transitions, 438 flow. Second operand 14 states and 1801 transitions. [2023-08-03 16:04:03,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 98 places, 127 transitions, 936 flow [2023-08-03 16:04:03,371 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 127 transitions, 924 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:04:03,373 INFO L231 Difference]: Finished difference. Result has 102 places, 84 transitions, 573 flow [2023-08-03 16:04:03,373 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=74, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=573, PETRI_PLACES=102, PETRI_TRANSITIONS=84} [2023-08-03 16:04:03,374 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 59 predicate places. [2023-08-03 16:04:03,374 INFO L495 AbstractCegarLoop]: Abstraction has has 102 places, 84 transitions, 573 flow [2023-08-03 16:04:03,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 124.15625) internal successors, (3973), 32 states have internal predecessors, (3973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:03,376 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:03,376 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:03,381 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 16:04:03,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-08-03 16:04:03,581 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:03,581 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:03,582 INFO L85 PathProgramCache]: Analyzing trace with hash -21466757, now seen corresponding path program 1 times [2023-08-03 16:04:03,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:03,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818901889] [2023-08-03 16:04:03,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:03,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:03,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:03,762 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:04:03,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:03,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818901889] [2023-08-03 16:04:03,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818901889] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:03,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2118501565] [2023-08-03 16:04:03,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:03,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:03,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:03,764 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:04:03,767 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 16:04:03,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:03,866 INFO L262 TraceCheckSpWp]: Trace formula consists of 237 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-03 16:04:03,869 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:03,880 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-03 16:04:03,880 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-03 16:04:03,884 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 [2023-08-03 16:04:03,901 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 [2023-08-03 16:04:03,924 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 [2023-08-03 16:04:04,013 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 19 treesize of output 11 [2023-08-03 16:04:04,136 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 19 treesize of output 11 [2023-08-03 16:04:04,165 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:04:04,166 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:04:04,339 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:04:04,340 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2118501565] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:04:04,340 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:04:04,340 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 25 [2023-08-03 16:04:04,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888399081] [2023-08-03 16:04:04,340 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:04:04,342 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-03 16:04:04,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:04,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-03 16:04:04,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=531, Unknown=3, NotChecked=0, Total=650 [2023-08-03 16:04:04,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 378 [2023-08-03 16:04:04,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 84 transitions, 573 flow. Second operand has 26 states, 26 states have (on average 125.53846153846153) internal successors, (3264), 26 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:04,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:04,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 378 [2023-08-03 16:04:04,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:05,910 INFO L124 PetriNetUnfolderBase]: 186/528 cut-off events. [2023-08-03 16:04:05,910 INFO L125 PetriNetUnfolderBase]: For 851/851 co-relation queries the response was YES. [2023-08-03 16:04:05,912 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1970 conditions, 528 events. 186/528 cut-off events. For 851/851 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 2704 event pairs, 19 based on Foata normal form. 13/541 useless extension candidates. Maximal degree in co-relation 1915. Up to 166 conditions per place. [2023-08-03 16:04:05,913 INFO L140 encePairwiseOnDemand]: 364/378 looper letters, 152 selfloop transitions, 46 changer transitions 4/205 dead transitions. [2023-08-03 16:04:05,913 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 205 transitions, 1648 flow [2023-08-03 16:04:05,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-03 16:04:05,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-03 16:04:05,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2982 transitions. [2023-08-03 16:04:05,924 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.34299516908212563 [2023-08-03 16:04:05,924 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2982 transitions. [2023-08-03 16:04:05,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2982 transitions. [2023-08-03 16:04:05,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:05,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2982 transitions. [2023-08-03 16:04:05,932 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 129.65217391304347) internal successors, (2982), 23 states have internal predecessors, (2982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:05,942 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 378.0) internal successors, (9072), 24 states have internal predecessors, (9072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:05,943 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 378.0) internal successors, (9072), 24 states have internal predecessors, (9072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:05,943 INFO L175 Difference]: Start difference. First operand has 102 places, 84 transitions, 573 flow. Second operand 23 states and 2982 transitions. [2023-08-03 16:04:05,943 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 205 transitions, 1648 flow [2023-08-03 16:04:05,949 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 205 transitions, 1630 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-03 16:04:05,951 INFO L231 Difference]: Finished difference. Result has 127 places, 111 transitions, 908 flow [2023-08-03 16:04:05,951 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=555, PETRI_DIFFERENCE_MINUEND_PLACES=97, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=908, PETRI_PLACES=127, PETRI_TRANSITIONS=111} [2023-08-03 16:04:05,952 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 