/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_28-race_reach_46-escape_racefree_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 16:04:04,669 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 16:04:04,734 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 16:04:04,740 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 16:04:04,740 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 16:04:04,741 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 16:04:04,741 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 16:04:04,760 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 16:04:04,763 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 16:04:04,767 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 16:04:04,767 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 16:04:04,767 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 16:04:04,768 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 16:04:04,769 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 16:04:04,769 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 16:04:04,770 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 16:04:04,770 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 16:04:04,770 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 16:04:04,770 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 16:04:04,770 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 16:04:04,770 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 16:04:04,771 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 16:04:04,771 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 16:04:04,771 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 16:04:04,771 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 16:04:04,771 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 16:04:04,771 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 16:04:04,772 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 16:04:04,772 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 16:04:04,772 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 16:04:04,784 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:04:04,785 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 16:04:04,785 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 16:04:04,785 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 16:04:04,785 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 16:04:04,785 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 16:04:04,785 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 16:04:04,785 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 16:04:04,786 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 16:04:04,786 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 16:04:04,786 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 16:04:04,786 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 16:04:04,927 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 16:04:04,940 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 16:04:04,942 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 16:04:04,943 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 16:04:04,943 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 16:04:04,944 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_28-race_reach_46-escape_racefree_bound2.i [2023-08-03 16:04:05,884 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 16:04:06,128 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 16:04:06,129 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_28-race_reach_46-escape_racefree_bound2.i [2023-08-03 16:04:06,140 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed0eec1ee/5bfbd2148fa9470c9d933e74959f9126/FLAGc04ce389f [2023-08-03 16:04:06,149 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed0eec1ee/5bfbd2148fa9470c9d933e74959f9126 [2023-08-03 16:04:06,151 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 16:04:06,152 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 16:04:06,153 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 16:04:06,153 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 16:04:06,155 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 16:04:06,156 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:04:06" (1/1) ... [2023-08-03 16:04:06,156 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@437304c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:06, skipping insertion in model container [2023-08-03 16:04:06,157 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 04:04:06" (1/1) ... [2023-08-03 16:04:06,183 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 16:04:06,405 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_28-race_reach_46-escape_racefree_bound2.i[30176,30189] [2023-08-03 16:04:06,420 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:04:06,432 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 16:04:06,456 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 16:04:06,457 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [244] [2023-08-03 16:04:06,469 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_28-race_reach_46-escape_racefree_bound2.i[30176,30189] [2023-08-03 16:04:06,474 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 16:04:06,508 INFO L206 MainTranslator]: Completed translation [2023-08-03 16:04:06,510 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:06 WrapperNode [2023-08-03 16:04:06,510 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 16:04:06,511 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 16:04:06,511 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 16:04:06,511 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 16:04:06,516 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:06" (1/1) ... [2023-08-03 16:04:06,539 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:06" (1/1) ... [2023-08-03 16:04:06,562 INFO L138 Inliner]: procedures = 170, calls = 39, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 87 [2023-08-03 16:04:06,562 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 16:04:06,563 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 16:04:06,563 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 16:04:06,563 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 16:04:06,568 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:06" (1/1) ... [2023-08-03 16:04:06,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:06" (1/1) ... [2023-08-03 16:04:06,582 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:06" (1/1) ... [2023-08-03 16:04:06,583 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:06" (1/1) ... [2023-08-03 16:04:06,587 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:06" (1/1) ... [2023-08-03 16:04:06,589 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:06" (1/1) ... [2023-08-03 16:04:06,590 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:06" (1/1) ... [2023-08-03 16:04:06,591 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:06" (1/1) ... [2023-08-03 16:04:06,593 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 16:04:06,593 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 16:04:06,594 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 16:04:06,594 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 16:04:06,594 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:06" (1/1) ... [2023-08-03 16:04:06,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 16:04:06,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:06,635 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 16:04:06,637 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 16:04:06,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 16:04:06,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 16:04:06,683 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-03 16:04:06,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 16:04:06,683 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 16:04:06,683 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-08-03 16:04:06,683 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-08-03 16:04:06,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 16:04:06,683 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 16:04:06,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 16:04:06,683 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 16:04:06,684 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 16:04:06,766 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 16:04:06,768 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 16:04:06,904 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 16:04:06,910 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 16:04:06,910 INFO L302 CfgBuilder]: Removed 10 assume(true) statements. [2023-08-03 16:04:06,911 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:04:06 BoogieIcfgContainer [2023-08-03 16:04:06,911 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 16:04:06,913 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 16:04:06,913 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 16:04:06,915 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 16:04:06,915 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 04:04:06" (1/3) ... [2023-08-03 16:04:06,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183d80b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:04:06, skipping insertion in model container [2023-08-03 16:04:06,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 04:04:06" (2/3) ... [2023-08-03 16:04:06,916 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@183d80b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 04:04:06, skipping insertion in model container [2023-08-03 16:04:06,916 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 04:04:06" (3/3) ... [2023-08-03 16:04:06,917 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_28-race_reach_46-escape_racefree_bound2.i [2023-08-03 16:04:06,923 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 16:04:06,929 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 16:04:06,929 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 16:04:06,929 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 16:04:06,973 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-03 16:04:07,011 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 109 places, 118 transitions, 244 flow [2023-08-03 16:04:07,080 INFO L124 PetriNetUnfolderBase]: 17/155 cut-off events. [2023-08-03 16:04:07,080 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 16:04:07,085 INFO L83 FinitePrefix]: Finished finitePrefix Result has 161 conditions, 155 events. 17/155 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 376 event pairs, 0 based on Foata normal form. 0/133 useless extension candidates. Maximal degree in co-relation 75. Up to 4 conditions per place. [2023-08-03 16:04:07,086 INFO L82 GeneralOperation]: Start removeDead. Operand has 109 places, 118 transitions, 244 flow [2023-08-03 16:04:07,092 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 105 places, 113 transitions, 231 flow [2023-08-03 16:04:07,094 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:04:07,111 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 105 places, 113 transitions, 231 flow [2023-08-03 16:04:07,114 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 105 places, 113 transitions, 231 flow [2023-08-03 16:04:07,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 113 transitions, 231 flow [2023-08-03 16:04:07,204 INFO L124 PetriNetUnfolderBase]: 16/150 cut-off events. [2023-08-03 16:04:07,205 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:04:07,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 150 events. 