/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-ac9dbd0-m [2023-08-24 14:39:16,749 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-24 14:39:16,810 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-08-24 14:39:16,821 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-24 14:39:16,821 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-24 14:39:16,855 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-24 14:39:16,856 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-24 14:39:16,857 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-24 14:39:16,857 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-24 14:39:16,862 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-24 14:39:16,862 INFO L153 SettingsManager]: * Use SBE=true [2023-08-24 14:39:16,863 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-24 14:39:16,863 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-24 14:39:16,864 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-24 14:39:16,864 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-24 14:39:16,865 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-24 14:39:16,865 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-24 14:39:16,865 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-24 14:39:16,865 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-24 14:39:16,865 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-24 14:39:16,866 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-24 14:39:16,867 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-24 14:39:16,867 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-24 14:39:16,867 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-24 14:39:16,868 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-24 14:39:16,868 INFO L153 SettingsManager]: * To the following directory=./dump/ [2023-08-24 14:39:16,868 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-24 14:39:16,868 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 14:39:16,869 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-24 14:39:16,869 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-24 14:39:16,870 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-24 14:39:16,870 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-24 14:39:16,870 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-24 14:39:16,870 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-24 14:39:16,870 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-24 14:39:16,871 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-24 14:39:17,165 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-24 14:39:17,190 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-24 14:39:17,192 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-24 14:39:17,193 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-24 14:39:17,196 INFO L274 PluginConnector]: CDTParser initialized [2023-08-24 14:39:17,197 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2023-08-24 14:39:18,353 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-24 14:39:18,546 INFO L384 CDTParser]: Found 1 translation units. [2023-08-24 14:39:18,546 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c [2023-08-24 14:39:18,554 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6605deac/54c9e042b68a4d8da8cc7db4f6224880/FLAGca5fc788b [2023-08-24 14:39:18,573 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a6605deac/54c9e042b68a4d8da8cc7db4f6224880 [2023-08-24 14:39:18,578 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-24 14:39:18,581 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-24 14:39:18,582 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-24 14:39:18,582 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-24 14:39:18,585 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-24 14:39:18,586 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 02:39:18" (1/1) ... [2023-08-24 14:39:18,587 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@337f96b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:39:18, skipping insertion in model container [2023-08-24 14:39:18,587 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.08 02:39:18" (1/1) ... [2023-08-24 14:39:18,618 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-24 14:39:18,800 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2023-08-24 14:39:18,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 14:39:18,821 INFO L201 MainTranslator]: Completed pre-run [2023-08-24 14:39:18,852 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/parallel-parallel-sum-equiv.wvr.c[3770,3783] [2023-08-24 14:39:18,855 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-24 14:39:18,862 WARN L669 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 14:39:18,862 WARN L669 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-24 14:39:18,867 INFO L206 MainTranslator]: Completed translation [2023-08-24 14:39:18,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:39:18 WrapperNode [2023-08-24 14:39:18,868 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-24 14:39:18,869 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-24 14:39:18,869 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-24 14:39:18,869 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-24 14:39:18,874 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:39:18" (1/1) ... [2023-08-24 14:39:18,886 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:39:18" (1/1) ... [2023-08-24 14:39:18,922 INFO L138 Inliner]: procedures = 27, calls = 73, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 258 [2023-08-24 14:39:18,922 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-24 14:39:18,923 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-24 14:39:18,923 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-24 14:39:18,923 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-24 14:39:18,931 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:39:18" (1/1) ... [2023-08-24 14:39:18,931 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:39:18" (1/1) ... [2023-08-24 14:39:18,947 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:39:18" (1/1) ... [2023-08-24 14:39:18,948 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:39:18" (1/1) ... [2023-08-24 14:39:18,954 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:39:18" (1/1) ... [2023-08-24 14:39:18,957 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:39:18" (1/1) ... [2023-08-24 14:39:18,959 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:39:18" (1/1) ... [2023-08-24 14:39:18,973 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:39:18" (1/1) ... [2023-08-24 14:39:18,979 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-24 14:39:18,979 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-24 14:39:18,980 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-24 14:39:18,980 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-24 14:39:18,980 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:39:18" (1/1) ... [2023-08-24 14:39:18,985 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-24 14:39:19,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:39:19,013 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) [2023-08-24 14:39:19,043 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 [2023-08-24 14:39:19,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-24 14:39:19,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-24 14:39:19,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-24 14:39:19,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-24 14:39:19,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-24 14:39:19,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-24 14:39:19,057 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-24 14:39:19,057 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-24 14:39:19,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-24 14:39:19,058 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-24 14:39:19,058 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-24 14:39:19,058 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-24 14:39:19,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-24 14:39:19,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-24 14:39:19,058 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-24 14:39:19,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-24 14:39:19,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-24 14:39:19,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-24 14:39:19,061 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-24 14:39:19,062 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-24 14:39:19,179 INFO L236 CfgBuilder]: Building ICFG [2023-08-24 14:39:19,180 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-24 14:39:19,634 INFO L277 CfgBuilder]: Performing block encoding [2023-08-24 14:39:19,806 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-24 14:39:19,806 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-24 14:39:19,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 02:39:19 BoogieIcfgContainer [2023-08-24 14:39:19,809 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-24 14:39:19,812 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-24 14:39:19,812 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-24 14:39:19,815 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-24 14:39:19,815 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.08 02:39:18" (1/3) ... [2023-08-24 14:39:19,816 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459fb1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 02:39:19, skipping insertion in model container [2023-08-24 14:39:19,816 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.08 02:39:18" (2/3) ... [2023-08-24 14:39:19,817 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459fb1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.08 02:39:19, skipping insertion in model container [2023-08-24 14:39:19,817 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.08 02:39:19" (3/3) ... [2023-08-24 14:39:19,818 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-parallel-sum-equiv.wvr.c [2023-08-24 14:39:19,838 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-24 14:39:19,839 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-24 14:39:19,839 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-24 14:39:19,935 INFO L144 ThreadInstanceAdder]: Constructed 10 joinOtherThreadTransitions. [2023-08-24 14:39:19,975 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 205 places, 206 transitions, 456 flow [2023-08-24 14:39:20,087 INFO L124 PetriNetUnfolderBase]: 14/191 cut-off events. [2023-08-24 14:39:20,088 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 14:39:20,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 210 conditions, 191 events. 14/191 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 181 event pairs, 0 based on Foata normal form. 0/176 useless extension candidates. Maximal degree in co-relation 164. Up to 3 conditions per place. [2023-08-24 14:39:20,097 INFO L82 GeneralOperation]: Start removeDead. Operand has 205 places, 206 transitions, 456 flow [2023-08-24 14:39:20,104 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 182 places, 183 transitions, 396 flow [2023-08-24 14:39:20,107 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-24 14:39:20,139 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 182 places, 183 transitions, 396 flow [2023-08-24 14:39:20,141 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 182 places, 183 transitions, 396 flow [2023-08-24 14:39:20,142 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 182 places, 183 transitions, 396 flow [2023-08-24 14:39:20,204 INFO L124 PetriNetUnfolderBase]: 14/183 cut-off events. [2023-08-24 14:39:20,204 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 14:39:20,205 INFO L83 FinitePrefix]: Finished finitePrefix Result has 202 conditions, 183 events. 14/183 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 180 event pairs, 0 based on Foata normal form. 0/169 useless extension candidates. Maximal degree in co-relation 164. Up to 3 conditions per place. [2023-08-24 14:39:20,207 INFO L119 LiptonReduction]: Number of co-enabled transitions 2880 [2023-08-24 14:39:25,970 INFO L134 LiptonReduction]: Checked pairs total: 7194 [2023-08-24 14:39:25,970 INFO L136 LiptonReduction]: Total number of compositions: 168 [2023-08-24 14:39:25,982 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-24 14:39:25,988 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=false, 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;@72917998, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-24 14:39:25,988 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-24 14:39:25,996 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-24 14:39:25,996 INFO L124 PetriNetUnfolderBase]: 6/38 cut-off events. [2023-08-24 14:39:25,996 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-24 14:39:25,996 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:39:25,997 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1] [2023-08-24 14:39:25,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:39:26,001 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:39:26,002 INFO L85 PathProgramCache]: Analyzing trace with hash 155093609, now seen corresponding path program 1 times [2023-08-24 14:39:26,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:39:26,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93012781] [2023-08-24 14:39:26,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:39:26,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:39:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:39:26,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:39:26,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:39:26,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93012781] [2023-08-24 14:39:26,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93012781] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:39:26,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:39:26,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 14:39:26,493 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117651648] [2023-08-24 14:39:26,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:39:26,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 14:39:26,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:39:26,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 14:39:26,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 14:39:26,534 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 376 [2023-08-24 14:39:26,539 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 39 transitions, 108 flow. Second operand has 4 states, 4 states have (on average 174.5) internal successors, (698), 4 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:26,539 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:39:26,539 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 376 [2023-08-24 14:39:26,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:39:26,941 INFO L124 PetriNetUnfolderBase]: 1658/2389 cut-off events. [2023-08-24 14:39:26,941 INFO L125 PetriNetUnfolderBase]: For 329/333 co-relation queries the response was YES. [2023-08-24 14:39:26,949 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5113 conditions, 2389 events. 1658/2389 cut-off events. For 329/333 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 9958 event pairs, 523 based on Foata normal form. 2/1790 useless extension candidates. Maximal degree in co-relation 5012. Up to 1081 conditions per place. [2023-08-24 14:39:26,962 INFO L140 encePairwiseOnDemand]: 370/376 looper letters, 67 selfloop transitions, 7 changer transitions 1/84 dead transitions. [2023-08-24 14:39:26,962 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 84 transitions, 396 flow [2023-08-24 14:39:26,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 14:39:26,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 14:39:26,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 752 transitions. [2023-08-24 14:39:26,983 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5 [2023-08-24 14:39:26,984 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 752 transitions. [2023-08-24 14:39:26,984 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 752 transitions. [2023-08-24 14:39:26,988 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:39:26,990 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 752 transitions. [2023-08-24 14:39:26,995 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 188.0) internal successors, (752), 4 states have internal predecessors, (752), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:27,001 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 376.0) internal successors, (1880), 5 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:27,003 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 376.0) internal successors, (1880), 5 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:27,004 INFO L175 Difference]: Start difference. First operand has 46 places, 39 transitions, 108 flow. Second operand 4 states and 752 transitions. [2023-08-24 14:39:27,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 84 transitions, 396 flow [2023-08-24 14:39:27,015 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 84 transitions, 344 flow, removed 0 selfloop flow, removed 8 redundant places. [2023-08-24 14:39:27,017 INFO L231 Difference]: Finished difference. Result has 43 places, 45 transitions, 133 flow [2023-08-24 14:39:27,018 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=133, PETRI_PLACES=43, PETRI_TRANSITIONS=45} [2023-08-24 14:39:27,022 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, -3 predicate places. [2023-08-24 14:39:27,023 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 45 transitions, 133 flow [2023-08-24 14:39:27,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.5) internal successors, (698), 4 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:27,023 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:39:27,024 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1] [2023-08-24 14:39:27,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-24 14:39:27,024 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:39:27,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:39:27,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1938094997, now seen corresponding path program 2 times [2023-08-24 14:39:27,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:39:27,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931891265] [2023-08-24 14:39:27,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:39:27,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:39:27,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:39:27,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:39:27,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:39:27,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931891265] [2023-08-24 14:39:27,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931891265] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:39:27,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:39:27,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-24 14:39:27,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721515178] [2023-08-24 14:39:27,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:39:27,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-24 14:39:27,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:39:27,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-24 14:39:27,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-24 14:39:27,259 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 169 out of 376 [2023-08-24 14:39:27,260 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 45 transitions, 133 flow. Second operand has 4 states, 4 states have (on average 174.5) internal successors, (698), 4 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:27,260 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:39:27,260 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 169 of 376 [2023-08-24 14:39:27,260 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:39:27,715 INFO L124 PetriNetUnfolderBase]: 2346/3400 cut-off events. [2023-08-24 14:39:27,716 INFO L125 PetriNetUnfolderBase]: For 785/785 co-relation queries the response was YES. [2023-08-24 14:39:27,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8019 conditions, 3400 events. 2346/3400 cut-off events. For 785/785 co-relation queries the response was YES. Maximal size of possible extension queue 154. Compared 15139 event pairs, 975 based on Foata normal form. 1/2824 useless extension candidates. Maximal degree in co-relation 3911. Up to 1875 conditions per place. [2023-08-24 14:39:27,737 INFO L140 encePairwiseOnDemand]: 370/376 looper letters, 71 selfloop transitions, 8 changer transitions 1/89 dead transitions. [2023-08-24 14:39:27,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 89 transitions, 416 flow [2023-08-24 14:39:27,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-24 14:39:27,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-24 14:39:27,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 751 transitions. [2023-08-24 14:39:27,740 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49933510638297873 [2023-08-24 14:39:27,740 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 751 transitions. [2023-08-24 14:39:27,740 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 751 transitions. [2023-08-24 14:39:27,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:39:27,741 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 751 transitions. [2023-08-24 14:39:27,742 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 187.75) internal successors, (751), 4 states have internal predecessors, (751), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:27,745 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 376.0) internal successors, (1880), 5 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:27,746 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 376.0) internal successors, (1880), 5 states have internal predecessors, (1880), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:27,746 INFO L175 Difference]: Start difference. First operand has 43 places, 45 transitions, 133 flow. Second operand 4 states and 751 transitions. [2023-08-24 14:39:27,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 89 transitions, 416 flow [2023-08-24 14:39:27,750 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 89 transitions, 416 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-24 14:39:27,751 INFO L231 Difference]: Finished difference. Result has 48 places, 50 transitions, 193 flow [2023-08-24 14:39:27,753 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=193, PETRI_PLACES=48, PETRI_TRANSITIONS=50} [2023-08-24 14:39:27,755 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 2 predicate places. [2023-08-24 14:39:27,756 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 50 transitions, 193 flow [2023-08-24 14:39:27,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 174.5) internal successors, (698), 4 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:27,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:39:27,761 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1] [2023-08-24 14:39:27,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-24 14:39:27,761 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:39:27,764 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:39:27,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1012822075, now seen corresponding path program 1 times [2023-08-24 14:39:27,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:39:27,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4210271] [2023-08-24 14:39:27,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:39:27,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:39:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:39:27,924 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:39:27,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:39:27,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4210271] [2023-08-24 14:39:27,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4210271] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:39:27,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:39:27,925 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 14:39:27,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376900947] [2023-08-24 14:39:27,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:39:27,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 14:39:27,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:39:27,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 14:39:27,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-24 14:39:27,927 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 376 [2023-08-24 14:39:27,928 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 50 transitions, 193 flow. Second operand has 5 states, 5 states have (on average 160.6) internal successors, (803), 5 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:27,928 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:39:27,928 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 376 [2023-08-24 14:39:27,928 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:39:28,498 INFO L124 PetriNetUnfolderBase]: 3817/5653 cut-off events. [2023-08-24 14:39:28,499 INFO L125 PetriNetUnfolderBase]: For 4516/4516 co-relation queries the response was YES. [2023-08-24 14:39:28,506 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14372 conditions, 5653 events. 