84 predicate places. [2023-08-03 16:04:05,952 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 111 transitions, 908 flow [2023-08-03 16:04:05,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 125.53846153846153) internal successors, (3264), 26 states have internal predecessors, (3264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:05,953 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:05,954 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:05,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 16:04:06,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 16:04:06,159 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:06,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:06,160 INFO L85 PathProgramCache]: Analyzing trace with hash -811098397, now seen corresponding path program 1 times [2023-08-03 16:04:06,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:06,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108457876] [2023-08-03 16:04:06,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:06,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:06,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:06,601 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:04:06,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:06,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108457876] [2023-08-03 16:04:06,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108457876] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:06,602 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:06,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-08-03 16:04:06,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [908528135] [2023-08-03 16:04:06,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:06,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-03 16:04:06,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:06,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-03 16:04:06,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-08-03 16:04:06,917 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 161 out of 378 [2023-08-03 16:04:06,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 111 transitions, 908 flow. Second operand has 10 states, 10 states have (on average 163.1) internal successors, (1631), 10 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:06,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:06,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 161 of 378 [2023-08-03 16:04:06,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:07,130 INFO L124 PetriNetUnfolderBase]: 180/514 cut-off events. [2023-08-03 16:04:07,130 INFO L125 PetriNetUnfolderBase]: For 1362/1362 co-relation queries the response was YES. [2023-08-03 16:04:07,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2200 conditions, 514 events. 180/514 cut-off events. For 1362/1362 co-relation queries the response was YES. Maximal size of possible extension queue 39. Compared 2589 event pairs, 18 based on Foata normal form. 6/520 useless extension candidates. Maximal degree in co-relation 2136. Up to 174 conditions per place. [2023-08-03 16:04:07,133 INFO L140 encePairwiseOnDemand]: 367/378 looper letters, 118 selfloop transitions, 30 changer transitions 3/154 dead transitions. [2023-08-03 16:04:07,133 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 154 transitions, 1484 flow [2023-08-03 16:04:07,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-03 16:04:07,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-03 16:04:07,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1683 transitions. [2023-08-03 16:04:07,135 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4452380952380952 [2023-08-03 16:04:07,136 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1683 transitions. [2023-08-03 16:04:07,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1683 transitions. [2023-08-03 16:04:07,136 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:07,136 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1683 transitions. [2023-08-03 16:04:07,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 168.3) internal successors, (1683), 10 states have internal predecessors, (1683), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:07,142 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 378.0) internal successors, (4158), 11 states have internal predecessors, (4158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:07,143 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 378.0) internal successors, (4158), 11 states have internal predecessors, (4158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:07,143 INFO L175 Difference]: Start difference. First operand has 127 places, 111 transitions, 908 flow. Second operand 10 states and 1683 transitions. [2023-08-03 16:04:07,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 154 transitions, 1484 flow [2023-08-03 16:04:07,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 154 transitions, 1430 flow, removed 17 selfloop flow, removed 5 redundant places. [2023-08-03 16:04:07,154 INFO L231 Difference]: Finished difference. Result has 134 places, 113 transitions, 951 flow [2023-08-03 16:04:07,154 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=854, PETRI_DIFFERENCE_MINUEND_PLACES=121, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=951, PETRI_PLACES=134, PETRI_TRANSITIONS=113} [2023-08-03 16:04:07,155 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 91 predicate places. [2023-08-03 16:04:07,155 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 113 transitions, 951 flow [2023-08-03 16:04:07,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 163.1) internal successors, (1631), 10 states have internal predecessors, (1631), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:07,156 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:07,156 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:07,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-03 16:04:07,156 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:07,156 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:07,156 INFO L85 PathProgramCache]: Analyzing trace with hash -213444694, now seen corresponding path program 1 times [2023-08-03 16:04:07,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:07,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884946997] [2023-08-03 16:04:07,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:07,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:07,712 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:04:07,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:07,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884946997] [2023-08-03 16:04:07,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884946997] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:07,713 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309612579] [2023-08-03 16:04:07,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:07,713 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:07,713 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:07,714 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:04:07,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 16:04:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:07,838 INFO L262 TraceCheckSpWp]: Trace formula consists of 243 conjuncts, 79 conjunts are in the unsatisfiable core [2023-08-03 16:04:07,845 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:07,855 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 [2023-08-03 16:04:07,861 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-03 16:04:07,861 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-08-03 