16/150 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 359 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 75. Up to 4 conditions per place. [2023-08-03 16:04:07,207 INFO L119 LiptonReduction]: Number of co-enabled transitions 2838 [2023-08-03 16:04:09,648 INFO L134 LiptonReduction]: Checked pairs total: 4947 [2023-08-03 16:04:09,648 INFO L136 LiptonReduction]: Total number of compositions: 96 [2023-08-03 16:04:09,663 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:04:09,669 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;@5dc3da6c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:04:09,669 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 16:04:09,671 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:04:09,671 INFO L124 PetriNetUnfolderBase]: 0/8 cut-off events. [2023-08-03 16:04:09,671 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:04:09,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:09,672 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 16:04:09,672 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:09,678 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:09,678 INFO L85 PathProgramCache]: Analyzing trace with hash 13800893, now seen corresponding path program 1 times [2023-08-03 16:04:09,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:09,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849251463] [2023-08-03 16:04:09,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:09,684 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:09,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:09,817 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 16:04:09,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:09,817 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849251463] [2023-08-03 16:04:09,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849251463] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:09,818 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:09,818 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:04:09,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485760070] [2023-08-03 16:04:09,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:09,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:04:09,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:09,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:04:09,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:04:09,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 214 [2023-08-03 16:04:09,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 32 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 16:04:09,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:09,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 214 [2023-08-03 16:04:09,849 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:09,887 INFO L124 PetriNetUnfolderBase]: 72/180 cut-off events. [2023-08-03 16:04:09,887 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:04:09,888 INFO L83 FinitePrefix]: Finished finitePrefix Result has 351 conditions, 180 events. 72/180 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 615 event pairs, 56 based on Foata normal form. 9/168 useless extension candidates. Maximal degree in co-relation 336. Up to 153 conditions per place. [2023-08-03 16:04:09,889 INFO L140 encePairwiseOnDemand]: 202/214 looper letters, 24 selfloop transitions, 2 changer transitions 4/33 dead transitions. [2023-08-03 16:04:09,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 33 transitions, 129 flow [2023-08-03 16:04:09,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:04:09,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:04:09,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 345 transitions. [2023-08-03 16:04:09,898 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5373831775700935 [2023-08-03 16:04:09,898 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 345 transitions. [2023-08-03 16:04:09,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 345 transitions. [2023-08-03 16:04:09,899 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:09,901 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 345 transitions. [2023-08-03 16:04:09,903 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.0) internal successors, (345), 3 states have internal predecessors, (345), 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 16:04:09,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 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 16:04:09,906 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 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 16:04:09,907 INFO L175 Difference]: Start difference. First operand has 27 places, 32 transitions, 69 flow. Second operand 3 states and 345 transitions. [2023-08-03 16:04:09,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 33 transitions, 129 flow [2023-08-03 16:04:09,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 33 transitions, 129 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:04:09,910 INFO L231 Difference]: Finished difference. Result has 29 places, 19 transitions, 51 flow [2023-08-03 16:04:09,911 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=51, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=51, PETRI_PLACES=29, PETRI_TRANSITIONS=19} [2023-08-03 16:04:09,913 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2023-08-03 16:04:09,913 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 19 transitions, 51 flow [2023-08-03 16:04:09,913 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 101.33333333333333) internal successors, (304), 3 states have internal predecessors, (304), 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 16:04:09,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:09,914 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 16:04:09,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 16:04:09,914 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:09,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:09,914 INFO L85 PathProgramCache]: Analyzing trace with hash 385933941, now seen corresponding path program 1 times [2023-08-03 16:04:09,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:09,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124305798] [2023-08-03 16:04:09,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:09,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:09,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:04:09,949 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 16:04:09,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 16:04:09,973 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 16:04:09,973 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 16:04:09,974 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-03 16:04:09,975 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2023-08-03 16:04:09,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 16:04:09,976 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 16:04:09,981 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 16:04:09,981 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 16:04:10,007 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-03 16:04:10,012 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 153 transitions, 324 flow [2023-08-03 16:04:10,035 INFO L124 PetriNetUnfolderBase]: 31/253 cut-off events. [2023-08-03 16:04:10,036 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 16:04:10,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 253 events. 31/253 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 757 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 157. Up to 8 conditions per place. [2023-08-03 16:04:10,037 INFO L82 GeneralOperation]: Start removeDead. Operand has 139 places, 153 transitions, 324 flow [2023-08-03 16:04:10,040 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 153 transitions, 324 flow [2023-08-03 16:04:10,040 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 16:04:10,040 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 153 transitions, 324 flow [2023-08-03 16:04:10,041 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 153 transitions, 324 flow [2023-08-03 16:04:10,041 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 153 transitions, 324 flow [2023-08-03 16:04:10,061 INFO L124 PetriNetUnfolderBase]: 31/253 cut-off events. [2023-08-03 16:04:10,061 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 16:04:10,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 267 conditions, 253 events. 31/253 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 757 event pairs, 0 based on Foata normal form. 0/215 useless extension candidates. Maximal degree in co-relation 157. Up to 8 conditions per place. [2023-08-03 16:04:10,068 INFO L119 LiptonReduction]: Number of co-enabled transitions 8580 [2023-08-03 16:04:12,769 INFO L134 LiptonReduction]: Checked pairs total: 17084 [2023-08-03 16:04:12,770 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-08-03 16:04:12,771 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 16:04:12,772 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;@5dc3da6c, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 16:04:12,772 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-03 16:04:12,774 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 16:04:12,774 INFO L124 PetriNetUnfolderBase]: 0/6 cut-off events. [2023-08-03 16:04:12,774 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 16:04:12,774 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:12,774 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-03 16:04:12,774 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:12,775 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:12,775 INFO L85 PathProgramCache]: Analyzing trace with hash 23158827, now seen corresponding path program 1 times [2023-08-03 16:04:12,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:12,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151418099] [2023-08-03 16:04:12,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:12,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:12,841 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 16:04:12,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:12,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151418099] [2023-08-03 16:04:12,842 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151418099] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:12,842 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:12,842 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 16:04:12,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181224438] [2023-08-03 16:04:12,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:12,842 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 16:04:12,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:12,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 16:04:12,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 16:04:12,856 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 269 [2023-08-03 16:04:12,856 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 55 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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 16:04:12,857 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:12,857 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 269 [2023-08-03 16:04:12,857 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:13,123 INFO L124 PetriNetUnfolderBase]: 1833/3238 cut-off events. [2023-08-03 16:04:13,123 INFO L125 PetriNetUnfolderBase]: For 51/51 co-relation queries the response was YES. [2023-08-03 16:04:13,127 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6300 conditions, 3238 events. 