3817/5653 cut-off events. For 4516/4516 co-relation queries the response was YES. Maximal size of possible extension queue 241. Compared 28479 event pairs, 2160 based on Foata normal form. 186/4862 useless extension candidates. Maximal degree in co-relation 8344. Up to 3221 conditions per place. [2023-08-24 14:39:28,533 INFO L140 encePairwiseOnDemand]: 371/376 looper letters, 90 selfloop transitions, 5 changer transitions 0/104 dead transitions. [2023-08-24 14:39:28,533 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 104 transitions, 574 flow [2023-08-24 14:39:28,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-24 14:39:28,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-24 14:39:28,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 858 transitions. [2023-08-24 14:39:28,536 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4563829787234043 [2023-08-24 14:39:28,536 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 858 transitions. [2023-08-24 14:39:28,536 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 858 transitions. [2023-08-24 14:39:28,537 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:39:28,537 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 858 transitions. [2023-08-24 14:39:28,538 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 171.6) internal successors, (858), 5 states have internal predecessors, (858), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:28,541 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 376.0) internal successors, (2256), 6 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:28,542 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 376.0) internal successors, (2256), 6 states have internal predecessors, (2256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:28,542 INFO L175 Difference]: Start difference. First operand has 48 places, 50 transitions, 193 flow. Second operand 5 states and 858 transitions. [2023-08-24 14:39:28,542 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 104 transitions, 574 flow [2023-08-24 14:39:28,547 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 104 transitions, 572 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-24 14:39:28,549 INFO L231 Difference]: Finished difference. Result has 55 places, 54 transitions, 243 flow [2023-08-24 14:39:28,549 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=191, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=243, PETRI_PLACES=55, PETRI_TRANSITIONS=54} [2023-08-24 14:39:28,549 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 9 predicate places. [2023-08-24 14:39:28,550 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 54 transitions, 243 flow [2023-08-24 14:39:28,550 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 160.6) internal successors, (803), 5 states have internal predecessors, (803), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:28,550 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:39:28,550 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1] [2023-08-24 14:39:28,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-24 14:39:28,551 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:39:28,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:39:28,551 INFO L85 PathProgramCache]: Analyzing trace with hash 269927606, now seen corresponding path program 1 times [2023-08-24 14:39:28,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:39:28,552 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853475482] [2023-08-24 14:39:28,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:39:28,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:39:28,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:39:28,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:39:28,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:39:28,746 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853475482] [2023-08-24 14:39:28,746 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853475482] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-24 14:39:28,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-24 14:39:28,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-24 14:39:28,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284468217] [2023-08-24 14:39:28,747 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:39:28,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-24 14:39:28,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:39:28,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-24 14:39:28,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-24 14:39:28,751 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 376 [2023-08-24 14:39:28,752 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 54 transitions, 243 flow. Second operand has 5 states, 5 states have (on average 160.8) internal successors, (804), 5 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:28,752 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:39:28,752 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 376 [2023-08-24 14:39:28,752 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:39:29,177 INFO L124 PetriNetUnfolderBase]: 2563/3979 cut-off events. [2023-08-24 14:39:29,177 INFO L125 PetriNetUnfolderBase]: For 4602/4602 co-relation queries the response was YES. [2023-08-24 14:39:29,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10445 conditions, 3979 events. 2563/3979 cut-off events. For 4602/4602 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 20360 event pairs, 893 based on Foata normal form. 0/3500 useless extension candidates. Maximal degree in co-relation 8909. Up to 1744 conditions per place. [2023-08-24 14:39:29,203 INFO L140 encePairwiseOnDemand]: 368/376 looper letters, 61 selfloop transitions, 4 changer transitions 28/102 dead transitions. [2023-08-24 14:39:29,203 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 102 transitions, 625 flow [2023-08-24 14:39:29,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 14:39:29,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 14:39:29,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1011 transitions. [2023-08-24 14:39:29,206 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44813829787234044 [2023-08-24 14:39:29,206 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1011 transitions. [2023-08-24 14:39:29,206 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1011 transitions. [2023-08-24 14:39:29,207 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:39:29,207 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1011 transitions. [2023-08-24 14:39:29,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 168.5) internal successors, (1011), 6 states have internal predecessors, (1011), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:29,212 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 376.0) internal successors, (2632), 7 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:29,213 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 376.0) internal successors, (2632), 7 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:29,213 INFO L175 Difference]: Start difference. First operand has 55 places, 54 transitions, 243 flow. Second operand 6 states and 1011 transitions. [2023-08-24 14:39:29,214 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 102 transitions, 625 flow [2023-08-24 14:39:29,218 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 102 transitions, 621 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-24 14:39:29,220 INFO L231 Difference]: Finished difference. Result has 63 places, 53 transitions, 243 flow [2023-08-24 14:39:29,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=239, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=243, PETRI_PLACES=63, PETRI_TRANSITIONS=53} [2023-08-24 14:39:29,222 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 17 predicate places. [2023-08-24 14:39:29,222 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 53 transitions, 243 flow [2023-08-24 14:39:29,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 160.8) internal successors, (804), 5 states have internal predecessors, (804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:29,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:39:29,224 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1] [2023-08-24 14:39:29,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-24 14:39:29,224 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:39:29,224 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:39:29,224 INFO L85 PathProgramCache]: Analyzing trace with hash 854941812, now seen corresponding path program 1 times [2023-08-24 14:39:29,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:39:29,225 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048312178] [2023-08-24 14:39:29,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:39:29,225 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:39:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:39:29,384 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:39:29,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:39:29,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048312178] [2023-08-24 14:39:29,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048312178] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:39:29,385 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939827069] [2023-08-24 14:39:29,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:39:29,385 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:39:29,385 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:39:29,393 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) [2023-08-24 14:39:29,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-24 14:39:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:39:29,548 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 7 conjunts are in the unsatisfiable core [2023-08-24 14:39:29,554 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:39:29,648 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:39:29,648 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:39:29,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:39:29,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939827069] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:39:29,705 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:39:29,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-24 14:39:29,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352205355] [2023-08-24 14:39:29,705 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:39:29,705 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 14:39:29,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:39:29,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 14:39:29,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-08-24 14:39:29,708 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 376 [2023-08-24 14:39:29,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 53 transitions, 243 flow. Second operand has 12 states, 12 states have (on average 159.0) internal successors, (1908), 12 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:29,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:39:29,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 376 [2023-08-24 14:39:29,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:39:30,446 INFO L124 PetriNetUnfolderBase]: 3577/5380 cut-off events. [2023-08-24 14:39:30,446 INFO L125 PetriNetUnfolderBase]: For 8905/8905 co-relation queries the response was YES. [2023-08-24 14:39:30,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16427 conditions, 5380 events. 3577/5380 cut-off events. For 8905/8905 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 28157 event pairs, 1264 based on Foata normal form. 186/5319 useless extension candidates. Maximal degree in co-relation 12564. Up to 1953 conditions per place. [2023-08-24 14:39:30,484 INFO L140 encePairwiseOnDemand]: 370/376 looper letters, 123 selfloop transitions, 7 changer transitions 0/139 dead transitions. [2023-08-24 14:39:30,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 139 transitions, 887 flow [2023-08-24 14:39:30,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 14:39:30,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 14:39:30,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1190 transitions. [2023-08-24 14:39:30,488 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4521276595744681 [2023-08-24 14:39:30,489 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1190 transitions. [2023-08-24 14:39:30,489 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1190 transitions. [2023-08-24 14:39:30,489 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:39:30,490 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1190 transitions. [2023-08-24 14:39:30,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 170.0) internal successors, (1190), 7 states have internal predecessors, (1190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:30,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:30,498 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:30,498 INFO L175 Difference]: Start difference. First operand has 63 places, 53 transitions, 243 flow. Second operand 7 states and 1190 transitions. [2023-08-24 14:39:30,498 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 139 transitions, 887 flow [2023-08-24 14:39:30,511 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 139 transitions, 843 flow, removed 21 selfloop flow, removed 5 redundant places. [2023-08-24 14:39:30,514 INFO L231 Difference]: Finished difference. Result has 64 places, 58 transitions, 290 flow [2023-08-24 14:39:30,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=223, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=290, PETRI_PLACES=64, PETRI_TRANSITIONS=58} [2023-08-24 14:39:30,516 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 18 predicate places. [2023-08-24 14:39:30,516 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 58 transitions, 290 flow [2023-08-24 14:39:30,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 159.0) internal successors, (1908), 12 states have internal predecessors, (1908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:30,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:39:30,517 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-08-24 14:39:30,525 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-24 14:39:30,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:39:30,723 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:39:30,723 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:39:30,723 INFO L85 PathProgramCache]: Analyzing trace with hash -2069855703, now seen corresponding path program 1 times [2023-08-24 14:39:30,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:39:30,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901509253] [2023-08-24 14:39:30,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:39:30,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:39:30,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:39:30,939 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:39:30,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:39:30,941 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901509253] [2023-08-24 14:39:30,942 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901509253] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:39:30,942 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2101552967] [2023-08-24 14:39:30,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:39:30,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:39:30,943 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:39:30,944 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) [2023-08-24 14:39:30,960 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-24 14:39:31,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:39:31,076 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 13 conjunts are in the unsatisfiable core [2023-08-24 14:39:31,078 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:39:31,171 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:39:31,171 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:39:31,226 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:39:31,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2101552967] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:39:31,226 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:39:31,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-24 14:39:31,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980909564] [2023-08-24 14:39:31,227 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:39:31,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 14:39:31,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:39:31,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 14:39:31,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2023-08-24 14:39:31,231 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 376 [2023-08-24 14:39:31,233 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 58 transitions, 290 flow. Second operand has 12 states, 12 states have (on average 159.25) internal successors, (1911), 12 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:31,233 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:39:31,233 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 376 [2023-08-24 14:39:31,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:39:31,752 INFO L124 PetriNetUnfolderBase]: 2563/4002 cut-off events. [2023-08-24 14:39:31,752 INFO L125 PetriNetUnfolderBase]: For 6184/6184 co-relation queries the response was YES. [2023-08-24 14:39:31,758 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12359 conditions, 4002 events. 2563/4002 cut-off events. For 6184/6184 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 20447 event pairs, 831 based on Foata normal form. 72/3874 useless extension candidates. Maximal degree in co-relation 10519. Up to 1744 conditions per place. [2023-08-24 14:39:31,770 INFO L140 encePairwiseOnDemand]: 368/376 looper letters, 61 selfloop transitions, 5 changer transitions 30/105 dead transitions. [2023-08-24 14:39:31,771 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 105 transitions, 693 flow [2023-08-24 14:39:31,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 14:39:31,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 14:39:31,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1166 transitions. [2023-08-24 14:39:31,774 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4430091185410334 [2023-08-24 14:39:31,774 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1166 transitions. [2023-08-24 14:39:31,775 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1166 transitions. [2023-08-24 14:39:31,775 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:39:31,775 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1166 transitions. [2023-08-24 14:39:31,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 166.57142857142858) internal successors, (1166), 7 states have internal predecessors, (1166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:31,780 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:31,781 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:31,781 INFO L175 Difference]: Start difference. First operand has 64 places, 58 transitions, 290 flow. Second operand 7 states and 1166 transitions. [2023-08-24 14:39:31,781 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 105 transitions, 693 flow [2023-08-24 14:39:31,786 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 105 transitions, 685 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-24 14:39:31,788 INFO L231 Difference]: Finished difference. Result has 71 places, 54 transitions, 266 flow [2023-08-24 14:39:31,788 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=282, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=266, PETRI_PLACES=71, PETRI_TRANSITIONS=54} [2023-08-24 14:39:31,790 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 25 predicate places. [2023-08-24 14:39:31,790 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 54 transitions, 266 flow [2023-08-24 14:39:31,791 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 159.25) internal successors, (1911), 12 states have internal predecessors, (1911), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:31,791 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:39:31,791 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1] [2023-08-24 14:39:31,807 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-24 14:39:31,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-08-24 14:39:31,998 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:39:31,998 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:39:31,998 INFO L85 PathProgramCache]: Analyzing trace with hash 169118781, now seen corresponding path program 2 times [2023-08-24 14:39:31,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:39:31,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573896390] [2023-08-24 14:39:31,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:39:31,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:39:32,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:39:32,220 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:39:32,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:39:32,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573896390] [2023-08-24 14:39:32,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573896390] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:39:32,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475804404] [2023-08-24 14:39:32,221 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 14:39:32,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:39:32,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:39:32,222 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) [2023-08-24 14:39:32,228 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-24 14:39:32,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 14:39:32,350 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 14:39:32,352 INFO L262 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-24 14:39:32,354 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:39:32,427 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:39:32,427 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:39:32,483 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:39:32,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475804404] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:39:32,483 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:39:32,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-08-24 14:39:32,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096612582] [2023-08-24 14:39:32,484 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:39:32,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-08-24 14:39:32,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:39:32,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-08-24 14:39:32,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2023-08-24 14:39:32,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 376 [2023-08-24 14:39:32,489 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 54 transitions, 266 flow. Second operand has 12 states, 12 states have (on average 159.41666666666666) internal successors, (1913), 12 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:32,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:39:32,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 376 [2023-08-24 14:39:32,489 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:39:32,874 INFO L124 PetriNetUnfolderBase]: 1740/2582 cut-off events. [2023-08-24 14:39:32,874 INFO L125 PetriNetUnfolderBase]: For 5351/5351 co-relation queries the response was YES. [2023-08-24 14:39:32,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8794 conditions, 2582 events. 