16:04:07,883 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 [2023-08-03 16:04:07,910 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 [2023-08-03 16:04:08,025 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 19 treesize of output 11 [2023-08-03 16:04:08,194 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 19 treesize of output 11 [2023-08-03 16:04:08,234 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:04:08,234 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:04:08,450 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:04:08,451 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309612579] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:04:08,451 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:04:08,451 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 28 [2023-08-03 16:04:08,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209228476] [2023-08-03 16:04:08,451 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:04:08,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-03 16:04:08,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:08,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-03 16:04:08,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=737, Unknown=5, NotChecked=0, Total=870 [2023-08-03 16:04:10,897 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 378 [2023-08-03 16:04:10,899 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 113 transitions, 951 flow. Second operand has 30 states, 30 states have (on average 119.16666666666667) internal successors, (3575), 30 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:10,899 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:10,899 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 378 [2023-08-03 16:04:10,899 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:11,818 INFO L124 PetriNetUnfolderBase]: 169/485 cut-off events. [2023-08-03 16:04:11,818 INFO L125 PetriNetUnfolderBase]: For 1512/1512 co-relation queries the response was YES. [2023-08-03 16:04:11,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2153 conditions, 485 events. 169/485 cut-off events. For 1512/1512 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2350 event pairs, 22 based on Foata normal form. 6/491 useless extension candidates. Maximal degree in co-relation 2087. Up to 290 conditions per place. [2023-08-03 16:04:11,820 INFO L140 encePairwiseOnDemand]: 363/378 looper letters, 97 selfloop transitions, 34 changer transitions 16/150 dead transitions. [2023-08-03 16:04:11,820 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 150 transitions, 1463 flow [2023-08-03 16:04:11,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-03 16:04:11,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-03 16:04:11,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 2312 transitions. [2023-08-03 16:04:11,823 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32191590086326927 [2023-08-03 16:04:11,823 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 2312 transitions. [2023-08-03 16:04:11,823 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 2312 transitions. [2023-08-03 16:04:11,824 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:11,824 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 2312 transitions. [2023-08-03 16:04:11,827 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 121.6842105263158) internal successors, (2312), 19 states have internal predecessors, (2312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:11,833 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 378.0) internal successors, (7560), 20 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:11,834 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 378.0) internal successors, (7560), 20 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:11,834 INFO L175 Difference]: Start difference. First operand has 134 places, 113 transitions, 951 flow. Second operand 19 states and 2312 transitions. [2023-08-03 16:04:11,834 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 151 places, 150 transitions, 1463 flow [2023-08-03 16:04:11,842 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 150 transitions, 1431 flow, removed 3 selfloop flow, removed 4 redundant places. [2023-08-03 16:04:11,845 INFO L231 Difference]: Finished difference. Result has 153 places, 111 transitions, 1009 flow [2023-08-03 16:04:11,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=908, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1009, PETRI_PLACES=153, PETRI_TRANSITIONS=111} [2023-08-03 16:04:11,845 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 110 predicate places. [2023-08-03 16:04:11,845 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 111 transitions, 1009 flow [2023-08-03 16:04:11,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 119.16666666666667) internal successors, (3575), 30 states have internal predecessors, (3575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:11,846 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:11,846 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:11,852 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 16:04:12,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 16:04:12,051 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:12,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:12,052 INFO L85 PathProgramCache]: Analyzing trace with hash -915333759, now seen corresponding path program 2 times [2023-08-03 16:04:12,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:12,052 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209446638] [2023-08-03 16:04:12,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:12,052 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:12,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:12,837 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:04:12,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:12,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209446638] [2023-08-03 16:04:12,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209446638] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:12,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853270360] [2023-08-03 16:04:12,838 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 16:04:12,838 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:12,838 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:12,840 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:04:12,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 16:04:12,962 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 16:04:12,963 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 16:04:12,964 INFO L262 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 36 conjunts are in the unsatisfiable core [2023-08-03 16:04:12,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:13,160 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 28 treesize of output 16 [2023-08-03 16:04:13,247 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 16:04:13,247 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:04:13,427 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-08-03 16:04:13,430 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 55 [2023-08-03 16:04:13,474 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 16:04:13,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853270360] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:04:13,474 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:04:13,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 7, 7] total 30 [2023-08-03 16:04:13,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494091069] [2023-08-03 16:04:13,475 