1833/3238 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 114. Compared 18908 event pairs, 832 based on Foata normal form. 450/3338 useless extension candidates. Maximal degree in co-relation 586. Up to 2974 conditions per place. [2023-08-03 16:04:13,134 INFO L140 encePairwiseOnDemand]: 252/269 looper letters, 34 selfloop transitions, 2 changer transitions 9/52 dead transitions. [2023-08-03 16:04:13,134 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 52 transitions, 210 flow [2023-08-03 16:04:13,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:04:13,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:04:13,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-08-03 16:04:13,138 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5526641883519207 [2023-08-03 16:04:13,138 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-08-03 16:04:13,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-08-03 16:04:13,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:13,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-08-03 16:04:13,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 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 16:04:13,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:13,143 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:13,143 INFO L175 Difference]: Start difference. First operand has 44 places, 55 transitions, 128 flow. Second operand 3 states and 446 transitions. [2023-08-03 16:04:13,143 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 52 transitions, 210 flow [2023-08-03 16:04:13,145 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 52 transitions, 210 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 16:04:13,146 INFO L231 Difference]: Finished difference. Result has 47 places, 33 transitions, 88 flow [2023-08-03 16:04:13,146 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=100, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=47, PETRI_TRANSITIONS=33} [2023-08-03 16:04:13,148 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 3 predicate places. [2023-08-03 16:04:13,149 INFO L495 AbstractCegarLoop]: Abstraction has has 47 places, 33 transitions, 88 flow [2023-08-03 16:04:13,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.33333333333334) internal successors, (385), 3 states have internal predecessors, (385), 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 16:04:13,149 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:13,149 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:13,149 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 16:04:13,149 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:13,150 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:13,150 INFO L85 PathProgramCache]: Analyzing trace with hash -1603896597, now seen corresponding path program 1 times [2023-08-03 16:04:13,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:13,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364548153] [2023-08-03 16:04:13,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:13,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:13,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:13,222 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 16:04:13,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:13,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364548153] [2023-08-03 16:04:13,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1364548153] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:13,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [3792205] [2023-08-03 16:04:13,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:13,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:13,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:13,238 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 16:04:13,239 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 16:04:13,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:13,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 16:04:13,319 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:13,351 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 16:04:13,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:04:13,365 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 16:04:13,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [3792205] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:04:13,366 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:04:13,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 16:04:13,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427438168] [2023-08-03 16:04:13,367 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:04:13,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:04:13,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:13,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:04:13,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 16:04:13,384 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 269 [2023-08-03 16:04:13,385 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 33 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 128.2) internal successors, (641), 5 states have internal predecessors, (641), 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 16:04:13,385 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:13,385 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 269 [2023-08-03 16:04:13,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:13,583 INFO L124 PetriNetUnfolderBase]: 904/1559 cut-off events. [2023-08-03 16:04:13,584 INFO L125 PetriNetUnfolderBase]: For 120/120 co-relation queries the response was YES. [2023-08-03 16:04:13,585 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3294 conditions, 1559 events. 904/1559 cut-off events. For 120/120 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 8138 event pairs, 80 based on Foata normal form. 10/1569 useless extension candidates. Maximal degree in co-relation 335. Up to 1005 conditions per place. [2023-08-03 16:04:13,590 INFO L140 encePairwiseOnDemand]: 265/269 looper letters, 50 selfloop transitions, 4 changer transitions 0/61 dead transitions. [2023-08-03 16:04:13,590 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 61 transitions, 252 flow [2023-08-03 16:04:13,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:04:13,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:04:13,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 559 transitions. [2023-08-03 16:04:13,592 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5195167286245354 [2023-08-03 16:04:13,592 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 559 transitions. [2023-08-03 16:04:13,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 559 transitions. [2023-08-03 16:04:13,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:13,592 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 559 transitions. [2023-08-03 16:04:13,593 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.75) internal successors, (559), 4 states have internal predecessors, (559), 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 16:04:13,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 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 16:04:13,595 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 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 16:04:13,595 INFO L175 Difference]: Start difference. First operand has 47 places, 33 transitions, 88 flow. Second operand 4 states and 559 transitions. [2023-08-03 16:04:13,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 61 transitions, 252 flow [2023-08-03 16:04:13,597 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 61 transitions, 248 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 16:04:13,598 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 104 flow [2023-08-03 16:04:13,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=104, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-08-03 16:04:13,600 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2023-08-03 16:04:13,600 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 104 flow [2023-08-03 16:04:13,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.2) internal successors, (641), 5 states have internal predecessors, (641), 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 16:04:13,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:13,600 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 16:04:13,617 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 16:04:13,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:13,809 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:13,810 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:13,810 INFO L85 PathProgramCache]: Analyzing trace with hash 95025476, now seen corresponding path program 1 times [2023-08-03 16:04:13,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:13,810 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008252568] [2023-08-03 16:04:13,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:13,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:13,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:13,882 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 16:04:13,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:13,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008252568] [2023-08-03 16:04:13,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008252568] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:13,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [829292244] [2023-08-03 16:04:13,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:13,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:13,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:13,894 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 16:04:13,946 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 16:04:13,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:13,985 INFO L262 TraceCheckSpWp]: Trace formula consists of 140 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 16:04:13,986 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:14,005 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 16:04:14,005 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 16:04:14,005 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [829292244] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:14,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 16:04:14,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 16:04:14,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584604344] [2023-08-03 16:04:14,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:14,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:04:14,006 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:14,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:04:14,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 16:04:14,016 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 269 [2023-08-03 16:04:14,016 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 104 flow. Second operand has 5 states, 5 states have (on average 127.6) internal successors, (638), 5 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:14,016 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:14,017 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 269 [2023-08-03 16:04:14,017 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:14,142 INFO L124 PetriNetUnfolderBase]: 743/1268 cut-off events. [2023-08-03 16:04:14,143 INFO L125 PetriNetUnfolderBase]: For 610/610 co-relation queries the response was YES. [2023-08-03 16:04:14,144 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3016 conditions, 1268 events. 