1740/2582 cut-off events. For 5351/5351 co-relation queries the response was YES. Maximal size of possible extension queue 115. Compared 11079 event pairs, 878 based on Foata normal form. 96/2593 useless extension candidates. Maximal degree in co-relation 8753. Up to 2211 conditions per place. [2023-08-24 14:39:32,887 INFO L140 encePairwiseOnDemand]: 368/376 looper letters, 50 selfloop transitions, 8 changer transitions 0/67 dead transitions. [2023-08-24 14:39:32,888 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 67 transitions, 448 flow [2023-08-24 14:39:32,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-24 14:39:32,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-24 14:39:32,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1137 transitions. [2023-08-24 14:39:32,891 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4319908814589666 [2023-08-24 14:39:32,891 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1137 transitions. [2023-08-24 14:39:32,891 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1137 transitions. [2023-08-24 14:39:32,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:39:32,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1137 transitions. [2023-08-24 14:39:32,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 162.42857142857142) internal successors, (1137), 7 states have internal predecessors, (1137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:32,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:32,898 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 376.0) internal successors, (3008), 8 states have internal predecessors, (3008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:32,899 INFO L175 Difference]: Start difference. First operand has 71 places, 54 transitions, 266 flow. Second operand 7 states and 1137 transitions. [2023-08-24 14:39:32,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 67 transitions, 448 flow [2023-08-24 14:39:32,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 67 transitions, 400 flow, removed 16 selfloop flow, removed 9 redundant places. [2023-08-24 14:39:32,906 INFO L231 Difference]: Finished difference. Result has 65 places, 56 transitions, 266 flow [2023-08-24 14:39:32,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=230, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=266, PETRI_PLACES=65, PETRI_TRANSITIONS=56} [2023-08-24 14:39:32,907 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 19 predicate places. [2023-08-24 14:39:32,907 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 56 transitions, 266 flow [2023-08-24 14:39:32,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 159.41666666666666) internal successors, (1913), 12 states have internal predecessors, (1913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:32,908 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:39:32,909 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1] [2023-08-24 14:39:32,917 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-24 14:39:33,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:39:33,115 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:39:33,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:39:33,116 INFO L85 PathProgramCache]: Analyzing trace with hash -473339862, now seen corresponding path program 2 times [2023-08-24 14:39:33,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:39:33,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833848699] [2023-08-24 14:39:33,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:39:33,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:39:33,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:39:33,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:39:33,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:39:33,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833848699] [2023-08-24 14:39:33,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833848699] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:39:33,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1475023085] [2023-08-24 14:39:33,328 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 14:39:33,328 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:39:33,329 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:39:33,329 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) [2023-08-24 14:39:33,333 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-24 14:39:33,458 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 14:39:33,459 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 14:39:33,460 INFO L262 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 11 conjunts are in the unsatisfiable core [2023-08-24 14:39:33,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:39:33,532 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:39:33,532 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:39:33,585 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:39:33,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1475023085] provided 1 perfect and 1 imperfect interpolant sequences [2023-08-24 14:39:33,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2023-08-24 14:39:33,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 10 [2023-08-24 14:39:33,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756730581] [2023-08-24 14:39:33,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-24 14:39:33,586 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-24 14:39:33,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:39:33,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-24 14:39:33,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-08-24 14:39:33,588 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 376 [2023-08-24 14:39:33,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 56 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 160.33333333333334) internal successors, (962), 6 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:33,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:39:33,589 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 376 [2023-08-24 14:39:33,589 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:39:33,834 INFO L124 PetriNetUnfolderBase]: 1374/2006 cut-off events. [2023-08-24 14:39:33,834 INFO L125 PetriNetUnfolderBase]: For 2893/2893 co-relation queries the response was YES. [2023-08-24 14:39:33,838 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6855 conditions, 2006 events. 1374/2006 cut-off events. For 2893/2893 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 8130 event pairs, 639 based on Foata normal form. 134/2065 useless extension candidates. Maximal degree in co-relation 6819. Up to 1438 conditions per place. [2023-08-24 14:39:33,844 INFO L140 encePairwiseOnDemand]: 371/376 looper letters, 61 selfloop transitions, 8 changer transitions 0/78 dead transitions. [2023-08-24 14:39:33,844 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 78 transitions, 495 flow [2023-08-24 14:39:33,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-24 14:39:33,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-24 14:39:33,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 989 transitions. [2023-08-24 14:39:33,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.438386524822695 [2023-08-24 14:39:33,847 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 989 transitions. [2023-08-24 14:39:33,847 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 989 transitions. [2023-08-24 14:39:33,848 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:39:33,848 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 989 transitions. [2023-08-24 14:39:33,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 164.83333333333334) internal successors, (989), 6 states have internal predecessors, (989), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:33,853 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 376.0) internal successors, (2632), 7 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:33,854 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 376.0) internal successors, (2632), 7 states have internal predecessors, (2632), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:33,854 INFO L175 Difference]: Start difference. First operand has 65 places, 56 transitions, 266 flow. Second operand 6 states and 989 transitions. [2023-08-24 14:39:33,854 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 78 transitions, 495 flow [2023-08-24 14:39:33,857 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 78 transitions, 467 flow, removed 8 selfloop flow, removed 4 redundant places. [2023-08-24 14:39:33,858 INFO L231 Difference]: Finished difference. Result has 67 places, 56 transitions, 267 flow [2023-08-24 14:39:33,859 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=244, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=267, PETRI_PLACES=67, PETRI_TRANSITIONS=56} [2023-08-24 14:39:33,859 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 21 predicate places. [2023-08-24 14:39:33,859 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 56 transitions, 267 flow [2023-08-24 14:39:33,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 160.33333333333334) internal successors, (962), 6 states have internal predecessors, (962), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:33,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:39:33,860 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-08-24 14:39:33,869 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-24 14:39:34,066 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 [2023-08-24 14:39:34,066 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:39:34,068 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:39:34,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1414086012, now seen corresponding path program 1 times [2023-08-24 14:39:34,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:39:34,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114692740] [2023-08-24 14:39:34,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:39:34,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:39:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:39:34,682 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:39:34,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:39:34,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114692740] [2023-08-24 14:39:34,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114692740] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:39:34,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [150807088] [2023-08-24 14:39:34,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:39:34,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:39:34,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:39:34,685 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) [2023-08-24 14:39:34,710 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-24 14:39:34,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:39:34,829 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-24 14:39:34,831 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:39:34,952 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2023-08-24 14:39:34,993 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:39:34,994 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:39:35,092 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:39:35,092 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2023-08-24 14:39:35,129 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:39:35,130 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [150807088] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:39:35,130 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:39:35,130 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2023-08-24 14:39:35,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611830258] [2023-08-24 14:39:35,130 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:39:35,131 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-24 14:39:35,131 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:39:35,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-24 14:39:35,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-08-24 14:39:35,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 376 [2023-08-24 14:39:35,135 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 56 transitions, 267 flow. Second operand has 15 states, 15 states have (on average 149.6) internal successors, (2244), 15 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:35,135 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:39:35,135 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 376 [2023-08-24 14:39:35,135 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:39:36,388 INFO L124 PetriNetUnfolderBase]: 3962/5670 cut-off events. [2023-08-24 14:39:36,388 INFO L125 PetriNetUnfolderBase]: For 8717/8717 co-relation queries the response was YES. [2023-08-24 14:39:36,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19226 conditions, 5670 events. 3962/5670 cut-off events. For 8717/8717 co-relation queries the response was YES. Maximal size of possible extension queue 199. Compared 26125 event pairs, 732 based on Foata normal form. 2/5529 useless extension candidates. Maximal degree in co-relation 19189. Up to 2708 conditions per place. [2023-08-24 14:39:36,419 INFO L140 encePairwiseOnDemand]: 365/376 looper letters, 201 selfloop transitions, 60 changer transitions 2/268 dead transitions. [2023-08-24 14:39:36,420 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 268 transitions, 1680 flow [2023-08-24 14:39:36,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-24 14:39:36,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-24 14:39:36,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2567 transitions. [2023-08-24 14:39:36,426 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42669547872340424 [2023-08-24 14:39:36,426 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2567 transitions. [2023-08-24 14:39:36,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2567 transitions. [2023-08-24 14:39:36,428 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:39:36,428 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2567 transitions. [2023-08-24 14:39:36,432 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 160.4375) internal successors, (2567), 16 states have internal predecessors, (2567), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:36,439 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 376.0) internal successors, (6392), 17 states have internal predecessors, (6392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:36,441 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 376.0) internal successors, (6392), 17 states have internal predecessors, (6392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:36,441 INFO L175 Difference]: Start difference. First operand has 67 places, 56 transitions, 267 flow. Second operand 16 states and 2567 transitions. [2023-08-24 14:39:36,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 268 transitions, 1680 flow [2023-08-24 14:39:36,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 268 transitions, 1632 flow, removed 0 selfloop flow, removed 5 redundant places. [2023-08-24 14:39:36,454 INFO L231 Difference]: Finished difference. Result has 86 places, 114 transitions, 791 flow [2023-08-24 14:39:36,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=56, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=791, PETRI_PLACES=86, PETRI_TRANSITIONS=114} [2023-08-24 14:39:36,455 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 40 predicate places. [2023-08-24 14:39:36,455 INFO L495 AbstractCegarLoop]: Abstraction has has 86 places, 114 transitions, 791 flow [2023-08-24 14:39:36,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 149.6) internal successors, (2244), 15 states have internal predecessors, (2244), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:36,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:39:36,456 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-08-24 14:39:36,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-24 14:39:36,664 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 [2023-08-24 14:39:36,664 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:39:36,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:39:36,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1527138698, now seen corresponding path program 2 times [2023-08-24 14:39:36,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:39:36,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [475960257] [2023-08-24 14:39:36,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:39:36,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:39:36,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:39:37,838 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:39:37,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:39:37,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [475960257] [2023-08-24 14:39:37,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [475960257] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:39:37,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117737838] [2023-08-24 14:39:37,839 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 14:39:37,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:39:37,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:39:37,840 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) [2023-08-24 14:39:37,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-24 14:39:37,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 14:39:37,985 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 14:39:37,987 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 70 conjunts are in the unsatisfiable core [2023-08-24 14:39:37,993 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:39:38,057 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-08-24 14:39:38,102 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 14:39:38,145 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 14:39:38,259 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 14:39:38,261 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 21 treesize of output 21 [2023-08-24 14:39:38,335 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 14:39:38,336 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 21 treesize of output 21 [2023-08-24 14:39:38,370 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 10 [2023-08-24 14:39:38,417 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:39:38,417 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:39:39,688 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((|v_thread1Thread1of1ForFork0_~#t2~0.base_42| Int)) (or (forall ((|v_thread1Thread1of1ForFork0_~#t3~0.base_36| Int)) (or (<= |v_thread1Thread1of1ForFork0_~#t3~0.base_36| |c_#StackHeapBarrier|) (forall ((v_ArrVal_429 (Array Int Int)) (v_ArrVal_430 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |v_thread1Thread1of1ForFork0_~#t2~0.base_42| v_ArrVal_429) |v_thread1Thread1of1ForFork0_~#t3~0.base_36| v_ArrVal_430) c_~X_0~0.base) .cse0) (+ c_~s_6~0 1))))) (<= |v_thread1Thread1of1ForFork0_~#t2~0.base_42| |c_#StackHeapBarrier|))) (forall ((|v_thread1Thread1of1ForFork0_~#t2~0.base_42| Int)) (or (<= |v_thread1Thread1of1ForFork0_~#t2~0.base_42| |c_#StackHeapBarrier|) (forall ((|v_thread1Thread1of1ForFork0_~#t3~0.base_36| Int)) (or (forall ((v_ArrVal_429 (Array Int Int)) (v_ArrVal_430 (Array Int Int))) (<= c_~s_6~0 (select (select (store (store |c_#memory_int| |v_thread1Thread1of1ForFork0_~#t2~0.base_42| v_ArrVal_429) |v_thread1Thread1of1ForFork0_~#t3~0.base_36| v_ArrVal_430) c_~X_0~0.base) .cse0))) (<= |v_thread1Thread1of1ForFork0_~#t3~0.base_36| |c_#StackHeapBarrier|))))))) is different from false [2023-08-24 14:39:40,797 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (select (select |c_#memory_int| c_~X_0~0.base) (+ c_~X_0~0.offset 4 (* 4 c_~i_7~0)))) (.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((|v_thread1Thread1of1ForFork0_~#t2~0.base_42| Int)) (or (<= |v_thread1Thread1of1ForFork0_~#t2~0.base_42| |c_#StackHeapBarrier|) (forall ((|v_thread1Thread1of1ForFork0_~#t3~0.base_36| Int)) (or (forall ((v_ArrVal_429 (Array Int Int)) (v_ArrVal_430 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |v_thread1Thread1of1ForFork0_~#t2~0.base_42| v_ArrVal_429) |v_thread1Thread1of1ForFork0_~#t3~0.base_36| v_ArrVal_430) c_~X_0~0.base) .cse0) (+ c_~s_6~0 .cse1 1))) (<= |v_thread1Thread1of1ForFork0_~#t3~0.base_36| |c_#StackHeapBarrier|))))) (forall ((|v_thread1Thread1of1ForFork0_~#t2~0.base_42| Int)) (or (forall ((|v_thread1Thread1of1ForFork0_~#t3~0.base_36| Int)) (or (forall ((v_ArrVal_429 (Array Int Int)) (v_ArrVal_430 (Array Int Int))) (<= (+ c_~s_6~0 .cse1) (select (select (store (store |c_#memory_int| |v_thread1Thread1of1ForFork0_~#t2~0.base_42| v_ArrVal_429) |v_thread1Thread1of1ForFork0_~#t3~0.base_36| v_ArrVal_430) c_~X_0~0.base) .cse0))) (<= |v_thread1Thread1of1ForFork0_~#t3~0.base_36| |c_#StackHeapBarrier|))) (<= |v_thread1Thread1of1ForFork0_~#t2~0.base_42| |c_#StackHeapBarrier|))))) is different from false [2023-08-24 14:39:52,003 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:39:52,004 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 46 [2023-08-24 14:39:52,016 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 665078 treesize of output 609782 [2023-08-24 14:39:52,077 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 234 treesize of output 202 [2023-08-24 14:39:52,083 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 202 treesize of output 190 [2023-08-24 14:39:52,091 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 130 treesize of output 114 [2023-08-24 14:39:52,099 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 174 treesize of output 150 [2023-08-24 14:39:52,230 INFO L322 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-08-24 14:39:52,230 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 59 treesize of output 1 [2023-08-24 14:39:54,253 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 2 times theorem prover too weak. 1 trivial. 1 not checked. [2023-08-24 14:39:54,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117737838] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:39:54,253 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:39:54,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12, 11] total 27 [2023-08-24 14:39:54,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113598943] [2023-08-24 14:39:54,254 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:39:54,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-24 14:39:54,255 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:39:54,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-24 14:39:54,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=582, Unknown=21, NotChecked=102, Total=812 [2023-08-24 14:39:54,258 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 376 [2023-08-24 14:39:54,261 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 114 transitions, 791 flow. Second operand has 29 states, 29 states have (on average 127.20689655172414) internal successors, (3689), 29 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:39:54,261 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:39:54,261 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 376 [2023-08-24 14:39:54,261 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:39:56,616 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] [2023-08-24 14:39:58,617 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:00,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:02,622 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:04,624 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:06,626 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:08,627 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:10,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:12,629 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:14,631 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:16,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:18,633 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:20,634 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:22,636 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:24,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:26,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:30,676 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:32,679 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:34,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:36,681 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:38,683 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:40,684 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:42,686 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:44,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:46,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:48,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:50,691 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:52,696 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:54,698 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:56,699 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:40:58,700 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:00,772 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:02,774 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:04,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:06,776 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:08,791 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:10,792 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:12,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:14,802 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:16,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:18,807 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:20,811 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:22,826 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:24,827 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:26,828 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:28,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:30,835 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:33,057 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:35,059 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:37,060 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:39,061 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:41,062 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:43,063 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:45,064 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:47,065 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:49,066 