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:04:13,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-03 16:04:13,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:13,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-03 16:04:13,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=733, Unknown=0, NotChecked=0, Total=870 [2023-08-03 16:04:15,911 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 378 [2023-08-03 16:04:15,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 111 transitions, 1009 flow. Second operand has 30 states, 30 states have (on average 158.33333333333334) internal successors, (4750), 30 states have internal predecessors, (4750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:15,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:15,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 378 [2023-08-03 16:04:15,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:16,948 INFO L124 PetriNetUnfolderBase]: 214/609 cut-off events. [2023-08-03 16:04:16,948 INFO L125 PetriNetUnfolderBase]: For 2547/2547 co-relation queries the response was YES. [2023-08-03 16:04:16,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2816 conditions, 609 events. 214/609 cut-off events. For 2547/2547 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3178 event pairs, 51 based on Foata normal form. 7/616 useless extension candidates. Maximal degree in co-relation 2745. Up to 188 conditions per place. [2023-08-03 16:04:16,952 INFO L140 encePairwiseOnDemand]: 365/378 looper letters, 160 selfloop transitions, 46 changer transitions 2/211 dead transitions. [2023-08-03 16:04:16,952 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 211 transitions, 2204 flow [2023-08-03 16:04:16,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-08-03 16:04:16,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2023-08-03 16:04:16,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 3253 transitions. [2023-08-03 16:04:16,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4302910052910053 [2023-08-03 16:04:16,957 INFO L72 ComplementDD]: Start complementDD. Operand 20 states and 3253 transitions. [2023-08-03 16:04:16,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20 states and 3253 transitions. [2023-08-03 16:04:16,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:16,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 20 states and 3253 transitions. [2023-08-03 16:04:16,961 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 21 states, 20 states have (on average 162.65) internal successors, (3253), 20 states have internal predecessors, (3253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:16,967 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 21 states, 21 states have (on average 378.0) internal successors, (7938), 21 states have internal predecessors, (7938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:16,967 INFO L81 ComplementDD]: Finished complementDD. Result has 21 states, 21 states have (on average 378.0) internal successors, (7938), 21 states have internal predecessors, (7938), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:16,968 INFO L175 Difference]: Start difference. First operand has 153 places, 111 transitions, 1009 flow. Second operand 20 states and 3253 transitions. [2023-08-03 16:04:16,968 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 211 transitions, 2204 flow [2023-08-03 16:04:16,981 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 211 transitions, 2142 flow, removed 14 selfloop flow, removed 14 redundant places. [2023-08-03 16:04:16,984 INFO L231 Difference]: Finished difference. Result has 162 places, 131 transitions, 1323 flow [2023-08-03 16:04:16,984 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=965, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=20, PETRI_FLOW=1323, PETRI_PLACES=162, PETRI_TRANSITIONS=131} [2023-08-03 16:04:16,984 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 119 predicate places. [2023-08-03 16:04:16,984 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 131 transitions, 1323 flow [2023-08-03 16:04:16,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 158.33333333333334) internal successors, (4750), 30 states have internal predecessors, (4750), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:16,985 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:16,985 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:16,993 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 16:04:17,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-03 16:04:17,191 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:17,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:17,191 INFO L85 PathProgramCache]: Analyzing trace with hash 747774437, now seen corresponding path program 2 times [2023-08-03 16:04:17,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:17,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1205263089] [2023-08-03 16:04:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:17,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:17,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:17,747 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:04:17,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:17,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1205263089] [2023-08-03 16:04:17,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1205263089] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:17,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218483595] [2023-08-03 16:04:17,747 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 16:04:17,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:17,748 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:17,749 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:04:17,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-03 16:04:17,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-08-03 16:04:17,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 16:04:17,874 INFO L262 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-03 16:04:17,876 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:18,090 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 28 treesize of output 16 [2023-08-03 16:04:18,162 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 16:04:18,163 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:04:18,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218483595] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:18,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:04:18,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [14] total 22 [2023-08-03 16:04:18,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144337675] [2023-08-03 16:04:18,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:18,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-08-03 16:04:18,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:18,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-08-03 16:04:18,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=432, Unknown=0, NotChecked=0, Total=506 [2023-08-03 16:04:18,425 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 378 [2023-08-03 16:04:18,426 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 131 transitions, 1323 flow. Second operand has 10 states, 10 states have (on average 161.1) internal successors, (1611), 10 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:18,426 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:18,426 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 378 [2023-08-03 16:04:18,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:18,748 INFO L124 PetriNetUnfolderBase]: 207/592 cut-off events. [2023-08-03 16:04:18,748 INFO L125 PetriNetUnfolderBase]: For 2905/2905 co-relation queries the response was YES. [2023-08-03 16:04:18,750 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2909 conditions, 592 events. 