743/1268 cut-off events. For 610/610 co-relation queries the response was YES. Maximal size of possible extension queue 53. Compared 6322 event pairs, 0 based on Foata normal form. 90/1358 useless extension candidates. Maximal degree in co-relation 293. Up to 1004 conditions per place. [2023-08-03 16:04:14,149 INFO L140 encePairwiseOnDemand]: 266/269 looper letters, 50 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2023-08-03 16:04:14,149 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 59 transitions, 256 flow [2023-08-03 16:04:14,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 16:04:14,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 16:04:14,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 684 transitions. [2023-08-03 16:04:14,151 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5085501858736059 [2023-08-03 16:04:14,151 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 684 transitions. [2023-08-03 16:04:14,151 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 684 transitions. [2023-08-03 16:04:14,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:14,151 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 684 transitions. [2023-08-03 16:04:14,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 136.8) internal successors, (684), 5 states have internal predecessors, (684), 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 16:04:14,154 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 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 16:04:14,155 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 269.0) internal successors, (1614), 6 states have internal predecessors, (1614), 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 16:04:14,155 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 104 flow. Second operand 5 states and 684 transitions. [2023-08-03 16:04:14,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 59 transitions, 256 flow [2023-08-03 16:04:14,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 44 places, 59 transitions, 249 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 16:04:14,158 INFO L231 Difference]: Finished difference. Result has 44 places, 32 transitions, 93 flow [2023-08-03 16:04:14,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=87, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=93, PETRI_PLACES=44, PETRI_TRANSITIONS=32} [2023-08-03 16:04:14,160 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2023-08-03 16:04:14,160 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 32 transitions, 93 flow [2023-08-03 16:04:14,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.6) internal successors, (638), 5 states have internal predecessors, (638), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:14,160 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:14,160 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:14,171 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 16:04:14,365 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:14,366 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:14,366 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:14,366 INFO L85 PathProgramCache]: Analyzing trace with hash -1349185974, now seen corresponding path program 1 times [2023-08-03 16:04:14,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:14,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663395415] [2023-08-03 16:04:14,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:14,366 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:14,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:14,502 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 16:04:14,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:14,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663395415] [2023-08-03 16:04:14,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663395415] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:14,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2037787302] [2023-08-03 16:04:14,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:14,503 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:14,503 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:14,504 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 16:04:14,508 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 16:04:14,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:14,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 16 conjunts are in the unsatisfiable core [2023-08-03 16:04:14,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:14,590 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2023-08-03 16:04:14,600 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 16:04:14,620 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 16:04:14,628 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 16:04:14,628 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:04:14,650 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_100 (Array Int Int))) (= 0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id~0#1.base| v_ArrVal_100) |c_ULTIMATE.start_main_~#i~0#1.base|) |c_ULTIMATE.start_main_~#i~0#1.offset|))) is different from false [2023-08-03 16:04:14,660 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 16:04:14,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2037787302] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:04:14,660 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:04:14,661 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 2, 2] total 3 [2023-08-03 16:04:14,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531175648] [2023-08-03 16:04:14,661 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:04:14,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 16:04:14,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:14,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 16:04:14,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=7, Unknown=1, NotChecked=4, Total=20 [2023-08-03 16:04:14,694 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 269 [2023-08-03 16:04:14,694 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 32 transitions, 93 flow. Second operand has 5 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 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 16:04:14,694 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:14,694 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 269 [2023-08-03 16:04:14,694 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:14,809 INFO L124 PetriNetUnfolderBase]: 804/1387 cut-off events. [2023-08-03 16:04:14,809 INFO L125 PetriNetUnfolderBase]: For 969/969 co-relation queries the response was YES. [2023-08-03 16:04:14,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3193 conditions, 1387 events. 804/1387 cut-off events. For 969/969 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 6668 event pairs, 324 based on Foata normal form. 12/1398 useless extension candidates. Maximal degree in co-relation 2398. Up to 1203 conditions per place. [2023-08-03 16:04:14,815 INFO L140 encePairwiseOnDemand]: 265/269 looper letters, 37 selfloop transitions, 3 changer transitions 0/45 dead transitions. [2023-08-03 16:04:14,815 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 45 transitions, 220 flow [2023-08-03 16:04:14,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 16:04:14,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 16:04:14,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 339 transitions. [2023-08-03 16:04:14,816 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4200743494423792 [2023-08-03 16:04:14,816 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 339 transitions. [2023-08-03 16:04:14,816 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 339 transitions. [2023-08-03 16:04:14,816 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:14,816 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 339 transitions. [2023-08-03 16:04:14,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 113.0) internal successors, (339), 3 states have internal predecessors, (339), 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 16:04:14,818 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:14,818 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 16:04:14,818 INFO L175 Difference]: Start difference. First operand has 44 places, 32 transitions, 93 flow. Second operand 3 states and 339 transitions. [2023-08-03 16:04:14,818 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 45 transitions, 220 flow [2023-08-03 16:04:14,819 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 45 transitions, 212 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 16:04:14,819 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 107 flow [2023-08-03 16:04:14,820 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-08-03 16:04:14,820 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 0 predicate places. [2023-08-03 16:04:14,820 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 107 flow [2023-08-03 16:04:14,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 103.0) internal successors, (515), 5 states have internal predecessors, (515), 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 16:04:14,820 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:14,821 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:14,827 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-03 16:04:15,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:15,025 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:15,026 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:15,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1262647434, now seen corresponding path program 1 times [2023-08-03 16:04:15,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:15,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245544694] [2023-08-03 16:04:15,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:15,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:15,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 16:04:15,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:15,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245544694] [2023-08-03 16:04:15,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245544694] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 16:04:15,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 16:04:15,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 16:04:15,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153166826] [2023-08-03 16:04:15,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 16:04:15,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 16:04:15,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:15,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 16:04:15,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 16:04:15,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 269 [2023-08-03 16:04:15,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 107 flow. Second operand has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 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 16:04:15,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:15,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 269 [2023-08-03 16:04:15,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:15,241 INFO L124 PetriNetUnfolderBase]: 62/202 cut-off events. [2023-08-03 16:04:15,241 INFO L125 PetriNetUnfolderBase]: For 250/250 co-relation queries the response was YES. [2023-08-03 16:04:15,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 545 conditions, 202 events. 