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:51,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:53,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:55,075 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:57,076 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:41:59,108 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:01,111 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:03,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:05,128 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:07,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:09,136 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:11,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:13,138 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:15,139 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:17,143 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:19,148 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:21,149 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:23,150 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:25,152 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:27,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:29,210 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:31,214 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:33,218 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:35,228 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:37,229 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:39,230 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:41,240 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:43,242 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:45,243 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:47,244 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:49,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:51,257 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:53,261 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:55,262 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:57,263 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:42:59,265 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:01,266 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:03,364 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:05,365 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:07,366 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:09,367 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:11,373 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:13,380 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:15,381 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:17,382 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:19,383 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:21,544 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:23,545 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:25,548 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:27,558 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:29,559 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:31,561 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:33,562 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:35,563 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:37,687 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:39,688 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:41,689 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:43,690 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:45,695 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:47,701 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:49,703 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:51,704 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:53,705 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:55,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:57,708 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:43:59,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:01,723 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:03,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:05,728 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:07,730 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:09,736 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:11,737 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:13,738 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:15,740 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:17,859 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:19,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:21,862 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:23,863 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:25,866 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:27,870 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:29,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:31,875 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:33,877 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:35,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:38,430 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:40,432 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:42,435 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:44,437 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:46,438 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:48,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:50,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:52,446 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:54,447 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:56,448 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:44:58,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:00,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:02,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:04,455 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:06,801 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:08,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:10,804 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:12,805 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:14,809 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:16,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:18,815 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:20,816 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:22,818 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:24,819 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:26,820 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:28,823 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:30,831 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:32,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:34,842 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:36,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:38,845 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:40,846 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:42,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:44,969 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:46,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:48,977 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:50,978 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:52,979 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:54,980 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:56,982 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:45:58,983 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:46:00,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:46:02,993 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:46:04,994 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:46:07,067 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:46:09,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:46:11,071 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:46:13,086 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:46:15,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:46:17,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:46:19,098 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:46:21,099 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:46:23,124 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:46:25,125 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:46:27,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:46:29,127 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:46:31,132 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:46:33,133 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:46:35,137 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:46:37,140 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:46:39,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:46:41,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-08-24 14:46:41,201 INFO L124 PetriNetUnfolderBase]: 6590/9369 cut-off events. [2023-08-24 14:46:41,201 INFO L125 PetriNetUnfolderBase]: For 29482/29502 co-relation queries the response was YES. [2023-08-24 14:46:41,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39023 conditions, 9369 events. 6590/9369 cut-off events. For 29482/29502 co-relation queries the response was YES. Maximal size of possible extension queue 339. Compared 46645 event pairs, 1137 based on Foata normal form. 4/9140 useless extension candidates. Maximal degree in co-relation 38979. Up to 4038 conditions per place. [2023-08-24 14:46:41,254 INFO L140 encePairwiseOnDemand]: 349/376 looper letters, 232 selfloop transitions, 104 changer transitions 2/343 dead transitions. [2023-08-24 14:46:41,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 343 transitions, 2812 flow [2023-08-24 14:46:41,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-24 14:46:41,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-24 14:46:41,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 1949 transitions. [2023-08-24 14:46:41,260 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37025075987841943 [2023-08-24 14:46:41,260 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 1949 transitions. [2023-08-24 14:46:41,260 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 1949 transitions. [2023-08-24 14:46:41,261 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:46:41,261 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 1949 transitions. [2023-08-24 14:46:41,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 139.21428571428572) internal successors, (1949), 14 states have internal predecessors, (1949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:46:41,270 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 376.0) internal successors, (5640), 15 states have internal predecessors, (5640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:46:41,272 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 376.0) internal successors, (5640), 15 states have internal predecessors, (5640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:46:41,272 INFO L175 Difference]: Start difference. First operand has 86 places, 114 transitions, 791 flow. Second operand 14 states and 1949 transitions. [2023-08-24 14:46:41,272 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 343 transitions, 2812 flow [2023-08-24 14:46:41,386 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 343 transitions, 2749 flow, removed 22 selfloop flow, removed 2 redundant places. [2023-08-24 14:46:41,390 INFO L231 Difference]: Finished difference. Result has 105 places, 194 transitions, 1770 flow [2023-08-24 14:46:41,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1770, PETRI_PLACES=105, PETRI_TRANSITIONS=194} [2023-08-24 14:46:41,390 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 59 predicate places. [2023-08-24 14:46:41,391 INFO L495 AbstractCegarLoop]: Abstraction has has 105 places, 194 transitions, 1770 flow [2023-08-24 14:46:41,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 127.20689655172414) internal successors, (3689), 29 states have internal predecessors, (3689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:46:41,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:46:41,392 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-08-24 14:46:41,400 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-24 14:46:41,598 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 [2023-08-24 14:46:41,598 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:46:41,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:46:41,599 INFO L85 PathProgramCache]: Analyzing trace with hash 647381006, now seen corresponding path program 3 times [2023-08-24 14:46:41,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:46:41,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576271624] [2023-08-24 14:46:41,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:46:41,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:46:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:46:42,437 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:46:42,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:46:42,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576271624] [2023-08-24 14:46:42,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576271624] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:46:42,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444294665] [2023-08-24 14:46:42,437 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 14:46:42,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:46:42,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:46:42,439 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) [2023-08-24 14:46:42,445 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-24 14:46:42,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 14:46:42,596 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 14:46:42,599 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 72 conjunts are in the unsatisfiable core [2023-08-24 14:46:42,603 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:46:42,611 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 14:46:42,623 INFO L322 Elim1Store]: treesize reduction 24, result has 33.3 percent of original size [2023-08-24 14:46:42,623 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 23 [2023-08-24 14:46:42,717 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-24 14:46:42,718 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-08-24 14:46:42,965 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 [2023-08-24 14:46:43,020 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 14:46:43,020 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 [2023-08-24 14:46:43,085 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-08-24 14:46:43,100 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 14:46:43,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:46:43,280 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((v_ArrVal_492 (Array Int Int)) (v_ArrVal_493 (Array Int Int))) (<= c_~s_2~0 (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_492) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_493) c_~X_0~0.base) .cse0))) (forall ((v_ArrVal_492 (Array Int Int)) (v_ArrVal_493 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_492) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_493) c_~X_0~0.base) .cse0) (+ 1 c_~s_2~0))))) is different from false [2023-08-24 14:46:43,373 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:46:43,373 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 108 treesize of output 74 [2023-08-24 14:46:43,378 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 34 treesize of output 30 [2023-08-24 14:46:43,381 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 62 treesize of output 54 [2023-08-24 14:46:43,410 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 14:46:43,411 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 14:46:43,608 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 1 not checked. [2023-08-24 14:46:43,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444294665] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:46:43,608 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:46:43,608 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 10, 9] total 24 [2023-08-24 14:46:43,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254063562] [2023-08-24 14:46:43,608 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:46:43,609 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-24 14:46:43,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:46:43,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-24 14:46:43,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=522, Unknown=7, NotChecked=46, Total=650 [2023-08-24 14:46:43,612 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 376 [2023-08-24 14:46:43,614 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 194 transitions, 1770 flow. Second operand has 26 states, 26 states have (on average 124.96153846153847) internal successors, (3249), 26 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:46:43,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:46:43,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 376 [2023-08-24 14:46:43,614 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:46:49,275 INFO L124 PetriNetUnfolderBase]: 9099/12973 cut-off events. [2023-08-24 14:46:49,275 INFO L125 PetriNetUnfolderBase]: For 58496/58610 co-relation queries the response was YES. [2023-08-24 14:46:49,363 INFO L83 FinitePrefix]: Finished finitePrefix Result has 66486 conditions, 12973 events. 9099/12973 cut-off events. For 58496/58610 co-relation queries the response was YES. Maximal size of possible extension queue 496. Compared 68500 event pairs, 1034 based on Foata normal form. 74/12696 useless extension candidates. Maximal degree in co-relation 66431. Up to 7743 conditions per place. [2023-08-24 14:46:49,431 INFO L140 encePairwiseOnDemand]: 364/376 looper letters, 336 selfloop transitions, 154 changer transitions 2/497 dead transitions. [2023-08-24 14:46:49,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 497 transitions, 5175 flow [2023-08-24 14:46:49,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-08-24 14:46:49,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2023-08-24 14:46:49,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 2924 transitions. [2023-08-24 14:46:49,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3534816247582205 [2023-08-24 14:46:49,439 INFO L72 ComplementDD]: Start complementDD. Operand 22 states and 2924 transitions. [2023-08-24 14:46:49,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 2924 transitions. [2023-08-24 14:46:49,441 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:46:49,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 22 states and 2924 transitions. [2023-08-24 14:46:49,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 23 states, 22 states have (on average 132.9090909090909) internal successors, (2924), 22 states have internal predecessors, (2924), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:46:49,455 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 23 states, 23 states have (on average 376.0) internal successors, (8648), 23 states have internal predecessors, (8648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:46:49,457 INFO L81 ComplementDD]: Finished complementDD. Result has 23 states, 23 states have (on average 376.0) internal successors, (8648), 23 states have internal predecessors, (8648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:46:49,457 INFO L175 Difference]: Start difference. First operand has 105 places, 194 transitions, 1770 flow. Second operand 22 states and 2924 transitions. [2023-08-24 14:46:49,457 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 497 transitions, 5175 flow [2023-08-24 14:46:49,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 123 places, 497 transitions, 4990 flow, removed 90 selfloop flow, removed 3 redundant places. [2023-08-24 14:46:49,907 INFO L231 Difference]: Finished difference. Result has 133 places, 270 transitions, 3160 flow [2023-08-24 14:46:49,908 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=1693, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=96, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=22, PETRI_FLOW=3160, PETRI_PLACES=133, PETRI_TRANSITIONS=270} [2023-08-24 14:46:49,908 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 87 predicate places. [2023-08-24 14:46:49,908 INFO L495 AbstractCegarLoop]: Abstraction has has 133 places, 270 transitions, 3160 flow [2023-08-24 14:46:49,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 124.96153846153847) internal successors, (3249), 26 states have internal predecessors, (3249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:46:49,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:46:49,909 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-08-24 14:46:49,915 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-24 14:46:50,110 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 [2023-08-24 14:46:50,110 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:46:50,110 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:46:50,111 INFO L85 PathProgramCache]: Analyzing trace with hash -870032224, now seen corresponding path program 4 times [2023-08-24 14:46:50,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:46:50,111 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1326068431] [2023-08-24 14:46:50,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:46:50,111 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:46:50,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:46:50,733 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:46:50,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:46:50,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1326068431] [2023-08-24 14:46:50,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1326068431] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:46:50,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [855689348] [2023-08-24 14:46:50,733 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 14:46:50,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:46:50,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:46:50,737 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) [2023-08-24 14:46:50,739 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-24 14:46:50,884 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 14:46:50,885 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 14:46:50,887 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-24 14:46:50,892 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:46:51,020 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2023-08-24 14:46:51,082 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:46:51,082 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:46:51,203 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:46:51,204 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 17 [2023-08-24 14:46:51,219 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-24 14:46:51,219 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-08-24 14:46:51,282 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:46:51,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [855689348] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:46:51,282 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:46:51,282 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 6] total 15 [2023-08-24 14:46:51,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529941513] [2023-08-24 14:46:51,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:46:51,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 14:46:51,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:46:51,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 14:46:51,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2023-08-24 14:46:51,285 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 376 [2023-08-24 14:46:51,287 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 270 transitions, 3160 flow. Second operand has 16 states, 16 states have (on average 149.5625) internal successors, (2393), 16 states have internal predecessors, (2393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:46:51,287 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:46:51,287 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 376 [2023-08-24 14:46:51,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:46:54,220 INFO L124 PetriNetUnfolderBase]: 10123/14441 cut-off events. [2023-08-24 14:46:54,220 INFO L125 PetriNetUnfolderBase]: For 98315/98413 co-relation queries the response was YES. [2023-08-24 14:46:54,284 INFO L83 FinitePrefix]: Finished finitePrefix Result has 82280 conditions, 14441 events. 