207/592 cut-off events. For 2905/2905 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 3078 event pairs, 43 based on Foata normal form. 6/598 useless extension candidates. Maximal degree in co-relation 2833. Up to 186 conditions per place. [2023-08-03 16:04:18,751 INFO L140 encePairwiseOnDemand]: 365/378 looper letters, 106 selfloop transitions, 41 changer transitions 25/175 dead transitions. [2023-08-03 16:04:18,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 175 transitions, 2010 flow [2023-08-03 16:04:18,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-08-03 16:04:18,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-08-03 16:04:18,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1982 transitions. [2023-08-03 16:04:18,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43694885361552027 [2023-08-03 16:04:18,756 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1982 transitions. [2023-08-03 16:04:18,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1982 transitions. [2023-08-03 16:04:18,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:18,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1982 transitions. [2023-08-03 16:04:18,759 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 165.16666666666666) internal successors, (1982), 12 states have internal predecessors, (1982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:18,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 378.0) internal successors, (4914), 13 states have internal predecessors, (4914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:18,762 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 378.0) internal successors, (4914), 13 states have internal predecessors, (4914), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:18,762 INFO L175 Difference]: Start difference. First operand has 162 places, 131 transitions, 1323 flow. Second operand 12 states and 1982 transitions. [2023-08-03 16:04:18,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 175 transitions, 2010 flow [2023-08-03 16:04:18,779 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 175 transitions, 1972 flow, removed 2 selfloop flow, removed 10 redundant places. [2023-08-03 16:04:18,782 INFO L231 Difference]: Finished difference. Result has 165 places, 120 transitions, 1284 flow [2023-08-03 16:04:18,782 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=1285, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=37, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=1284, PETRI_PLACES=165, PETRI_TRANSITIONS=120} [2023-08-03 16:04:18,783 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 122 predicate places. [2023-08-03 16:04:18,783 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 120 transitions, 1284 flow [2023-08-03 16:04:18,783 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 161.1) internal successors, (1611), 10 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:18,783 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:18,783 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:18,789 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-03 16:04:18,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-03 16:04:18,989 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:18,989 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:18,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1794499966, now seen corresponding path program 2 times [2023-08-03 16:04:18,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:18,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [555811649] [2023-08-03 16:04:18,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:18,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:19,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:19,334 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:04:19,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:19,335 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [555811649] [2023-08-03 16:04:19,335 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [555811649] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:19,335 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:19,335 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-08-03 16:04:19,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185298302] [2023-08-03 16:04:19,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:19,335 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-08-03 16:04:19,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:19,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-08-03 16:04:19,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2023-08-03 16:04:19,769 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 378 [2023-08-03 16:04:19,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 120 transitions, 1284 flow. Second operand has 13 states, 13 states have (on average 159.0) internal successors, (2067), 13 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:19,770 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:19,770 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 378 [2023-08-03 16:04:19,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:20,265 INFO L124 PetriNetUnfolderBase]: 184/628 cut-off events. [2023-08-03 16:04:20,266 INFO L125 PetriNetUnfolderBase]: For 3822/3822 co-relation queries the response was YES. [2023-08-03 16:04:20,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3296 conditions, 628 events. 184/628 cut-off events. For 3822/3822 co-relation queries the response was YES. Maximal size of possible extension queue 40. Compared 3410 event pairs, 40 based on Foata normal form. 12/640 useless extension candidates. Maximal degree in co-relation 3218. Up to 229 conditions per place. [2023-08-03 16:04:20,269 INFO L140 encePairwiseOnDemand]: 363/378 looper letters, 131 selfloop transitions, 53 changer transitions 9/196 dead transitions. [2023-08-03 16:04:20,269 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 172 places, 196 transitions, 2357 flow [2023-08-03 16:04:20,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-03 16:04:20,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-03 16:04:20,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2302 transitions. [2023-08-03 16:04:20,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4349962207105064 [2023-08-03 16:04:20,272 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2302 transitions. [2023-08-03 16:04:20,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2302 transitions. [2023-08-03 16:04:20,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:20,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2302 transitions. [2023-08-03 16:04:20,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 164.42857142857142) internal successors, (2302), 14 states have internal predecessors, (2302), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:20,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 378.0) internal successors, (5670), 15 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:20,279 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 378.0) internal successors, (5670), 15 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:20,279 INFO L175 Difference]: Start difference. First operand has 165 places, 120 transitions, 1284 flow. Second operand 14 states and 2302 transitions. [2023-08-03 16:04:20,279 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 172 places, 196 transitions, 2357 flow [2023-08-03 16:04:20,300 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 196 transitions, 2259 flow, removed 11 selfloop flow, removed 