62/202 cut-off events. For 250/250 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 723 event pairs, 6 based on Foata normal form. 70/272 useless extension candidates. Maximal degree in co-relation 430. Up to 149 conditions per place. [2023-08-03 16:04:15,242 INFO L140 encePairwiseOnDemand]: 263/269 looper letters, 26 selfloop transitions, 6 changer transitions 0/38 dead transitions. [2023-08-03 16:04:15,242 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 38 transitions, 193 flow [2023-08-03 16:04:15,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 16:04:15,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 16:04:15,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 523 transitions. [2023-08-03 16:04:15,243 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48605947955390333 [2023-08-03 16:04:15,243 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 523 transitions. [2023-08-03 16:04:15,243 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 523 transitions. [2023-08-03 16:04:15,244 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:15,244 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 523 transitions. [2023-08-03 16:04:15,244 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 130.75) internal successors, (523), 4 states have internal predecessors, (523), 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 16:04:15,246 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 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 16:04:15,246 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 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 16:04:15,246 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 107 flow. Second operand 4 states and 523 transitions. [2023-08-03 16:04:15,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 38 transitions, 193 flow [2023-08-03 16:04:15,247 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 38 transitions, 190 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 16:04:15,247 INFO L231 Difference]: Finished difference. Result has 46 places, 34 transitions, 116 flow [2023-08-03 16:04:15,247 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=116, PETRI_PLACES=46, PETRI_TRANSITIONS=34} [2023-08-03 16:04:15,248 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 2 predicate places. [2023-08-03 16:04:15,248 INFO L495 AbstractCegarLoop]: Abstraction has has 46 places, 34 transitions, 116 flow [2023-08-03 16:04:15,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 126.0) internal successors, (504), 4 states have internal predecessors, (504), 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 16:04:15,248 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:15,249 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] [2023-08-03 16:04:15,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 16:04:15,249 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:15,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:15,249 INFO L85 PathProgramCache]: Analyzing trace with hash -743764516, now seen corresponding path program 1 times [2023-08-03 16:04:15,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:15,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95961677] [2023-08-03 16:04:15,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:15,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:15,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:15,571 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 16:04:15,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:15,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95961677] [2023-08-03 16:04:15,571 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95961677] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:15,571 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11675647] [2023-08-03 16:04:15,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:15,571 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:15,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:15,573 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 16:04:15,586 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 16:04:15,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:15,668 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-03 16:04:15,670 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:15,681 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 18 treesize of output 16 [2023-08-03 16:04:15,707 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 16:04:15,761 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 16:04:15,840 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-08-03 16:04:15,894 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 16:04:15,924 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 16:04:15,924 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:04:15,988 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_180 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id~0#1.base| v_ArrVal_180) |c_ULTIMATE.start_main_~#i~0#1.base|) |c_ULTIMATE.start_main_~#i~0#1.offset|) 0)) is different from false [2023-08-03 16:04:16,000 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 16:04:16,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11675647] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:04:16,000 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:04:16,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 5] total 20 [2023-08-03 16:04:16,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213198093] [2023-08-03 16:04:16,001 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:04:16,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-08-03 16:04:16,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:16,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-08-03 16:04:16,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=343, Unknown=1, NotChecked=38, Total=462 [2023-08-03 16:04:16,079 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 269 [2023-08-03 16:04:16,080 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 34 transitions, 116 flow. Second operand has 22 states, 22 states have (on average 96.27272727272727) internal successors, (2118), 22 states have internal predecessors, (2118), 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 16:04:16,080 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:16,080 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 269 [2023-08-03 16:04:16,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:16,393 INFO L124 PetriNetUnfolderBase]: 90/286 cut-off events. [2023-08-03 16:04:16,393 INFO L125 PetriNetUnfolderBase]: For 235/235 co-relation queries the response was YES. [2023-08-03 16:04:16,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 821 conditions, 286 events. 90/286 cut-off events. For 235/235 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1239 event pairs, 14 based on Foata normal form. 2/288 useless extension candidates. Maximal degree in co-relation 686. Up to 123 conditions per place. [2023-08-03 16:04:16,394 INFO L140 encePairwiseOnDemand]: 259/269 looper letters, 64 selfloop transitions, 14 changer transitions 6/89 dead transitions. [2023-08-03 16:04:16,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 89 transitions, 524 flow [2023-08-03 16:04:16,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-03 16:04:16,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-03 16:04:16,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1114 transitions. [2023-08-03 16:04:16,396 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3764785400473133 [2023-08-03 16:04:16,397 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1114 transitions. [2023-08-03 16:04:16,397 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1114 transitions. [2023-08-03 16:04:16,397 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:16,397 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1114 transitions. [2023-08-03 16:04:16,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 101.27272727272727) internal successors, (1114), 11 states have internal predecessors, (1114), 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 16:04:16,401 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 269.0) internal successors, (3228), 12 states have internal predecessors, (3228), 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 16:04:16,401 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 269.0) internal successors, (3228), 12 states have internal predecessors, (3228), 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 16:04:16,401 INFO L175 Difference]: Start difference. First operand has 46 places, 34 transitions, 116 flow. Second operand 11 states and 1114 transitions. [2023-08-03 16:04:16,401 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 89 transitions, 524 flow [2023-08-03 16:04:16,402 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 89 transitions, 509 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 16:04:16,403 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 205 flow [2023-08-03 16:04:16,403 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=205, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2023-08-03 16:04:16,403 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 16 predicate places. [2023-08-03 16:04:16,404 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 205 flow [2023-08-03 16:04:16,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 96.27272727272727) internal successors, (2118), 22 states have internal predecessors, (2118), 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 16:04:16,404 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:16,404 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] [2023-08-03 16:04:16,411 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 16:04:16,609 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:16,609 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:16,609 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:16,609 INFO L85 PathProgramCache]: Analyzing trace with hash 427642604, now seen corresponding path program 2 times [2023-08-03 16:04:16,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:16,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326094674] [2023-08-03 16:04:16,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:16,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:16,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:16,904 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:16,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:16,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326094674] [2023-08-03 16:04:16,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326094674] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:16,905 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239687602] [2023-08-03 16:04:16,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 16:04:16,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:16,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:16,907 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 16:04:16,909 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 16:04:16,982 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 16:04:16,982 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 16:04:16,983 INFO L262 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 48 conjunts are in the unsatisfiable core [2023-08-03 16:04:16,985 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:16,989 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2023-08-03 16:04:17,005 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 16:04:17,103 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-08-03 16:04:17,139 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 16:04:17,203 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 16:04:17,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:17,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:04:17,272 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_248 (Array Int Int))) (= (select (select (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#id~0#1.base| v_ArrVal_248))) (store .cse0 c_t_funThread1of2ForFork0_~p~0.base (let ((.cse1 (select .cse0 c_t_funThread1of2ForFork0_~p~0.base))) (store .cse1 c_t_funThread1of2ForFork0_~p~0.offset (+ (- 1) (select .cse1 c_t_funThread1of2ForFork0_~p~0.offset)))))) |c_ULTIMATE.start_main_~#i~0#1.base|) |c_ULTIMATE.start_main_~#i~0#1.offset|) 0)) is different from false [2023-08-03 16:04:17,294 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_248 (Array Int Int))) (= (select (select (let ((.cse0 (store (store |c_#memory_int| c_t_funThread1of2ForFork0_~p~0.base (store (select |c_#memory_int| c_t_funThread1of2ForFork0_~p~0.base) c_t_funThread1of2ForFork0_~p~0.offset (+ |c_t_funThread1of2ForFork0_#t~mem5| 1))) |c_ULTIMATE.start_main_~#id~0#1.base| v_ArrVal_248))) (store .cse0 c_t_funThread1of2ForFork0_~p~0.base (let ((.cse1 (select .cse0 c_t_funThread1of2ForFork0_~p~0.base))) (store .cse1 c_t_funThread1of2ForFork0_~p~0.offset (+ (- 1) (select .cse1 c_t_funThread1of2ForFork0_~p~0.offset)))))) |c_ULTIMATE.start_main_~#i~0#1.base|) |c_ULTIMATE.start_main_~#i~0#1.offset|) 0)) is different from false [2023-08-03 16:04:17,339 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_248 (Array Int Int))) (= (select (select (let ((.cse0 (store (store |c_#memory_int| c_t_funThread1of2ForFork0_~p~0.base (let ((.cse2 (select |c_#memory_int| c_t_funThread1of2ForFork0_~p~0.base))) (store .cse2 c_t_funThread1of2ForFork0_~p~0.offset (+ (select .cse2 c_t_funThread1of2ForFork0_~p~0.offset) 1)))) |c_ULTIMATE.start_main_~#id~0#1.base| v_ArrVal_248))) (store .cse0 c_t_funThread1of2ForFork0_~p~0.base (let ((.cse1 (select .cse0 c_t_funThread1of2ForFork0_~p~0.base))) (store .cse1 c_t_funThread1of2ForFork0_~p~0.offset (+ (- 1) (select .cse1 c_t_funThread1of2ForFork0_~p~0.offset)))))) |c_ULTIMATE.start_main_~#i~0#1.base|) |c_ULTIMATE.start_main_~#i~0#1.offset|) 0)) is different from false [2023-08-03 16:04:17,350 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_248 (Array Int Int))) (= (select (select (let ((.cse0 (store (store |c_#memory_int| |c_t_funThread1of2ForFork0_#in~arg.base| (let ((.cse2 (select |c_#memory_int| |c_t_funThread1of2ForFork0_#in~arg.base|))) (store .cse2 |c_t_funThread1of2ForFork0_#in~arg.offset| (+ (select .cse2 |c_t_funThread1of2ForFork0_#in~arg.offset|) 1)))) |c_ULTIMATE.start_main_~#id~0#1.base| v_ArrVal_248))) (store .cse0 |c_t_funThread1of2ForFork0_#in~arg.base| (let ((.cse1 (select .cse0 |c_t_funThread1of2ForFork0_#in~arg.base|))) (store .cse1 |c_t_funThread1of2ForFork0_#in~arg.offset| (+ (- 1) (select .cse1 |c_t_funThread1of2ForFork0_#in~arg.offset|)))))) |c_ULTIMATE.start_main_~#i~0#1.base|) |c_ULTIMATE.start_main_~#i~0#1.offset|) 0)) is different from false [2023-08-03 16:04:17,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2023-08-03 16:04:17,369 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239687602] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:04:17,369 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:04:17,369 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 22 [2023-08-03 16:04:17,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998098139] [2023-08-03 16:04:17,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:04:17,369 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-08-03 16:04:17,369 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:17,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-08-03 16:04:17,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=306, Unknown=4, NotChecked=156, Total=552 [2023-08-03 16:04:17,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 269 [2023-08-03 16:04:17,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 205 flow. Second operand has 24 states, 24 states have (on average 96.08333333333333) internal successors, (2306), 24 states have internal predecessors, (2306), 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 16:04:17,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:17,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 269 [2023-08-03 16:04:17,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:18,180 INFO L124 PetriNetUnfolderBase]: 96/300 cut-off events. [2023-08-03 16:04:18,181 INFO L125 PetriNetUnfolderBase]: For 370/370 co-relation queries the response was YES. [2023-08-03 16:04:18,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 974 conditions, 300 events. 96/300 cut-off events. For 370/370 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1356 event pairs, 9 based on Foata normal form. 1/301 useless extension candidates. Maximal degree in co-relation 858. Up to 90 conditions per place. [2023-08-03 16:04:18,182 INFO L140 encePairwiseOnDemand]: 257/269 looper letters, 51 selfloop transitions, 24 changer transitions 4/84 dead transitions. [2023-08-03 16:04:18,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 84 transitions, 587 flow [2023-08-03 16:04:18,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-08-03 16:04:18,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2023-08-03 16:04:18,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1103 transitions. [2023-08-03 16:04:18,184 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3727610679283542 [2023-08-03 16:04:18,184 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1103 transitions. [2023-08-03 16:04:18,184 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1103 transitions. [2023-08-03 16:04:18,185 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:18,185 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1103 transitions. [2023-08-03 16:04:18,186 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 100.27272727272727) internal successors, (1103), 11 states have internal predecessors, (1103), 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 16:04:18,189 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 269.0) internal successors, (3228), 12 states have internal predecessors, (3228), 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 16:04:18,189 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 269.0) internal successors, (3228), 12 states have internal predecessors, (3228), 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 16:04:18,189 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 205 flow. Second operand 11 states and 1103 transitions. [2023-08-03 16:04:18,189 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 84 transitions, 587 flow [2023-08-03 16:04:18,191 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 84 transitions, 578 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 16:04:18,192 INFO L231 Difference]: Finished difference. Result has 73 places, 56 transitions, 369 flow [2023-08-03 16:04:18,192 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=197, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=369, PETRI_PLACES=73, PETRI_TRANSITIONS=56} [2023-08-03 16:04:18,192 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 29 predicate places. [2023-08-03 16:04:18,192 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 56 transitions, 369 flow [2023-08-03 16:04:18,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 96.08333333333333) internal successors, (2306), 24 states have internal predecessors, (2306), 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 16:04:18,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:18,193 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] [2023-08-03 16:04:18,198 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 16:04:18,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:18,397 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:18,398 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:18,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1536693737, now seen corresponding path program 1 times [2023-08-03 16:04:18,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:18,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562686491] [2023-08-03 16:04:18,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:18,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:18,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:18,636 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 16:04:18,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:18,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562686491] [2023-08-03 16:04:18,637 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562686491] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:18,637 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1943120089] [2023-08-03 16:04:18,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:18,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:18,637 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:18,645 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 16:04:18,680 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 16:04:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:18,736 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 44 conjunts are in the unsatisfiable core [2023-08-03 16:04:18,738 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:18,744 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2023-08-03 16:04:18,758 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 16:04:18,777 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 16:04:18,872 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-08-03 16:04:18,938 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 16:04:18,950 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 16:04:18,951 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:04:19,019 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_312 (Array Int Int))) (= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id~0#1.base| v_ArrVal_312) |c_ULTIMATE.start_main_~#i~0#1.base|) |c_ULTIMATE.start_main_~#i~0#1.offset|) 0)) is different from false [2023-08-03 16:04:19,027 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 16:04:19,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1943120089] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:04:19,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:04:19,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 5] total 18 [2023-08-03 16:04:19,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447585654] [2023-08-03 16:04:19,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:04:19,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-03 16:04:19,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:19,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-03 16:04:19,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=279, Unknown=1, NotChecked=34, Total=380 [2023-08-03 16:04:19,084 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 269 [2023-08-03 16:04:19,086 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 56 transitions, 369 flow. Second operand has 20 states, 20 states have (on average 96.6) internal successors, (1932), 20 states have internal predecessors, (1932), 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 16:04:19,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:19,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 269 [2023-08-03 16:04:19,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:19,380 INFO L124 PetriNetUnfolderBase]: 96/304 cut-off events. [2023-08-03 16:04:19,380 INFO L125 PetriNetUnfolderBase]: For 1080/1086 co-relation queries the response was YES. [2023-08-03 16:04:19,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1254 conditions, 304 events. 96/304 cut-off events. For 1080/1086 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1395 event pairs, 48 based on Foata normal form. 3/307 useless extension candidates. Maximal degree in co-relation 1111. Up to 195 conditions per place. [2023-08-03 16:04:19,382 INFO L140 encePairwiseOnDemand]: 260/269 looper letters, 58 selfloop transitions, 14 changer transitions 4/81 dead transitions. [2023-08-03 16:04:19,382 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 81 transitions, 682 flow [2023-08-03 16:04:19,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 16:04:19,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 16:04:19,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 901 transitions. [2023-08-03 16:04:19,384 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3721602643535729 [2023-08-03 16:04:19,384 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 901 transitions. [2023-08-03 16:04:19,384 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 901 transitions. [2023-08-03 16:04:19,385 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:19,385 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 901 transitions. [2023-08-03 16:04:19,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 100.11111111111111) internal successors, (901), 9 states have internal predecessors, (901), 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 16:04:19,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 269.0) internal successors, (2690), 10 states have internal predecessors, (2690), 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 16:04:19,388 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 269.0) internal successors, (2690), 10 states have internal predecessors, (2690), 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 16:04:19,388 INFO L175 Difference]: Start difference. First operand has 73 places, 56 transitions, 369 flow. Second operand 9 states and 901 transitions. [2023-08-03 16:04:19,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 81 transitions, 682 flow [2023-08-03 16:04:19,391 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 81 transitions, 635 flow, removed 10 selfloop flow, removed 6 redundant places. [2023-08-03 