10123/14441 cut-off events. For 98315/98413 co-relation queries the response was YES. Maximal size of possible extension queue 558. Compared 77493 event pairs, 3370 based on Foata normal form. 28/14093 useless extension candidates. Maximal degree in co-relation 82214. Up to 12583 conditions per place. [2023-08-24 14:46:54,348 INFO L140 encePairwiseOnDemand]: 365/376 looper letters, 310 selfloop transitions, 48 changer transitions 1/364 dead transitions. [2023-08-24 14:46:54,348 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 364 transitions, 4751 flow [2023-08-24 14:46:54,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-24 14:46:54,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-24 14:46:54,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1270 transitions. [2023-08-24 14:46:54,351 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42220744680851063 [2023-08-24 14:46:54,351 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1270 transitions. [2023-08-24 14:46:54,351 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1270 transitions. [2023-08-24 14:46:54,352 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:46:54,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1270 transitions. [2023-08-24 14:46:54,354 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 158.75) internal successors, (1270), 8 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:46:54,357 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 376.0) internal successors, (3384), 9 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:46:54,358 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 376.0) internal successors, (3384), 9 states have internal predecessors, (3384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:46:54,358 INFO L175 Difference]: Start difference. First operand has 133 places, 270 transitions, 3160 flow. Second operand 8 states and 1270 transitions. [2023-08-24 14:46:54,358 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 364 transitions, 4751 flow [2023-08-24 14:46:55,230 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 364 transitions, 4560 flow, removed 83 selfloop flow, removed 5 redundant places. [2023-08-24 14:46:55,234 INFO L231 Difference]: Finished difference. Result has 138 places, 300 transitions, 3587 flow [2023-08-24 14:46:55,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=2997, PETRI_DIFFERENCE_MINUEND_PLACES=128, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=270, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=227, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=3587, PETRI_PLACES=138, PETRI_TRANSITIONS=300} [2023-08-24 14:46:55,234 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 92 predicate places. [2023-08-24 14:46:55,235 INFO L495 AbstractCegarLoop]: Abstraction has has 138 places, 300 transitions, 3587 flow [2023-08-24 14:46:55,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 149.5625) internal successors, (2393), 16 states have internal predecessors, (2393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:46:55,235 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:46:55,235 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-08-24 14:46:55,254 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-24 14:46:55,441 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 [2023-08-24 14:46:55,441 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:46:55,441 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:46:55,441 INFO L85 PathProgramCache]: Analyzing trace with hash -690119459, now seen corresponding path program 1 times [2023-08-24 14:46:55,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:46:55,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026056742] [2023-08-24 14:46:55,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:46:55,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:46:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:46:55,906 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:46:55,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:46:55,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026056742] [2023-08-24 14:46:55,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026056742] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:46:55,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [10695679] [2023-08-24 14:46:55,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:46:55,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:46:55,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:46:55,908 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 14:46:55,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-24 14:46:56,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:46:56,055 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-24 14:46:56,057 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:46:56,209 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2023-08-24 14:46:56,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:46:56,265 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:46:56,398 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:46:56,398 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2023-08-24 14:46:56,431 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:46:56,431 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [10695679] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:46:56,431 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:46:56,431 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2023-08-24 14:46:56,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240383377] [2023-08-24 14:46:56,431 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:46:56,432 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-24 14:46:56,432 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:46:56,432 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-24 14:46:56,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2023-08-24 14:46:56,434 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 376 [2023-08-24 14:46:56,435 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 138 places, 300 transitions, 3587 flow. Second operand has 15 states, 15 states have (on average 149.86666666666667) internal successors, (2248), 15 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:46:56,435 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:46:56,435 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 376 [2023-08-24 14:46:56,435 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:46:59,885 INFO L124 PetriNetUnfolderBase]: 12059/17171 cut-off events. [2023-08-24 14:46:59,885 INFO L125 PetriNetUnfolderBase]: For 122799/122909 co-relation queries the response was YES. [2023-08-24 14:46:59,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 98689 conditions, 17171 events. 12059/17171 cut-off events. For 122799/122909 co-relation queries the response was YES. Maximal size of possible extension queue 690. Compared 94793 event pairs, 3703 based on Foata normal form. 31/16719 useless extension candidates. Maximal degree in co-relation 98621. Up to 13665 conditions per place. [2023-08-24 14:47:00,008 INFO L140 encePairwiseOnDemand]: 366/376 looper letters, 434 selfloop transitions, 87 changer transitions 1/527 dead transitions. [2023-08-24 14:47:00,009 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 153 places, 527 transitions, 6618 flow [2023-08-24 14:47:00,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-24 14:47:00,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-24 14:47:00,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2538 transitions. [2023-08-24 14:47:00,013 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.421875 [2023-08-24 14:47:00,014 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2538 transitions. [2023-08-24 14:47:00,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2538 transitions. [2023-08-24 14:47:00,015 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:47:00,015 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2538 transitions. [2023-08-24 14:47:00,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 158.625) internal successors, (2538), 16 states have internal predecessors, (2538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:00,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 376.0) internal successors, (6392), 17 states have internal predecessors, (6392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:00,025 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 376.0) internal successors, (6392), 17 states have internal predecessors, (6392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:00,026 INFO L175 Difference]: Start difference. First operand has 138 places, 300 transitions, 3587 flow. Second operand 16 states and 2538 transitions. [2023-08-24 14:47:00,026 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 153 places, 527 transitions, 6618 flow [2023-08-24 14:47:01,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 150 places, 527 transitions, 6427 flow, removed 55 selfloop flow, removed 3 redundant places. [2023-08-24 14:47:01,082 INFO L231 Difference]: Finished difference. Result has 158 places, 355 transitions, 4523 flow [2023-08-24 14:47:01,082 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=3441, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=300, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=4523, PETRI_PLACES=158, PETRI_TRANSITIONS=355} [2023-08-24 14:47:01,082 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 112 predicate places. [2023-08-24 14:47:01,082 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 355 transitions, 4523 flow [2023-08-24 14:47:01,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 149.86666666666667) internal successors, (2248), 15 states have internal predecessors, (2248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:01,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:47:01,083 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-08-24 14:47:01,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-24 14:47:01,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-24 14:47:01,284 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:47:01,284 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:47:01,284 INFO L85 PathProgramCache]: Analyzing trace with hash -2115518778, now seen corresponding path program 5 times [2023-08-24 14:47:01,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:47:01,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712659432] [2023-08-24 14:47:01,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:47:01,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:47:01,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:47:01,908 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:47:01,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:47:01,908 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712659432] [2023-08-24 14:47:01,909 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712659432] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:47:01,909 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883814463] [2023-08-24 14:47:01,909 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 14:47:01,909 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:47:01,909 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:47:01,913 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 14:47:01,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-24 14:47:02,066 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 14:47:02,066 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 14:47:02,069 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 69 conjunts are in the unsatisfiable core [2023-08-24 14:47:02,071 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:47:02,100 INFO L322 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-24 14:47:02,100 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2023-08-24 14:47:02,203 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-24 14:47:02,204 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2023-08-24 14:47:02,319 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 [2023-08-24 14:47:02,394 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-08-24 14:47:02,474 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:47:02,474 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:47:02,741 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:47:02,741 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 60 treesize of output 41 [2023-08-24 14:47:02,747 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 19 treesize of output 12 [2023-08-24 14:47:02,758 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 14:47:02,766 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-24 14:47:02,767 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 12 [2023-08-24 14:47:03,039 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:47:03,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883814463] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:47:03,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:47:03,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2023-08-24 14:47:03,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935371058] [2023-08-24 14:47:03,039 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:47:03,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-08-24 14:47:03,040 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:47:03,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-08-24 14:47:03,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=353, Unknown=5, NotChecked=0, Total=420 [2023-08-24 14:47:03,042 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 376 [2023-08-24 14:47:03,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 355 transitions, 4523 flow. Second operand has 21 states, 21 states have (on average 128.95238095238096) internal successors, (2708), 21 states have internal predecessors, (2708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:03,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:47:03,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 376 [2023-08-24 14:47:03,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:47:07,895 INFO L124 PetriNetUnfolderBase]: 15923/23094 cut-off events. [2023-08-24 14:47:07,895 INFO L125 PetriNetUnfolderBase]: For 171358/171439 co-relation queries the response was YES. [2023-08-24 14:47:08,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129541 conditions, 23094 events. 15923/23094 cut-off events. For 171358/171439 co-relation queries the response was YES. Maximal size of possible extension queue 991. Compared 139414 event pairs, 2487 based on Foata normal form. 55/22341 useless extension candidates. Maximal degree in co-relation 129465. Up to 13919 conditions per place. [2023-08-24 14:47:08,108 INFO L140 encePairwiseOnDemand]: 360/376 looper letters, 396 selfloop transitions, 238 changer transitions 4/643 dead transitions. [2023-08-24 14:47:08,108 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 643 transitions, 8735 flow [2023-08-24 14:47:08,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-24 14:47:08,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-24 14:47:08,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 2322 transitions. [2023-08-24 14:47:08,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3632665832290363 [2023-08-24 14:47:08,111 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 2322 transitions. [2023-08-24 14:47:08,111 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 2322 transitions. [2023-08-24 14:47:08,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:47:08,112 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 2322 transitions. [2023-08-24 14:47:08,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 136.58823529411765) internal successors, (2322), 17 states have internal predecessors, (2322), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:08,122 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 376.0) internal successors, (6768), 18 states have internal predecessors, (6768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:08,123 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 376.0) internal successors, (6768), 18 states have internal predecessors, (6768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:08,123 INFO L175 Difference]: Start difference. First operand has 158 places, 355 transitions, 4523 flow. Second operand 17 states and 2322 transitions. [2023-08-24 14:47:08,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 643 transitions, 8735 flow [2023-08-24 14:47:09,905 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 171 places, 643 transitions, 8302 flow, removed 205 selfloop flow, removed 3 redundant places. [2023-08-24 14:47:09,913 INFO L231 Difference]: Finished difference. Result has 178 places, 531 transitions, 7466 flow [2023-08-24 14:47:09,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=4248, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=181, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=7466, PETRI_PLACES=178, PETRI_TRANSITIONS=531} [2023-08-24 14:47:09,913 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 132 predicate places. [2023-08-24 14:47:09,913 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 531 transitions, 7466 flow [2023-08-24 14:47:09,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 128.95238095238096) internal successors, (2708), 21 states have internal predecessors, (2708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:09,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:47:09,914 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-08-24 14:47:09,924 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-24 14:47:10,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-24 14:47:10,124 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:47:10,125 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:47:10,125 INFO L85 PathProgramCache]: Analyzing trace with hash 529389218, now seen corresponding path program 6 times [2023-08-24 14:47:10,125 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:47:10,125 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [244897044] [2023-08-24 14:47:10,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:47:10,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:47:10,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:47:10,791 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:47:10,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:47:10,791 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [244897044] [2023-08-24 14:47:10,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [244897044] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:47:10,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [632508698] [2023-08-24 14:47:10,792 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 14:47:10,792 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:47:10,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:47:10,793 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 14:47:10,795 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-24 14:47:10,966 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-24 14:47:10,967 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 14:47:10,969 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 80 conjunts are in the unsatisfiable core [2023-08-24 14:47:10,973 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:47:10,990 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 14:47:10,991 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 14:47:11,006 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-24 14:47:11,006 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-08-24 14:47:11,088 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-24 14:47:11,122 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 14:47:11,180 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-24 14:47:11,180 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-08-24 14:47:11,241 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 14:47:11,293 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 14:47:11,344 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 14:47:11,483 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:47:11,483 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2023-08-24 14:47:11,631 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:47:11,631 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:47:12,400 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse1 (+ c_~X_0~0.offset 4)) (.cse2 (+ c_~i_3~0 1))) (and (forall ((v_ArrVal_733 (Array Int Int)) (v_ArrVal_732 (Array Int Int)) (v_~i_3~0_153 Int)) (or (< v_~i_3~0_153 1) (let ((.cse0 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_732) |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_733) c_~X_0~0.base))) (< (+ (select .cse0 (+ (* v_~i_3~0_153 4) c_~X_0~0.offset)) c_~s_2~0) (+ (select .cse0 .cse1) 1))) (< .cse2 v_~i_3~0_153))) (forall ((v_ArrVal_733 (Array Int Int)) (v_ArrVal_732 (Array Int Int)) (v_~i_3~0_153 Int)) (or (< v_~i_3~0_153 1) (let ((.cse3 (select (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_732) |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_733) c_~X_0~0.base))) (<= (select .cse3 .cse1) (+ (select .cse3 (+ (* v_~i_3~0_153 4) c_~X_0~0.offset)) c_~s_2~0))) (< .cse2 v_~i_3~0_153))))) is different from false [2023-08-24 14:47:12,481 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~i_3~0 1)) (.cse1 (+ c_~X_0~0.offset 4))) (and (forall ((v_ArrVal_733 (Array Int Int)) (v_ArrVal_732 (Array Int Int)) (v_~i_3~0_153 Int) (v_ArrVal_731 (Array Int Int))) (or (let ((.cse0 (select (store (store (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t2~0.base| v_ArrVal_731) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_732) |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_733) c_~X_0~0.base))) (<= (select .cse0 .cse1) (+ (select .cse0 (+ (* v_~i_3~0_153 4) c_~X_0~0.offset)) c_~s_2~0))) (< v_~i_3~0_153 1) (< .cse2 v_~i_3~0_153))) (forall ((v_ArrVal_733 (Array Int Int)) (v_ArrVal_732 (Array Int Int)) (v_~i_3~0_153 Int) (v_ArrVal_731 (Array Int Int))) (or (< v_~i_3~0_153 1) (< .cse2 v_~i_3~0_153) (let ((.cse3 (select (store (store (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t2~0.base| v_ArrVal_731) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_732) |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_733) c_~X_0~0.base))) (< (+ (select .cse3 (+ (* v_~i_3~0_153 4) c_~X_0~0.offset)) c_~s_2~0) (+ (select .cse3 .cse1) 1))))))) is different from false [2023-08-24 14:47:12,552 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:47:12,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [632508698] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:47:12,553 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:47:12,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 10] total 28 [2023-08-24 14:47:12,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433900798] [2023-08-24 14:47:12,553 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:47:12,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2023-08-24 14:47:12,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:47:12,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2023-08-24 14:47:12,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=606, Unknown=3, NotChecked=102, Total=812 [2023-08-24 14:47:12,558 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 376 [2023-08-24 14:47:12,561 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 531 transitions, 7466 flow. Second operand has 29 states, 29 states have (on average 118.51724137931035) internal successors, (3437), 29 states have internal predecessors, (3437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:12,561 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:47:12,561 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 376 [2023-08-24 14:47:12,561 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:47:20,084 INFO L124 PetriNetUnfolderBase]: 18831/27356 cut-off events. [2023-08-24 14:47:20,085 INFO L125 PetriNetUnfolderBase]: For 263323/263448 co-relation queries the response was YES. [2023-08-24 14:47:20,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 168921 conditions, 27356 events. 