9 redundant places. [2023-08-03 16:04:20,303 INFO L231 Difference]: Finished difference. Result has 170 places, 139 transitions, 1658 flow [2023-08-03 16:04:20,303 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=1217, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=74, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1658, PETRI_PLACES=170, PETRI_TRANSITIONS=139} [2023-08-03 16:04:20,303 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 127 predicate places. [2023-08-03 16:04:20,304 INFO L495 AbstractCegarLoop]: Abstraction has has 170 places, 139 transitions, 1658 flow [2023-08-03 16:04:20,304 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 159.0) internal successors, (2067), 13 states have internal predecessors, (2067), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:20,304 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:20,304 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:20,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-08-03 16:04:20,304 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:20,305 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:20,305 INFO L85 PathProgramCache]: Analyzing trace with hash -108321776, now seen corresponding path program 3 times [2023-08-03 16:04:20,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:20,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742459448] [2023-08-03 16:04:20,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:20,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:20,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:20,826 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:04:20,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:20,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742459448] [2023-08-03 16:04:20,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742459448] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:20,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272572910] [2023-08-03 16:04:20,827 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-03 16:04:20,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:20,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:20,829 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:04:20,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-03 16:04:20,970 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-03 16:04:20,970 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 16:04:20,972 INFO L262 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 54 conjunts are in the unsatisfiable core [2023-08-03 16:04:20,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:21,148 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 28 treesize of output 16 [2023-08-03 16:04:21,234 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 28 treesize of output 16 [2023-08-03 16:04:21,327 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 28 treesize of output 16 [2023-08-03 16:04:21,381 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:04:21,382 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:04:21,643 INFO L322 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2023-08-03 16:04:21,643 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 48 treesize of output 36 [2023-08-03 16:04:21,668 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 16 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:04:21,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272572910] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:04:21,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:04:21,669 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 13, 13] total 40 [2023-08-03 16:04:21,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098654536] [2023-08-03 16:04:21,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:04:21,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-08-03 16:04:21,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:21,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-08-03 16:04:21,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=1235, Unknown=0, NotChecked=0, Total=1560 [2023-08-03 16:04:24,028 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 378 [2023-08-03 16:04:24,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 139 transitions, 1658 flow. Second operand has 40 states, 40 states have (on average 161.275) internal successors, (6451), 40 states have internal predecessors, (6451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:24,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:24,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 378 [2023-08-03 16:04:24,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:24,950 INFO L124 PetriNetUnfolderBase]: 280/901 cut-off events. [2023-08-03 16:04:24,950 INFO L125 PetriNetUnfolderBase]: For 6802/6802 co-relation queries the response was YES. [2023-08-03 16:04:24,953 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4975 conditions, 901 events. 280/901 cut-off events. For 6802/6802 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 5489 event pairs, 120 based on Foata normal form. 8/909 useless extension candidates. Maximal degree in co-relation 4892. Up to 346 conditions per place. [2023-08-03 16:04:24,955 INFO L140 encePairwiseOnDemand]: 365/378 looper letters, 171 selfloop transitions, 73 changer transitions 5/252 dead transitions. [2023-08-03 16:04:24,955 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 252 transitions, 3424 flow [2023-08-03 16:04:24,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-08-03 16:04:24,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2023-08-03 16:04:24,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 3139 transitions. [2023-08-03 16:04:24,957 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4370648844333055 [2023-08-03 16:04:24,957 INFO L72 ComplementDD]: Start complementDD. Operand 19 states and 3139 transitions. [2023-08-03 16:04:24,957 INFO L73 IsDeterministic]: Start isDeterministic. Operand 19 states and 3139 transitions. [2023-08-03 16:04:24,958 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:24,958 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 19 states and 3139 transitions. [2023-08-03 16:04:24,960 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 20 states, 19 states have (on average 165.21052631578948) internal successors, (3139), 19 states have internal predecessors, (3139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:24,965 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 20 states, 20 states have (on average 378.0) internal successors, (7560), 20 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:24,966 INFO L81 ComplementDD]: Finished complementDD. Result has 20 states, 20 states have (on average 378.0) internal successors, (7560), 20 states have internal predecessors, (7560), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:24,966 INFO L175 Difference]: Start difference. First operand has 170 places, 139 transitions, 1658 flow. Second operand 19 states and 3139 transitions. [2023-08-03 16:04:24,966 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 252 transitions, 3424 flow [2023-08-03 16:04:24,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 252 transitions, 3360 flow, removed 18 selfloop flow, removed 6 redundant places. [2023-08-03 16:04:25,000 INFO L231 Difference]: Finished difference. Result has 185 places, 167 transitions, 2282 flow [2023-08-03 16:04:25,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=1590, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=2282, PETRI_PLACES=185, PETRI_TRANSITIONS=167} [2023-08-03 16:04:25,001 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 142 predicate places. [2023-08-03 16:04:25,001 