16:04:19,392 INFO L231 Difference]: Finished difference. Result has 81 places, 63 transitions, 426 flow [2023-08-03 16:04:19,393 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=330, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=426, PETRI_PLACES=81, PETRI_TRANSITIONS=63} [2023-08-03 16:04:19,394 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 37 predicate places. [2023-08-03 16:04:19,394 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 63 transitions, 426 flow [2023-08-03 16:04:19,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 96.6) internal successors, (1932), 20 states have internal predecessors, (1932), 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 16:04:19,396 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:19,396 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, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:19,411 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 16:04:19,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:19,600 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:19,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:19,601 INFO L85 PathProgramCache]: Analyzing trace with hash 231997235, now seen corresponding path program 1 times [2023-08-03 16:04:19,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:19,601 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1217351929] [2023-08-03 16:04:19,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:19,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:20,119 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 16:04:20,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:20,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1217351929] [2023-08-03 16:04:20,120 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1217351929] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:20,120 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1153402896] [2023-08-03 16:04:20,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:20,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:20,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:20,147 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 16:04:20,206 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 16:04:20,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:20,267 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 72 conjunts are in the unsatisfiable core [2023-08-03 16:04:20,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:20,275 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2023-08-03 16:04:20,297 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 16:04:20,359 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 16:04:20,458 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-08-03 16:04:20,601 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 16:04:20,715 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-08-03 16:04:20,798 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 16:04:20,824 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 16:04:20,825 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:04:21,125 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 16:04:21,125 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1153402896] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:04:21,125 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:04:21,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 8] total 35 [2023-08-03 16:04:21,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520179330] [2023-08-03 16:04:21,126 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:04:21,126 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2023-08-03 16:04:21,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:21,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2023-08-03 16:04:21,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=1177, Unknown=8, NotChecked=0, Total=1332 [2023-08-03 16:04:21,908 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 269 [2023-08-03 16:04:21,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 63 transitions, 426 flow. Second operand has 37 states, 37 states have (on average 90.13513513513513) internal successors, (3335), 37 states have internal predecessors, (3335), 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 16:04:21,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:04:21,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 269 [2023-08-03 16:04:21,911 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:04:23,062 INFO L124 PetriNetUnfolderBase]: 115/392 cut-off events. [2023-08-03 16:04:23,062 INFO L125 PetriNetUnfolderBase]: For 1400/1406 co-relation queries the response was YES. [2023-08-03 16:04:23,063 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1619 conditions, 392 events. 115/392 cut-off events. For 1400/1406 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1944 event pairs, 21 based on Foata normal form. 5/397 useless extension candidates. Maximal degree in co-relation 1440. Up to 121 conditions per place. [2023-08-03 16:04:23,064 INFO L140 encePairwiseOnDemand]: 254/269 looper letters, 31 selfloop transitions, 11 changer transitions 125/172 dead transitions. [2023-08-03 16:04:23,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 172 transitions, 1477 flow [2023-08-03 16:04:23,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-08-03 16:04:23,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-08-03 16:04:23,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 3677 transitions. [2023-08-03 16:04:23,083 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.341728624535316 [2023-08-03 16:04:23,083 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 3677 transitions. [2023-08-03 16:04:23,083 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 3677 transitions. [2023-08-03 16:04:23,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:04:23,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 3677 transitions. [2023-08-03 16:04:23,091 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 91.925) internal successors, (3677), 40 states have internal predecessors, (3677), 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 16:04:23,101 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 269.0) internal successors, (11029), 41 states have internal predecessors, (11029), 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 16:04:23,103 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 269.0) internal successors, (11029), 41 states have internal predecessors, (11029), 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 16:04:23,103 INFO L175 Difference]: Start difference. First operand has 81 places, 63 transitions, 426 flow. Second operand 40 states and 3677 transitions. [2023-08-03 16:04:23,103 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 172 transitions, 1477 flow [2023-08-03 16:04:23,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 172 transitions, 1469 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-03 16:04:23,108 INFO L231 Difference]: Finished difference. Result has 136 places, 40 transitions, 305 flow [2023-08-03 16:04:23,109 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=418, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=305, PETRI_PLACES=136, PETRI_TRANSITIONS=40} [2023-08-03 16:04:23,109 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 92 predicate places. [2023-08-03 16:04:23,109 INFO L495 AbstractCegarLoop]: Abstraction has has 136 places, 40 transitions, 305 flow [2023-08-03 16:04:23,110 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 90.13513513513513) internal successors, (3335), 37 states have internal predecessors, (3335), 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 16:04:23,110 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 16:04:23,111 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, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 16:04:23,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 16:04:23,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:23,315 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-03 16:04:23,316 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 16:04:23,316 INFO L85 PathProgramCache]: Analyzing trace with hash 2020768775, now seen corresponding path program 2 times [2023-08-03 16:04:23,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 16:04:23,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1084616558] [2023-08-03 16:04:23,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 16:04:23,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 16:04:23,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 16:04:23,801 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:23,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 16:04:23,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1084616558] [2023-08-03 16:04:23,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1084616558] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 16:04:23,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [98513194] [2023-08-03 16:04:23,801 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-03 16:04:23,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 16:04:23,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 16:04:23,826 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 16:04:23,827 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 16:04:23,913 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-03 16:04:23,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-03 16:04:23,915 INFO L262 TraceCheckSpWp]: Trace formula consists of 269 conjuncts, 70 conjunts are in the unsatisfiable core [2023-08-03 16:04:23,918 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 16:04:23,922 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 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 10 treesize of output 8 [2023-08-03 16:04:23,942 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 16:04:24,042 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-08-03 16:04:24,087 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 16:04:24,183 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 16:04:24,277 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2023-08-03 16:04:24,335 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 16:04:24,360 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:24,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 16:04:43,290 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 16:04:43,291 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [98513194] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 16:04:43,291 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 16:04:43,291 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 37 [2023-08-03 16:04:43,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436829670] [2023-08-03 16:04:43,291 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 16:04:43,291 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-08-03 16:04:43,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 16:04:43,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-08-03 16:04:43,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=1283, Unknown=33, NotChecked=0, Total=1482 [2023-08-03 16:04:45,334 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 16:04:47,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 16:04:49,521 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 16:04:51,615 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 16:04:53,872 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 16:04:55,918 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 16:04:57,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 16:05:00,115 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 16:05:02,312 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 16:05:04,465 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 16:05:06,603 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 16:05:08,709 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 16:05:10,888 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 16:05:12,984 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 16:05:15,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-03 16:05:15,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 269 [2023-08-03 16:05:15,090 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 40 transitions, 305 flow. Second operand has 39 states, 39 states have (on average 89.97435897435898) internal successors, (3509), 39 states have internal predecessors, (3509), 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 16:05:15,090 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 16:05:15,090 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 269 [2023-08-03 16:05:15,090 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 16:05:15,800 INFO L124 PetriNetUnfolderBase]: 47/165 cut-off events. [2023-08-03 16:05:15,800 INFO L125 PetriNetUnfolderBase]: For 1018/1022 co-relation queries the response was YES. [2023-08-03 16:05:15,801 INFO L83 FinitePrefix]: Finished finitePrefix Result has 836 conditions, 165 events. 