18831/27356 cut-off events. For 263323/263448 co-relation queries the response was YES. Maximal size of possible extension queue 1196. Compared 170166 event pairs, 5283 based on Foata normal form. 56/26484 useless extension candidates. Maximal degree in co-relation 168836. Up to 20969 conditions per place. [2023-08-24 14:47:20,558 INFO L140 encePairwiseOnDemand]: 355/376 looper letters, 596 selfloop transitions, 260 changer transitions 25/886 dead transitions. [2023-08-24 14:47:20,558 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 886 transitions, 13058 flow [2023-08-24 14:47:20,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2023-08-24 14:47:20,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2023-08-24 14:47:20,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 4235 transitions. [2023-08-24 14:47:20,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3312734668335419 [2023-08-24 14:47:20,565 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 4235 transitions. [2023-08-24 14:47:20,565 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 4235 transitions. [2023-08-24 14:47:20,567 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:47:20,567 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 4235 transitions. [2023-08-24 14:47:20,573 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 124.55882352941177) internal successors, (4235), 34 states have internal predecessors, (4235), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:20,590 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 376.0) internal successors, (13160), 35 states have internal predecessors, (13160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:20,591 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 376.0) internal successors, (13160), 35 states have internal predecessors, (13160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:20,591 INFO L175 Difference]: Start difference. First operand has 178 places, 531 transitions, 7466 flow. Second operand 34 states and 4235 transitions. [2023-08-24 14:47:20,591 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 886 transitions, 13058 flow [2023-08-24 14:47:26,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 886 transitions, 12669 flow, removed 189 selfloop flow, removed 3 redundant places. [2023-08-24 14:47:26,121 INFO L231 Difference]: Finished difference. Result has 223 places, 688 transitions, 10551 flow [2023-08-24 14:47:26,121 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=7218, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=531, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=137, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=360, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=10551, PETRI_PLACES=223, PETRI_TRANSITIONS=688} [2023-08-24 14:47:26,121 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 177 predicate places. [2023-08-24 14:47:26,122 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 688 transitions, 10551 flow [2023-08-24 14:47:26,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 118.51724137931035) internal successors, (3437), 29 states have internal predecessors, (3437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:26,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:47:26,122 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-08-24 14:47:26,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-24 14:47:26,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-24 14:47:26,323 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:47:26,324 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:47:26,324 INFO L85 PathProgramCache]: Analyzing trace with hash 1738556810, now seen corresponding path program 7 times [2023-08-24 14:47:26,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:47:26,324 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818342985] [2023-08-24 14:47:26,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:47:26,324 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:47:26,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:47:27,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:47:27,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:47:27,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818342985] [2023-08-24 14:47:27,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818342985] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:47:27,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1403929320] [2023-08-24 14:47:27,075 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-08-24 14:47:27,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:47:27,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:47:27,077 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 14:47:27,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-08-24 14:47:27,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:47:27,236 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 58 conjunts are in the unsatisfiable core [2023-08-24 14:47:27,245 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:47:27,392 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 14:47:27,393 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 16 treesize of output 18 [2023-08-24 14:47:27,428 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 14:47:27,428 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 16 treesize of output 18 [2023-08-24 14:47:27,524 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2023-08-24 14:47:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:47:27,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:47:27,817 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse0 (+ c_~X_0~0.offset 4))) (and (forall ((v_ArrVal_791 (Array Int Int)) (v_ArrVal_790 (Array Int Int))) (< (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_790) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_791) c_~X_0~0.base) .cse0) (+ c_~t_4~0 1 c_~s_2~0))) (forall ((v_ArrVal_791 (Array Int Int)) (v_ArrVal_790 (Array Int Int))) (<= (+ c_~t_4~0 c_~s_2~0) (select (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_790) |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_791) c_~X_0~0.base) .cse0))))) is different from false [2023-08-24 14:47:27,833 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:47:27,833 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 218 treesize of output 142 [2023-08-24 14:47:27,838 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 29 treesize of output 25 [2023-08-24 14:47:27,843 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 32 treesize of output 24 [2023-08-24 14:47:27,882 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 14:47:27,882 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 14:47:28,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:47:28,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1403929320] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:47:28,043 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:47:28,043 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 9] total 24 [2023-08-24 14:47:28,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944204727] [2023-08-24 14:47:28,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:47:28,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-24 14:47:28,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:47:28,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-24 14:47:28,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=515, Unknown=6, NotChecked=46, Total=650 [2023-08-24 14:47:28,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 376 [2023-08-24 14:47:28,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 688 transitions, 10551 flow. Second operand has 26 states, 26 states have (on average 137.6153846153846) internal successors, (3578), 26 states have internal predecessors, (3578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:28,047 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:47:28,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 376 [2023-08-24 14:47:28,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:47:35,763 INFO L124 PetriNetUnfolderBase]: 20989/30491 cut-off events. [2023-08-24 14:47:35,763 INFO L125 PetriNetUnfolderBase]: For 365805/365923 co-relation queries the response was YES. [2023-08-24 14:47:36,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 211554 conditions, 30491 events. 20989/30491 cut-off events. For 365805/365923 co-relation queries the response was YES. Maximal size of possible extension queue 1335. Compared 192519 event pairs, 5891 based on Foata normal form. 53/29501 useless extension candidates. Maximal degree in co-relation 211451. Up to 23923 conditions per place. [2023-08-24 14:47:36,209 INFO L140 encePairwiseOnDemand]: 357/376 looper letters, 619 selfloop transitions, 274 changer transitions 1/899 dead transitions. [2023-08-24 14:47:36,209 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 899 transitions, 14721 flow [2023-08-24 14:47:36,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-24 14:47:36,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-24 14:47:36,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2348 transitions. [2023-08-24 14:47:36,212 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39029255319148937 [2023-08-24 14:47:36,212 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2348 transitions. [2023-08-24 14:47:36,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2348 transitions. [2023-08-24 14:47:36,213 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:47:36,213 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2348 transitions. [2023-08-24 14:47:36,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 146.75) internal successors, (2348), 16 states have internal predecessors, (2348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:36,220 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 376.0) internal successors, (6392), 17 states have internal predecessors, (6392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:36,220 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 376.0) internal successors, (6392), 17 states have internal predecessors, (6392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:36,220 INFO L175 Difference]: Start difference. First operand has 223 places, 688 transitions, 10551 flow. Second operand 16 states and 2348 transitions. [2023-08-24 14:47:36,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 899 transitions, 14721 flow [2023-08-24 14:47:42,256 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 899 transitions, 13982 flow, removed 362 selfloop flow, removed 6 redundant places. [2023-08-24 14:47:42,268 INFO L231 Difference]: Finished difference. Result has 236 places, 764 transitions, 11759 flow [2023-08-24 14:47:42,268 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=9850, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=688, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=209, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=440, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=11759, PETRI_PLACES=236, PETRI_TRANSITIONS=764} [2023-08-24 14:47:42,269 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 190 predicate places. [2023-08-24 14:47:42,269 INFO L495 AbstractCegarLoop]: Abstraction has has 236 places, 764 transitions, 11759 flow [2023-08-24 14:47:42,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 137.6153846153846) internal successors, (3578), 26 states have internal predecessors, (3578), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:42,270 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:47:42,270 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-08-24 14:47:42,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2023-08-24 14:47:42,471 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-08-24 14:47:42,472 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:47:42,472 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:47:42,472 INFO L85 PathProgramCache]: Analyzing trace with hash 1111983868, now seen corresponding path program 8 times [2023-08-24 14:47:42,472 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:47:42,472 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1372628092] [2023-08-24 14:47:42,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:47:42,472 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:47:42,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:47:43,081 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:47:43,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:47:43,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1372628092] [2023-08-24 14:47:43,082 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1372628092] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:47:43,082 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [435612660] [2023-08-24 14:47:43,082 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 14:47:43,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:47:43,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:47:43,085 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 14:47:43,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2023-08-24 14:47:43,253 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 14:47:43,253 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 14:47:43,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 73 conjunts are in the unsatisfiable core [2023-08-24 14:47:43,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:47:43,292 INFO L322 Elim1Store]: treesize reduction 33, result has 40.0 percent of original size [2023-08-24 14:47:43,292 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 27 [2023-08-24 14:47:43,420 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-24 14:47:43,421 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-08-24 14:47:43,552 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 18 treesize of output 20 [2023-08-24 14:47:43,649 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:47:43,649 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2023-08-24 14:47:43,764 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:47:43,764 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:47:44,038 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:47:44,038 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 97 treesize of output 62 [2023-08-24 14:47:44,044 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 53 treesize of output 49 [2023-08-24 14:47:44,049 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 49 treesize of output 45 [2023-08-24 14:47:44,575 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:47:44,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [435612660] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:47:44,575 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:47:44,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2023-08-24 14:47:44,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093204214] [2023-08-24 14:47:44,576 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:47:44,576 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-24 14:47:44,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:47:44,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-24 14:47:44,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=765, Unknown=2, NotChecked=0, Total=870 [2023-08-24 14:47:44,578 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 376 [2023-08-24 14:47:44,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 236 places, 764 transitions, 11759 flow. Second operand has 30 states, 30 states have (on average 119.4) internal successors, (3582), 30 states have internal predecessors, (3582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:44,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:47:44,581 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 376 [2023-08-24 14:47:44,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:47:53,579 INFO L124 PetriNetUnfolderBase]: 22408/32488 cut-off events. [2023-08-24 14:47:53,579 INFO L125 PetriNetUnfolderBase]: For 430261/430397 co-relation queries the response was YES. [2023-08-24 14:47:53,943 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247154 conditions, 32488 events. 22408/32488 cut-off events. For 430261/430397 co-relation queries the response was YES. Maximal size of possible extension queue 1448. Compared 206636 event pairs, 6449 based on Foata normal form. 67/31464 useless extension candidates. Maximal degree in co-relation 247049. Up to 26063 conditions per place. [2023-08-24 14:47:54,081 INFO L140 encePairwiseOnDemand]: 362/376 looper letters, 733 selfloop transitions, 260 changer transitions 2/1000 dead transitions. [2023-08-24 14:47:54,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 258 places, 1000 transitions, 16894 flow [2023-08-24 14:47:54,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-08-24 14:47:54,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2023-08-24 14:47:54,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 2884 transitions. [2023-08-24 14:47:54,085 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33348751156336726 [2023-08-24 14:47:54,085 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 2884 transitions. [2023-08-24 14:47:54,085 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 2884 transitions. [2023-08-24 14:47:54,086 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:47:54,086 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 2884 transitions. [2023-08-24 14:47:54,090 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 125.3913043478261) internal successors, (2884), 23 states have internal predecessors, (2884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:54,095 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 376.0) internal successors, (9024), 24 states have internal predecessors, (9024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:54,096 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 376.0) internal successors, (9024), 24 states have internal predecessors, (9024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:54,096 INFO L175 Difference]: Start difference. First operand has 236 places, 764 transitions, 11759 flow. Second operand 23 states and 2884 transitions. [2023-08-24 14:47:54,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 258 places, 1000 transitions, 16894 flow [2023-08-24 14:47:59,797 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 250 places, 1000 transitions, 16267 flow, removed 139 selfloop flow, removed 8 redundant places. [2023-08-24 14:47:59,811 INFO L231 Difference]: Finished difference. Result has 261 places, 862 transitions, 13822 flow [2023-08-24 14:47:59,811 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=11192, PETRI_DIFFERENCE_MINUEND_PLACES=228, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=764, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=177, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=525, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=13822, PETRI_PLACES=261, PETRI_TRANSITIONS=862} [2023-08-24 14:47:59,812 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 215 predicate places. [2023-08-24 14:47:59,812 INFO L495 AbstractCegarLoop]: Abstraction has has 261 places, 862 transitions, 13822 flow [2023-08-24 14:47:59,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 119.4) internal successors, (3582), 30 states have internal predecessors, (3582), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:47:59,813 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:47:59,813 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-08-24 14:47:59,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2023-08-24 14:48:00,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2023-08-24 14:48:00,018 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:48:00,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:48:00,019 INFO L85 PathProgramCache]: Analyzing trace with hash -263279104, now seen corresponding path program 9 times [2023-08-24 14:48:00,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:48:00,019 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706712728] [2023-08-24 14:48:00,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:48:00,019 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:48:00,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:48:00,619 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:48:00,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:48:00,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706712728] [2023-08-24 14:48:00,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706712728] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:48:00,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016179584] [2023-08-24 14:48:00,620 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 14:48:00,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:48:00,620 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:48:00,622 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 14:48:00,622 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2023-08-24 14:48:00,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-08-24 14:48:00,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 14:48:00,778 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 66 conjunts are in the unsatisfiable core [2023-08-24 14:48:00,781 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:48:01,064 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 14:48:01,065 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 18 treesize of output 20 [2023-08-24 14:48:01,123 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:48:01,124 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 15 [2023-08-24 14:48:01,229 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:48:01,229 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:48:01,658 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:48:01,658 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 95 treesize of output 60 [2023-08-24 14:48:01,663 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 51 treesize of output 47 [2023-08-24 14:48:01,676 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 47 treesize of output 43 [2023-08-24 14:48:01,994 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:48:01,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016179584] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:48:01,994 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:48:01,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 11] total 28 [2023-08-24 14:48:01,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904577322] [2023-08-24 14:48:01,994 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:48:01,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2023-08-24 14:48:01,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:48:01,995 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2023-08-24 14:48:01,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=762, Unknown=6, NotChecked=0, Total=870 [2023-08-24 14:48:01,996 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 376 [2023-08-24 14:48:01,998 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 862 transitions, 13822 flow. Second operand has 30 states, 30 states have (on average 127.26666666666667) internal successors, (3818), 30 states have internal predecessors, (3818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:48:01,998 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:48:01,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 376 [2023-08-24 14:48:01,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:48:12,006 INFO L124 PetriNetUnfolderBase]: 24424/35389 cut-off events. [2023-08-24 14:48:12,006 INFO L125 PetriNetUnfolderBase]: For 492740/492876 co-relation queries the response was YES. [2023-08-24 14:48:12,398 INFO L83 FinitePrefix]: Finished finitePrefix Result has 274459 conditions, 35389 events. 