INFO L495 AbstractCegarLoop]: Abstraction has has 185 places, 167 transitions, 2282 flow [2023-08-03 16:04:25,002 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 161.275) internal successors, (6451), 40 states have internal predecessors, (6451), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:25,002 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:25,002 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:25,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-03 16:04:25,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:25,208 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-03 16:04:25,208 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:25,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1421818974, now seen corresponding path program 3 times [2023-08-03 16:04:25,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:25,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1064694386] [2023-08-03 16:04:25,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:25,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:25,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:25,819 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 16:04:25,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:25,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1064694386] [2023-08-03 16:04:25,820 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1064694386] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:25,820 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1115982792] [2023-08-03 16:04:25,820 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-03 16:04:25,820 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:25,820 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:25,821 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 16:04:25,845 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-03 16:04:25,960 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-03 16:04:25,960 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 16:04:25,962 INFO L262 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 41 conjunts are in the unsatisfiable core [2023-08-03 16:04:25,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:26,111 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 28 treesize of output 16 [2023-08-03 16:04:26,227 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 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 28 treesize of output 16 [2023-08-03 16:04:26,271 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 16:04:26,271 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:04:26,271 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1115982792] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:26,271 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:04:26,271 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 23 [2023-08-03 16:04:26,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582585032] [2023-08-03 16:04:26,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:26,271 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-08-03 16:04:26,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:26,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-08-03 16:04:26,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2023-08-03 16:04:26,551 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 378 [2023-08-03 16:04:26,552 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 185 places, 167 transitions, 2282 flow. Second operand has 11 states, 11 states have (on average 159.36363636363637) internal successors, (1753), 11 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:26,552 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:26,552 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 378 [2023-08-03 16:04:26,552 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:26,983 INFO L124 PetriNetUnfolderBase]: 270/879 cut-off events. [2023-08-03 16:04:26,983 INFO L125 PetriNetUnfolderBase]: For 8051/8051 co-relation queries the response was YES. [2023-08-03 16:04:26,986 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5180 conditions, 879 events. 270/879 cut-off events. For 8051/8051 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 5333 event pairs, 72 based on Foata normal form. 8/887 useless extension candidates. Maximal degree in co-relation 5093. Up to 338 conditions per place. [2023-08-03 16:04:26,987 INFO L140 encePairwiseOnDemand]: 365/378 looper letters, 0 selfloop transitions, 0 changer transitions 229/229 dead transitions. [2023-08-03 16:04:26,987 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 196 places, 229 transitions, 3363 flow [2023-08-03 16:04:26,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-03 16:04:26,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-03 16:04:26,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2291 transitions. [2023-08-03 16:04:26,990 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43291761148904007 [2023-08-03 16:04:26,990 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2291 transitions. [2023-08-03 16:04:26,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2291 transitions. [2023-08-03 16:04:26,990 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:26,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2291 transitions. [2023-08-03 16:04:26,993 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 163.64285714285714) internal successors, (2291), 14 states have internal predecessors, (2291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:26,996 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 378.0) internal successors, (5670), 15 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:26,997 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 378.0) internal successors, (5670), 15 states have internal predecessors, (5670), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:26,997 INFO L175 Difference]: Start difference. First operand has 185 places, 167 transitions, 2282 flow. Second operand 14 states and 2291 transitions. [2023-08-03 16:04:26,997 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 196 places, 229 transitions, 3363 flow [2023-08-03 16:04:27,032 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 190 places, 229 transitions, 3209 flow, removed 54 selfloop flow, removed 6 redundant places. [2023-08-03 16:04:27,034 INFO L231 Difference]: Finished difference. Result has 190 places, 0 transitions, 0 flow [2023-08-03 16:04:27,034 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=378, PETRI_DIFFERENCE_MINUEND_FLOW=2129, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=165, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=0, PETRI_PLACES=190, PETRI_TRANSITIONS=0} [2023-08-03 16:04:27,035 INFO L281 CegarLoopForPetriNet]: 43 programPoint places, 147 predicate places. [2023-08-03 16:04:27,035 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 0 transitions, 0 flow [2023-08-03 16:04:27,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 159.36363636363637) internal successors, (1753), 11 states have internal predecessors, (1753), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:27,035 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-08-03 16:04:27,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 16:04:27,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-03 16:04:27,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-08-03 16:04:27,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-08-03 16:04:27,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-08-03 16:04:27,036 INFO L805 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 16:04:27,042 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-03 