47/165 cut-off events. For 1018/1022 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 545 event pairs, 2 based on Foata normal form. 3/168 useless extension candidates. Maximal degree in co-relation 796. Up to 52 conditions per place. [2023-08-03 16:05:15,802 INFO L140 encePairwiseOnDemand]: 255/269 looper letters, 0 selfloop transitions, 0 changer transitions 63/63 dead transitions. [2023-08-03 16:05:15,802 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 111 places, 63 transitions, 638 flow [2023-08-03 16:05:15,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-03 16:05:15,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-03 16:05:15,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 1461 transitions. [2023-08-03 16:05:15,806 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33945167286245354 [2023-08-03 16:05:15,806 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 1461 transitions. [2023-08-03 16:05:15,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 1461 transitions. [2023-08-03 16:05:15,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 16:05:15,807 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 1461 transitions. [2023-08-03 16:05:15,816 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 91.3125) internal successors, (1461), 16 states have internal predecessors, (1461), 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 16:05:15,820 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 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 16:05:15,821 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 269.0) internal successors, (4573), 17 states have internal predecessors, (4573), 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 16:05:15,821 INFO L175 Difference]: Start difference. First operand has 136 places, 40 transitions, 305 flow. Second operand 16 states and 1461 transitions. [2023-08-03 16:05:15,821 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 111 places, 63 transitions, 638 flow [2023-08-03 16:05:15,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 63 transitions, 515 flow, removed 21 selfloop flow, removed 36 redundant places. [2023-08-03 16:05:15,824 INFO L231 Difference]: Finished difference. Result has 75 places, 0 transitions, 0 flow [2023-08-03 16:05:15,824 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=194, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=0, PETRI_PLACES=75, PETRI_TRANSITIONS=0} [2023-08-03 16:05:15,824 INFO L281 CegarLoopForPetriNet]: 44 programPoint places, 31 predicate places. [2023-08-03 16:05:15,825 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 0 transitions, 0 flow [2023-08-03 16:05:15,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 89.97435897435898) internal successors, (3509), 39 states have internal predecessors, (3509), 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 16:05:15,825 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2023-08-03 16:05:15,826 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-03 16:05:15,837 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 16:05:16,031 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 16:05:16,031 INFO L445 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 16:05:16,033 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 16:05:16,033 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 16:05:16,035 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 04:05:16 BasicIcfg [2023-08-03 16:05:16,035 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 16:05:16,040 INFO L158 Benchmark]: Toolchain (without parser) took 69883.60ms. Allocated memory was 742.4MB in the beginning and 924.8MB in the end (delta: 182.5MB). Free memory was 702.7MB in the beginning and 866.5MB in the end (delta: -163.9MB). Peak memory consumption was 545.8MB. Max. memory is 16.0GB. [2023-08-03 16:05:16,040 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 398.5MB. Free memory is still 350.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 16:05:16,040 INFO L158 Benchmark]: CACSL2BoogieTranslator took 357.59ms. Allocated memory is still 742.4MB. Free memory was 702.7MB in the beginning and 682.7MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 16:05:16,041 INFO L158 Benchmark]: Boogie Procedure Inliner took 51.24ms. Allocated memory is still 742.4MB. Free memory was 682.7MB in the beginning and 680.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:05:16,041 INFO L158 Benchmark]: Boogie Preprocessor took 30.41ms. Allocated memory is still 742.4MB. Free memory was 680.6MB in the beginning and 679.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 16:05:16,041 INFO L158 Benchmark]: RCFGBuilder took 317.96ms. Allocated memory is still 742.4MB. Free memory was 679.0MB in the beginning and 663.6MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 16:05:16,041 INFO L158 Benchmark]: TraceAbstraction took 69122.52ms. Allocated memory was 742.4MB in the beginning and 924.8MB in the end (delta: 182.5MB). Free memory was 662.9MB in the beginning and 866.5MB in the end (delta: -203.7MB). Peak memory consumption was 505.9MB. Max. memory is 16.0GB. [2023-08-03 16:05:16,042 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 398.5MB. Free memory is still 350.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 357.59ms. Allocated memory is still 742.4MB. Free memory was 702.7MB in the beginning and 682.7MB in the end (delta: 20.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 51.24ms. Allocated memory is still 742.4MB. Free memory was 682.7MB in the beginning and 680.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.41ms. Allocated memory is still 742.4MB. Free memory was 680.6MB in the beginning and 679.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 317.96ms. Allocated memory is still 742.4MB. Free memory was 679.0MB in the beginning and 663.6MB in the end (delta: 15.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 69122.52ms. Allocated memory was 742.4MB in the beginning and 924.8MB in the end (delta: 182.5MB). Free memory was 662.9MB in the beginning and 866.5MB in the end (delta: -203.7MB). Peak memory consumption was 505.9MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] - GenericResultAtLocation [Line: 244]: Unsoundness Warning unspecified type, defaulting to int C: short [244] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.5s, 105 PlacesBefore, 27 PlacesAfterwards, 113 TransitionsBefore, 32 TransitionsAfterwards, 2838 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 3 ChoiceCompositions, 96 TotalNumberOfCompositions, 4947 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2831, independent: 2668, independent conditional: 0, independent unconditional: 2668, dependent: 163, dependent conditional: 0, dependent unconditional: 163, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1553, independent: 1517, independent conditional: 0, independent unconditional: 1517, dependent: 36, dependent conditional: 0, dependent unconditional: 36, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2831, independent: 1151, independent conditional: 0, independent unconditional: 1151, dependent: 127, dependent conditional: 0, dependent unconditional: 127, unknown: 1553, unknown conditional: 0, unknown unconditional: 1553] , Statistics on independence cache: Total cache size (in pairs): 88, Positive cache size: 70, Positive conditional cache size: 0, Positive unconditional cache size: 70, Negative cache size: 18, Negative conditional cache size: 0, Negative unconditional cache size: 18, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 139 PlacesBefore, 44 PlacesAfterwards, 153 TransitionsBefore, 55 TransitionsAfterwards, 8580 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 61 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 17 ConcurrentYvCompositions, 3 ChoiceCompositions, 116 TotalNumberOfCompositions, 17084 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 8353, independent: 8075, independent conditional: 0, independent unconditional: 8075, dependent: 278, dependent conditional: 0, dependent unconditional: 278, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 4313, independent: 4255, independent conditional: 0, independent unconditional: 4255, dependent: 58, dependent conditional: 0, dependent unconditional: 58, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 8353, independent: 3820, independent conditional: 0, independent unconditional: 3820, dependent: 220, dependent conditional: 0, dependent unconditional: 220, unknown: 4313, unknown conditional: 0, unknown unconditional: 4313] , Statistics on independence cache: Total cache size (in pairs): 296, Positive cache size: 270, Positive conditional cache size: 0, Positive unconditional cache size: 270, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 691]: 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, 135 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.0s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 29 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 7 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 48 IncrementalHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 7 mSDtfsCounter, 48 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 3 ConstructedInterpolants, 0 QuantifiedInterpolants, 5 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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, 163 locations, 2 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 66.0s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 37.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: 42 mSolverCounterUnknown, 1396 SdHoareTripleChecker+Valid, 34.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1224 mSDsluCounter, 1924 SdHoareTripleChecker+Invalid, 33.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 530 IncrementalHoareTripleChecker+Unchecked, 1923 mSDsCounter, 117 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 7969 IncrementalHoareTripleChecker+Invalid, 8658 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 117 mSolverCounterUnsat, 1 mSDtfsCounter, 7969 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 432 GetRequests, 227 SyntacticMatches, 17 SemanticMatches, 188 ConstructedPredicates, 7 IntricatePredicates, 2 DeprecatedPredicates, 1990 ImplicationChecksByTransitivity, 21.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=426occurred in iteration=8, InterpolantAutomatonStates: 106, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 23.5s InterpolantComputationTime, 357 NumberOfCodeBlocks, 357 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 489 ConstructedInterpolants, 40 QuantifiedInterpolants, 7012 SizeOfPredicates, 56 NumberOfNonLiveVariables, 1594 ConjunctsInSsa, 301 ConjunctsInUnsatCore, 25 InterpolantComputations, 3 PerfectInterpolantSequences, 29/133 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 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 16:05:16,075 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...