24424/35389 cut-off events. For 492740/492876 co-relation queries the response was YES. Maximal size of possible extension queue 1596. Compared 227620 event pairs, 7031 based on Foata normal form. 68/34254 useless extension candidates. Maximal degree in co-relation 274339. Up to 28444 conditions per place. [2023-08-24 14:48:12,546 INFO L140 encePairwiseOnDemand]: 361/376 looper letters, 818 selfloop transitions, 272 changer transitions 1/1096 dead transitions. [2023-08-24 14:48:12,547 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 281 places, 1096 transitions, 19057 flow [2023-08-24 14:48:12,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-08-24 14:48:12,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-08-24 14:48:12,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2837 transitions. [2023-08-24 14:48:12,549 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.35929584599797365 [2023-08-24 14:48:12,550 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2837 transitions. [2023-08-24 14:48:12,550 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2837 transitions. [2023-08-24 14:48:12,550 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:48:12,550 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2837 transitions. [2023-08-24 14:48:12,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 135.0952380952381) internal successors, (2837), 21 states have internal predecessors, (2837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:48:12,558 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 376.0) internal successors, (8272), 22 states have internal predecessors, (8272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:48:12,559 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 376.0) internal successors, (8272), 22 states have internal predecessors, (8272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:48:12,559 INFO L175 Difference]: Start difference. First operand has 261 places, 862 transitions, 13822 flow. Second operand 21 states and 2837 transitions. [2023-08-24 14:48:12,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 281 places, 1096 transitions, 19057 flow [2023-08-24 14:48:18,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 273 places, 1096 transitions, 18738 flow, removed 131 selfloop flow, removed 8 redundant places. [2023-08-24 14:48:18,858 INFO L231 Difference]: Finished difference. Result has 279 places, 941 transitions, 15809 flow [2023-08-24 14:48:18,858 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=13503, PETRI_DIFFERENCE_MINUEND_PLACES=253, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=862, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=213, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=620, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=15809, PETRI_PLACES=279, PETRI_TRANSITIONS=941} [2023-08-24 14:48:18,859 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 233 predicate places. [2023-08-24 14:48:18,859 INFO L495 AbstractCegarLoop]: Abstraction has has 279 places, 941 transitions, 15809 flow [2023-08-24 14:48:18,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 127.26666666666667) internal successors, (3818), 30 states have internal predecessors, (3818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:48:18,859 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:48:18,859 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-08-24 14:48:18,866 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2023-08-24 14:48:19,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:48:19,060 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:48:19,060 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:48:19,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2008219619, now seen corresponding path program 2 times [2023-08-24 14:48:19,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:48:19,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542577545] [2023-08-24 14:48:19,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:48:19,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:48:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:48:19,541 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:48:19,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:48:19,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542577545] [2023-08-24 14:48:19,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [542577545] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:48:19,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468113262] [2023-08-24 14:48:19,542 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-24 14:48:19,542 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:48:19,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:48:19,545 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 14:48:19,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2023-08-24 14:48:19,705 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-24 14:48:19,705 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 14:48:19,707 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-24 14:48:19,708 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:48:19,856 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:48:19,856 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2023-08-24 14:48:19,974 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 14:48:19,974 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:48:20,165 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:48:20,166 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 68 treesize of output 63 [2023-08-24 14:48:20,384 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:48:20,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468113262] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:48:20,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:48:20,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 19 [2023-08-24 14:48:20,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728994433] [2023-08-24 14:48:20,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:48:20,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-24 14:48:20,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:48:20,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-24 14:48:20,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2023-08-24 14:48:20,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 376 [2023-08-24 14:48:20,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 941 transitions, 15809 flow. Second operand has 20 states, 20 states have (on average 139.35) internal successors, (2787), 20 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:48:20,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:48:20,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 376 [2023-08-24 14:48:20,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:48:30,018 INFO L124 PetriNetUnfolderBase]: 25274/36601 cut-off events. [2023-08-24 14:48:30,019 INFO L125 PetriNetUnfolderBase]: For 556345/556481 co-relation queries the response was YES. [2023-08-24 14:48:30,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 292049 conditions, 36601 events. 25274/36601 cut-off events. For 556345/556481 co-relation queries the response was YES. Maximal size of possible extension queue 1662. Compared 236264 event pairs, 8760 based on Foata normal form. 57/35391 useless extension candidates. Maximal degree in co-relation 291923. Up to 33942 conditions per place. [2023-08-24 14:48:30,627 INFO L140 encePairwiseOnDemand]: 361/376 looper letters, 980 selfloop transitions, 98 changer transitions 16/1099 dead transitions. [2023-08-24 14:48:30,627 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 294 places, 1099 transitions, 19852 flow [2023-08-24 14:48:30,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-08-24 14:48:30,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2023-08-24 14:48:30,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 2362 transitions. [2023-08-24 14:48:30,630 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39261968085106386 [2023-08-24 14:48:30,630 INFO L72 ComplementDD]: Start complementDD. Operand 16 states and 2362 transitions. [2023-08-24 14:48:30,630 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 2362 transitions. [2023-08-24 14:48:30,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:48:30,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 16 states and 2362 transitions. [2023-08-24 14:48:30,632 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 17 states, 16 states have (on average 147.625) internal successors, (2362), 16 states have internal predecessors, (2362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:48:30,635 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 17 states, 17 states have (on average 376.0) internal successors, (6392), 17 states have internal predecessors, (6392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:48:30,635 INFO L81 ComplementDD]: Finished complementDD. Result has 17 states, 17 states have (on average 376.0) internal successors, (6392), 17 states have internal predecessors, (6392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:48:30,635 INFO L175 Difference]: Start difference. First operand has 279 places, 941 transitions, 15809 flow. Second operand 16 states and 2362 transitions. [2023-08-24 14:48:30,635 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 294 places, 1099 transitions, 19852 flow [2023-08-24 14:48:38,403 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 282 places, 1099 transitions, 19163 flow, removed 223 selfloop flow, removed 12 redundant places. [2023-08-24 14:48:38,418 INFO L231 Difference]: Finished difference. Result has 289 places, 983 transitions, 16242 flow [2023-08-24 14:48:38,418 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=15126, PETRI_DIFFERENCE_MINUEND_PLACES=267, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=941, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=861, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=16242, PETRI_PLACES=289, PETRI_TRANSITIONS=983} [2023-08-24 14:48:38,419 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 243 predicate places. [2023-08-24 14:48:38,419 INFO L495 AbstractCegarLoop]: Abstraction has has 289 places, 983 transitions, 16242 flow [2023-08-24 14:48:38,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 139.35) internal successors, (2787), 20 states have internal predecessors, (2787), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:48:38,419 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:48:38,419 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-08-24 14:48:38,426 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2023-08-24 14:48:38,620 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:48:38,620 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:48:38,620 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:48:38,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1671500681, now seen corresponding path program 3 times [2023-08-24 14:48:38,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:48:38,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2011919342] [2023-08-24 14:48:38,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:48:38,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:48:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:48:39,013 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:48:39,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:48:39,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2011919342] [2023-08-24 14:48:39,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2011919342] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:48:39,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499374560] [2023-08-24 14:48:39,014 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-24 14:48:39,014 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:48:39,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:48:39,015 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 14:48:39,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2023-08-24 14:48:39,172 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2023-08-24 14:48:39,172 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 14:48:39,174 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 83 conjunts are in the unsatisfiable core [2023-08-24 14:48:39,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:48:39,187 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 14:48:39,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 14:48:39,197 INFO L322 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-08-24 14:48:39,197 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 20 [2023-08-24 14:48:39,248 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-08-24 14:48:39,274 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 14:48:39,312 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-24 14:48:39,312 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-08-24 14:48:39,353 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 14:48:39,391 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 14:48:39,425 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-08-24 14:48:39,523 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2023-08-24 14:48:39,562 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:48:39,563 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:48:39,811 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) (.cse1 (+ c_~X_0~0.offset 4))) (and (forall ((v_ArrVal_1033 (Array Int Int)) (v_ArrVal_1032 (Array Int Int))) (let ((.cse0 (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t2~0.base| v_ArrVal_1032) |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_1033) c_~X_0~0.base))) (< (select .cse0 .cse1) (+ (select .cse0 .cse2) 1 c_~s_2~0)))) (forall ((v_ArrVal_1033 (Array Int Int)) (v_ArrVal_1032 (Array Int Int))) (let ((.cse3 (select (store (store |c_#memory_int| |c_thread1Thread1of1ForFork0_~#t2~0.base| v_ArrVal_1032) |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_1033) c_~X_0~0.base))) (<= (+ (select .cse3 .cse2) c_~s_2~0) (select .cse3 .cse1)))))) is different from false [2023-08-24 14:48:39,828 WARN L839 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~X_0~0.offset 4 (* 4 c_~i_3~0))) (.cse1 (+ c_~X_0~0.offset 4))) (and (forall ((v_ArrVal_1033 (Array Int Int)) (v_ArrVal_1032 (Array Int Int)) (v_ArrVal_1031 (Array Int Int))) (let ((.cse0 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1031) |c_thread1Thread1of1ForFork0_~#t2~0.base| v_ArrVal_1032) |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_1033) c_~X_0~0.base))) (< (select .cse0 .cse1) (+ (select .cse0 .cse2) 1 c_~s_2~0)))) (forall ((v_ArrVal_1033 (Array Int Int)) (v_ArrVal_1032 (Array Int Int)) (v_ArrVal_1031 (Array Int Int))) (let ((.cse3 (select (store (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t4~0#1.base| v_ArrVal_1031) |c_thread1Thread1of1ForFork0_~#t2~0.base| v_ArrVal_1032) |c_thread1Thread1of1ForFork0_~#t3~0.base| v_ArrVal_1033) c_~X_0~0.base))) (<= (+ (select .cse3 .cse2) c_~s_2~0) (select .cse3 .cse1)))))) is different from false [2023-08-24 14:48:39,836 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:48:39,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499374560] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:48:39,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:48:39,836 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 12, 9] total 26 [2023-08-24 14:48:39,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99650045] [2023-08-24 14:48:39,836 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:48:39,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-08-24 14:48:39,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:48:39,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-08-24 14:48:39,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=514, Unknown=6, NotChecked=94, Total=702 [2023-08-24 14:48:39,838 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 376 [2023-08-24 14:48:39,840 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 289 places, 983 transitions, 16242 flow. Second operand has 27 states, 27 states have (on average 119.55555555555556) internal successors, (3228), 27 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) [2023-08-24 14:48:39,840 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:48:39,840 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 376 [2023-08-24 14:48:39,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:49:00,808 INFO L124 PetriNetUnfolderBase]: 51992/75052 cut-off events. [2023-08-24 14:49:00,808 INFO L125 PetriNetUnfolderBase]: For 1227854/1228120 co-relation queries the response was YES. [2023-08-24 14:49:01,951 INFO L83 FinitePrefix]: Finished finitePrefix Result has 608164 conditions, 75052 events. 51992/75052 cut-off events. For 1227854/1228120 co-relation queries the response was YES. Maximal size of possible extension queue 3350. Compared 530251 event pairs, 17021 based on Foata normal form. 90/72578 useless extension candidates. Maximal degree in co-relation 607478. Up to 45260 conditions per place. [2023-08-24 14:49:02,456 INFO L140 encePairwiseOnDemand]: 363/376 looper letters, 1910 selfloop transitions, 270 changer transitions 1/2186 dead transitions. [2023-08-24 14:49:02,456 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 317 places, 2186 transitions, 39581 flow [2023-08-24 14:49:02,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2023-08-24 14:49:02,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2023-08-24 14:49:02,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 3702 transitions. [2023-08-24 14:49:02,461 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3395084372707263 [2023-08-24 14:49:02,461 INFO L72 ComplementDD]: Start complementDD. Operand 29 states and 3702 transitions. [2023-08-24 14:49:02,461 INFO L73 IsDeterministic]: Start isDeterministic. Operand 29 states and 3702 transitions. [2023-08-24 14:49:02,462 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:49:02,462 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 29 states and 3702 transitions. [2023-08-24 14:49:02,466 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 30 states, 29 states have (on average 127.65517241379311) internal successors, (3702), 29 states have internal predecessors, (3702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:49:02,472 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 30 states, 30 states have (on average 376.0) internal successors, (11280), 30 states have internal predecessors, (11280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:49:02,473 INFO L81 ComplementDD]: Finished complementDD. Result has 30 states, 30 states have (on average 376.0) internal successors, (11280), 30 states have internal predecessors, (11280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:49:02,473 INFO L175 Difference]: Start difference. First operand has 289 places, 983 transitions, 16242 flow. Second operand 29 states and 3702 transitions. [2023-08-24 14:49:02,473 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 317 places, 2186 transitions, 39581 flow [2023-08-24 14:49:27,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 2186 transitions, 39008 flow, removed 270 selfloop flow, removed 4 redundant places. [2023-08-24 14:49:27,457 INFO L231 Difference]: Finished difference. Result has 326 places, 1168 transitions, 20619 flow [2023-08-24 14:49:27,458 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=15948, PETRI_DIFFERENCE_MINUEND_PLACES=285, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=983, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=103, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=838, PETRI_DIFFERENCE_SUBTRAHEND_STATES=29, PETRI_FLOW=20619, PETRI_PLACES=326, PETRI_TRANSITIONS=1168} [2023-08-24 14:49:27,458 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 280 predicate places. [2023-08-24 14:49:27,458 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 1168 transitions, 20619 flow [2023-08-24 14:49:27,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 27 states have (on average 119.55555555555556) internal successors, (3228), 27 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) [2023-08-24 14:49:27,459 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:49:27,459 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-08-24 14:49:27,465 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2023-08-24 14:49:27,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:49:27,665 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:49:27,665 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:49:27,665 INFO L85 PathProgramCache]: Analyzing trace with hash -1008043655, now seen corresponding path program 4 times [2023-08-24 14:49:27,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:49:27,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051699938] [2023-08-24 14:49:27,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:49:27,666 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:49:27,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:49:28,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-24 14:49:28,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:49:28,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051699938] [2023-08-24 14:49:28,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2051699938] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:49:28,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [690536567] [2023-08-24 14:49:28,486 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 14:49:28,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:49:28,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:49:28,487 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 14:49:28,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2023-08-24 14:49:28,633 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 14:49:28,633 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 14:49:28,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 60 conjunts are in the unsatisfiable core [2023-08-24 14:49:28,637 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:49:28,811 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-08-24 14:49:28,811 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 [2023-08-24 14:49:28,844 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 22 treesize of output 10 [2023-08-24 14:49:28,895 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 14:49:28,895 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:49:29,049 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:49:29,049 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 58 treesize of output 39 [2023-08-24 14:49:29,054 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 11 [2023-08-24 14:49:29,063 INFO L173 IndexEqualityManager]: detected equality via solver [2023-08-24 14:49:29,068 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-24 14:49:29,069 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 13 [2023-08-24 14:49:29,201 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:49:29,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [690536567] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:49:29,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:49:29,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 8] total 24 [2023-08-24 14:49:29,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325384800] [2023-08-24 14:49:29,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:49:29,202 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-08-24 14:49:29,202 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:49:29,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-08-24 14:49:29,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=547, Unknown=9, NotChecked=0, Total=650 [2023-08-24 14:49:29,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 376 [2023-08-24 14:49:29,206 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 1168 transitions, 20619 flow. Second operand has 26 states, 26 states have (on average 127.42307692307692) internal successors, (3313), 26 states have internal predecessors, (3313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:49:29,206 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:49:29,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 376 [2023-08-24 14:49:29,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:49:52,944 INFO L124 PetriNetUnfolderBase]: 52826/76075 cut-off events. [2023-08-24 14:49:52,944 INFO L125 PetriNetUnfolderBase]: For 1322494/1322720 co-relation queries the response was YES. [2023-08-24 14:49:54,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 628502 conditions, 76075 events. 52826/76075 cut-off events. For 1322494/1322720 co-relation queries the response was YES. Maximal size of possible extension queue 3408. Compared 536377 event pairs, 18168 based on Foata normal form. 69/73445 useless extension candidates. Maximal degree in co-relation 627753. Up to 70318 conditions per place. [2023-08-24 14:49:54,658 INFO L140 encePairwiseOnDemand]: 366/376 looper letters, 1099 selfloop transitions, 145 changer transitions 1/1250 dead transitions. [2023-08-24 14:49:54,658 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 335 places, 1250 transitions, 24147 flow [2023-08-24 14:49:54,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2023-08-24 14:49:54,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2023-08-24 14:49:54,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1354 transitions. [2023-08-24 14:49:54,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3601063829787234 [2023-08-24 14:49:54,660 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1354 transitions. [2023-08-24 14:49:54,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1354 transitions. [2023-08-24 14:49:54,660 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:49:54,660 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1354 transitions. [2023-08-24 14:49:54,662 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 135.4) internal successors, (1354), 10 states have internal predecessors, (1354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:49:54,665 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 376.0) internal successors, (4136), 11 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:49:54,665 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 376.0) internal successors, (4136), 11 states have internal predecessors, (4136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:49:54,665 INFO L175 Difference]: Start difference. First operand has 326 places, 1168 transitions, 20619 flow. Second operand 10 states and 1354 transitions. [2023-08-24 14:49:54,665 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 335 places, 1250 transitions, 24147 flow [2023-08-24 14:50:20,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 331 places, 1250 transitions, 23660 flow, removed 232 selfloop flow, removed 4 redundant places. [2023-08-24 14:50:20,999 INFO L231 Difference]: Finished difference. Result has 333 places, 1189 transitions, 20944 flow [2023-08-24 14:50:21,000 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=20132, PETRI_DIFFERENCE_MINUEND_PLACES=322, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=126, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1025, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=20944, PETRI_PLACES=333, PETRI_TRANSITIONS=1189} [2023-08-24 14:50:21,000 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 287 predicate places. [2023-08-24 14:50:21,000 INFO L495 AbstractCegarLoop]: Abstraction has has 333 places, 1189 transitions, 20944 flow [2023-08-24 14:50:21,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 127.42307692307692) internal successors, (3313), 26 states have internal predecessors, (3313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:50:21,001 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:50:21,001 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-08-24 14:50:21,009 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2023-08-24 14:50:21,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:50:21,207 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:50:21,207 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:50:21,207 INFO L85 PathProgramCache]: Analyzing trace with hash -2010875363, now seen corresponding path program 5 times [2023-08-24 14:50:21,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:50:21,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782312084] [2023-08-24 14:50:21,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:50:21,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:50:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:50:21,644 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:50:21,645 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:50:21,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782312084] [2023-08-24 14:50:21,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782312084] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:50:21,645 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692009845] [2023-08-24 14:50:21,645 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-08-24 14:50:21,645 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:50:21,645 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:50:21,649 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 14:50:21,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2023-08-24 14:50:21,801 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-08-24 14:50:21,801 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 14:50:21,803 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-24 14:50:21,804 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:50:21,904 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 15 treesize of output 7 [2023-08-24 14:50:21,952 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:50:21,952 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:50:22,046 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:50:22,046 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 14 [2023-08-24 14:50:22,098 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:50:22,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692009845] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:50:22,098 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:50:22,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 14 [2023-08-24 14:50:22,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953065385] [2023-08-24 14:50:22,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:50:22,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-08-24 14:50:22,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:50:22,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-08-24 14:50:22,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2023-08-24 14:50:22,101 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 376 [2023-08-24 14:50:22,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 1189 transitions, 20944 flow. Second operand has 15 states, 15 states have (on average 149.66666666666666) internal successors, (2245), 15 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:50:22,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:50:22,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 376 [2023-08-24 14:50:22,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:50:44,856 INFO L124 PetriNetUnfolderBase]: 53740/77466 cut-off events. [2023-08-24 14:50:44,856 INFO L125 PetriNetUnfolderBase]: For 1369433/1369715 co-relation queries the response was YES. [2023-08-24 14:50:46,226 INFO L83 FinitePrefix]: Finished finitePrefix Result has 641635 conditions, 77466 events. 