16:04:27,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:27,242 INFO L445 BasicCegarLoop]: Path program histogram: [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:27,244 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 16:04:27,245 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 16:04:27,247 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 04:04:27 BasicIcfg [2023-08-03 16:04:27,247 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 16:04:27,247 INFO L158 Benchmark]: Toolchain (without parser) took 47065.71ms. Allocated memory was 513.8MB in the beginning and 740.3MB in the end (delta: 226.5MB). Free memory was 465.3MB in the beginning and 502.2MB in the end (delta: -36.9MB). Peak memory consumption was 191.4MB. Max. memory is 16.0GB. [2023-08-03 16:04:27,247 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 354.4MB. Free memory was 307.2MB in the beginning and 307.0MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:04:27,248 INFO L158 Benchmark]: CACSL2BoogieTranslator took 422.98ms. Allocated memory is still 513.8MB. Free memory was 465.0MB in the beginning and 445.2MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 16:04:27,248 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.65ms. Allocated memory is still 513.8MB. Free memory was 445.2MB in the beginning and 443.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:04:27,248 INFO L158 Benchmark]: Boogie Preprocessor took 30.97ms. Allocated memory is still 513.8MB. Free memory was 443.1MB in the beginning and 441.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:04:27,248 INFO L158 Benchmark]: RCFGBuilder took 387.77ms. Allocated memory is still 513.8MB. Free memory was 441.1MB in the beginning and 425.2MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 16:04:27,249 INFO L158 Benchmark]: TraceAbstraction took 46173.21ms. Allocated memory was 513.8MB in the beginning and 740.3MB in the end (delta: 226.5MB). Free memory was 424.3MB in the beginning and 502.2MB in the end (delta: -77.8MB). Peak memory consumption was 149.5MB. Max. memory is 16.0GB. [2023-08-03 16:04:27,254 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 354.4MB. Free memory was 307.2MB in the beginning and 307.0MB in the end (delta: 160.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 422.98ms. Allocated memory is still 513.8MB. Free memory was 465.0MB in the beginning and 445.2MB in the end (delta: 19.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 45.65ms. Allocated memory is still 513.8MB. Free memory was 445.2MB in the beginning and 443.1MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.97ms. Allocated memory is still 513.8MB. Free memory was 443.1MB in the beginning and 441.1MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 387.77ms. Allocated memory is still 513.8MB. Free memory was 441.1MB in the beginning and 425.2MB in the end (delta: 15.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 46173.21ms. Allocated memory was 513.8MB in the beginning and 740.3MB in the end (delta: 226.5MB). Free memory was 424.3MB in the beginning and 502.2MB in the end (delta: -77.8MB). Peak memory consumption was 149.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 232]: Unsoundness Warning unspecified type, defaulting to int C: short [232] - GenericResultAtLocation [Line: 233]: Unsoundness Warning unspecified type, defaulting to int C: short [233] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.6s, 127 PlacesBefore, 27 PlacesAfterwards, 135 TransitionsBefore, 30 TransitionsAfterwards, 5040 CoEnabledTransitionPairs, 7 FixpointIterations, 32 TrivialSequentialCompositions, 68 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 5 ChoiceCompositions, 131 TotalNumberOfCompositions, 7214 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4569, independent: 4382, independent conditional: 0, independent unconditional: 4382, dependent: 187, dependent conditional: 0, dependent unconditional: 187, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2789, independent: 2745, independent conditional: 0, independent unconditional: 2745, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4569, independent: 1637, independent conditional: 0, independent unconditional: 1637, dependent: 143, dependent conditional: 0, dependent unconditional: 143, unknown: 2789, unknown conditional: 0, unknown unconditional: 2789] , Statistics on independence cache: Total cache size (in pairs): 86, Positive cache size: 69, Positive conditional cache size: 0, Positive unconditional cache size: 69, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.9s, 179 PlacesBefore, 43 PlacesAfterwards, 192 TransitionsBefore, 48 TransitionsAfterwards, 16464 CoEnabledTransitionPairs, 6 FixpointIterations, 32 TrivialSequentialCompositions, 108 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 38 ConcurrentYvCompositions, 8 ChoiceCompositions, 186 TotalNumberOfCompositions, 23739 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 15672, independent: 15412, independent conditional: 0, independent unconditional: 15412, dependent: 260, dependent conditional: 0, dependent unconditional: 260, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 9184, independent: 9096, independent conditional: 0, independent unconditional: 9096, dependent: 88, dependent conditional: 0, dependent unconditional: 88, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 15672, independent: 6316, independent conditional: 0, independent unconditional: 6316, dependent: 172, dependent conditional: 0, dependent unconditional: 172, unknown: 9184, unknown conditional: 0, unknown unconditional: 9184] , Statistics on independence cache: Total cache size (in pairs): 384, Positive cache size: 356, Positive conditional cache size: 0, Positive unconditional cache size: 356, 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 - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 19]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 175 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: 4.0s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.8s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 225 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 42.0s, OverallIterations: 19, TraceHistogramMax: 3, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 22.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 80 mSolverCounterUnknown, 8197 SdHoareTripleChecker+Valid, 14.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7402 mSDsluCounter, 6487 SdHoareTripleChecker+Invalid, 12.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 562 IncrementalHoareTripleChecker+Unchecked, 6333 mSDsCounter, 238 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 30664 IncrementalHoareTripleChecker+Invalid, 31544 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 238 mSolverCounterUnsat, 154 mSDtfsCounter, 30664 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 825 GetRequests, 411 SyntacticMatches, 10 SemanticMatches, 404 ConstructedPredicates, 4 IntricatePredicates, 1 DeprecatedPredicates, 3319 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2282occurred in iteration=18, InterpolantAutomatonStates: 219, 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: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 11.3s InterpolantComputationTime, 740 NumberOfCodeBlocks, 718 NumberOfCodeBlocksAsserted, 37 NumberOfCheckSat, 916 ConstructedInterpolants, 59 QuantifiedInterpolants, 10133 SizeOfPredicates, 209 NumberOfNonLiveVariables, 2947 ConjunctsInSsa, 602 ConjunctsInUnsatCore, 43 InterpolantComputations, 9 PerfectInterpolantSequences, 204/343 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 16:04:27,278 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...