53740/77466 cut-off events. For 1369433/1369715 co-relation queries the response was YES. Maximal size of possible extension queue 3481. Compared 548407 event pairs, 17821 based on Foata normal form. 69/74855 useless extension candidates. Maximal degree in co-relation 640988. Up to 70808 conditions per place. [2023-08-24 14:50:46,570 INFO L140 encePairwiseOnDemand]: 366/376 looper letters, 1097 selfloop transitions, 215 changer transitions 1/1318 dead transitions. [2023-08-24 14:50:46,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 346 places, 1318 transitions, 25298 flow [2023-08-24 14:50:46,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-08-24 14:50:46,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2023-08-24 14:50:46,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 2192 transitions. [2023-08-24 14:50:46,572 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41641337386018235 [2023-08-24 14:50:46,572 INFO L72 ComplementDD]: Start complementDD. Operand 14 states and 2192 transitions. [2023-08-24 14:50:46,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 2192 transitions. [2023-08-24 14:50:46,572 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:50:46,572 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 14 states and 2192 transitions. [2023-08-24 14:50:46,574 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 15 states, 14 states have (on average 156.57142857142858) internal successors, (2192), 14 states have internal predecessors, (2192), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:50:46,577 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 15 states, 15 states have (on average 376.0) internal successors, (5640), 15 states have internal predecessors, (5640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:50:46,577 INFO L81 ComplementDD]: Finished complementDD. Result has 15 states, 15 states have (on average 376.0) internal successors, (5640), 15 states have internal predecessors, (5640), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:50:46,577 INFO L175 Difference]: Start difference. First operand has 333 places, 1189 transitions, 20944 flow. Second operand 14 states and 2192 transitions. [2023-08-24 14:50:46,577 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 346 places, 1318 transitions, 25298 flow [2023-08-24 14:51:15,906 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 339 places, 1318 transitions, 25150 flow, removed 37 selfloop flow, removed 7 redundant places. [2023-08-24 14:51:15,924 INFO L231 Difference]: Finished difference. Result has 342 places, 1213 transitions, 21885 flow [2023-08-24 14:51:15,925 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=20816, PETRI_DIFFERENCE_MINUEND_PLACES=326, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=191, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=987, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=21885, PETRI_PLACES=342, PETRI_TRANSITIONS=1213} [2023-08-24 14:51:15,925 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 296 predicate places. [2023-08-24 14:51:15,925 INFO L495 AbstractCegarLoop]: Abstraction has has 342 places, 1213 transitions, 21885 flow [2023-08-24 14:51:15,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 149.66666666666666) internal successors, (2245), 15 states have internal predecessors, (2245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:51:15,926 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:51:15,926 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-08-24 14:51:15,930 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2023-08-24 14:51:16,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:51:16,126 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:51:16,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:51:16,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1508868712, now seen corresponding path program 10 times [2023-08-24 14:51:16,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:51:16,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903566414] [2023-08-24 14:51:16,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:51:16,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:51:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:51:16,582 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:51:16,582 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:51:16,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903566414] [2023-08-24 14:51:16,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903566414] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:51:16,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600954451] [2023-08-24 14:51:16,583 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-08-24 14:51:16,583 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:51:16,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:51:16,584 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 14:51:16,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2023-08-24 14:51:16,732 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-08-24 14:51:16,732 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 14:51:16,734 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 49 conjunts are in the unsatisfiable core [2023-08-24 14:51:16,735 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:51:16,834 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 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 19 treesize of output 7 [2023-08-24 14:51:16,869 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:51:16,869 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:51:16,955 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:51:16,955 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 16 [2023-08-24 14:51:16,967 INFO L322 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-08-24 14:51:16,968 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 13 [2023-08-24 14:51:17,020 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:51:17,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600954451] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:51:17,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:51:17,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 15 [2023-08-24 14:51:17,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333352375] [2023-08-24 14:51:17,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:51:17,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-08-24 14:51:17,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:51:17,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-08-24 14:51:17,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2023-08-24 14:51:17,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 376 [2023-08-24 14:51:17,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 1213 transitions, 21885 flow. Second operand has 16 states, 16 states have (on average 149.4375) internal successors, (2391), 16 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:51:17,024 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:51:17,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 376 [2023-08-24 14:51:17,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-24 14:51:42,391 INFO L124 PetriNetUnfolderBase]: 58989/84892 cut-off events. [2023-08-24 14:51:42,392 INFO L125 PetriNetUnfolderBase]: For 1630766/1631000 co-relation queries the response was YES. [2023-08-24 14:51:43,919 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715826 conditions, 84892 events. 58989/84892 cut-off events. For 1630766/1631000 co-relation queries the response was YES. Maximal size of possible extension queue 3742. Compared 605740 event pairs, 19387 based on Foata normal form. 73/81942 useless extension candidates. Maximal degree in co-relation 715129. Up to 75031 conditions per place. [2023-08-24 14:51:44,532 INFO L140 encePairwiseOnDemand]: 366/376 looper letters, 1246 selfloop transitions, 175 changer transitions 2/1428 dead transitions. [2023-08-24 14:51:44,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 354 places, 1428 transitions, 28043 flow [2023-08-24 14:51:44,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-24 14:51:44,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-24 14:51:44,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2080 transitions. [2023-08-24 14:51:44,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.425531914893617 [2023-08-24 14:51:44,534 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2080 transitions. [2023-08-24 14:51:44,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2080 transitions. [2023-08-24 14:51:44,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-24 14:51:44,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2080 transitions. [2023-08-24 14:51:44,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 160.0) internal successors, (2080), 13 states have internal predecessors, (2080), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:51:44,539 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 376.0) internal successors, (5264), 14 states have internal predecessors, (5264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:51:44,540 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 376.0) internal successors, (5264), 14 states have internal predecessors, (5264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:51:44,540 INFO L175 Difference]: Start difference. First operand has 342 places, 1213 transitions, 21885 flow. Second operand 13 states and 2080 transitions. [2023-08-24 14:51:44,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 354 places, 1428 transitions, 28043 flow [2023-08-24 14:52:21,137 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 344 places, 1428 transitions, 27490 flow, removed 80 selfloop flow, removed 10 redundant places. [2023-08-24 14:52:21,156 INFO L231 Difference]: Finished difference. Result has 350 places, 1285 transitions, 23560 flow [2023-08-24 14:52:21,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=376, PETRI_DIFFERENCE_MINUEND_FLOW=21332, PETRI_DIFFERENCE_MINUEND_PLACES=332, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1074, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=23560, PETRI_PLACES=350, PETRI_TRANSITIONS=1285} [2023-08-24 14:52:21,157 INFO L281 CegarLoopForPetriNet]: 46 programPoint places, 304 predicate places. [2023-08-24 14:52:21,157 INFO L495 AbstractCegarLoop]: Abstraction has has 350 places, 1285 transitions, 23560 flow [2023-08-24 14:52:21,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 149.4375) internal successors, (2391), 16 states have internal predecessors, (2391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:52:21,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-24 14:52:21,158 INFO L208 CegarLoopForPetriNet]: trace histogram [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, 1, 1, 1, 1, 1, 1] [2023-08-24 14:52:21,164 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2023-08-24 14:52:21,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:52:21,359 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-24 14:52:21,359 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-24 14:52:21,359 INFO L85 PathProgramCache]: Analyzing trace with hash 607870389, now seen corresponding path program 6 times [2023-08-24 14:52:21,359 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-24 14:52:21,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214563107] [2023-08-24 14:52:21,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-24 14:52:21,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-24 14:52:21,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-24 14:52:21,794 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:52:21,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-24 14:52:21,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214563107] [2023-08-24 14:52:21,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214563107] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-24 14:52:21,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1350741017] [2023-08-24 14:52:21,795 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-08-24 14:52:21,795 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-24 14:52:21,795 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-24 14:52:21,797 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-24 14:52:21,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2023-08-24 14:52:22,003 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2023-08-24 14:52:22,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-24 14:52:22,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 59 conjunts are in the unsatisfiable core [2023-08-24 14:52:22,008 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-24 14:52:22,234 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:52:22,234 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 15 [2023-08-24 14:52:22,292 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-24 14:52:22,292 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-24 14:52:22,407 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-24 14:52:22,408 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 27 [2023-08-24 14:52:22,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-24 14:52:22,545 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1350741017] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-24 14:52:22,545 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-24 14:52:22,545 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 9, 7] total 19 [2023-08-24 14:52:22,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789586852] [2023-08-24 14:52:22,546 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-24 14:52:22,546 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-08-24 14:52:22,546 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-24 14:52:22,547 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-08-24 14:52:22,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=301, Unknown=0, NotChecked=0, Total=380 [2023-08-24 14:52:22,548 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 136 out of 376 [2023-08-24 14:52:22,550 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 350 places, 1285 transitions, 23560 flow. Second operand has 20 states, 20 states have (on average 139.55) internal successors, (2791), 20 states have internal predecessors, (2791), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-24 14:52:22,550 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-24 14:52:22,550 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 136 of 376 [2023-08-24 14:52:22,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-24 14:52:40,366 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 14:52:40,371 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-24 14:52:41,378 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (6 of 7 remaining) [2023-08-24 14:52:41,381 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2023-08-24 14:52:41,405 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 [2023-08-24 14:52:41,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2023-08-24 14:52:41,581 WARN L619 AbstractCegarLoop]: Verification canceled: while executing Executor. [2023-08-24 14:52:41,583 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 7 remaining) [2023-08-24 14:52:41,583 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Err5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 7 remaining) [2023-08-24 14:52:41,583 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 7 remaining) [2023-08-24 14:52:41,583 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 7 remaining) [2023-08-24 14:52:41,583 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Thread1of1ForFork0Err0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 7 remaining) [2023-08-24 14:52:41,583 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location thread1Thread1of1ForFork0Err1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 7 remaining) [2023-08-24 14:52:41,583 INFO L445 BasicCegarLoop]: Path program histogram: [10, 6, 2, 2, 2, 1, 1] [2023-08-24 14:52:41,586 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-08-24 14:52:41,586 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-24 14:52:41,588 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.08 02:52:41 BasicIcfg [2023-08-24 14:52:41,588 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-24 14:52:41,588 INFO L158 Benchmark]: Toolchain (without parser) took 803007.75ms. Allocated memory was 350.2MB in the beginning and 15.4GB in the end (delta: 15.0GB). Free memory was 326.9MB in the beginning and 8.3GB in the end (delta: -8.0GB). Peak memory consumption was 7.6GB. Max. memory is 16.0GB. [2023-08-24 14:52:41,588 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 350.2MB. Free memory was 327.9MB in the beginning and 327.8MB in the end (delta: 86.2kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-24 14:52:41,589 INFO L158 Benchmark]: CACSL2BoogieTranslator took 286.12ms. Allocated memory is still 350.2MB. Free memory was 326.3MB in the beginning and 314.5MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-08-24 14:52:41,589 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.92ms. Allocated memory is still 350.2MB. Free memory was 314.5MB in the beginning and 311.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 14:52:41,589 INFO L158 Benchmark]: Boogie Preprocessor took 55.78ms. Allocated memory is still 350.2MB. Free memory was 311.8MB in the beginning and 309.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-24 14:52:41,589 INFO L158 Benchmark]: RCFGBuilder took 829.49ms. Allocated memory is still 350.2MB. Free memory was 309.7MB in the beginning and 266.8MB in the end (delta: 42.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.0GB. [2023-08-24 14:52:41,589 INFO L158 Benchmark]: TraceAbstraction took 801776.14ms. Allocated memory was 350.2MB in the beginning and 15.4GB in the end (delta: 15.0GB). Free memory was 266.2MB in the beginning and 8.3GB in the end (delta: -8.1GB). Peak memory consumption was 7.5GB. Max. memory is 16.0GB. [2023-08-24 14:52:41,590 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 350.2MB. Free memory was 327.9MB in the beginning and 327.8MB in the end (delta: 86.2kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 286.12ms. Allocated memory is still 350.2MB. Free memory was 326.3MB in the beginning and 314.5MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 53.92ms. Allocated memory is still 350.2MB. Free memory was 314.5MB in the beginning and 311.8MB in the end (delta: 2.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 55.78ms. Allocated memory is still 350.2MB. Free memory was 311.8MB in the beginning and 309.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 829.49ms. Allocated memory is still 350.2MB. Free memory was 309.7MB in the beginning and 266.8MB in the end (delta: 42.9MB). Peak memory consumption was 41.9MB. Max. memory is 16.0GB. * TraceAbstraction took 801776.14ms. Allocated memory was 350.2MB in the beginning and 15.4GB in the end (delta: 15.0GB). Free memory was 266.2MB in the beginning and 8.3GB in the end (delta: -8.1GB). Peak memory consumption was 7.5GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.8s, 182 PlacesBefore, 46 PlacesAfterwards, 183 TransitionsBefore, 39 TransitionsAfterwards, 2880 CoEnabledTransitionPairs, 7 FixpointIterations, 91 TrivialSequentialCompositions, 37 ConcurrentSequentialCompositions, 21 TrivialYvCompositions, 11 ConcurrentYvCompositions, 8 ChoiceCompositions, 168 TotalNumberOfCompositions, 7194 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4759, independent: 4559, independent conditional: 0, independent unconditional: 4559, dependent: 200, dependent conditional: 0, dependent unconditional: 200, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1628, independent: 1594, independent conditional: 0, independent unconditional: 1594, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4759, independent: 2965, independent conditional: 0, independent unconditional: 2965, dependent: 166, dependent conditional: 0, dependent unconditional: 166, unknown: 1628, unknown conditional: 0, unknown unconditional: 1628] , Statistics on independence cache: Total cache size (in pairs): 179, Positive cache size: 162, Positive conditional cache size: 0, Positive unconditional cache size: 162, Negative cache size: 17, Negative conditional cache size: 0, Negative unconditional cache size: 17, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 144]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while executing Executor. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 139]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 138]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 91]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - TimeoutResultAtElement [Line: 92]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while executing Executor. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 9 procedures, 247 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 801.6s, OverallIterations: 24, TraceHistogramMax: 2, PathProgramHistogramMax: 10, EmptinessCheckTime: 0.0s, AutomataDifference: 748.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.0s, HoareTripleCheckerStatistics: 253 mSolverCounterUnknown, 5122 SdHoareTripleChecker+Valid, 416.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 5122 mSDsluCounter, 486 SdHoareTripleChecker+Invalid, 414.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1995 IncrementalHoareTripleChecker+Unchecked, 389 mSDsCounter, 209 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 19062 IncrementalHoareTripleChecker+Invalid, 21519 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 209 mSolverCounterUnsat, 97 mSDtfsCounter, 19062 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1856 GetRequests, 1162 SyntacticMatches, 55 SemanticMatches, 639 ConstructedPredicates, 8 IntricatePredicates, 3 DeprecatedPredicates, 4778 ImplicationChecksByTransitivity, 35.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=23560occurred in iteration=23, InterpolantAutomatonStates: 315, 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: 0.5s SsaConstructionTime, 1.8s SatisfiabilityAnalysisTime, 38.5s InterpolantComputationTime, 1551 NumberOfCodeBlocks, 1551 NumberOfCodeBlocksAsserted, 63 NumberOfCheckSat, 2199 ConstructedInterpolants, 85 QuantifiedInterpolants, 23690 SizeOfPredicates, 436 NumberOfNonLiveVariables, 6794 ConjunctsInSsa, 1038 ConjunctsInUnsatCore, 64 InterpolantComputations, 5 PerfectInterpolantSequences, 134/278 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown